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Huda, Thoriqul, and Istiyo Winarno. "Diode Clamped Multilevel Inverter Berbasis Fuzzy Logic Sebagai Peredam Harmonik Pada Sistem Kelistrikan Kapal Akibat Propulsi Elektrik." JEECOM Journal of Electrical Engineering and Computer 3, no. 1 (April 29, 2021): 14–21. http://dx.doi.org/10.33650/jeecom.v3i1.1920.
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Transportasi merupakan salah satu hal yang penting dalam kehidupan saat ini. Kapal merupakan salah satu transportasi yang digunakan. Umumnya kapal masih menggunakan propulsi bertenaga diesel yang mana saat kecepatan meningkat akan membutuhkan konsumsi bahan bakar yang lebih banyak. Dengan menggunakan propulsi elektrik dapat mengurangi konsumsi bahan bakar, pengaturan kecepatan yang mudah melalui konverter frekuensi. Timbulnya harmonik distorsi pada sistem kelistrikan kapal mengakibatkan berkurangnya kualitas daya listrik pada kapal dan gangguan yang tidak diinginkan. Dalam penelitian ini untuk meredam besar harmonik menggunakan diode clamped multilevel inverter (DCMLI) tiga tingkat dengan fuzzy logic sebagi kontrol keseimbangan tegangan pada kapasitor DCMLI. Menunjukan kondisi THDi yang lebih baik setelah menggunakan kontrol fuzzy logic untuk keseimbangan tegangan kapasitor DCMLI. Analisa besar total harmonic distortion (THD) dilakukan dengan penggunaan propulsi elektrik Main propulsion dan Bow Thruster, dengan rata-rata besar THD pada Main propulsion 0.44% THDv dan 208.53% THDi sebelum dengan kontrol fuzzy logic, dan sesudah dengan kontrol fuzzy logic 7.86% THDv dan 92.55% THDi. Pada Bow Thruster rata-rata THD sebesar 0.90% THDv dan 208.68% THDi saat sebelum dengan kontrol fuzzy logic, dan sesudah dengan kontrol fuzzy logic 6.62% THDv dan 62.51% THDi.
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Ariana, I. Gede, I. G. Dyana Arjana, and I. Wayan Rinas. "ANALISIS PENGARUH HARMONISA TERHADAP RUGI -RUGI DAYA (LOSSES) PADA TRANSFORMATOR DI PENYULANG SEDAP MALAM." Majalah Ilmiah Teknologi Elektro 16, no. 1 (August 23, 2016): 97. http://dx.doi.org/10.24843/mite.1601.14.
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The aim of this study is to analyze the influence of harmonic to power losses in transformator at Sedap Malam feeder by using the help of ETAP power station, so we can obtain how much the influence of harmonic in distribution system. By measuring THDv and THDI in DT0042, DT0048 and DT0319 transformator we got THDv value of 1.1% in DT0042, 1.56% in DT 48 and 1.23% in DT0319 from maximum margin of 5.0% in THDV according to IEEE 519–1992 standard. As for THDI we got the value of 9.36% in DT0042, 12.4% in DT0048 and 14.2% in DT0319 from maximum margin of 8.0% in THDI according to IEEE 519 – 1992 standard. On other side, the result by running ETAP power station we got THDI value of 1.59% in D00T42, 1.95% in DT0048 and 1.71% in DT0319. As for THDv we got running result of 12.22% in DT0042, 12.96% in DT0048 and 13.54% in DT0319. Based on the result of performed analisis of the influence of harmonic to power losses in transformator at Sedap Malam feeder, we obtained that the amount of power losses was 43,2 kW before having harmonic and 45,7 kW after having harmonic. The raise of 2,5 kW was caused by occurance of harmonic in DT0042, DT0048 and DT0319 transformator from total of 44 existed transformatorsPenelitian ini menganalisis pengaruh harmonisa terhadap rugi-rugi daya (losses) pada Transformator di peyulang sedap malam menggunakan bantuan ETAP power station, sehingga dapat diketahui hasil seberapa besar pengaruh harmonisa pada sistem distribusi. Hasil pengukuran THDv dan THDi pada Transformator DT0042, DT0048 dan DT0319 dari diperoleh hasil THDv sebesar 1,1% pada DT0042, 1,56% pada DT0048 dan 1,23% pada DT0319 dari batas maksimum THDV menurut standar IEEE 519–1992 adalah 5.0%. Untuk hasil pengukuran THDI didapatkan hasil pengukuran sebesar 9,36% pada DT0042. 12,4% pada DT0048 dan 14,2% pada DT0319 dari batas maksimum THDI menurut standar IEEE 519 – 1992 adalah 8.0 %. Sedangkan untuk hasil running ETAP power station hasil THDI yang didapatkan sebesar 1,59% pada DT0042. 1,95% pada DT0048 dan 1,71% pada DT0319 untuk hasil THDv di dapatkan hasil running sebesar 12,22% pada DT0042. 12,96% pada DT0048 dan 13,54% pada DT0319. Berdasarkan hasil analisis yang telah dilakukan pengaruh harmonisa terhadap rugi-rugi daya (losses) pada Transformator di penyulang Sedap Malam didapatkan hasil rugi-rugi daya sebesar 43,2 kW sebelum adanya harmonisa dan setelah adanya harmonisa menjadi 45,7 kW peningkatan sebesar 2,5 kW ini di dapatkan dengan masuknya harmonisa di Trasformator DT0042,DT0048 dan DT0319 dari total Transformator yang ada sebanyak 44 buah. Kata kunci : Distribusi, Harmonisa, THDv,THDi, Rugi DayaDOI: 10.24843/MITE.1601.14
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Wiguna, I. Kadek Arya, I. Wayan Rinas, and I. Wayan Arta Wijaya. "Analisis Penggunaan Filter Damped untuk Mereduksi Total Harmonic Distortion (THD) di Rumah Sakit Umum Daerah (RSUD) Klungkung." Majalah Ilmiah Teknologi Elektro 17, no. 2 (May 23, 2018): 159. http://dx.doi.org/10.24843/mite.2018.v17i02.p01.
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Pengoperasian beban non linier merupakan penyebab timbulnya harmonisa. Tingkat distorsi atau disebut Total Harmonic Distortion (THD) yang tinggi berpotensi menurunkan kualitas energi listrik yang disalurkan. Dalam penelitian ini dilakukan pengukuran THD pada tiap Sub Distribution Panel (SDP) di RSUD Klungkung. Hasil pengukuran awal menunjukkan nilai THDI tertinggi terdapat pada SDP P.AC sebesar 45,73% dan terendah pada SDP UGD sebesar 3,93%. Sedangkan nilai THDV hasil pengukuran awal rata-rata sebesar 5,3%. Standar yang dijadikan acuan adalah IEEE Standard 519-2014, dimana batas standar THDI adalah 8,0%, dan batas standar THDV adalah 8,0%. Nilai THD yang melewati standar dianalisis dan disimulasikan pada perangkat lunak ETAP dengan penambahan Damped Filter untuk mereduksi nilai THD yang melewati standar. Berdasarkan hasil simulasi setelah penambahan Damped Filter, nilai THDI mengalami penurunan di tiap-tiap SDP. Namun hanya beberapa SDP dengan kandungan THDI yang sesuai dengan standar. Penurunan THDI tertinggi terdapat pada SDP P.AC sebesar 10,63%, dan penurunan terendah terdapat pada SDP IPSRS sebesar 2%. Nilai THDV pada tiap-tiap SDP setelah penambahan Damped Filter juga mengalami penurunan dengan rata-rata penurunan sebesar 1.74%.
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Yoga Prasetya, I. Wayan, I. Nyoman Setiawan, and I. Gede Dyana Arjana. "ANALISIS KETIDAKSEIMBANGAN BEBAN DAN HARMONISA PADA TRANSFORMATOR DISTRIBUSI MI 0096 PENYULANG ABIANBASE." Jurnal SPEKTRUM 7, no. 1 (March 7, 2020): 109. http://dx.doi.org/10.24843/spektrum.2020.v07.i01.p16.
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MI 0096 Distribution Transformer is one of the transformers supplied by Abianbase Feeders.The MI 0096 distribution transformer has a capacity of 100 kVA with a daytime load of 48,5 kVA and a nighttime load of 50,81 kVA. Unequal single-load loads on the transformer result in unbalanced loads on the transformer MI 0096 and the use of non-linear loads results in harmonic distortion on the transformer MI 0096. In this study, carried out a comparison of load imbalance and harmonics that occur during the day and night.The results of the analysis found that the percentage of load imbalance in the MI 0096Distribution Transformer is classified in poor condition that exceeds 25% with the percentage of load imbalances during the daytime at 28,74% and at noon 30,28%. THDv on the MI 0096 Transformer is within the allowable limit of below 5% with THDv at 1,7% during the day and 1,9% at night. THDi in the MI 0096 Distribution Transformer exceeds the allowable standard which exceeds 8%, with THDi during the day 17,5% and at night 24%. Losses caused by the THDi in the MI 0096 transformer have increased along with the increase in THDi in the transformer. Losses without THDi are 0,5 kW, whiletotal losses after being affected by THDi are 5,79 kW during the day and 11,01 kW at night.
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Futri, Ayun Brilian Sharizky, Karnoto Karnoto, and Ajub Ajulian Zahra. "ANALISA HARMONISA TEGANGAN DAN HARMONISA ARUS PADA SISTEM ELEKTRIKAL GEDUNG TEKNIK PWK DAN TEKNIK ARSITEKTUR UNIVERSITAS DIPONEGORO." Transient: Jurnal Ilmiah Teknik Elektro 9, no. 4 (December 17, 2020): 526–31. http://dx.doi.org/10.14710/transient.v9i4.526-531.
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Gedung Teknik PWK dan Teknik Arsitektur Universitas Diponegoro merupakan gedung perkuliahan yang mana di dalamnya terdapat beban non linier yang merupakan sumber utama harmonisa pada sistem kelistrikan berupa peralatan elektronik seperti komputer, AC, dan lighting. Berdasarkan IEEE Std. 519-2014, batas nilai THDv untuk tegangan di bawah 1 kV adalah 8%, dan batas nilai THDi disesuaikan dengan nilai ISC/IL. penulis melakukan kajian studi analisis harmonisa menggunakan pemodelan Single Line Diagram dengan software ETAP 12.6. Simulasi kondisi eksisting menunjukkan bus masing-masing SMDP memiliki nilai THDv dan THDi yang sudah sesuai dengan standar. Kemudian penulis melakukan simulasi harmonisa kembali setelah dilakukan redesain sistem penerangan dan sistem instalasi listrik, didapatkan nilai THDv tereduksi ±59,73% dan THDi tereduksi ±56,53% dari nilai eksistingnya. Dengan nilai THD yang menurun, sistem kelistrikan mengalami peningkatan kualitas daya, tegangan, dan efisiensi. Faktor daya bus trafo dapat mencapai 95,1%, arus menurun ±12 A, tegangan stabil 102-103%, daya reaktif turun hingga 109 kVAR, serta untuk daya aktif dan daya semu cenderung konstan.
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Tupiza, Pablo, Wilson Pavon, Dario Jaramillo, and Patricia Acosta-Vargas. "Strategy for Controlling Total Current Harmonics Distortion by means Photovoltaic Generation with an Unified Active Power Filter (UAPF)." IOP Conference Series: Earth and Environmental Science 1141, no. 1 (February 1, 2023): 012010. http://dx.doi.org/10.1088/1755-1315/1141/1/012010.
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Abstract In this paper, an Unified Active Power Filter (UAPF) is proposed for controlling the current Total Harmonic Distortion (THD) in low voltage distribution networks. The UAPF implements photovoltaic (PV) generation as its source, together with a boost converter. The IEEE 13-bar system is the test-bench, and a non-linear load is in the 7th bus-bar. Thus, discusing the results of the voltage, current and THD in the system. The results were decreasing current (THDi) and voltage (THDv) harmonics, the THDi and THDv reduce to 6 percentage, and 3 percentage, respectively. The results are within the allowed limits in IEEE 1159 standards and ARCERNNR -017/2020 resolution.
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Wartono, Ady, Irzan Zakir, and Massus Subekti. "HARMONISA LISTRIK GEDUNG PUSDIKLAT KETENAGALISTRIKAN ENERGI BARU TERBARUKAN DAN KONSERVASI ENERGI (KEBTKE) CIRACAS (SUATU STUDI PENELITIAN DI GEDUNG UTAMA PUSDIKLAT CIRACAS)." Journal of Electrical Vocational Education and Technology 1, no. 2 (March 20, 2020): 16–20. http://dx.doi.org/10.21009/jevet.0012.03.
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Abstract
Harmonic distortion is a phenomenon arising due to the use of a non linear load on the power system. This phenomenon can cause problems on quality in terms of power will eventually cause various losses and even damage to several electrical appliances. The purpose of this research is to know the value of the harmonic distortion of current/Total Harmonic Distortion (THDi) and voltage/Total Harmonic Distortion (THDv) of electrical installation system Pusdiklat (KEBTKE) Ciracas using by Power Quality Analyzer and load mappings for each floor. This research was carried out at the main building of Pusdiklat KEBTKE on Jl. Poncol Raya No. 39, Ciracas, East Jakarta. Time research was done at 12:15 pm to 7:15 pm, from June 11 until June 15, 2016. The methods used in this research is descriptive analysis methods with quantitative approach, namely the research results which are then processed and analyzed to be taken to summarize. The content of the current harmonic distortion (THDi) on building Pusdiklat KEBTKE in general is above the permitted standard. Measurement data at 12:15 am – 7:15 pm who performed on June 10 to June 14, total harmonics distortion (THDI%) exceeded 15% except at certain times at the moment at least the use of other electronic or computers equipment in each floor of the building. The content of the current harmonic distortion (THDI) generally do not experience interference voltage harmonization. Based on measurement data at 12:15 am – 7:15 pm who performed on June 10 to June 14, total harmonic distortion of voltage distortion (THDV) does not exceed 5%.
Abstrak
Harmonisa merupakan suatu fenomena yang timbul akibat adanya penggunaan beban non linier pada sistem tenaga listrik. Fenomena ini dapat menimbulkan masalah pada segi kualitas daya yang akhirnya akan menyebabkan berbagai kerugian dan bahkan kerusakan pada bebarapa peralatan listrik. Tujuan dari penelitian ini adalah untuk mengetahui nilai harmonisa arus/Total Harmonic Distortion (THDI) dan tegangan/Total Harmonic Distortion (THDV) sistem instalasi listrik ketenagalistrikan energi baru terbarukan dan konservasi energi (KEBTKE). Penelitian ini dilaksanakan pada gedung utama Pusdiklat ketenagalistrikan energi baru terbarukan dan konservasi energi (KEBTKE) Jl.Poncol Raya No.39,Ciracas, Jakarta Timur. Waktu penelitian dilakukan pada pukul 12:15 WIB hingga 19:15 WIB, dari tanggal 11 Juni sampai 15 Juni 2016. Metode yang digunakan dalam penelitian ini adalah metode deskriptif analisis dengan pendekatan kuantitatif. Kandungan harmonisa arus (THDI) pada gedung Pusdiklat ketenagalistrikan energi baru terbarukan dan konservasi energi (KEBTKE) secara umum berada di atas standar yang diiziinkan. Data pengukuran pukul 12:15 WIB – 19:15 WIB yang dilakukan pada tanggal 10 Juni 2016 hingga 14 Juni 2016 distorsi total harmonisa (%THDI) melebihi batas 15% Kecuali pada waktu- waktu tertentu pada saat sedikitnya penggunaan komputer atau peralatan elektronik lain di tiap lantai gedung tersebut. Kandungan harmonisa arus (THDI) secara umum tidak mengalami gangguan harmonisasi tegangan listrik. Berdasarkan data pengukuran pukul 12:15 WIB – 19:15 WIB yang dilakukan pada tanggal 10 Juni 2016 hingga 14 Juni 2016 distorsi total harmonisa tegangan (THDV) tidak melebihi batas 5% .
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Ramli, Zoya Winona, Susatyo Handoko, and Ajub Ajulian Zahra. "ANALISIS DAN PERANCANGAN MITIGASI HARMONIK TEGANGAN DAN ARUS DI POLTEKKES KEMENKES SEMARANG." Transient: Jurnal Ilmiah Teknik Elektro 10, no. 2 (June 3, 2021): 312–18. http://dx.doi.org/10.14710/transient.v10i2.312-318.
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Gedung Pascasarjana Poltekkes Kemenkes Semarang merupakan gedung perkuliahan yang terdiri dari 6 lantai dimana di dalamnya terdapat beban non linear yang merupakan sumber utama harmonik pada sistem, misalnya peralatan elektronik seperti lighting, komputer dan alat pendingin ruangan. Menurut standar IEEE 519-2014, nilai batas pada THDv ialah 8% untuk tegangan di bawah 1 kV dan nilai batas pada THDi disesuaikan dengan perhitungan nilai Isc/IL. Software ETAP 12.6 digunakan dalam pemodelan dan simulasi di Gedung Pascasarjana Poltekkes Kemenkes Semarang. Simulasi kondisi existing menunjukkan beberapa SDP belum memenuhi standar harmonik arus IEEE 519-2014 dimana THDi mencapai 39,22% sementara masing-masing SDP sudah memenuhi standar harmonik tegangan IEEE 519-2014. Berdasarkan kondisi tersebut, dilakukan perancangan filter pasif single tuned. Sesudah pemasangan filter, didapatkan nilai THDi tereduksi hingga 25,61% dan THDv ikut tereduksi hingga 1,44% dari kondisi existing. Selain itu, faktor daya bus trafo mencapai 98,9%, arus turun hingga ±11 A, nilai tegangan 97% - 99%, serta daya reaktif turun sampai 32 kVAR, daya semu turun hingga 8 kVA dengan daya aktif konstan.
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Agus Sudiatma Pratama, I. Nyoman, I. Wayan Rinas, and Antonius Ibi Weking. "SIMULASI PEREDAMAN DISTORSI HARMONISA MENGGUNAKAN FILTER AKTIF DAN ANALISIS RUGI-RUGI DAYA PADA SISTEM KELISTRIKAN DI HOTEL THE BENE KUTA." Jurnal SPEKTRUM 4, no. 2 (January 8, 2018): 113. http://dx.doi.org/10.24843/spektrum.2017.v04.i02.p15.
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A non-linear load operation on a power system will generate harmonics. Operating non-linear loads on the simulated electrical system at the Bene Hotel Kuta created a harmonic current which resulted in power losses. In this study, the simulation used ETAP software, and determined the standard of THD (Total Harmonic Distortion) according to IEEE 519-2014, the standard maximum THDI value 5.0% and THDV maximum 5,0%. Compared the simulation results with the specified standards, installation of a high pass active filter, as well as power loss analysis before and after filter installation. THDI value of simulation result did not still meet the standard, with the average being 9.7%. The installation of a high pass active filter could reduce harmonic distortion with an average THDI value of 1.5% and a THDV value of 0.31%. The total power loss prior to installation of active filter was 153,119.8 Watt and after the installation it became 1,511.2 Watt. The decrease in filter values used 70% of the filter's maximum capability to obtain a more efficient filter, but it still met the specified THD standard. Total loss of power on electrical system was 11,885.5W.
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MARCHTINDRA. AL, Atmam Atmam, and Elvira Zondra. "Analisis Harmonisa Menggunakan Filter Pasif pada Variable Speed Drive (VSD) dengan Beban Motor Electrical Submersible Pump (ESP) di PT. Chevron Pasific Indonesia (CPI)." JURNAL TEKNIK 15, no. 1 (April 23, 2021): 9–17. http://dx.doi.org/10.31849/teknik.v14i2.4029.
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ABSTRAK
Harmonisa merupakan komponen sinusoidal dari sebuah gelombang periodis yang memiliki frekuensi kelipatan bulat dari fundamental frekuensi gelombang periodis tersebut. Bila terjadi superposisi antara gelombang frekuensi dasar dengan gelombang frekuensi harmonisa maka terbentuklah gelombang yang terdistorsi sehingga bentuk gelombang tidak lagi sinusoidal. Adapun penyebab timbulnya harmonisa adalah beban non linier, salah satunya dari penggunaan Variable Speed Drive (VSD) yang berfungsi sebagai penggerak motor Electrical Submersible Pump (ESP) tiga phasa. Untuk mengurangi Total Hamonic Distortion (THD) arus dan tegangan yang dihasilkan oleh VSD maka digunakanlah filter pasif salah satunya filter pasif LC yang hasilnya sesuai dengan batasan harmonisa arus dan tegangan berdasarkan IEEE standar 519-2014. Dari hasil penelitian menggunakan menggunakan filter pasif LC bahwa THDI dan THDV yang dihasilkan oleh VSD 6 pulsa untuk menggerakkan motor ESP tiga phasa di lapangan sumur minyak PT. Chevron Pasific Indonesia yang masih produksi dengan hasil pengukuran pada input filter LC diperoleh THDI sebesar 93,03% dan THDV sebesar 37,6% selanjutnya pada output filter pasif LC diperoleh THDI sebesar 5,93% dan THDV sebesar 4,03%. Untuk desain Filter pasif LC dari perhitungan pada orde ke 36 diperoleh nilai induktor (L) sebesar 0,000054 mH dan kapasitor (C) sebesar 0,0424 μF, selanjutnya pada orde ke 40 diperoleh nilai indukor (L) sebesar 0,000054 mH dan kapasitor (C) sebesar 0,424 μF.
Kata Kunci : Variable Speed Drive (VSD), Filter Pasif LC, Harmonisa.
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Rido Rahmadani. "Analisis Pemasangan Filter Pasif Untuk Mengurangi Harmonisa Pada Transformator Rectifier Di PT. Indah Kiat Pulp And Paper Perawang." SainETIn 3, no. 2 (April 25, 2020): 59–68. http://dx.doi.org/10.31849/sainetin.v3i2.3083.
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The chlor-alkali process is an electrolysis process which plays an important role in the chemical industry such as the pulp industry. The process produces a product in the form of H2 gas, CL2 gas and NaOH (where the source of chloride ion used is NaCl). This electrolysis process requires a dirrect current with a large current and a low voltage. In this electrolysis process a three phase controlled 12 pulse rectifiers are used which a connected with multi-winding transformers. In the rectifiers process there will be harmonic distortion on the source side of the transformer which can reduce the power quality of the system. To overcome the harmonic problems that occur in the system, an installation analysis of the equipment in the form of a passive single tuned filter is aimed at reducing harmonic distortion of current and voltage and increasing the power factor (cos φ). From the result of harmonic analysis using ETAP software, after the installation of harmonic filters orde 11, 13 and 23, the harmonic current value (THDI) and harmonic voltage (THDV) has decreased, namely, before the filter installation, THDI value is 6,5% whereas after installation of filters, THDI value becomes 0,98%, thus there is a THDI decrease of 5,52%. Furthermore, for the voltage harmonic value (THDV) before filter installation is 1,48% while after filtering, THDV value becomes 0,26%, thus there is a THDV decrease of 1,22%. From the results of the simulation of the flow of power (load flow analysis), after installation of filters there is an increase in the value of the power factor (cos φ). Namely, before the filter installation, the value of power factor (cos φ) is 0,8 while after the filter installation the value of the power factor (cos φ) to 0,96, thus an increase in the power factor (cos φ) of 16%.
Keywords : harmonic filter, single tuned filter, power factor, transformer rectifier
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Cahyadi, Catra Indra, I. Gusti Agung Ayu Mas Oka, and Yanti Daryanti. "Pengaruh Harmonic pada Peralatan Tegangan Satu Phasa di Ruangan Administrasi Bandara." TELKA - Telekomunikasi Elektronika Komputasi dan Kontrol 7, no. 1 (May 24, 2021): 71–76. http://dx.doi.org/10.15575/telka.v7n1.71-76.
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Beban non linier yang belum berbentuk gelombang sinusoidal telah terdistorsi oleh distorsi harmonisa arus. Beban non linier merupakan salah satu penyebab timbulnya distorsi yang dapat mengakibatkan kualitas daya listrik semakin buruk. Paper ini membahas hasil simulasi penggunaan filter tunggal yang disetel untuk mengurangi distorsi yang disebabkan oleh beban non linier akibat personal computer dan printer untuk pencetakan. Pengukuran menggunakan alat power quality analyzer fluke. Hasil pengukuran terhadap 4 merk PC yang berbeda menunjukan bahwa nilai beban non linier yang dihasilkan mengalami penurunan. Beban personal komputer merk A dari THDi sebesar 120,7 % menurun menjadi 110,8% , merk B dari THDi sebesar 121,9% menjadi 109,9 %, merk C dari THDi sebesar 150,1% menurun menjadi 100,2 %, merk D dari THDi sebesar 176,2% menurun menjadi 104,1 %. Penurunan total harmonic distorsion arus setelah direduksi sebesar 0,8 – 1 %. Penggunaan filter berhasil menurunkan nilai THDi. Non-linear loads that have not been in the form of sinusoidal waves have been distorted by current harmonic distortion. Non-linear loads, one of the causes of distortion can cause the quality of electric power to get worse. Research on the simulation method uses a single filter as a filter that is adjusted to reduce distortion caused by non-linear loads using personal computers and printers for printing machines. Where the measurement uses a Fluke Power quality analyzer, the resulting non-linear load value is obtained on non-linear loads with personal computer loads brand A has a THDi of 120.7% decreasing to 110.8%, brand B THDi of 121.9% becomes 109.9%, the C THDi brand by 150.1% decreased to 100.2%, the D THDi brand by 176.2% decreased to 104.1% where the decrease in the total harmonic current distortion after reduction was 0.8 - 1%. The use of a filter was successful in lowering the THDi value.
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Dwipayana, I. Gusti Ngurah, I. Wayan Rinas, and I. Made Suartika. "Analisis THD dan Peningkatan Arus pada Kawat Netral Akibat Pengoperasian Beban Non Linier yang Tak Seimbang pada Sistem Tenaga Listrik di RSUD Kabupaten Klungkung." Majalah Ilmiah Teknologi Elektro 16, no. 3 (December 29, 2017): 92. http://dx.doi.org/10.24843/mite.2017.v16i03p15.
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Pengopersian beban-beban listrik non-linier akan mengakibatkan terjadinya distorsi pada bentuk gelombang arus dan tegangan. Ketidakseimbangan beban pada sistem tenaga listrik akan berpengaruh pada prosentase harmonisa dan nilai arus netral (IN) yang mengalir pada kawat netral sistem tersebut.. Analisa sistem pada penelitian ini menggunakan program simulink MATLAB. Hasil penelitian yang dilakukan pada kondisi beban seimbang dengan beban linier, nilai arus netralnya adalah 0. Pada kondisi beban tak seimbang dengan beban linier nilai arus netralnya adalah 45,76 A. Pada kondisi beban seimbang dengan beban non linier nilai arus netralnya 61,62 A dengan prosentase THDv pada fasa R 1,49% ; S 1,47% ; T 1,48% dan THDi pada fasa R 16,38% ; S 16,31% ; T 16,19%. Pada kondisi beban tak seimbang dengan beban non linier terjadi peningkatan arus netral dan THD yaitu nilai arus netral 65,5 A dengan prosentase THDv pada fasa R 1,61% ; S 1,49% ; T 1,46% dan THDi pada fasa R 18,47% ; S 16,57% ; T 15,84%.
[Turnitin 19%, 13042017]
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Widjonarko, Widjonarko, Samsul Bachri, and Trio Putra Oktavianus. "Total Harmonic Distortion and Power Factor Analysis of Thyristor Firing Angle on Electrostatic Precipitator in PLTU Unit 3 & 4 Pangkalan Susu Capacity 2 X 200 MW." Frontier Energy System and Power Engineering 3, no. 1 (January 1, 2021): 28. http://dx.doi.org/10.17977/um049v3i1p28-35.
Full textAbstract:
The impact of pollution resulting from exhaust gas in the form of coal ash in the Steam Power Plant makes the Electrostatic Precipitator an equipment that can handle these problems. The equipment has a voltage level regulation system using a thyristor which with a certain value can create an electric field capable of capturing charged ash. The thyristor system has a disturbance known as harmonics. Good handling to overcome harmonics is to measure using a certain index, one of which is the Total Harmonic Distortion (THD) and to know its effect on the power factor. In this research, an analysis of the electrostatic precipitator system at PLTU Pangkalan Susu will be carried out by collecting the necessary data and the firing angle installed in the company. From the test results, it can be said that the THD value in the Electrostatic Precipitator system at PLTU Units 3 & 4 Pangkalan Susu is in the normal range. To find out the range of compatible firing angles on the system, it is also necessary to provide a test variable angle. Based on the test, it is known that the firing angle installed in the company is 46 degree with THDv and THDi of 4.01 percent and 3.61 percent respectively and the Power Factor is 0.84876. Whereas with the test variable angle, it is known that the good or normal THDv and THDi values are in the range 30 degree to 60 degree where the THDv value is in the range of 3.83 percent to 4.91 percent and the THDi value is in the range of 3.50 percent to 4. 21 percent.
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Ibar-Alonso, R., C. Cosculluela-Martínez, and GJD Hewings. "Time indicator of the Human Development Index." Time & Society 28, no. 1 (July 6, 2017): 273–96. http://dx.doi.org/10.1177/0961463x17716553.
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The Human Development Index, computed by the United Nations, has been challenged since it does not measure the real development of a country. It needs to be combined with other indexes and ratios (poverty, Gini index). Using the same data as the United Nations, an additional dimension (time) is added to create a Time Human Development Index (THDI) where the weights differ for each cluster of countries. Fisher discriminant functions classify countries in each period of time, allowing different weights of the variables for the same country each year. Results suggest that when the Literacy and gross enrolment rates decrease in the four countries occupying the lower positions in the THDI, the THDI falls. In those countries where the THDI increases, gross domestic product and life expectancy rates do not seem to be positively correlated to the THDI, while the gross enrolment rate also increases. Thus, gross enrolment and literacy rates are variables related to the evolution of THDI; while, surprisingly, gross domestic product and life expectancy has few influence in its evolution.
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Adi Wirajaya, I. Putu, I. Wayan Rinas, and I. Wayan Sukerayasa. "Studi Analisa Pengaruh Total Harmonic Distortion (THD) terhadap Rugi-Rugi, Efisiensi, dan Kapasitas Kerja Transformator pada Penyulang Kerobokan." Jurnal SPEKTRUM 6, no. 2 (June 1, 2019): 121. http://dx.doi.org/10.24843/spektrum.2019.v06.i02.p17.
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Kerobokan feeder supply electrical energy in the area of Kerobokan. This feeder supplies 67 distribution transformers that serve a variety of customers with nonlinier electrical loads. Nonlinier electrical loads cause harmonics which adversely affect customers and power system equipment, especially distribution transformers. In Kerobokan feeder, only 3 (4.5%) of the 67 transformers has THDi content that according with the IEEE 519-2014 standard and 64 (95.5%) of the 67 transformers has a high THDi content and exceed the IEEE 519-2014 standard. For this reason, the power losses, efficiency, and work capacity of the transformer are analyzed due to the effect of THDi. This study uses a direct measurement method in all transformers in the Kerobokan feeder and simulation on the ETAP Powerstation program. The results of the analysis showed that total power losses without being affected by THDi for all transformers were 49.4 kW and after being affected by THDi were 591.71 kW. The highest THDi content is in the KA 0992 transformer is 24.8% which results in an increased in power losses is 12.02 kW or 12.02% of its capacity and a decreased in efficiency is 12.66% and has a decreased in work capacity is 19.9%. While the smallest THDi content is found in the DB 449 transformer is 6.8% which results in an increased in power losses is 2.2 kW or 0.88% of its capacity and a decreased efficiency is 1.01% and has a decreased in work capacity is 2.7%.
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Silalahi, Eva Magdalena, Bambang Widodo, and Robinson Purba. "Analisis Total Harmonic Distortion (THD) dan Arus Harmonik Akibat Penggunaan Lampu Hemat Energi (LHE) dan Light-Emitting Diode (LED) secara Kolektif Pada Jaringan Tegangan Rendah." Jurnal Fokus Elektroda : Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) 6, no. 1 (February 28, 2021): 54. http://dx.doi.org/10.33772/jfe.v6i1.16044.
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Currently, people are increasingly using energy saving lamp (LHE) and LED because of their energy saving and low power consumption. But the use of LHE and LED in large quantities can reduce the quality of electric power. This is because LHE and LED are classified as non-linear loads which are a source of harmonic distortion for low-voltage power lines. Harmonic distortion occurs due to non-linear load currents that experience distortion or defects. Based on this, this study aims to investigate the effect of the collective use of LHE and LEDs on the quality of electrical power, such as: harmonic levels, power factor, and the resulting harmonic current and voltage waveforms. The results of this study indicate that the simultaneous use of LHE and LED with a total of 60 pieces causes distortion of the current waveform with THDi of 63.97% exceeding the standard value of IEEE Std 519-2014, with dominant harmonic currents in the 3rd order with a THDi of 74% and order 5 with a THDi of 37.6% and a THDv value of 2.44%, still below the 5.0% standard of IEEE Std 519-2014. This high THDi value has a negative impact on the low PF value of 0.722, which does not meet the power factor requirements of ≥ 0.85 according to PLN standards. And if the true power factor (TPF) value is calculated, the TPF value is 0.608 which is lower than the PF value of 0.722. The results obtained from the Matlab simulation show conformity to the results obtained from experimental measurements in the laboratory, namely: the simulated harmonic waveform approximates the measured harmonic waveform.
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Ramadhani, Ummi Khofifah Qodariah, Asmar Asmar, and Wahri Sunanda. "Pengaruh Total Harmonic Distortion Terhadap Power Factor Pelanggan Rumah Tangga 900 – 2200 VA Dusun Tujuh Bubung Kepulauan Bangka Belitung." AVITEC 4, no. 2 (August 2, 2022): 177. http://dx.doi.org/10.28989/avitec.v4i2.1290.
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The high content of harmonics in an electric power system can cause several disturbances to the system, such as increasing power losses in the system, causing various damage to electrical equipment, and causing the use of electrical energy to be ineffective. Harmonics is caused by the operation of non-linear electrical loads. The interacting harmonic currents with the supply system impedance distorts the supplier's output current and voltage which in turn adversely affects the loads connected to the system and the supply itself. This study aims to analyze the quality of THD in Bubung Tujuh Hamlet, Sangku Village. In this study, THD measurements were carried out and analyzed the effect of harmonics on the power factor using a linear regression test. The results of the measurement and analysis of THDV ranged from 1.0% - 6.8%, with the final analysis of THDV still meeting the set standard of 5%. THDI ranged from 2.3% - 66.7% with the final analysis THDI did not meet the standard. THD of the village's electrical system is still at the standard limits set and THD(V) effect on PF.
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Ramdipa Amerta, I. G. N. Nanda, I. Wayan Rinas, and I. G. N. Janardana. "Analisis Pengaruh Nilai Resistansi untuk Pentanahan Kawat Netral Terhadap THD Arus di Fakultas Teknik Universitas Udayana – Sudirman." Jurnal SPEKTRUM 5, no. 2 (December 18, 2018): 167. http://dx.doi.org/10.24843/spektrum.2018.v05.i02.p21.
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Harmonics is a periodic sine wave distortion, due to the operation of nonlinear loads. Har-monics causes current to flow in the neutral wire even though in a balanced load condition, in addition to harmonic load imbalance problems will increase the current flowing in the neutral wire, making it dangerous for the electrical system. This research was using electrical system modeling simulation in MATLAB application by changing the earth resistance value to see the effect of earth resistance value to Total Harmonic Current Distortion (THDi), it is necessary to analyze the effect of resistance value for THDi neutral wire grounding. This study uses the Fast Fourier Transform (FFT) method. THDi simulation results when the conditions of the resistance value is 9 ?, THDi percentage in phase R is 6.30%, Phase S is 2.86%, Phase T is 2.50%. When the earth resistance value is 5 ?, the percentage of THDi decreases with the value in phase R is 6.09%, Fasa S is 2.61%, Fasa T is 2.48%. When the earth resistance value is 2 ?, the THDi percentage in the R phase is 5.85%, Fasa S is 2.09%, Fasa T is 2.22%. Based on the simulation results it is known that the smaller the earth resistance value, the smaller the harmonic distortion in the electrical system.
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Richard, Laurensius Richard Mulyadi, and Insani Abdi Bangsa. "STUDI ANALISA PERHITUNGAN NILAI HARMONIK TEGANGAN DAN ARUS PADA BUDDHA TZU CHI HOSPITAL." Aisyah Journal Of Informatics and Electrical Engineering (A.J.I.E.E) 5, no. 1 (February 27, 2023): 30–38. http://dx.doi.org/10.30604/jti.v5i1.124.
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ABSTRACT
The occurrence of harmonics is caused by the non-linear operation of the electrical load. The level of harmonic distortion or what is called Total Harmonic Distortion (THD) in a transformer can cause losses that affect the efficiency of the transformer. In this study, THD measurements were carried out on four transformers at Tzu Chi Hospital. This research was conducted using observation, documentation, and direct measurements in the field to analyze within the limits of the IEEE 519-2014 standard. The purpose of this study was to analyze the main electrical system at Tzu Chi Hospital, analyze the value of Total Harmonic Distortion (THD) for voltage analysis. and currents at Tzu Chi Hospital. THDv based on the measurement results are transformer 1 4.8%, transformer 2 2.48%, transformer 3 1.51%, transformer 5 5%. While the THDi results obtained after measurement are transformer 1 20.2%, transformer 2 29 ,4%, transformer 3 14.78%, transformer 5 37.8%. Even after measurement, THDv was found to conform to the IEEE 519-2014 standard, and THD was found to be non-compliant with the IEEE 519-2014 standard.
ABSTRAK
Timbulnya harmonik disebabkan oleh operasi beban listrik non-linier. Tingkat distorsi harmonik atau yang disebut dengan Total Harmonic Distortion (THD) pada suatu trafo dapat menimbulkan rugi-rugi yang mempengaruhi efisiensi trafo. Pada penelitian ini dilakukan pengukuran THD pada empat trafo di Rumah Sakit Tzu Chi. Penelitian ini dilakukan dengan metode observasi, dokumentasi, dan pengukuran langsung di lapangan untuk menganalisis kesesuaian dengan batasan standar IEEE 519 2014. Tujuan dari penelitian ini adalah untuk menganalisis sistem kelistrikan utama di Rumah Sakit Tzu Chi, menganalisa perhitungan nilai Total Harmonic Distortion (THD) untuk tegangan dan arus di Rumah Sakit Tzu Chi. THDv berdasarkan hasil pengukuran yaitu transformator 1 4,8%, transformator 2 2,48%, transformator 3 1,51%, transformator 5 5%.sedangkan THDi hasil yang didapat setelah dilakukan pengukuran adalah transformator 1 20,2%, transformator 2 29,4%, transformator 3 14,78%, transformator 5 37,8%. Bahkan setelah pengukuran, THDv diketahui sesuai dengan standar IEEE 519 2014, dan THDi diketahui tidak sesuai dengan standar IEEE 519 2014.
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Dwi Nugroho, Gregorius Reza, I. Wayan Rinas, and I. Wayan Arta Wijaya. "Analisa Total Harmonic Distortion dan Losses Setelah Beroperasinya Distributed Generation di Program Studi Teknik Elektro Universitas Udayana." Jurnal SPEKTRUM 6, no. 1 (May 10, 2019): 125. http://dx.doi.org/10.24843/spektrum.2019.v06.i01.p18.
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In the Electrical Engineering Study Program, Udayana University, a Solar Power Plant was installed with a power of 26.4 kWp, a Wind Power Plant with a power of 5 kWp and a Diesel Power Plant with a capacity of 20 kVA. The size of harmonics in the electric power system is called Total Harmonic Distortion (THD). THDi's research results at DH Electrical Engineering Building of Udayana University before the operation of Distributed Generation (DG) were that R phase was 9.91%, S phase was 10.86%, and T phase was 9.85%. THDi value after the operation of Distributed Generation, R phase was 16.05%, S phase was 17.53%, and T phase was 15.70%. THDi value with LC filter, R phase was 4.0%, S phase was 5.52% and T phase was 3.97%. THDv value before the operation of Distributed Generation, R phase was 0.08%, S phase was 0.48% and T phase was 0.47%. THDv value after the operation of Distributed Generation, R phase was 0.24%, S phase was 0.44% and T phase was 0.49%. THDv value with LC filter, R phase was 0.01%, S phase was 0.01% and T phase was 0.02%. The results of the research showed that losses before the operation of Distributed Generation were 115.53 Watts and the value of losses after the operation of Distributed Generation had increased to 130.07 Watts.
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Ahsan, Syed Muhammad, Hassan Abbas Khan, Akhtar Hussain, Sarmad Tariq, and Nauman Ahmad Zaffar. "Harmonic Analysis of Grid-Connected Solar PV Systems with Nonlinear Household Loads in Low-Voltage Distribution Networks." Sustainability 13, no. 7 (March 26, 2021): 3709. http://dx.doi.org/10.3390/su13073709.
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Grid-connected rooftop and ground-mounted solar photovoltaics (PV) systems have gained attraction globally in recent years due to (a) reduced PV module prices, (b) maturing inverter technology, and (c) incentives through feed-in tariff (FiT) or net metering. The large penetration of grid-connected PVs coupled with nonlinear loads and bidirectional power flows impacts grid voltage levels and total harmonic distortion (THD) at the low-voltage (LV) distribution feeder. In this study, LV power quality issues with significant nonlinear loads were evaluated at the point of common coupling (PCC). Various cases of PV penetration (0 to 100%) were evaluated for practical feeder data in a weak grid environment and tested at the radial modified IEEE-34 bus system to evaluate total harmonic distortion in the current (THDi) and voltage (THDv) at PCC along with the seasonal variations. Results showed lower active, reactive, and apparent power losses of 1.9, 2.6, and 3.3%, respectively, with 50% solar PV penetration in the LV network as the voltage profile of the LV network was significantly improved compared to the base case of no solar. Further, with 50% PV penetration, THDi and THDv at PCC were noted as 10.2 and 5.2%, respectively, which is within the IEEE benchmarks at LV.
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Janardana, I. G. N., I. W. Arta Wijaya, and I. N. Karnata Mataram. "Effect Of Value Of Resistance Announcement To Thd In Electrical System Faculty Of Engineering University Udayana Denpasar." Journal of Electrical, Electronics and Informatics 2, no. 1 (February 10, 2018): 21. http://dx.doi.org/10.24843/jeei.2018.v02.i01.p05.
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AC (Air Conditioner), TV, lamp, LCD and others are categorized as nonlinear load generating harmonics. The high content of harmonics has a negative impact on the quality of electrical power. The result of measurement of THD (Total Harmonic Distortion) current at 9 ohm ground resistance value at phase R = 9,8%, phase S = 11,0%, phase T = 7,5% exceed from standard value IEEE 519 Year 2014 equal to ? 5 , 0%, THD measurement of phase voltage R = 1.4%, phase S = 1.2%, phase T = 1.3%, meet the maximum THDv standard of ? 5%. To overcome this problem, it was observed the effect of the value of ground resistance to THDi and THDv on the electrical system of the College of Engineering Faculty of Denpasar. This method of analysis with ETAP software simulation. With grounding system ? 3 ohm only effect on current THD only with decreasing value of THDi become: phasa R = 4,2%, phase S = 5% and phase T = 4,3%, meaning with grounding system ? 3 ohm THD current fulfill IEEE 519 - 2014 standard <5%. while THD voltage has no effect (THD value of fixed voltage). Several studies have suggested that THD repair can be done by filter installation. However in this study the installation of grounding system ? 3 ohms can reduce the value of current THD.
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Hasan, Ghanim, Muhamad Salih, and Ali Mutlaq. "Study the Effect of Serial Inductance on Reducing the Current Harmonic Distortion of Three-Phase Bridge Rectifier." Tikrit Journal of Engineering Sciences 25, no. 3 (August 8, 2018): 1–4. http://dx.doi.org/10.25130/tjes.25.3.01.
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The aim of this paper is to analyze the influence of adding serial inductance in AC side of the 3ph -6 pulse bridge rectifier on the reduction of harmonic distortion rate. A simulated model with serial inductance was analyzed. The 3-phase 6-pulse diode bridge rectifier was chosen because it corresponds to the operation of the 6-pulse thyristor bridge rectifier at maximum load (while keeping the angle α = 0). Both the total harmonic distortion (THDi) and the power factor (PF) for the circuit have been measured. The results obtained of the THDi has been recorded for four values of serial inductance and results was compared with the (IEEE 519-1992) standard. Comparison results indicates that for values of inductive reactance (Xi) up to 67% cause a reduction of THDi which is above the standard values, while for (Xi) more than 67% cause a reduction in THDi within the acceptable standard level. Analyzing of results prove that the adding of serial inductance at the AC side leads to good reduction in harmonic distortion rate, but with some reduction in power factor value, which results in some energy losses.
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Susanto, F., E. M. Silalahi, S. Stepanus, B. Widodo, and R. Purba. "Simulation of passive filter design to reduce Total Harmonic Distortion (THD) in Energy-Saving Lamps (LHE) and Light Emitting Diodes (LED)." IOP Conference Series: Earth and Environmental Science 878, no. 1 (October 1, 2021): 012059. http://dx.doi.org/10.1088/1755-1315/878/1/012059.
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Abstract This paper discusses the design of a passive filter system for Energy-Saving Lamps (LHE) and Light Emitting Diodes (LED) using the MATLAB Simulink software. This type of lamp is a type of non-linear load that produces harmonics of current and voltage. However, this harmonic problem can be reduced using passive filters. To determine the size of the passive filter components, research was carried out in the form of measurements of power, power factor, voltage, current, THDi and THDv produced by the LHE and LED. The results of these measurements were simulated using MATLAB Simulink to determine the passive filter design that reduces the THD value on the LHE and LED. To reduce the level of current harmonics, a single tuned LC passive filter was designed. The filter, designed to work at a frequency of 50 Hz and is expected to reduce the level of harmonics in the 3rd, 5th, 7th, 9th, 11th harmonic orders so that the THD produced by LHE and LED meets the IEEE 519-2014 standards. The simulation results of single tuned LC passive filter design can reduce THDi by 46.78% from the initial THD of 84.55% so that it becomes 37.77%.
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Dwi Ade Saputra, G. A. M., I. Wayan Rinas, and I. Made Suartika. "Studi Analisis Pengaruh Filter Aktif Berbasis Fuzzy Logic Controller Untuk Mereduksi Harmonisa Akibat Beban Non Linier." Jurnal SPEKTRUM 6, no. 2 (June 1, 2019): 24. http://dx.doi.org/10.24843/spektrum.2019.v06.i02.p04.
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Electrical equipment categorized as the nonlinear load will cause harmonics. Harmonic is a periodic distortion of the sine wave that can cause a negative impact on electronic equipment components. One way to improve power quality is to reduce harmonics using harmonic filters. In this study, an analysis of the system was carried out before adding a filter and after adding an active filter based on a fuzzy logic controller. The application of the fuzzy logic method on filters functions to reduce over switching in the inverter so that it can reach the lowest THDi value. THDi simulation results when the existing conditions are in phase R, S, T; at 14%, 17%, 14%. When the active filter condition is without control, the THDi percentage at the R phase is 6%, the S phase is 6%, the T phase is 4%. In the active filter conditions based on the fuzzy logic controller the percentage of THDi in phase R, S, T; is 0.9%, 0.9, 1%. Based on the simulation results introduced in the active filter based fuzzy logic controller is able to reduce harmonic distortion to the lowest value, so the use of fuzzy logic in active filters can be used in the harmonic filtering process in the electrical system.
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Satcitananda P, I. G. B., I. W. Rinas, and I. G. N. Janardana. "ANALISIS PENGARUH NILAI TAHANAN PEMBUMIAN TITIK NETRAL TRANSFORMATOR TERHADAP PERUBAHAN THD ARUS DAN RUGI-RUGI DAYA DI RSUD KLUNGKUNG." Jurnal SPEKTRUM 7, no. 1 (March 7, 2020): 191. http://dx.doi.org/10.24843/spektrum.2020.v07.i01.p27.
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Harmonics causes an increase in the current flowing in the neutral wire due to the use of unbalanced non-linear loads. THDisimulation was conducted in this study using MATLAB Simulink software and calculating power losses. Based on themeasurement results it is known that THDi transformer one exceeds the standards set by IEEE 519-2014. THDi simulationresults in the existing conditions show the percentage of phase R of 17.27%, S phase of 16.40%, phase T of 16.24% with acurrent flowing on a neutral wire of 19.64 A. Based on the results of simulations with earth resistance 11? shows thepercentage of THDi in the R phase 15.69%, S phase 14.70%, T phase 9.83% and the current flowing on the neutral wire is1.013 A. When the earth resistance is changed to 8? THDi in the R phase by 15.62%, the phase S 14.67%, T phase 9.81% withcurrent flowing on neutral wire 1,297 A. While the earth resistance is reduced to 4? THIn the R phase 13.57%, S phase 14.51%,T phase 9.80% and the current flowing on the neutral wire is 2,518 A. The power losses in the one-time transformer when theexisting conditions are 8,796 kW, while the earth resistance 11? is 6,079 kW, while the ground resistance 8? is 6,032 kW, andwhen 4? is 5,880 kW.
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Nisja, Indra. "Performance of current transformer operate under harmonic condition and their effects on transformer differential protection." MATEC Web of Conferences 159 (2018): 02075. http://dx.doi.org/10.1051/matecconf/201815902075.
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This paper focused to determine the performance of Current Transformer (CT) operates under harmonics condition and their effects on transformer differential protection. A laboratory test has been implemented to determine the error produced by both CT and power transformer when operating under harmonic condition. The test was performing with the actual condition, where the power transformer is connected to an adjusted nonlinear load, so that the test can be conducted with several levels of total harmonic distortion current (THDi). The results shows, for THDi ranging from 16.70% to 40.88% the maximum errors occurred on CT at secondary power transformers is 27.21% and CT at primary power transformers is 8.12%. This error resulted in differential current flow 0.17A and relay trip without any fault. In this study it was found that the relays started to operate incorrectly on THDi 31.5%.
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Chowdhury, Md Sazzad Hossien, Md Alal Hosen, MOHAMMAD YEAKUB ALI, and AHMAD FARIS ISMAIL. "An analytical technique to obtain higher-order approximate periods for nonlinear oscillator." IIUM Engineering Journal 19, no. 2 (December 1, 2018): 182–91. http://dx.doi.org/10.31436/iiumej.v19i2.943.
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ABSTRACT: This paper presents simulation results of the influence of wide range modulation index values ( ) in carrier-based PWM strategy for application in generating the stepped waveform. The waveform is tested for application in single-phase half-bridge modular multilevel converters (MMCs) topology. The results presented in this paper include a variation of the fundamental component (50 Hz) in the voltage output. It also studies total harmonic distortion of the output voltage (THDv) and the output current (THDi) when the modulation index is changed over the linear-modulation region, 0 < < 1. It also explores the effect of a modulation index greater than 1. Moreover, different output voltage shapes, as a consequence of varied on MMCs, are also illustrated for showing the effect of varying the value of on sub-module of MMCs.
ABSTRAK: Penulisan ini berkenan simulasi pengaruh pelbagai nilai indeks modulasi ( ) dalam strategi PWM berasaskan aplikasi dalam menghasilkan bentuk gelombang yang bertingkat. Bentuk gelombang ini diuji untuk aplikasi dalam topologi MMCs. Penilaian dan hasil dari artikle ini termasuk variasi komponen asas (50 Hz) dalam voltan keluar. Ia juga meneliti jumlah penyelarasan harmonik voltan keluar (THDv) dan arus keluaran (THDi) apabila indeks modulasi ditukar dalam rantau modulasi linear, 0 < <1. Ia juga meneroka kesan indeks modulasi lebih daripada 1. Selain itu, bentuk voltan keluar yang berbeza sebagai akibat dari pelbagai pada MMCs juga digambarkan untuk menunjukkan kesan berbeza-beza nilai pada sub-modul MMCs.
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Bartman, Jacek, and Dariusz Sobczyński. "Analysis of the influence of selected non-linear devices on the waveform of supply voltage." ITM Web of Conferences 21 (2018): 00019. http://dx.doi.org/10.1051/itmconf/20182100019.
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The paper presents research on the influence of selected non-linear devices on the shape of supply voltage. It has been assessed how current distortion, expressed by THDI, and rms current ‖i‖ influence voltage distortion, represented by THDU. For this purpose, an induction generator with a power comparable to that of the loads was used to power the loads. The devices were selected in such a way as to increase current distortion with the decrease of rms current. The measurements were made with a class A energy quality analyzer.
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Yusuf, Erwin, and Wiwit Kastawan. "Karakteristik Harmonisa Pada Sistem Daya Listrik Air Handling Unit (AHU) Industri Farmasi." Jurnal Teknik Energi 10, no. 1 (January 3, 2021): 1–6. http://dx.doi.org/10.35313/energi.v10i1.2311.
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Industri farmasi merupakan salah satu jenis industri yang banyak menggunakan beban non-linier, khususnya variable speed drive (VSD). VSD umum digunakan sebagai penggerak motor listrik untuk pompa, kompresor atau blower yang banyak digunakan dalam berbagai proses di industri farmasi. Namun perlu diperhatikan bahwa penggunaan VSD dapat membawa dampak buruk terhadap sistem daya listrik di industri bersangkutan. Salah satunya adalah permasalahan kualitas daya berupa munculnya harmonisa pada sistem daya listrik. Berdasarkan data pengukuran lapangan, harmonisa arus pada sistem distribusi daya listrik untuk unit AHU dari sebuah industri farmasi yang dipilih sebagai objek studi masih berada di bawah standar IEEE 519-1992. Nilai total harmonic distortion arus (THDi) yang terukur mencapai kisaran 40% – 50% dengan harmonisa ke-5, ke-7 dan ke-11 merupakan orde-orde harmonisa yang dominan. Simulasi dengan perangkat lunak ETAP menunjukkan nilai THDi sebesar 44,15% dengan spektrum yang mirip dengan data pengukuran lapangan. Perbedaan antara nilai THDi yang berdasarkan pengukuran lapangan dan simulasi mencapai kisaran 3% saja. Hasil simulasi dapat memverifikasi hasil pengukuran lapangan.
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Widia, Riza, Herisajani Herisajani, and Witrionanda Witrionanda. "PREDIKSI DISTORSI HARMONISA PADA UTILITY LISTRIK PERUMAHAN YANG DISEBABKAN OLEH BEBAN NONLINIER MENGGUNAKAN STATISTIK PERBANDINGAN LINIER." Elektron : Jurnal Ilmiah 1, no. 1 (September 10, 2009): 49–59. http://dx.doi.org/10.30630/eji.1.1.9.
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Loads of electricity utility consists of linear loads and non linear loads. The non linear loads for example TV, personal computer, VCD player, microwave and fluorescent lamp using electronics ballast. Loads with non linear characteristics become harmonic current source to electricity utility. Condition prediction used statistic linear comparison based on load power to THDi (Distortion of Harmonic Current). Measurement result using power quality analyzer and etap 4.0 (Fluke 43B) find typical THDi. The calculation and measurement result of PF and THD to loads of electricity utility show the differences less than 5%. However power factor formulation and distortions of harmonic current is valid
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Nisja, Indra, A. Z. Abdullah, S. Masri, and S. Hardi. "Laboratory Test of Current Transformer Operates under Harmonic Conditions." Applied Mechanics and Materials 793 (September 2015): 222–25. http://dx.doi.org/10.4028/www.scientific.net/amm.793.222.
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This research focused on the effect of harmonic to the performance of current transformer (CT) operates under harmonic conditions. Due to the increasing of harmonic in power system, the CT did not perform well. The CT may saturates due to the presence of voltage and current harmonics. In this project, a laboratory test was conducted to investigate and analyze the influence of harmonics to the CT performance. This CT has been test with different Total Harmonic Distortion Current (THDi) at primary side and constant primary current. The experiment result shows the secondary current CT errors will increases when THDi increases.
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Mumtaz, Fahmi Naufala, Indhana Sudiharto, and Ony Asrarul Qudsi. "Shunt Active Power Filter Untuk Peredaman Harmonisa Pada Inverter V/F Konstan Pengatur Kecepatan Motor Induksi Tiga Fasa." JTT (Jurnal Teknologi Terpadu) 9, no. 2 (November 8, 2021): 131–41. http://dx.doi.org/10.32487/jtt.v9i2.1176.
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Pengemudian elektrik untuk motor induksi tiga fasa mampu menghemat biaya operasional di industri. Metode V/F konstan adalah pengaturan yang hanya mengatur besaran tegangan dan frekuensi pada motor induksi tiga fasa. Pada saat yang sama, inverter V/F konstan dapat menyebabkan harmonisa pada saat melakukan pengemudian elektrik dan harmonisa ini akan mengurangi faktor daya dengan meningkatkan total harmonic distortion (THD). Kehadiran harmonisa dalam sistem dapat berdampak negatif pada sistem tenaga dan dapat berpotensi merusak peralatan. Dalam artikel ini diusulkan suatu filter aktif yang mampu mengurangi harmonisa pada inverter V/F pengatur kecepatan motor. Filter aktif yang digunakan adalah jenis shunt active power filter (SAPF) dengan pengontrol injeksi arus berupa PWM Hysteresis Current Control dan pengontrol DC-link Voltage menggunakan Fuzzy Logic Controller (FLC). Hasil simulasi menunjukkan bahwa sebelum pemasangan SAPF, nilai THDi yang dihasilkan oleh inverter V/F masih belum memenuhi standar yang ditoleransi oleh IEEE 519 yaitu kurang dari 5%. Ketika menggunakan PI-SAPF, THDi yang dihasilkan bisa kurang dari 2,75% baik pada motor 370 W, 4000 W, maupun 7500 W. Sedangkan FLC-SAPF dapat meredam harmonisa lebih baik lagi, THDi yang dihasilkan kurang dari 0,6% baik pada motor 370 W, 4000 W, maupun 7500 W.
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Satriya Dhinata, IK, AAG Maharta Pemayun, and IB Gede Manuaba. "PENGARUH FILTER AKTIF DENGAN PENGATURAN DAYA REAKTIF TERHADAP EFISIENSI TRAFO BERBASIS SIMULINK." Jurnal SPEKTRUM 8, no. 4 (January 8, 2022): 147. http://dx.doi.org/10.24843/spektrum.2021.v08.i04.p17.
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Harmonic distortion usually occurs due to the operation of excessive non-linearelectrical loads, this distortion can be reduced by utilizing an active harmonic filter which canusually be adjusted for reactive power on the filter. In this study, an analysis of reactive powersettings on the active filter was carried out to determine the efficiency value obtained byfollowing the IEEE 519 - 2014 THDi standard value of 8% for each phase. The results of theanalysis of the smallest reactive power setting but exceeding the transformer efficiency valuewhen the existing condition meets the IEEE 519 - 2014 standard is 40 % with the THDi value forthe R phase = 7, 54%, S = 7,74%, and T = 7, 37% obtained an efficiency value of 96, 31%.
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Rinas, I. Wayan, A. A. Gede Maharta Pemayun, and I. Made Suartika. "ANALISIS PENGARUH PENGATURAN DAYA REAKTIF UNTUK FILTER HARMONIC TERHADAP PERUBAHAN THDi PADA SISTEM TENAGA LISTRIK." Jurnal SPEKTRUM 7, no. 4 (December 6, 2020): 181. http://dx.doi.org/10.24843/spektrum.2020.v07.i04.p23.
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Harmonic filters are used to reduce harmonic distortion in electric power systems. Inactive filters, usually the required reactive power (Qc) can be adjusted. In this study, an analysisof the Qc setting on the Active filter was carried out to determine the effectiveness of the filter sothat the THDi (total harmonic distortion) was obtained which was in accordance with the IEEE519-2014 standard (8%). The results of the analysis of the smallest Qc which can still reduceharmonic distortion when meeting the IEEE 519-2014 standard is Qc 55% of the maximumreactive power with THDi for pasa R = 7.38%; S = 7.81%; and T = 5.94%. Control is needed toadjust the Qc on the filter, because the Qc value will continue to change according to theelectric load being operated.
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Li, Xiang Zhen, Guang Ming Hu, Peng Xin Hou, Yu Bo Fan, and Chun Lin Guo. "Analysis on Harmonics Caused by Connecting Electric Vehicle Chargers with Power Network." Advanced Materials Research 724-725 (August 2013): 1393–97. http://dx.doi.org/10.4028/www.scientific.net/amr.724-725.1393.
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As a class of nonlinear loads in the power system, electric vehicle chargers will produce a certain harmonic pollution for the grid. Before the construction of charging stations, it is necessary for electric vehicle charger (station) connected to the grid to simulate and predict harmonics. The models of single charger and charge station are built separately in order to simulate and analysis the impact of a single and multiple chargers on power quality. The factors of the harmonic current ratio (HRI) and the current total harmonic distortion (THDI) varied with the charging power and the number of the chargers are discussed and analyzed. The generation mechanism of harmonic counteraction and interaction between the chargers are analyzed. The simulation results show that: because of the impedance of the system and the transformer, the harmonic current ratio (HRI) and the current total harmonic distortion (THDI) both increase firstly to some extent and subsequently decrease gently with the increase of the number of the chargers in the same power charging. This phenomenon has nothing to do with the harmonic counteraction and how that happen is discussed and analysis in this paper. And the phenomenon of harmonics interaction and counteraction occurs with the increase of the number of the chargers in different power charging, and the current total harmonic distortion (THDI) declines and tends to maintain a relatively stable value.
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Suartika, I. Made, and I. Wayan Rinas. "ANALISA PENGARUH PENGGUNAAN CONTROLLER PADA FILTER AKTIF SHUNT TERHADAP PEREDAMAN DISTORSI HARMONISA." Jurnal SPEKTRUM 7, no. 4 (December 6, 2020): 139. http://dx.doi.org/10.24843/spektrum.2020.v07.i04.p18.
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The types of filters used to reduce harmonic distortion are passive filters, active filtersand hybrid filters. The type of filter that usually uses the system controller is an active filter. Inthis study, an analysis of current harmonic distortion from the simulation results using matlabhaccording to the IEEE Std 519-1992 standard in existing conditions, active filter operatingconditions, active filter operation using PID controllers and active filters based on Fuzzy LogicController. The simulation results of the three models used show that the resulting THDii stillmeets the IEEE Std 519-1992 standard, namely the THDi is still 8%, the simulation results forPID-based active filters are: pasa R = 2.89%; S = 2.34%; T = 3.23% and based on fuzzy logiccontrollers are: R = 0.15%; S = 0.11%; T = 0.13%.
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Islami, Jamhir. "Analisis Pengaruh Peralatan Laboratorium Terhadap Kualitas Daya Pada Laboratorium Elektroteknika Dasar." ELKHA 9, no. 1 (February 20, 2017): 23. http://dx.doi.org/10.26418/elkha.v9i1.21422.
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Abstract– Meningkatnya penggunaan beban non-linier pada pada laboratorium dapat menyebabkan munculnya harmonisa yang dapat mengganggu sistem distribusi energi listrik. Dengan melakukan pengukuran secara langsung menggunakan Fluke 43B Power Quality Analyzer pada beberapa peralatan laboratorium, maka dapat diketahui bahwa harmonisa dapat memperburuk kualitas daya yang dapat meningkatkan rugi-rugi pada sistem distribusi energi listrik, sehingga terjadinya pemborosan energi. Dalam penelitian ini pengukuran dilakukan pada beberapa jenis peralatan laboratorium seperti osiloskop, komputer, catu daya DC, dan sebagainya. Setelah diteliti, maka beban lampu hemat energi (LHE) dan komputer (PC) merupakan beban listrik dengan kandungan harmonisa tertinggi yaitu sebesar 81,1 % dan 72,2 %. Dengan memperkecil nilai kandungan arus harmonisa yang disebabkan oleh beban non-linier maka akan menyebabkan nilai THDi menjadi lebih kecil sehingga rugi-rugi pemakaian energi listrik dapat dihindari. Keywords- harmonisa, THDi, rugi-rugi
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Uyaisom, C., K. Nuntasud, and P. Kerdlap. "Comparison of Monitor Types in Personal Computer Set on Electrical Energy Saving and Side Effect on Power Quality." Applied Mechanics and Materials 313-314 (March 2013): 891–95. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.891.
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This paper presets comparisons of type of monitor in personal computer set on electrical energy saving and side effect on power quality. The 3 types of monitor in personal computer consists of cathode ray tube : CRT type inch, liquid crystal display : LCD type, and light emitting diode : LED type and side of each monitor is 19 inch. The experimental results as shown the power consumption and side effect on power quality such as power factor and %THDi each monitor types. The experiment results shown the best effectiveness is LED monitor type, it can be saving of energy up to 75.69 % of CRT monitor type and 45.30 % of PC. Set with CRT monitor type. However, the LED monitor type are generated of %THDi very high level and low level of power factor.
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SATIVA, ORYZA, ASEP ANDANG, and ABDUL CHOBIR. "Pemodelan Active Front End Converter (AFE) Tiga-Fasa Tiga-Kaki menggunakan Kendali Model Predictive Control (MPC)." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 11, no. 1 (January 24, 2023): 241. http://dx.doi.org/10.26760/elkomika.v11i1.241.
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ABSTRAKPenelitian ini membahas Active Front End Converter (AFE) tiga-fasa tiga-kaki menggunakan kendali Model Predictive Control (MPC) pada pensakelaran converter yang dapat mengurangi nilai harmonisa dan memperbaiki faktor daya pada jaringan. Kendali MPC digunakan untuk melakukan prediksi tegangan dan arus AFE dengan cara memasukkan vektor tegangan yang dihasilkan oleh sakelar konverter ke dalam model state-space diskrit dan dievaluasi menggunakan cost function. Simulasi model dilakukan pada beberapa kondisi, yaitu simulasi beban resistif, beban induktif, beban kapasitif, beban nonlinear, dan variable frequency drive (VFD) dengan motor induksi. Simulasi beban resistif, THDv dan THDi secara berurutan nilai rata-ratanya sebesar 0.02% dan 0.45%, beban induktif, 0.01% dan 1.92%, beban kapasitif, 0.01% dan 1.92%, beban nonlinear, 0.03% dan 1.23%, dan beban VFD dengan motor induksi sebesar 0.04% dan 1.18%. Faktor daya pada simulasi beban bervariasi menghasilkan unity. Dari hasil simulasi didapatkan kesimpulan kendali MPC pada AFE mampu meningkatkan kualitas daya listrik.Kata kunci: Harmonisa, Faktor Daya, AFE, MPC, Model Vektor Ruang ABSTRACTThis study discusses a three-phase three-leg Active Front End Converter (AFE) using Model Predictive Control (MPC) which controls converter switching to reduce harmonic values and improve the power factor on the network. MPC is used to predict the AFE voltage and current by entering the voltage vector generated by the converter switch into a discrete state-space model and evaluated using a cost function. The simulations of the model have been done under several conditions, resistive loads, inductive loads, capacitive loads, nonlinear loads, and variable frequency drive (VFD) with an induction motor. Resistive load simulations, THDv and THDi respectively, the average values are 0.02% and 0.45%, inductive load, 0.01% and 1.92%, capacitive load, 0.01% and 1.92%, nonlinear load, 0.03% and 1.23%, and load VFD with induction motor is 0.04% and 1.18%. The power factor in the varying load simulation results is unity. From the simulation results, it can be concluded that MPC control on AFE can improve electrical power quality. Keywords: Harmonics, Power Factor, AFE, MPC, Space Vector Model
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Al-Saadi, Mohammed, Sharmistha Bhattacharyya, Pierre Van Tichelen, Manuel Mathes, Johannes Käsgen, Joeri Van Mierlo, and Maitane Berecibar. "Impact on the Power Grid Caused via Ultra-Fast Charging Technologies of the Electric Buses Fleet." Energies 15, no. 4 (February 15, 2022): 1424. http://dx.doi.org/10.3390/en15041424.
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Battery Electric Buses (BEBs) are considerably integrated into cities worldwide. These buses have a strict schedule; thus, they could be charged in a very short time with a power level up to 600 kW. The high-power systems and short charging times imply special grid operation conditions that should be taken into account. Therefore, it is necessary to consider the influence of their charging infrastructure on the distribution system operation, especially near the charging point. This work presents two Use Cases (UCs) from two demos (Germany and the Netherlands) to investigate the impact of the slow and fast-chargers’ integrations on the power grid and environment. Fast-chargers up to 350 kW based on pantograph technology and slow-chargers up to 50 kW based on Combined Charging System Type 2 (CCS2) are used on the BEB line route and in the depot, respectively. The charging of BEBs with these solutions is studied here to investigate their impact on the grid in terms of power quality. It was found that the voltage variations due to fast-chargers terminal remain much below the EN50160 standard limit values i.e., ±10%. The obtained maximum Total Harmonic Voltage Distortion (THDv) value is 2.7%, with an average value of 1.3%, which is below the limit value of 8%, as per the standard EN 50160. Similarly, the individual harmonic currents were measured. The maximum value of total harmonic current distortion (THDI) is around 25%, with an average value of 3% only. As the average value of THDI is quite low, the harmonic current pollution is not a big concern for the installation at this time.
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Lucia, Umberto, and Giulia Grisolia. "The Gouy-Stodola Theorem—From Irreversibility to Sustainability—The Thermodynamic Human Development Index." Sustainability 13, no. 7 (April 2, 2021): 3995. http://dx.doi.org/10.3390/su13073995.
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Today, very complex economic relationships exist between finance, technology, social needs, and so forth, which represent the requirement of sustainability. Sustainable consumption of resources, production and energy policies are the keys for a sustainable development. Moreover, a growing request in bio-based industrial raw materials requires a reorganization of the chains of the energy and industrial sectors. This is based on new technological choices, with the need of sustainable measurements of their impacts on the environment, society and economy. In this way, social and economic requirements must be taken into account by the decision-makers. So, sustainable policies require new indicators. These indicators must link economics, technologies and social well-being, together. In this paper, an irreversible thermodynamic approach is developed in order to improve the Human Development Index, HDI, with the Thermodynamic Human Development Index, THDI, an indicator based on the thermodynamic optimisation approach, and linked to socio-economic and ecological evaluations. To do so, the entropy production rate is introduced into the HDI, in relation to the CO2 emission flows due to the anthropic activities. In this way, the HDI modified, named Thermodynamic Human Development Index THDI, results as an indicator that considers both the socio-economic needs, equity and the environmental conditions. Examples of the use of the indicator are presented. In particular, it is possible to highlight that, if environmental actions are introduced in order to reduce the CO2 emission, HDI remains constant, while THDI changes its value, pointing out its usefulness for decision makers to evaluate a priori the effectiveness of their decisions.
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Kondratieva, Nadezhda P. "Dependence of Current Harmonics of Greenhouse Irradiators on Supply Voltage." Volume 28, Number 2, 2020, no. 02-2020 (April 2020): 85–88. http://dx.doi.org/10.33383/2019-024.
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The article describes the results of the study concerning the effect of the voltage level on current harmonic composition in greenhouses irradiators. It is found that its change affects the level of current harmonics of all types of the studied greenhouse irradiators. With decrease of nominal supply voltage by 10 %, the total harmonic distortion THDi decreases by 9 % for emitters equipped with high pressure sodium lamps (HPSL), by 10 % for emitters with electrode-less lamps and by 3 % for LED based emitters. With increase of nominal supply voltage by 10 %, THDi increases by 23 % for lighting devices equipped with HPSL, by 10 % for irradiators with electrode-less lamps and by 3 % for LED based emitters. Therefore, changes of supply voltage cause the least effect on the level of current harmonics of LED based emitters and then the emitters with electrode-less lamps. Change of the level of supply voltage causes the greatest effect on the level of current harmonics of HPSL based irradiators. Mathematical models of dependence of THDi on the level of supply voltage for greenhouse emitters equipped with LED, electrode-less lamps and HPSL lamps were formulated. These mathematical models may be used for calculations of total current when selecting transformers and supply cable lines for greenhouse lighting devices, for design of new or reconstruction of existing irradiation systems of greenhouse facilities, and for calculation of power losses in power supply networks of greenhouse facilities during feasibility studies for energy saving and energy efficiency increasing projects.
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A. Subki, A. Shamsul Rahimi, Zahariah Manap, Mohd Zaidi Tumari, Aiman Zakwan Jidin, Shahrizal Saat, Amar Faiz Zainal Abidin, and Muhammad Salihin Saealal. "Analysis on three phase cascaded H-bridge multilevel inverter based on sinusoidal and third harmonic injected pulse width modulation via level shifted and phase shifted modulation technique." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 1 (March 1, 2021): 160. http://dx.doi.org/10.11591/ijpeds.v12.i1.pp160-169.
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This work proposes a comparative analysis of sinusoidal and third harmonic injected reference signal modulation accompany with level-shifted PWM technique named as phase disposition (LSPD), phase opposition disposition (LSPOD), and alternate phase opposition disposition (LSAPOD) and phase-shifted PWM technique. Switching pulses from both reference signal and PWM technique have been fed into three phase eleven level cascaded H-bridge multilevel inverter (CHBMLI) fed on a resistive-inductive load with the modulation depth (MD) set to varied from 80% to 100%. For voltage source inverter, total harmonic distortion (THD) content is critical and must be within the allowable range. To prove the feasibility of the reference signal with carrier signal schemes, the entire simulation of the modulation techniques is established and conducted via the Simulink environment. According to the analyzed result, the performance is acceptable in terms of %THDV and %THDI values. Simulation analysis also indicates, at full modulation depth, due to higher fundamental output voltage component produces via the THIPWM modulation technique compared to the SPWM technique, this causes higher %THDV value.
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Obando, José Abel, and Victoria Serrano. "Implementation of a Hybrid ANN-Based Filter for the Reduction of Harmonic Currents." European Journal of Electrical Engineering 23, no. 3 (June 21, 2021): 265–72. http://dx.doi.org/10.18280/ejee.230311.
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Harmonic distortions caused by non-linear loads (NLLs) affect the behavior of electrical systems, creating harmonics in the fundamental signal. As a result, this deteriorates the power quality. Therefore, this work proposes the implementation of a hybrid filter based on an artificial neural network (ANN) control system, focused on subharmonic, interharmonic and odd harmonic distortions generated by a three-pulse cycloconverter. In addition, a passive double tuned filter was implemented to damp even and odd harmonics. As a result, the simulation performed in MATLAB/SIMULINK showed that the responses produced by the ANN are approximate to the distortions present in the electrical system. Consequently, the levels of total voltage distortions (THDV) and total current distortions (THDI) are reduced. Therefore, the ANN control system improves the quality in the electrical network because the current and voltage harmonics comply with the electrical standards.
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Widiarsana, I. Gusti Made, I. Wayan Rinas, and I. Wayan Arta Wijaya. "PENGGUNAAN PROPORTIONAL INTEGRAL DERIVATIVE ( PID ) CONTROLLER PADA FILTER AKTIF UNTUK MEREDAM HARMONISA AKIBAT BEBAN NON LINIER DI BALI NATIONAL GOLF RESORT." Jurnal SPEKTRUM 4, no. 2 (January 8, 2018): 138. http://dx.doi.org/10.24843/spektrum.2017.v04.i02.p18.
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Bali National Golf Resort has a high level of non-linear load usage. A harmonic is emerged due to a high level of non-linear load usage which was the main problem on the quality of electric power. On the other hand, it is also lead to an adverse impact for the electric power system such as the wave form and voltage were not sinusoidal. Then, in order to reduce it, an active filter could be used as one of the best way. This research focused on the simulation of PID (Proportional Integral Derivate) Controller towards an active filter to reduce the harmonic and MATLAB R2013 software that applicated as the instrument. As the result,the usage of PID Controller on the active filter could reduce the THDi into 1.89% and THDv into 0.59 % as an average percentage at Bali National Golf Resort.
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Nisja, Indra, M. H. Idris, M. Syafrudin, S. Hardi, and M. Isa. "The Effect of Harmonic Distortion on the Performance of Differential Relay for Distribution Transformer Protection." Applied Mechanics and Materials 793 (September 2015): 182–86. http://dx.doi.org/10.4028/www.scientific.net/amm.793.182.
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This paper aims to analyzing and probing the influences of power system harmonics on a differential relay used for distribution transformer protection. The increased use of nonlinear devices in industry, commercial and residential areas can lead to a significant increase the level of harmonic distortion in the power system. This harmonic has the significant effects to the differential protection systems components such as current transformer (CT) and relay. The CT tends to saturate due to the presence of current harmonics in power system, so it will produce magnitude secondary current error and make the differential relay to miss operations. The harmonic distortion effects on the differential protection have been investigated through laboratory test. To determine the CT errors when operates under harmonic condition, the CT has been test with certain level of THDi. The result of this testing was found that with increasing of the THDi, the magnitude of secondary current error increased and differential relay will operate at no fault conditions.
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Hutabarat, Marshal Andrea, Syafruddin Hasan, Ali Hanafiah Rambe, and Suherman Suherman. "Design and simulation hybrid filter for 17 level multilevel inverter." Bulletin of Electrical Engineering and Informatics 9, no. 3 (June 1, 2020): 886–97. http://dx.doi.org/10.11591/eei.v9i3.890.
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The increasing of renewable energy applications such as solar cells, wind power, ocean thermal and HVDC (high voltage direct current) cause increment in the use of the inverter circuit. Harmonics that are generated by the inverter have negative impacts on the electrical equipment; harmonics cause excessive heat and may shorten the life of electrical equipment. A multilevel inverter is an arranged of cascaded inverters which aims to reduce total harmonic distortion (THD). This paper proposes the design of 17 levels of a single-phase cascaded multilevel inverter with a hybrid filter insertion. By using PSIM simulator, the hybrid filter is proven reducing THD better than single pulse width modulation (SPWM) inverter. Installation of the hybrid filter is able to fix a maximum of 0.23% THDv and a maximum of 1.05% THDi. Hybrid filter installation reduces the value of THD to comply with IEEE 519-2014 standard.
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Badea, Nicolae, Ion Voncilă, and Laurenţiu Codreanu. "Modellation and simulation of shunt active power filters type for variable nonlinear load." Annals of “Dunarea de Jos“ University of Galati. Fascicle III, Electrotechnics, Electronics, Automatic Control, Informatics 44, no. 1 (February 22, 2022): 10–16. http://dx.doi.org/10.35219/eeaci.2021.1.02.
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The paper is dealing with modelling and simulation of running principle of shunt type active power filter. It is possible to highlight the running of the active filter as a result of correlation of power supply voltage, the power outage on filter coil and converter input voltage. The mathematical equations for filter running were implemented into the PSIM software, both with instantaneous variables without DC voltage control and Vdc voltage control in the (dq) coordinate system. The numerical simulations performed without DC voltage control have shown a Vdc voltage overgrown. Vdc voltage control is taking off this inconvenience and allows harmonics balance putting in a filter current in phase opposition with the harmonic current of nonlinear load. By numerical simulation of varable voltage power supply of the nonlinear customer it was highlighted existence of an optimal area of THDi thanks to correlation between grid voltage, coil and converter input voltage. Choosing and dimensioning of three phase coil of power circuit of SAPF has a decisive influence on the voltage range of adjustment of nonlinear customer and implicit on THDi grid current.