Artykuły w czasopismach: „IEEE-519 STANDARD”

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WANG, Zijiang, Qionglin LI, Yuzheng TANG, Shuming LIU i Shuangyin DAI. "Comparison of harmonic limits and evaluation of the international standards". MATEC Web of Conferences 277 (2019): 03009. http://dx.doi.org/10.1051/matecconf/201927703009.

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The paper takes the Chinese standard GB/T 14549-1993, the British Engineering Recommendation G5/4-1, the Institute of Electrical and Electronics Engineers IEEE Std 519-2014 and the part of IEC 61000-3 series standard as an example. Then summarize the difference of harmonic limits, the different processing methods of harmonic impedance, and the different summation law of each standard. Compare the harmonic limit calculation and evaluation methods of Chinese GB/T 14549-1993, British G5/4-1 and IEEE Std 519-2014 standard in detail, summarize the characteristics of the three standards in disturbance emission evaluation and introduce examples to verify the conclusion. Finally, summarize the characteristics and differences of mentioned harmonic standards.

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Budi Aryawan, I. Putu, Antonius Ibi Weking i I. Wayan Rinas. "ANALISIS PEMASANGAN FILTER PASIF DAN AKTIF TERHADAP KANDUNGAN HARMONISA DAN RUGI-RUGI DAYA GARDU DISTRIBUSI KA 2085 DI PT. PLN (Persero) DISTRIBUSI BALI RAYON MENGWI". Jurnal SPEKTRUM 5, nr 1 (25.06.2018): 41. http://dx.doi.org/10.24843/spektrum.2018.v05.i01.p06.

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Operation of nonlinear loads can cause harmonic distortion in the voltage and current waveforms that result in abnormal electrical system condition. Content THD (Total Harmonics Distortion) an excess flow can cause power quality systems become worse, thus causing the system power factor is lower. Active filter and Passive filter which aims to reduce harmonics that arise. Analysis THD simulation and measurement results in accordance with IEEE 519-2014 and analysis designing of a passive filter and active filter is right to suppress harmonic distortion. The analysis shows that the installation of active filters causes the current and voltage THD contents to comply with the standard IEEE 519-2014 standards is ?12% and 5%. The use of passive and active filters can reduce THDi content to 8.45% and 3.07%, respectively. While for THDv decreased respectively to 3.68% and 3.45% which already meet the IEEE 519-2014 standards. Power losses decreased respectively to 4.36 kW and 3.86 kW. Installation of active filters is better for reducing THD (Total Harmonics Distortion) and power losses in KA 2085 transformers.

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Richard, Laurensius Richard Mulyadi, i 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, nr 1 (27.02.2023): 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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Alfronso Sinurat, Antonius Doddy Tyas Prasetyo, Eva Magdalena Silalahi, Bambang Widodo i Robinson Purba. "RANCANG BANGUN FILTER PASIF UNTUK MEREDUKSI TOTAL HARMONIC DISTORTION (THD) AKIBAT PEMAKAIAN LAMPU HEMAT ENERGI (LHE) DAN LIGHT EMITTING DIODE (LED)". Lektrokom : Jurnal Ilmiah Teknik Elektro 4, nr 1 (27.08.2021): 7. http://dx.doi.org/10.33541/lektrokom.v4i1.3318.

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This paper discusses the design of a passive filter system for energy saving in Energy Saving Lamps (LHE) and Light Emitting Diode (LED), but for LHE and LED lamps for current Total Harmonic Distortion (THDi) that do not meet the standard. To reduce the current THD, it can be done by installing a single tune passive filter.””In this paper, we discuss the design of” a”passive filter system using a filter design with Matlab Simulink to determine the size of the components in filter design. To reduce the level of current harmonics, a single tune passive filter is designed which consists of an inductor and capacitor (LC) on the LHE and the LED.”Based on the research”data”that has been carried out,”the THDi measurement results for the lamp load test after using the filter are 49.12% for the LED circuit, 41.86% for the LHE circuit and 11.59% for the combined LED and LHE circuit.”Based on the results”of”each”measurement,”it can be seen that none have met the IEEE 519- 2014 standards. In this study, only using a filter tuned to the 3rd order, and based on the simulation results, it meets the IEEE 519-2014 standard, which is 1.11%.”The results of the design and testing of”tools (filters) show that they do not meet the IEEE 519-2014 standards, namely 11.59%.

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Satriya Dhinata, IK, AAG Maharta Pemayun i IB Gede Manuaba. "PENGARUH FILTER AKTIF DENGAN PENGATURAN DAYA REAKTIF TERHADAP EFISIENSI TRAFO BERBASIS SIMULINK". Jurnal SPEKTRUM 8, nr 4 (8.01.2022): 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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Suartika, I. Made, i I. Wayan Rinas. "ANALISA PENGARUH PENGGUNAAN CONTROLLER PADA FILTER AKTIF SHUNT TERHADAP PEREDAMAN DISTORSI HARMONISA". Jurnal SPEKTRUM 7, nr 4 (6.12.2020): 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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Elfando, D., E. M. Silalahi, S. Stepanus, B. Widodo i R. Purba. "Reducing of total harmonic distortion using passive filter simulation to suppress harmonic currents with the case: General Hospital, Universitas Kristen Indonesia Jakarta". IOP Conference Series: Earth and Environmental Science 878, nr 1 (1.10.2021): 012061. http://dx.doi.org/10.1088/1755-1315/878/1/012061.

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Abstract With the increasing need for and use of electrical energy amid increasingly rapid technological advances, especially in the use of electronic equipment in hospitals, it is necessary to pay attention to the problem of harmonics due to the use of non-linear electrical equipment. Therefore, it is necessary to measure the current and voltage THD for each non-linear equipment user. If the current and voltage THD values do not meet the standards, then a filter design is carried out so that the THD values meet the standards. Based on the results of THD measurements on the Main Distribution Panel (MDP) of RSU UKI, it was found that the THD of the voltage varied between 0.7877% - 2.4363% and the current THD varied between 5.3073% - 9.2363%. The measured THD value refers to the IEEE 519-2014 standard. If the THD value of the measurement results exceeds the IEEE 519-2014 standard, a harmonic filter is needed. With the simulated single tuned filter design, the current THD decreases within the standard value. The THD value of the current after installing the filter at the three MDP’s of the RSU UKI, namely MDP A of 1.72%, MDP B of 0.64% and MDP C of 1.30%.

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Prasetyo, A. D. T., E. M. Silalahi, S. Stepanus, B. Widodo i R. Purba. "Reducing of total harmonic distortion by simulating passive filters to suppress harmonic currents with the case: Faculty of Engineering Building, Universitas Kristen Indonesia Jakarta". IOP Conference Series: Earth and Environmental Science 878, nr 1 (1.10.2021): 012060. http://dx.doi.org/10.1088/1755-1315/878/1/012060.

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Abstract Today’s electrical appliances use power electronics to save electricity. However, this equipment generates non-sinusoidal current, causing wave defect, expressed as total harmonic distortion (THD). As the %THD increases, the greater risk of equipment damage. For this reason, the research was carried out in the Faculty of Engineering Building, Universitas Kristen Indonesia Jakarta (FT UKI Jakarta) where there are many load combinations such as computers, various types of lights, laboratory equipment such as transformers, electric motors and so on. The research was conducted using quantitative method. Data collection is carried out directly in the main panel. Based on the measurement results, the calculation of the maximum load current (IL) and short circuit (ISC) is carried out. Through these values, it can be seen that whether the odd dominant harmonic values and orders meets the IEEE 519-2014 standards or not. Calculations and analysis of the measurement results have shown that the %THDI in the FT UKI building has not meet the standard. Therefore, it is necessary to simulate the filter design to reduce the %THDI, so that the results can meets the IEEE 519-2014 standard, which is below 5%.

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Herman Gautama, Auryn, Antonius Ibi Weking i I. Wayan Rinas. "PERBANDINGAN ALOKASI PENEMPATAN FILTER AKTIF DAN FILTER PASIF UNTUK MENDAPATKAN DISTORSI DAYA TERKECIL PADA JARINGAN DISTRIBUSI DI BLUE POINT BAY". Jurnal SPEKTRUM 7, nr 2 (4.06.2020): 36. http://dx.doi.org/10.24843/spektrum.2020.v07.i02.p6.

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Harmonic filter is a power electronics technology to produce specific current components that canbe used to reduce harmonic currents generated by non-linear loads. Non-linear load is usually foundon electronic equipment in which there are semi-conductor components, such as the use of airconditioners, TVs, computers, medical equipment, musical instruments and so forth. Based onpreliminary measurements at Blue Point Bay Villa & Spa, the simulation results of the THD (TotalHarmonic Distortion) current value of 25.17%, which means exceeding the IEEE 159-2014 standardvalue of ? 15.0%. Filters that are placed incorrectly can cause THD harmonics to be suboptimal. Fromthe results of the study it was found that the THDv value at Blue Point Bay Villa & Spa was 4.83%where these conditions met the maximum THDv IEEE 519-2014 standard for voltages ? 69 kV. THDivalue at Blue Point Bay Villa & Spa after the use of active and passive filters is ? 15% and accordingto IEEE Standard 519-2014. The best placement of active filters to reduce power distortion is SDP 2.2because it can reduce power distortion from 20.08% to 3.94%, and the best passive filter placement isMDP 2, because it can reduce power distortion from 20.13 % to 8.52%.

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Arseneau, R., G. T. Heydt i M. J. Kempker. "Application of IEEE Standard 519-1992 Harmonic Limits for Revenue Billing Meters". IEEE Power Engineering Review 17, nr 1 (styczeń 1997): 57. http://dx.doi.org/10.1109/mper.1997.560700.

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Arseneau, R., G. T. Heydt i M. J. Kempker. "Application of IEEE standard 519-1992 harmonic limits for revenue billing meters". IEEE Transactions on Power Delivery 12, nr 1 (1997): 346–53. http://dx.doi.org/10.1109/61.568258.

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Rachmat Sutjipto, Wijaya Kusuma i Kemal Zulfianta. "Analisis Pengaruh Harmonisa Terhadap Losses Transformator 500kVA". Elposys: Jurnal Sistem Kelistrikan 9, nr 2 (15.02.2023): 40–45. http://dx.doi.org/10.33795/elposys.v9i2.614.

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With the non-linear load at the State Polytechnic of Malang, it has an impact on the emergence of harmonics and the appearance of currents in the neutral wire, rising temperatures in conductors and losses in transformers.In this study, several THD analyzes were carried out in accordance with the IEEE 519-1992, including neutral current analysis, losses analysis before and after being affected by harmonics, derating analysis and alternative mitigation methods to reduce these harmonic levels. Based on observational data on 500kVA transformers at UPT PP Polinema, it is known that the highest THDi current is 14.5% and exceeds the IEEE 519-1992 standard (12%). As for the THD voltage, the harmonic is 1.87% and is below the standard (5%). Based on the analysis results, it is known that the value of losses from the neutral current is 0.096 kW. It is also known that the total loss is 1.24kW (the PCu loss is 1.2kW and the PFe loss is 0.04 kW. Based on the SPLN 50 standard in 1997, the total allowable losses are 6.6 kW and 7.84 kW after being affected by harmonics, so the total loss of the measurement results is below the standard. From the analysis, it is also known that the derating will occurs in due to harmonics is 71.6 kVA or 14.32% of the transformer capacity. So to reduce the amount of THD current a mitigation is needed in the form of installing a filter that is used to suppress harmonic currents to meet existing standards.

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Janardana, I. G. N., I. W. Arta Wijaya i 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, nr 1 (10.02.2018): 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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Abdollahi, Rohollah. "Induction motor drive based on direct torque controlled used multi-pulse AC-DC rectifier". International Journal of Applied Power Engineering (IJAPE) 10, nr 2 (1.06.2021): 89. http://dx.doi.org/10.11591/ijape.v10.i2.pp89-96.

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This paper presents the direct torque-controlled induction motor drives (DTCIMDs) based on a retrofit 44-pulse rectifier (44PR). A 22-phase polygon autotransformer (PA) is designed to supply the rectifiers. The above structure improves the power quality standards in the power grid and complies with the requirements of the IEEE-519 standard for different loads. Besides, a power factor close to one is obtained for a wide range of DTCIMD performance. The results show that the total harmonic distortion (THD) of the input current under variable loads for 44PR is less than 3%.

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Keskar, P. Y. "Specification of variable frequency drive systems to meet the new IEEE 519 standard". IEEE Transactions on Industry Applications 32, nr 2 (1996): 393–402. http://dx.doi.org/10.1109/28.491489.

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Duffey, C. K., i R. P. Stratford. "Update of harmonic standard IEEE-519: IEEE recommended practices and requirements for harmonic control in electric power systems". IEEE Transactions on Industry Applications 25, nr 6 (1989): 1025–34. http://dx.doi.org/10.1109/28.44238.

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Ariana, I. Gede, I. G. Dyana Arjana i I. Wayan Rinas. "ANALISIS PENGARUH HARMONISA TERHADAP RUGI -RUGI DAYA (LOSSES) PADA TRANSFORMATOR DI PENYULANG SEDAP MALAM". Majalah Ilmiah Teknologi Elektro 16, nr 1 (23.08.2016): 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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Marrero, Lester, Luis Garcia-Santander, Luis Hernandez-Callejo, Pedro Banuelos-Sanchez i Victor Jara Gonzalez. "Harmonic distortion characterization in groups of distribution networks applying the IEEE Standard 519-2014". IEEE Latin America Transactions 19, nr 4 (kwiecień 2021): 526–33. http://dx.doi.org/10.1109/tla.2021.9448534.

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Pavas, Andrés, Ana María Blanco i Estrella Parra. "Applying FBD-power theory to analysing effective lighting devices' impact on power quality and electric grid efficiency". Ingeniería e Investigación 31, nr 2SUP (1.06.2011): 110–17. http://dx.doi.org/10.15446/ing.investig.v31n2sup.25221.

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Currently the impact of high efficient lighting devices such as compact fluorescent lamps (CFL) and light emitting diodes (LED) is an important concern for the electrotechnical community. This paper makes a contribution towards determining the impact of these devices on electric grid power quality and efficiency, proposed by means of applying FBD-power theory to the currents absorbed by CFLs and LEDs. An analysis of the waveform distortion regarding IEEE standard 519 and efficiency detriment quantification are presented.

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Silalahi, Eva Magdalena, Bambang Widodo i 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, nr 1 (28.02.2021): 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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Arunkumar, U., G. Radhakrishnan, S. Boobalan i J. Kishore. "Power Factor Correction Using Sensorless Brushless DC Motor with Bridgeless Converter Topology". Journal of Computational and Theoretical Nanoscience 17, nr 4 (1.04.2020): 1796–803. http://dx.doi.org/10.1166/jctn.2020.8443.

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In this paper the regulation of brushless drives is attained by developing a new technique called hysteretic comparator with desirable standard of power at supply mains. By this methodology the composite difference of output due to noises or undulation are avoided and the phase delay is recompensed. Fuzzy logic improves the robustness with enhancement in the consistent performance of the system. The proposed regulator operates in intermittent conduction mode which helps the accomplishment of power factor nearer unity at supply ends. Moreover absence of DBR framework offer minimized switching losses. The proposed system is developed using MATLAB 2013 and with an experiment model. Thus the harmonics are minimized and the compatible limits of various international standards like IEC 61000-3-2 and IEEE-519 standards are attained.

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Rinas, I. Wayan, I. Made Suartika i Anak Agung Maharta Pemayun. "Analysis of the Increase of Transformer Power Losses due to the Operation of Unbalanced Nonlinier Loads". Journal of Electrical, Electronics and Informatics 2, nr 2 (31.08.2018): 38. http://dx.doi.org/10.24843/jeei.2018.v02.i02.p04.

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Non-linear loads are the source of harmonic current for electric utilities. The high level of harmonics greatly affects the increase of losses of electrical power (losses). The quality of electric power is determined by the parameters of power losses that occur in the transformer due to harmonic distortion. In this research will be analyzed THD from result of measurement and simulation in accordance with IEEE 519-2014 standard, power loss analysis on transformer before and after. Harmonics, the impact is increased due to unbalanced linear currents.

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Adi Wirajaya, I. Putu, I. Wayan Rinas i I. Wayan Sukerayasa. "Studi Analisa Pengaruh Total Harmonic Distortion (THD) terhadap Rugi-Rugi, Efisiensi, dan Kapasitas Kerja Transformator pada Penyulang Kerobokan". Jurnal SPEKTRUM 6, nr 2 (1.06.2019): 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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Yerbayev, Yerbol, Ivan Artyukhov, Artem Zemtsov, Denis Artyukhov, Svetlana Molot, Dinara Japarova i Viktor Zakharov. "Negative Impact Mitigation on the Power Supply System of a Fans Group with Frequency-Variable Drive". Energies 15, nr 23 (23.11.2022): 8858. http://dx.doi.org/10.3390/en15238858.

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The technological installations’ characteristics are possible to improve by equipping fans with a frequency-controlled electric drive. However, it can lead to an electromagnetic compatibility problem in the electrical supply system. This problem becomes worse if a large number of fans are included in the technological installation and the electric drives are powered from a substation connected to a limited power source. As an example, in this article we investigate the power supply system of a gas cooling unit with variable-frequency electric drives for fans. The electric drives’ operating mode dependences characterizing the non-sinusoidal voltages and currents of the power source are obtained with the help of simulation modeling in the MATLAB environment with the Simulink expansion package. The typical substation circuit usage for the power supply of a group of fans with a frequency-controlled drive does not meet the requirements of IEEE Standard 519-2014. We can solve the problem of electromagnetic compatibility by changing the substation topology and organizing DC busbars and replacing frequency converters with inverters. We proposed forming DC busbars using 12-pulse rectifiers powered by transformers with two secondary windings with different connection schemes. The simulation results confirmed that the proposed substation topology provides the voltage and current harmonics level on the substation power busbars in accordance with the IEEE Standard 519-2014 requirements over the entire frequency range of the fans’ motor control.

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Benyettou, Loutfi. "Comparative Study Entered New Approach FMV and Control SFR for Active Compensation of Harmonic Currents in Shunt Active Power Filter". IAES International Journal of Robotics and Automation (IJRA) 7, nr 2 (1.06.2018): 119. http://dx.doi.org/10.11591/ijra.v7i2.pp119-128.

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In this article, we discuss the problem of degradation of current in electrical installations, which follows directly from the proliferation of non-linear loads, to solve it, we used a two-level inverter as a parallel active filter, which injects current harmonics at the connection point with two compensation methods the method of instantaneous active and reactive power (pq method and pq method with MVF) method binds to the repository synchronization. We will highlight two control strategies by hysteresis and PWM. Simulation results using Blok set Power System (PBS)/ Simulink Matlab show reduced THD in accordance with standard IEEE-519.

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Rinas, I. Wayan, A. A. Gede Maharta Pemayun i I. Made Suartika. "ANALISIS PENGARUH PENGATURAN DAYA REAKTIF UNTUK FILTER HARMONIC TERHADAP PERUBAHAN THDi PADA SISTEM TENAGA LISTRIK". Jurnal SPEKTRUM 7, nr 4 (6.12.2020): 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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Demirdelen, T., R. I. Kayaalp i M. Tumay. "Modeling and Analysis of a Multilevel Parallel Hybrid Active Power Filter". Engineering, Technology & Applied Science Research 6, nr 3 (12.06.2016): 976–81. http://dx.doi.org/10.48084/etasr.665.

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This paper introduces a new control approach for the Multilevel Parallel Hybrid Active Power Filter (M-PHAPF) which can compensate harmonics and variable reactive power demand of loads by controlling the DC link voltage adaptively in medium voltage applications. By the means of this novel control method, M-PHAPF obtains a better and more efficient performance in the compensation of harmonics and reactive power compared to when using conventional control methods. The performance and stability of the proposed method are verified with a simulation model realized in PSCAD/EMTDC with different case studies. The simulation results demonstrate that harmonic compensation performance meets the requirements of the IEEE-519 standard.

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Marta Pratama, A. A. Gede, I. Wayan Rinas i Anak Agung Maharta Pemayun. "ANALISA PENGARUH PENGOPERASIAN FILTER AKTIF TERHADAP RUGI-RUGI DAYA DAN DERATING TRAFO PADA SISTEM KELISTRIKAN DI RS BIMC NUSA DUA". Jurnal SPEKTRUM 8, nr 3 (31.10.2021): 157. http://dx.doi.org/10.24843/spektrum.2021.v08.i03.p19.

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Nonlinear loads are harmonic current sources for utilities. High harmonic levels greatly increase the loss of electrical energy. The quality of electric power is determined by the parameters of power losses that appear in the electrical system of BIMC Nusa Dua Hospital due to harmonic distortion. In this study, THD analysis was carried out based on the results of measurements and simulations according to the IEEE 519-2014 standard, analysis of power loss due to THD current due to non-linear loads, and analysis of power loss after installation was carried out. Active filter, calculation of the working capacity of the transformer before and after installing an active filter.

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Ali, M. H., A. A. Sisa i A. B. Ahmed. "An optimal control technique for single-phase grid-connected inverter". Nigerian Journal of Technology 41, nr 3 (2.11.2022): 578–84. http://dx.doi.org/10.4314/njt.v41i3.18.

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This paper evaluates the performance of control technique based on Digital Pulse Width Modulation (DPWM) for single-phase grid-connected inverter application. Despite the importance of this synchronization technique, reports on its performance are scarce. The evaluation takes place in two simulation environments: ModelSim and MATLAB/Simulink. The performance of the technique expressed in Total Harmonic Distortion (THD) of Point of Common Coupling (PCC) current of the inverter is found to be 3.62%, a very good result on the standard of IEEE-519. This encouraging performance of this technique will result in injecting more renewable energy into the grid system, resulting in a more sustainable system.

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Sarri, R. H. "Discussion of "Update of harmonic standard IEEE-519: IEEE Recommended Practices and Requirements for Harmonic Control in Electric Power Systems" (and reply)". IEEE Transactions on Industry Applications 27, nr 2 (marzec 1991): 244. http://dx.doi.org/10.1109/28.73605.

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Agus Sudiatma Pratama, I. Nyoman, I. Wayan Rinas i 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, nr 2 (8.01.2018): 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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Nerubatskyi, Volodymyr, Oleksandr Plakhtii, Denys Hordiienko, Serhii Mykhalkiv i Vasyl Ravluyk. "A method for calculating the parameters of the sine filter of the frequency converter, taking into account the criterion of starting current limitation and pulse-width modulation frequency". Eastern-European Journal of Enterprise Technologies 1, nr 8 (109) (26.02.2021): 6–16. http://dx.doi.org/10.15587/1729-4061.2021.225327.

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An analysis of the method for ensuring the sinusoidality of the output voltage in power generation systems with self-commutated voltage inverters under the requirements of the international standard IEEE-519 is presented. In a number of programs, especially low-power generation systems, a low-cost solution is needed to provide the sinusoidal waveform of the output voltage with the total harmonic distortion of 5 %. This solution is to use two-level voltage inverters with an output sine LC filter. However, the feature of the sine filter with the frequency converter is that the PWM frequency affects the spectrum of higher harmonics of the output voltage. In addition, there is the starting current of the filter capacitor, which can disable the power switches of the voltage inverter. The developed method for calculating the values of the LC filter with the two-level voltage inverter in the PWM mode is presented meeting the requirements of the international standard IEEE-519, taking into account the modulation frequency and limitation of the starting current of the filter capacitor. To confirm the required quality of the output voltage of the two-level voltage inverter with the sine filter, an appropriate simulation model was created in the Matlab/Simulink computer simulation environment. The oscillograms and harmonic analysis of the input and output voltages of the sine filter, which showed the total harmonic distortion of 1.88 %, are presented. A physical prototype of the investigated system was created on the basis of a 5.5 kW OVEN PChV203-5K5-V frequency converter (Ukraine). Using the SIGLENT SDS1104X-E oscilloscope (China), the real waveform and the results of the harmonic analysis of the sine filter output voltage, confirming the implementation of the necessary sinusoidality criteria, were obtained

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Osman, Dygku Aniqnatasa Awg, Rahimi Baharom, Dalina Johari, Muhamad Nabil Hidayat i Khairul Safuan Muhammad. "Development of active power filter using rectifier boost technique". International Journal of Power Electronics and Drive Systems (IJPEDS) 10, nr 3 (1.09.2019): 1446. http://dx.doi.org/10.11591/ijpeds.v10.i3.pp1446-1453.

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<span>The development of active power filter (APF) using rectifier boost technique has been identified to compensate for the pulsating nature of the distorted supply current waveform of non-linear load. In this work, investigation is carried out on the operation of rectifier without any filters function. This is then extended to operate the rectifier converter with an active power filter function. APF function is implemented by enabling the closed-loop control using standard proportional integral control to rectify the distorted supply current to become continuous, sinusoidal and in-phase with the supply voltage waveform. Consequently, the total harmonic distortion (THD) level was reduced to meet the acceptable limit defined in the standard of IEEE-519 1992. The selected simulation results obtained from MATLAB/Simulink are presented to justify the proposed filter structure.</span>

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Samadaei, Emad, Aidin Salehi, Mina Iranian i Edris Pouresmaeil. "Single DC Source Multilevel Inverter with Changeable Gains and Levels for Low-Power Loads". Electronics 9, nr 6 (4.06.2020): 937. http://dx.doi.org/10.3390/electronics9060937.

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Different types of multilevel converters have been used to convert DC voltage to AC voltage for different applications. It is, however, desirable for flexible AC output voltage to be created from a single DC source at lower cost. This paper presents a new type of single DC source multilevel inverter which has the ability to create a different number of levels with low rate components. This device is also able boost the magnitude of the output voltage by means of a variable gain with one DC source. The advantages of the multilevel inverter are rapid stepping among levels, and its ability to produce different ranges of levels (seven, nine and eleven) and gains (two, four and eight). The proposed multilevel inverter includes six semiconductor switches, eight diodes, two capacitors and two inductors, making it suitable for low-power applications. A simulation in MATLAB and experimental tests on a prototype setup showed good performance for different modulations, with THD% down to 2.29%, which are meets the IEEE standard (IEEE 519).

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Ronilaya, Ferdian. "Penilaian Kualitas Daya Sistem Kelistrikan PT. Sai-Pasuruan". Jurnal Teknik Industri 8, nr 2 (20.08.2008): 179–87. http://dx.doi.org/10.22219/jtiumm.vol8.no2.179-187.

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The reliability services and power quality of power system nowadays become popular in industry because of cost energy reason, not exception for PT SAI. This company utilize control unit process to produce aluminum foil. The purpose of this research is identifying and analyzing the power quality of PT SAI and then to find the correct and economical solution to extinguish the source of bad power quality. After we identified, we conclude that 65% of load are AC motors, 25% of DC motors, 8% of heater and 2% of lightning. For over voltage and under voltage, refers to IEEE 519 – 1995 standard, PT SAI have 99% of nominal voltage. But for voltage imbalanced, refers to NEMA MG-1-1993 standard, PT SAI have 1,22%. For THD of voltage, PT SAI have 1,98%. But for THD of current, PT SAI have 34,47%. While transformer loading between 0,47% - 29,7%.

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Panigrahi, Swetapadma, i Amarnath Thakur. "Modeling and simulation of three phases cascaded H-bridge grid-tied PV inverter". Bulletin of Electrical Engineering and Informatics 8, nr 1 (1.03.2019): 1–9. http://dx.doi.org/10.11591/eei.v8i1.1225.

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In this paper a control scheme for three phase seven level cascaded H-bridge inverter for grid tied PV system is presented. As power generation from PV depends on varing environmental conditions, for extractraction of maximum power from PV array, fuzzy MPPT controller is incorporated with each PV array. It gives fast and accurate response. To maintain the grid current sinusoidal under varying conditions, a digital PI controller scheme is adopted. A MATLAB/Simulink model is developed for this purpose and results are presented. At last THD analysis is carried out in order to validate the performance of the overall system. As discussed, with this control strategy the balanced grid current is obtained keeping THD values with in the specified range of IEEE-519 standard.

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Tounsi, Mahmoud Mostefa, Ahmed Allali, Houari Merabet Boulouiha i Mouloud Denaï. "ANFIS control of a shunt active filter based with a five-level NPC inverter to improve power quality". International Journal of Electrical and Computer Engineering (IJECE) 11, nr 3 (1.06.2021): 1886. http://dx.doi.org/10.11591/ijece.v11i3.pp1886-1893.

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This paper addresses the problem of power quality, and the degradation of the current waveform in the distribution network which results directly from the proliferation of the nonlinear loads. We propose to use a five-level neutral point clamped (NPC) inverter topology for the implementation of the shunt active filter (SAPF). The aim of the SAPF is to inject harmonic currents in phase opposition at the connection point. The identification of harmonics is based on the pq method. A neuro-fuzzy controller based on ANFIS (adaptive neuro fuzzy inference system) is designed for the SAPF. The simulation study is carried out using MATLAB/Simulink and the results show a significant improvement in the quality of energy and a reduction in total harmonic distortion (THD) in accordance with IEC standard, IEEE-519, IEC 61000, EN 50160.

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Omran, Mohamed Asghaiyer, Izzeldin I. Ibrahim, Abu Zaharin Ahmad, Mohamed Salem, Mohamad Milood Almelian, Awang Jusoh i Tole Sutikno. "Comparisons of PI and ANN controllers for shunt HPF based on STF-PQ Algorithm under distorted grid voltage". International Journal of Power Electronics and Drive Systems (IJPEDS) 10, nr 3 (1.09.2019): 1339. http://dx.doi.org/10.11591/ijpeds.v10.i3.pp1339-1346.

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<span>This paper proposes a shunt hybrid power filter (HPF) for harmonic currents and reactive power compensation under a distorted voltage and in a polluted environment. For this purpose, the reference current of the shunt HPF is computed based on the instantaneous reactive power (p-q) theory with self-tuning filter (STF). In order to adjust the dc voltage as a reference value, PI and ANN controllers have been utilized. Moreover, the system has been implemented and simulated in a MATLAB-SIMULINK platform, and selected results are presented. Therefore, the results verified the good dynamic performance, transient stability and strong robustness of the ANN controller. Furthermore, the shunt HAPF with ANN controller has been found to be in agreement with the IEEE 519-1992 standard recommendations on harmonic levels.</span>

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Haryanto, Mulya, Eva Magdalena Silalahi, Bambang Widodo, Robinson Purba i Judo Ignatius Nempung. "TINJAUAN FLUKS CAHAYA, SUHU WARNA, TOTAL HARMONIC DISTORTION, FAKTOR DAYA LAMPU PIJAR, LAMPU HEMAT ENERGI DAN LIGHT EMITTING DIODE". Lektrokom : Jurnal Ilmiah Teknik Elektro 3, nr 1 (28.08.2020): 9. http://dx.doi.org/10.33541/lektrokom.v3i1.3349.

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Requirements of energy in nowadays are directly proportional with human activities which use a lot of energy, especially for electrical energy, therefore, it is necessary to take energy saving measures such as lighting that use electronic devices with energy efficient. The latest lighting technology is used saving energy lamp (LHE) and light emitting diode (LED) which are designed to replace that use of incandescent lamps. The purpose of this research was to compare lamp based on light flux, colour temperature total harmonic distortion (THD) and power factor. The standard used for luminous lighting flux, the colour temperature standard of SNI 03-6575-2001 and THD using reference IEEE 519-2014.From the study has been done is obtained that level of lighting flux produced by LED type is bigger for twice than LHE type. The best colour temperature is LED with ratio value of 875oK/W. THD current for LHE and LED does not comply the standard, therefore THD current is smaller 4% - 7,3% from LED. The power’s factor produced by LHE and LED is 0.5 to 0.6.

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Panpean, Chakrit, Kongpol Areerak, Phonsit Santiprapan, Kongpan Areerak i Seang Shen Yeoh. "Harmonic Mitigation in Electric Railway Systems Using Improved Model Predictive Control". Energies 14, nr 7 (5.04.2021): 2012. http://dx.doi.org/10.3390/en14072012.

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An electric multiple unit (EMU) high-speed train is the dynamic load that degrades the power quality in an electric railway system. Therefore, a power quality improvement system using an active power filter (APF) must be considered. Due to the oscillating load current in the dynamic load condition, a fast and accurate harmonic current-tracking performance is required. As such, this paper proposes the design of a model predictive control (MPC) since the minimization of cost function in the MPC process can suitably determine APF switching states. The design technique of MPC is based on the APF mathematical model. This controller was designed to compensate the time delay in the digital control. Moreover, the synchronous detection (SD) method applied the reference current calculations, as shown in this paper. To verify the proposed MPC, the overall control of APF was implemented on a eZdsp F28335 board by using the hardware-in-the-loop technique. The testing results indicated that the proposed MPC can provide a fast and accurate harmonic current-tracking response compared with the proportional-integral controller. In the load changing condition, the MPC was still effective in providing a good result after compensation. The percentage of total harmonic distortion, the percentage current unbalance factor, and the power factor would also be kept within the IEEE Standard 519 and IEEE Standard 1459.

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PRATOMO, LEONARDUS HERU, i HAPPY DIPTYA EKA CHRISTIAWAN. "Pengendalian Arus pada Inverter Lima Tingkat Penaik dan Penurun Tegangan". ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 11, nr 3 (25.07.2023): 783. http://dx.doi.org/10.26760/elkomika.v11i3.783.

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ABSTRAKPenggunaan inverter terkendali arus pada sistem integrasi dengan jala-jala memiliki beberapa kendala seperti nilai tegangan masukan inverter harus melebihi tegangan pada jala-jala, ditambah lagi terdapat gangguan harmonisa pada frekuensi pensaklaran inverter yang dapat menginterferensi jala-jala. Penggunaan inverter lima tingkat yang digabung dengan AC-AC boost diajukan pada makalah ini untuk mengeliminasi gangguan harmonisa dan mampu menghasilkan nilai tegangan yang lebih tinggi dari pada nilai tegangan masukan. Dengan begitu konverter yang diajukan mampu bekerja sebagai penaik dan penurun tegangan. Konverter yang diajukan menggunakan satu buah sumber DC dan menerapkan metode arus keluaran yang terkendali sebagai dasar dalam penyuntikan arus ke jala-jala untuk riset ke depan. Konverter yang diajukan mampu menghasilkan nilai Total Harmonic Distortion (THD) sebesar 2,6% dan memenuhi standar IEEE Std 519-2014 yaitu kurang dari 5%.Kata kunci: inverter lima tingkat , kendali arus, penaik dan penurun tegangan, THD, penyuntikan arus ke jala-jala ABSTRACTThe use of grid connected current-controlled inverters has several constraints such as the input voltage value of the inverter must exceed the voltage on the grid, plus there are harmonic disturbances at the inverter switching frequency which can interfere with the grid. The use of a five-level inverter combined with AC-AC boost is proposed in this article to eliminate harmonic disturbances and be able to produce a higher voltage value than the input voltage value. Thus the proposed converter is able to work as a buck and boost voltage. The proposed converter uses a single DC source and applies a controlled output current method as a basis for injecting current into the grid for future research. The proposed converter is capable of producing a Total Harmonic Distortion (THD) value of 2.6% and meets the IEEE Std 519-2014 standard, which is less than 5%.Keywords: five-level inverter, current controlled, buck-boost inverter, THD, current injection

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Eslami, Ahmadreza, Michael Negnevitsky, Evan Franklin i Sarah Lyden. "Harmonic Source Location and Characterization Based on Permissible Current Limits by Using Deep Learning and Image Processing". Energies 15, nr 24 (7.12.2022): 9278. http://dx.doi.org/10.3390/en15249278.

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Identification of harmonic sources contributing to harmonic distortion, and characterization of harmonic current injected by them, are crucial tasks in harmonic analysis of modern power systems. In this paper, these tasks are addressed based on the permissible current limits recommended by IEEE 519 Standard, with a determination of whether or not injected harmonics are within these limits. If limits are violated, the extent of the violations are characterized to provide information about harmonic current levels in the power system and facilitate remedial actions if necessary. A novel feature extraction method is proposed, whereby each set of harmonic measurements in a power system are transformed into a unique RGB image. Harmonic State Estimation (HSE) is discretized as a classification problem. Classifiers based on deep learning have been developed to subsequently locate and characterize harmonic sources. The approach has been demonstrated effectively both on the IEEE 14-bus system, and on a real transmission network where harmonics have been measured. A comparative study indicates that the proposed technique outperforms state-of-the-art techniques for HSE, including Bayesian Learning (BL), Singular Value Decomposition (SVD) and hybrid Genetic Algorithm Least Square (GALS) method in terms of accuracy and limited number of monitors.

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Hasanah, Aas Wasri, Tony Koerniawan i Yuliansyah Yuliansyah. "KAJIAN KUALITAS DAYA LISTRIK PLTS SISTEM OFF-GRID DI STT-PLN". Energi & Kelistrikan 10, nr 2 (28.01.2019): 93–101. http://dx.doi.org/10.33322/energi.v10i2.211.

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Inadequate power quality causes damage and may even cause damage to electrical equipment. Solar Power Plants Off-grid is a stand-alone power plant is not connected to the network. This system uses storage media such as batteries to maintain the availability of electricity at night or when the sun's intensity decreases. Solar power plant has a PV module that works based on the intensity of the captured sunlight and the inverter that can change the dc voltage into ac where as is known in the inverter there are non linear components which can result in poor quality of electrical power in this case the total harmonic distortion and voltage variations change. This may result in damage to electrical equipment. The electrical power quality of the STT-PLN off-grid PLTS will be analyzed and compared with the IEEE 519-1992 and SPLN 1: 1995 standards. Based on the results of the discussion that the THDi and THDv values are still above the established standard limit of 5%.

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Ridzwan, M. A. H., N. H. Baharudin, T. M. N. T. Mansur, K. Ananda-Rao i S. M. Suboh. "Performance of a Single-phase Grid-integrated Photovoltaic based DSTATCOM using Modified p-q Theory Control Algorithm." Journal of Physics: Conference Series 2312, nr 1 (1.08.2022): 012048. http://dx.doi.org/10.1088/1742-6596/2312/1/012048.

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Abstract This paper investigates the performance of a single-phase grid-integrated photovoltaic based DSTATCOM by using modified p-q theory control algorithm. Previously, p-q theory controller has been employed for a three-phase DSTATCOM system. Thus, this paper employs a modified p-q theory control algorithm for a single-phase grid-integrated solar PV (GCPV) based DSTATCOM. Thus, the GCPV system has improved with DSTATCOM capabilities such as harmonic reduction for a single-phase distribution system under varying solar irradiances. The simulation results have been obtained by using MATLAB/SIMULINK software in accordance with IEEE Standard 519:2014, which stated that the THD should be less than 8% for the line current at the Point of Common Coupling (PCC). The performance of the single-phase GCPV based DSTATCOM has been analysed for dynamic and steady-state conditions under varying solar irradiances.

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Khidrani, Attaullah, M. H. Habibuddin, A. S. B. Mokhtar, A. H. Sule, A. Naderipur i Z. A. Arfeen. "Improved Control Strategy for Voltage and Current Compensator in a Grid-Connected Microgrid Without Dedicated Devices". Journal of Computational and Theoretical Nanoscience 17, nr 2 (1.02.2020): 1099–105. http://dx.doi.org/10.1166/jctn.2020.8773.

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This paper proposes the combined control strategy to suppress the voltage and current harmonic contents in a three-phase hybrid fuel cell and wind turbine grid-connected inverters when subjected to non-linear load and unbalanced conditions. This innovative technique can effectively reduce the harmonic contents in the voltage and current of the studied system without any dependence on offset devices such as active and passive filters. The microgrid along with the proposed controlled strategy is modeled in Matlab/Simulink environment. In this research, it shows that the proposed control strategy not only reduces the total harmonic distortion (THD) to less than 5% (as compliance with IEEE 519 standard). It shows the superiority performance in the result as compared to existing techniques with the stabilization of unbalancing condition under different operating conditions with load changes and instant DG insertion.

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Hasan, Ghanim, Muhamad Salih i 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, nr 3 (8.08.2018): 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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Suartika, I. Made, Rukmi Sari Hartati i I. B. G. Manuaba. "Damping Harmonic Distortion Using Active Filter with PID Control at Udayana University Faculty of Engineering Bukit Jimbaran". Journal of Electrical, Electronics and Informatics 2, nr 2 (18.12.2018): 29. http://dx.doi.org/10.24843/jeei.2018.v02.i02.p02.

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Increased THD (Total Harmonics Distortion) in the utility, caused by the increasing operation of non-linear loads. High THD current (THDi) will affect the increase of power losses in the power system. In this study, THD analysis of the simulation results was performed according to IEEE 519-2014 standard on existing condition, shunt active filter operating condition and shunt active filter operating conditions with PID (proportional integral derivative) control, also analyzed losses before and after harmonic impact. The result of losses analysis on existing condition: losses phases R 3.38%, phase S 2.29%, phase T 3.33%. Total losses on existing condition 9.01%. Operation with active shunt filter is obtained losses for phase R 1.60%, phase S 2.46%, phase T 1.67%, so the total losses become 5.73%. While using the active filter with PID control for losses phase R 1.02%, phases S 0.89%, phases T 0.99%, so the total losses fell to 2.18%

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Setiyono, Setiyono, i Bambang Dwinanto. "Single Phase Power Factor Improvement Based Instantaneous Power P Q Theorm". Bulletin of Computer Science and Electrical Engineering 1, nr 2 (2.08.2020): 42–53. http://dx.doi.org/10.25008/bcsee.v1i2.9.

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This paper presents how to harmonic disturbance reduce on single phase power system. One of the most popular method is harmonic signal extraction with instantaneous power p q theorm. This algorithm implemented to harmonic cencellation by active power filter circuit be paralled with the non linier load. This filter generates of current compensation that are injected into the grid to improve power quality. This Filter is built by an inverter circuit that consists of a mosfet switch array and capasitor mounted on DC link side. Two types of loads are resitive inductive and resistive capasitive produce of current source wave form that close pure sinusoid. Simulation results show the THD index fell to the level of 2.7% in accordance with IEEE 519 standard rules which states that the harmonics content of the power system may occur below 4%, indicating that the power system can be categorized as having good quality.

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Demirdelen, T., R. I. Kayaalp i M. Tumay. "A Modular Cascaded Multilevel Inverter Based Shunt Hybrid Active Power Filter for Selective Harmonic and Reactive Power Compensation Under Distorted/Unbalanced Grid Voltage Conditions". Engineering, Technology & Applied Science Research 6, nr 5 (23.10.2016): 1133–38. http://dx.doi.org/10.48084/etasr.777.

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In recent years, shunt hybrid active power filters are being increasingly considered as a viable alternative to both passive filters and active power filters for compensating harmonics. In literature, their applications are restricted to balanced systems and low voltage applications and therefore not for industrial applications. This paper investigates the performance of a modular cascaded multilevel inverter based Shunt Hybrid Active Power Filter (SHAPF) for reactive power compensation and selective harmonics elimination under distorted/unbalanced grid voltage conditions in medium voltage levels. In the proposed control method, reactive power compensation is achieved successfully with a perceptible amount and the performance results of harmonic compensation are satisfactory. Theoretical analysis and simulation results are obtained from an actual industrial network model in PSCAD. The simulation results are presented for a proposed system in order to demonstrate that the harmonic compensation performance meets the IEEE-519 standard.

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Hutabarat, Marshal Andrea, Syafruddin Hasan, Ali Hanafiah Rambe i Suherman Suherman. "Design and simulation hybrid filter for 17 level multilevel inverter". Bulletin of Electrical Engineering and Informatics 9, nr 3 (1.06.2020): 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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