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Автор: Grafiati
Опубліковано: 11 вересня 2023

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Статті в журналах з теми "POWER QUALITY ANALYSIS"

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Mohammadha Hussaini, M., and R. Anita. "Power Quality Analysis in Wind Power Generation Using Sliding Mode Control." International Journal of Engineering and Technology 2, no. 5 (2010): 481–85. http://dx.doi.org/10.7763/ijet.2010.v2.168.

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Panin, Victor,, and Svetlana P. ,. Savich. "ANALYSIS OF POWER QUALITY SOLAR POWER." ELECTRICAL AND COMPUTER SYSTEMS 25, no. 101 (May 10, 2017): 193–98. http://dx.doi.org/10.15276/eltecs.25.101.2017.23.

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Adapa, R. "Power quality analysis software." IEEE Power Engineering Review 22, no. 2 (2002): 20–21. http://dx.doi.org/10.1109/39.981337.

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Andrievskaya, N. V., and N. V. Pavlov. "ANALYSIS OF POWER QUALITY INDICATORS." Scientific and Technical Volga region Bulletin 7, no. 4 (August 2017): 93–95. http://dx.doi.org/10.24153/2079-5920-2017-7-4-93-95.

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., Swarupa N. "POWER QUALITY ANALYSIS USING LABVIEW." International Journal of Research in Engineering and Technology 03, no. 09 (September 25, 2014): 322–31. http://dx.doi.org/10.15623/ijret.2014.0309051.

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Saravanan, Ragavan, and P. S. Manoharan. "Performance Analysis of Unified Power Quality Conditioner for Power Quality Improvement." Applied Mechanics and Materials 573 (June 2014): 690–95. http://dx.doi.org/10.4028/www.scientific.net/amm.573.690.

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Анотація:
The Unified Power Quality Conditioner plays an important role in the constrained delivery of electrical power from a source to an isolated pool of load or from a source to the grid. This article is presented new control approaches for both series and shunt inverter. The proposed control algorithm for series and shunt converters based on FLC and synchronous reference frame theory respectively. The proposed approach eliminates the total harmonic distortions (THD) efficiently, and mitigates sag and swell present in the linear and nonlinear loads.
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Barros, Julio, Daniel Cando, and Iker Durana. "A Laboratory for Power Quality Analysis." International Journal of Electrical Engineering & Education 38, no. 3 (July 2001): 210–22. http://dx.doi.org/10.7227/ijeee.38.3.3.

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This paper describes a laboratory designed for electrical power quality analysis. Among the different types of disturbances in voltage supply that the laboratory allows us to generate are harmonics, voltage dips and short interruptions in voltage supply, voltage imbalance and frequency deviations. Using this laboratory we can test software for analysis, detection and classification of power quality disturbances and also study their effects on equipment.
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Dash, P. K., B. K. Panigrahi, and G. Panda. "Power quality analysis using s-transform." IEEE Transactions on Power Delivery 18, no. 2 (April 2003): 406–11. http://dx.doi.org/10.1109/tpwrd.2003.809616.

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Peeran, S., T. Barclay, K. Sanborn, R. Schnorr von Carolsfeld, and M. Shields. "Fault analysis through power quality metering." IEEE Industry Applications Magazine 5, no. 2 (1999): 28–31. http://dx.doi.org/10.1109/2943.750389.

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Dash, P. E. K., B. K. Panigrahi, and G. Panda. "Power Quality Analysis Using S-Transform." IEEE Power Engineering Review 22, no. 7 (July 2002): 60. http://dx.doi.org/10.1109/mper.2002.4312414.

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Дисертації з теми "POWER QUALITY ANALYSIS"

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Suwanapingkarl, Pasist. "Power quality analysis of future power networks." Thesis, Northumbria University, 2012. http://nrl.northumbria.ac.uk/12625/.

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Abdullah, Abdullah. "Power quality analysis at Murdoch University." Thesis, Abdullah, Abdullah (2018) Power quality analysis at Murdoch University. Honours thesis, Murdoch University, 2018. https://researchrepository.murdoch.edu.au/id/eprint/41902/.

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Анотація:
Introduction of new electronic technologies that are more sensitive to disturbances in the power network has made it necessary to monitor the quality of power supplied. This project presents a study of the power quality at Murdoch University, and aims at identifying the causes of poor power quality and provide the solutions to these power quality problems. The main objective of this project is to analyse the power quality of the electricity system of Murdoch University in order to identify the causes of poor power quality and provide solutions to improve the power quality. Furthermore, for all the specific goals that had been set before the commencement of this project have all been accomplished. The most common power quality issues in most electrical networks globally include voltage sags, voltage swells, voltage transients, and frequency harmonics. Other power quality issues that can be experienced include voltage flicker, voltage unbalance, inter-harmonics, brownouts, direct current, short-term and long-term power interruption. A discussion of all these issues has been conducted in this report with their impacts on equipment in the network identified to be wear and tear, overheating, tripping of circuit breakers, and improper functioning of equipment. The compensating devices that can be used for improving power quality such as Active and Passive filters, Distribution Static Compensator, Dynamic Voltage Restorer, and Unified Power Quality Conditioner have also been analysed in this report. The direct and indirect costs of power quality have been reviewed in this project with the finding that 50 % of the global turnover of the electricity sector equating to 500 billion Euros is lost annually due to poor power quality. IEEE 519, AS/NZS 61000.3.2.2003, ANSI C84.1, IEEE 1459, EN 50160, and IEC 61000 are some of the power quality standards that have been discussed in Power Quality Analysis at Murdoch University this project. Based on the data collected from Murdoch University, particularly from 1.330, in substation 12, South Street Building 330, chancellery. Subsequently, the power quality problems experienced at the institution include voltage unbalance of 0.295 or 0.3486 % based on NEMA and IEC formula respectively, a 42.26 % current unbalance, distortions in current angle, power factor, and harmonic distortion in the range of 1.8 to 2.8 %.
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Cartier, J. C. "Power quality analysis in a CC-130 Hercules aircraft power distribution system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0001/MQ44836.pdf.

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Palethorpe, Ben. "A novel system impedance measurement for power system analysis and improvement in power quality." Thesis, University of Nottingham, 2002. http://eprints.nottingham.ac.uk/13199/.

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Анотація:
This thesis presents an investigation of on-line supply impedance measurement. Network impedance values are invaluable for power system modelling and simulation. Without knowledge of a network structure and the impedances that make up that structure it is impossible to simulate or predict harmonic propagation within a plant. If the impedance structure for a plant is known then it may be possible to alleviate voltage distortion problems by simply redistributing sensitive loads to points of low harmonic distortion. Alternatively distorting loads may be repositioned thus removing the need for additional filters or compensation equipment. The supply impedance, in particular, is of interest. At a simple level it is important for wiring, fuse and circuit breaker calculations. It is also important when designing filters for power factor correction or harmonic attenuation. Two novel on-line impedance measurement techniques are presented. Both techniques apply a small disturbance to a power network, using measurements of the subsequent transients it is possible to identify the system impedance at the point of measurement. These techniques are implemented both in simulation and experimentally. Excellent identification was possible for linear impedance networks. The performance of the techniques was also investigated in the presence of various non-linear loads. Limitations to both approaches are identified. An active shunt filter was designed and constructed for this work. Experimental impedance measurement was undertaken using this hardware. It was therefore possible to demonstrate the possibility of impedance measurement using an existing active shunt filter and during its normal operation. Finally experimental measurement data was used to demonstrate the operation of the active shunt filter using reference currents determined from supply voltage and supply impedance.
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Chan, Yau Chung John. "A novel electric power quality monitoring system for transient analysis." Thesis, City University London, 2014. http://openaccess.city.ac.uk/5911/.

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Анотація:
Electricity is vital for our daily life in modern cites. In order to ensure its reliability and supply, an electric power monitoring system is indispensable in an electric power system. Currently, most electric power monitoring systems are designed for steady-state monitoring only. They may not be able to monitor instantaneous power disturbances, such as voltage surge, happened in electric power systems. In fact, instantaneous power disturbances are frequently found in electric power systems, which result in equipment failures and cause financial losses. Therefore, a novel electric power monitoring system is proposed in this thesis. Besides traditional functions, the proposed system is capable of monitoring and analyzing instantaneous power disturbances in electric power systems. Novelties of the proposed monitoring system are in the following three major aspects. Firstly, the proposed system is capable of monitoring instantaneous power disturbances. Unlike traditional monitoring systems, the proposed system captures not only statistical power quantities (e.g. kW, kWh), but also voltage and current waveforms. Since a considerable communication network bandwidth is required to transmit electric waveforms in a remote monitoring system, a novel waveform compression algorithm is proposed to realize real-time electric power waveform monitoring on low-speed communication networks (e.g. Zigbee). Secondly, the proposed system is capable of identifying various kinds of power disturbances automatically. It relieves electrical engineers from manned disturbance identification on preserved waveforms. Unlike traditional disturbance identification algorithms, the proposed system can identify not only voltage disturbances, but also current disturbances. Hence, it can provide a better chance in identifying more problems and disturbances in electric power systems. Thirdly, a novel time-frequency analysis method is proposed to analyze preserved waveforms. The proposed method is an improvement to the well-known Discrete Wavelet Packet Transform (DWPT). DWPT has been used by researchers and engineers to analyze disturbances and harmonics in electric power systems. However, DWPT is subjected to a non-uniform leakage problem, which has been discussed intensively in many studies. In order to tackle this issue, a frequency shifting scheme is introduced in the proposed method. A prototype has been implemented to demonstrate the feasibility of the proposed electric power monitoring system. There are two major components – a prototype meter and a central monitoring system. The performance of the prototype has been evaluated by conducting experiments and field tests. The capability of the proposed system for realtime remote monitoring has been verified on Zigbee network, which is a low-power, low speed wireless communication network.
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Omishat, Ahmad Yousef. "A Real-time Harmonic Detector Design to Improve Power Quality in Power Systems." Youngstown State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ysu150413499882562.

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Matusevicius, Tadas. "Analysis of Swedish Wind Power Forecast Quality over Forecast Horizon and Power System Operation Implications." Thesis, KTH, Elkraftteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-213706.

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Анотація:
Wind power, as one of the fastest growing means of generation, can oer environmentalbenets. However, due to its stochastic nature it is dicult to designaccurate prediction tools, thus the forecast errors are inherently present. Goodunderstanding of the errors that may occur is imperative for greater penetrationof wind power into the system as it can facilitate power system planning andoperation.In this paper, wind power forecasts for dierent price areas in Sweden areanalysed and compared. For this purpose, data starting November 2015 weredownloaded every hour from the Nord Pool spot database and Python code forparsing and analysis was written. Common indicators, such as the root-meansquare(RMSE) and bias error were used to characterise the accuracy of theforecasts. As expected, it was shown that in general the RMSE decreases as theforecast hour approaches the delivery hour. In addition, systematic bias erroraround the day-ahead market closure time was identied and discussed.The paper continues to analyse wind power forecast error distribution withrespect to the forecast time and dierent production levels. Four statistical momentsof distribution function were calculated and compared. It was shown thatfor the forecast horizons between 0 and 36 hours the forecast error distributionfunctions are negatively skewed leptokurtic.The temporal wind power forecast error correlations between dierent horizonsas well as the spatial correlations between dierent price areas are calculatedand discussed. As expected, a stronger correlation was identied betweenneighbouring price areas. In addition, correlation coecients between the forecasterrors and the up and down regulation prices were calculated.Finally, a model was developed to quantify the amount of operating reservelevel needed to compensate the uncertainty in the system due to wind powerand load forecasts. Future scenarios with an increasing wind power penetrationlevel are simulated and the amount of operating reserve level for individualprice areas is calculated. It was shown that with rapidly increasing wind powerpenetration, especially price area SE3 will need to plan for higher operatingreserve levels to successfully cope with the uncertainty in the load and windpower forecasts.
Vindkraft, som den mest okande satt for elproduktion, kan skapa miljofordelar.Pa grund av sin stokastiska karaktar ar det svart att skapa ett exakt vindkraftprognosverktyg utan prognosfel. Lamplig uppfattning om fel ar avgorande foratt underlatta driften och planeringen av elsystemet.I den har uppsatsen analyseras och jamfors vindkraftprognoser for olika prisomradena i Sverige. Analys har utforts av data som hamtats fran och mednovember 2015 med en timmes mellanrum fran Nord Pool-spot databasen. Vanligaindikatorer, som RMSE (root-mean-square) och metodfel anvandes for attkarakterisera prognosens noggrannhet. Det visar att RMSE i allmanhet minskarnar prognostiden nar leveranstiden. Dessutom identierades och diskuteradessystematiska fel runt den dagen-forre marknaden's stangningstid.Uppsatsen fortsatter att analysera vindkraftprognosfelfordelning med hansyntill prognostid och olika produktionsnivaer. Fyra statistiska moment av fordelningsfunktionenberaknades och jamfordes. Det visades att for prognoshorisonternamellan 0 och 36 timmar ar prognosfelfordelningsfunktionerna negativaskevade leptokurtiska.Den tidsmassiga vindkraftprognosfelkorrelationen mellan olika horisonter samtde rumsliga korrelationerna mellan olika prisomraden beraknas och diskuteras.Som forvantat identierades en starkare korrelation mellan narliggande prisomraden. Dessutom beraknades korrelationskoecienter mellan prognosfel ochupp- och nedreguleringspriser.Slutligen utvecklades en modell for att kvantiera mangden av drift reservniva som behovs for att kompensera osakerheten i systemet pa grund avosakra vindkraft och lastprognoser. Framtidsscenarier med okande vindkraftspenetrationsniva simuleras och mangden driftsreservniva for enskilda prisomradenberaknas. Det visar att, med en snabbt okande vindkraftspenetration, sarskiltprisomradet SE3 kommer att behova planeras for hogre driftsreservnivaer foratt framgangsrikt klara osakerheten i last- och vindkraftprognoserna.
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Carlstedt, Tobias. "Algorithms for analysis of GSM phones’ modulation quality." Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-17248.

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Castillo, Luis Reguera. "Analysis and practical assessment of converter-dominated power systems : stability constraints, dynamic performance and power quality." Thesis, University of Strathclyde, 2018. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=30404.

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Анотація:
For years, large power systems have been predominantly managed using the very well known synchronous machine on the generation side. With the increasing penetration of load and generation interfaced by converter-based systems, the conventional syn-chronous machine is being gradually replaced by these new devices. However, this slow and steady change of the generation technology has led to side-effects which can affect to the local stability and, if no remedial action is taken, system-wide stability. The main objective of this thesis is to understand, expose and overcome the weak-nesses of converter-dominated grids within a laboratory environment. To do so, a converter of 10kVA has been built implementing the standard D-Q axis Current Injection (DQCI) control and, for first time to date, the Virtual Synchronous Machine with Zero Inertia (VSM0H). Further developments have been made to this control strategy to implement this theoretical algorithm into a real system. The solutions proposed in this thesis for converter-dominated grids are based on the Grid Forming Nodes (GFN) solution. This composition suggests the usage of a combination of DQCI and Virtual Synchronous Machine (VSM) converters to achieve stability within converter-dominated grids. However, there is limited understanding about VSM functioning. Initially, the application of VSM-style converters was proposed as a natural replacement of the real synchronous machine present in the system without understanding which are the specific weaknesses that affect to this type of grid. Due to the aforementioned reasons, this thesis aims to provide a more scientific and rigorous explanation of why the GFN solution can provide stability for converter-dominated power systems. Using the converter built, it is possible to recreate scenarios where the technical challenges involved in power systems can be understood. Going from well-established solutions for relatively low Levels of Penetration (LoP), such as grid-friendly or smart converters, to an insightful explanation of why these solutions are not valid for converter-dominated grids with high values of LoP. This thesis puts more emphasis on the latter case, assessing experimentally the GFN solution for representative scenarios and control strategies used in the converter built explicitly for this project. Initially, three experiments are conducted to identify the weaknesses of converter-dominated grids. During these initial scenarios, it has been found that DQCI converters behave as current sources from the grid point of view, following an already imposed voltage signal. As current sources, DQCI converters do not provide effective voltage regulation. On the contrary, GFN/VSM converters behave as voltage sources behind an inductance from the grid point of view. Thus, they contribute to the entire grid stability by assuring the local voltage stiffness. However, further experiments with unbalanced and non-linear loads have found that this capability is finite and directly dependent on the equivalent converter filter impedance. During the execution of the experiments, there have been additional contributions explained throughout this thesis: The virtual resistor technique. Incorporating an additional feed-forward term into the inner current loop, the stabilizing effect of the parasitic inductor resistance is simulated. As result, the inner control loop operates in a more stable manner. The explanation, implementation and validation of a novel control strategy which makes the converter operate with variable speed response depending on the grid events. This adaptive functioning leads to a more robust operation for both the converter and the grid. A new control strategy based on the VSM0H (so called in this thesis as VSM0H+). Measuring the negative sequence voltage present in the grid, it is possible to add a compensation term which can provide an almost perfect voltage regulation under the presence of heavily unbalanced loads.
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Palani, Kevin. "Power Quality Analysis of a Three-Phase Cycloconverter under Variable Operating Conditions." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/314.

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The objective of this study is to observe the correlations between variable operating conditions and power quality parameters for a three-phase to single-phase cycloconverter. The cycloconverter is examined in its most straightforward form without additional output filters or elaborate control methods. Variable operating conditions include input frequency, output frequency, and resistive load size. The power quality parameters of interest are power factor, input current total harmonic distortion (THD), output voltage THD, and efficiency. The scope of the project includes analytical calculations, PSpice simulations, as well as a hardware implementation. The results show that output frequency has minimal effect on power quality. High input frequencies tend to yield less efficiency and larger loads yield higher efficiency. Total harmonic distortion undesirably peaks at a combination of low input frequency and high output frequency. Extrapolations can be made for the cycloconverter operating at different frequencies and loads based on the trends observed within the test matrix.
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Книги з теми "POWER QUALITY ANALYSIS"

1

Heydt, G. T. Electric power quality. West LaFayette, Ind: Stars in a Circle Publications, 1991.

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2

J, Aspnes, and Alaska. Dept. of Transportation and Public Facilities. Research Section., eds. Rural electric power quality analysis: Data base development : final report. Fairbanks, Alaska: Alaska Dept. of Transportation and Public Facilities, Research Section, 1987.

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3

Gilberto Francisco Martha de Souza. Thermal Power Plant Performance Analysis. London: Springer London, 2012.

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4

1949-, Porter Gregory J., and Van Sciver, J. Andrew, 1968-, eds. Power quality solutions: Case studies for troubleshooters. Lilburn, Ga: Fairmont Press, 1999.

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5

Nair, Raj. Power integrity analysis and management for integrated circuits. Upper Saddle River, NJ: Prentice Hall, 2010.

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6

1959-, Bennett Donald, ed. Power integrity analysis and management for integrated circuits. Upper Saddle River, N.J: Prentice Hall, 2010.

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7

Valdyke, Brad E. A cost-benefit analysis of power quality management in the avionics repair facility. Monterey, Calif: Naval Postgraduate School, 1998.

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8

Ralley, W. E. Multivariate analysis of water chemistry changes following hydroelectric development in northern Manitoba, Canada. [Winnipeg?]: Northern Flood Agreement Manitoba, 1990.

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9

Quillin, Dan. An Analysis and evaluation of the 1985 advance forecast to the Minnesota Environmental Quality Board and the Department of Energy and Economic Development. St. Paul, Minn. (150 E. Kellogg Blvd., St. Paul 55101): The Division, 1986.

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10

United States. Bonneville Power Administration., ed. Bonneville Power Administration watershed management program draft evnironmental impact statement. Portland, OR: Bonneville Power Administration, 1997.

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Частини книг з теми "POWER QUALITY ANALYSIS"

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Montaño, Juan-Carlos, Juan-Carlos Bravo, and María-Dolores Borrás. "Joint Time–Frequency Analysis of the Electrical Signal." In Power Quality, 41–72. London: Springer London, 2007. http://dx.doi.org/10.1007/978-1-84628-772-5_3.

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Soliman, Soliman Abdel-Hady, and Abdel-Aal Hassan Mantawy. "Electric Power Quality Analysis." In Energy Systems, 381–409. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-1752-1_7.

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3

Voelkle, Manuel, and Edgar Erdfelder. "Power Analysis." In Encyclopedia of Quality of Life and Well-Being Research, 4989–93. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-0753-5_2230.

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Voelkle, Manuel C., and Edgar Erdfelder. "Power Analysis." In Encyclopedia of Quality of Life and Well-Being Research, 1–7. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-69909-7_2230-2.

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Ghosh, Arindam, and Gerard Ledwich. "Analysis and Conventional Mitigation Methods." In Power Quality Enhancement Using Custom Power Devices, 55–112. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-1153-3_3.

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Akramullah, Shahriar. "Performance, Power, and Quality Tradeoff Analysis." In Digital Video Concepts, Methods, and Metrics, 297–320. Berkeley, CA: Apress, 2014. http://dx.doi.org/10.1007/978-1-4302-6713-3_8.

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Bhadane, Kishor V., Dipak P. Patil, Anil S. Dube, and Sunildatta S. Kadlag. "Distributed Generation-Based Power Quality Analysis." In Deregulated Electricity Market, 249–78. New York: Apple Academic Press, 2022. http://dx.doi.org/10.1201/9781003277231-14.

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Samal, Sarita, Akansha Hota, Prakash Kumar Hota, and Prasanta Kumar Barik. "Power Quality Analysis of a Distributed Generation System Using Unified Power Quality Conditioner." In Advances in Intelligent Systems and Computing, 157–69. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6584-7_16.

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Akhtar, Mohammad Faisal, Mohammad Nishat Akhtar, Junita Mohamad-Saleh, Wan Amir Fuad Wajdi Othman, and Elmi Abu Bakar. "Performance Analysis of a Unified Power Quality Compensator to Mitigate Power Quality Problems." In Lecture Notes in Electrical Engineering, 808–13. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8129-5_123.

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Ramnath, Gaikwad Sachin, and R. Harikrishnan. "Statistical Analysis of Household Power Supply Quality." In Lecture Notes in Electrical Engineering, 341–57. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-4971-5_26.

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Тези доповідей конференцій з теми "POWER QUALITY ANALYSIS"

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Desmet, J., and S. Djokic. "Power disturbance modelling and analysis." In IET Seminar on Power Quality. Institution of Engineering and Technology, 2012. http://dx.doi.org/10.1049/ic.2012.0126.

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Anuszczyk, Jan, and Boguslaw Terlecki. "Analysis of electric power quality." In 2009 10th International Conference on Electrical Power Quality and Utilisation - (EPQU). IEEE, 2009. http://dx.doi.org/10.1109/epqu.2009.5318801.

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Jiang, Xian-kang, Jian-wen Ren, and Peng-yun He. "Analysis and Application of Power Quality Data from Power Quality Monitoring Network." In 2011 Asia-Pacific Power and Energy Engineering Conference (APPEEC). IEEE, 2011. http://dx.doi.org/10.1109/appeec.2011.5748650.

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Brenna, M., F. Iannone, C. Lazaroiu, and D. Zaninelli. "Power systems safety analysis with power quality devices." In 2006 IEEE Power Engineering Society General Meeting. IEEE, 2006. http://dx.doi.org/10.1109/pes.2006.1709451.

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Misak, Stanislav, Lukas Prokop, and Petr Bilik. "Power quality analysis in off-grid power system." In 2014 ELEKTRO. IEEE, 2014. http://dx.doi.org/10.1109/elektro.2014.6848914.

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Wartmann, B. "Power system disturbance analysis and power quality monitoring." In Eighth IEE International Conference on Developments in Power System Protection. IEE, 2004. http://dx.doi.org/10.1049/cp:20040175.

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Panigrahi, B. K., Anant Baijal, Krishna Chaitanya P., and Preetam P. Nayak. "Power quality analysis using complex wavelet transform." In 2010 Power India. IEEE, 2010. http://dx.doi.org/10.1109/pedes.2010.5712564.

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Nikum, Karuna, Rakesh Saxena, and Abhay Wagh. "Harmonic analysis of residential load based on power quality." In 2016 IEEE 7th Power India International Conference (PIICON). IEEE, 2016. http://dx.doi.org/10.1109/poweri.2016.8077306.

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Xin, Gao, and Dai Shengkui. "Power quality prediction algorithms and analysis." In 2012 International Conference on System Science and Engineering (ICSSE). IEEE, 2012. http://dx.doi.org/10.1109/icsse.2012.6257231.

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Kamal, A. H. M., Md Mahbubur Rahman, Md Mohaiminul Haque, Salman Sadiq, and Aminul Hoque. "Biomass quality analysis for power generation." In 2014 8th International Conference on Electrical and Computer Engineering (ICECE). IEEE, 2014. http://dx.doi.org/10.1109/icece.2014.7026905.

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Звіти організацій з теми "POWER QUALITY ANALYSIS"

1

Zoelle, Alexander, Marc J. Turner, and Vincent Chou. Quality Guide Energy System Studies: Performing a Techno-economic Analysis for Power Generation Plants. Office of Scientific and Technical Information (OSTI), June 2015. http://dx.doi.org/10.2172/1513274.

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Zoelle, Alexander, Marc J. Turner, and Vincent Chou. Quality Guide Energy System Studies: Introduction to Performing a Techno-Economic Analysis for Power Generation Plants. Office of Scientific and Technical Information (OSTI), June 2015. http://dx.doi.org/10.2172/1513273.

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3

Fisher, II, James C. Quality Guide Energy System Studies: Introduction to Performing a Techno-Economic Analysis for Power Generation Systems (Web Video). Office of Scientific and Technical Information (OSTI), June 2015. http://dx.doi.org/10.2172/1556899.

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Glantz, C. S., K. W. Burk, C. J. Driver, J. C. Liljegren, D. A. Neitzel, M. N. Schwartz, M. T. Dana, G. L. Laws, L. A. Mahoney, and K. Rhoads. Air quality analysis and related risk assessment for the Bonneville Power Administration's Resource Program Environmental Impact Statement. Office of Scientific and Technical Information (OSTI), April 1992. http://dx.doi.org/10.2172/5422686.

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Hall and Brown. PR-343-14607-R01 Miniaturized Gas Chromatography and Gas Quality Sensor. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), February 2015. http://dx.doi.org/10.55274/r0010558.

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Анотація:
In natural gas transmission and distribution, many metering stations utilize gas chromatography to ensure the gas complies with the pipeline�s gas quality tariff provisions and to determine the chemical energy content of the gas for billing purposes. It is also used as a check on the operation of gas ultrasonic flowmeters through a calculation of the speed of sound in the gas. Because of limitations on existing gas chromatographs (GC�s), including high installed cost, analysis time, carrier gas consumption and others, there is a desire to consider alternate technologies for natural gas analysis. PRCI has sponsored a study of technologies that utilize the variation in absorption/scattering of optical wavelengths by different molecules. The purpose of this study is to extend that study to the use of additional technologies, such as MEMS (Micro-Electro-Mechanical Systems). This is not a new approach, but recent advancements offer a greater possibility of achievement of the desired goals than in the past. This study reviewed and evaluated work in process with MEMS technology to provide a smaller, less ex-pensive, lower-power and faster GC that can be utilized in a Class 1 Division 2 area. Developments at both commercial firms and in university MEMS research programs have been included. Since there have been several programs to evaluate �energy meters� that attempt to measure gas quality by calculating the BTU content of a gas sample, this study focused on micro-GC�s that can make a much more precise measurement of gas quality.
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Augustine, Chad R., Dev Millstein, James D. McCall, Jordan E. Macknick, Scott R. Nicholson, David J. Keyser, Seongeun Jeong, and Garvin A. Heath. GeoVision Analysis Supporting Task Force Report: Impacts. The Employment Opportunities, Water Impacts, Emission Reductions, and Air Quality Improvements of Achieving High Penetrations of Geothermal Power in the United States. Office of Scientific and Technical Information (OSTI), May 2019. http://dx.doi.org/10.2172/1524769.

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Lopez, David, Mariana Weiss, José Francisco Pessanha, Karla Arias, Livia Gouvea, and Michelle Carvalho Metanias Hallack. The Effects of the Energy Transition on Power Sector Employment in Latin America. Inter-American Development Bank, February 2023. http://dx.doi.org/10.18235/0004715.

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The present study analyzes the relation between energy transition and the job creation potential in Latin America. It capitalizes on companies' characteristics to infer potential hiring process drivers in forthcoming years. The analysis is based on an econometric model on cross-sectional data to explain the dependent variable "potential hiring rate" depending on the firm's size (based on the number of clients), area of activity or technology, employees' level of education, and the existence of labor policies. The data came from 338 companies interviewed, including generation, transmission, distribution, energy transition services, oil and gas, and construction companies in six Latin American Countries (Bolivia, Chile, Costa Rica, Mexico, Panama, and Uruguay). The econometric study focused on 135 companies that declared hiring new employees in the next year concerning the time they were interviewed. The results show that the smaller energy companies with a larger participation of a qualified workforce will tend to have a higher expected hiring rate in the forthcoming year, implying an inverse relationship between a firm's size and potential hiring rate. The model findings convey that as the workforce is compounded with more qualified employees, the higher the expansion of the company's labor force will be, particularly in renewable generation companies. There is an additional aspect worth considering about the factors behind the company's potential hiring rate, and it is the question of job quality. The results suggest that firms hiring more are those with a lower number of policies in place. It can be explained by the fact that more traditional companies tend to have better-established policies, such as hydrocarbon and utilities. These are not the companies with the highest increase in the workforce. This takeaway raises a discussion about whether a change in the job's quality is associated with the energy transition or if it is just associated with new entrants that will become traditional in the following years. Moreover, it also helps to explain some of the political economies of the labor market that may play a role in the energy transition process. Therefore, one of the present study's main takeaways is the need to analyze deeper and promote job quality in smaller energy companies.
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Hwa, Yue-Yi, Sharon Kanthy Lumbanraja, Usha Adelina Riyanto, and Dewi Susanti. The Role of Coherence in Strengthening CommunityAccountability for Remote Schools in Indonesia. Research on Improving Systems of Education (RISE), February 2022. http://dx.doi.org/10.35489/bsg-rise-wp_2022/090.

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Incoherence in accountability relationships can hamper the quality of education. Such incoherence can be a particular challenge in resource-constrained, remote villages where teachers tend to have higher educational capital and social status than the parents and communities that they serve. We analyze quantitative and qualitative data from a randomized controlled trial of a social accountability mechanism (SAM) for schools in remote Indonesian villages. The intervention had three treatment arms, all of which included the SAM, which engaged village-level stakeholders in a consensus-building process that led to joint service agreements for supporting the learning process. Prior analyses have found that all three treatment arms significantly improved student learning, but the treatment arm combining the SAM with performance pay based on camera-monitored teacher attendance led to much larger gains than the SAM-only treatment or the treatment arm combining the SAM with teacher performance pay based on a community-evaluated scorecard. Drawing on a range of quantitative data sources across all treatment schools (process monitoring, survey, and service agreement indicators) and qualitative data from nine case study schools (interviews and focus group discussions), we show firstly that the student learning gains across all three treatment arms were accompanied by increases in the coherence of the accountability relationships between village-level stakeholders, and in the degree to which these relationships were oriented toward the purpose of cultivating learning. We further show that the treatment combining SAM with camera-monitored teacher performance pay led to greater improvements in the coherence of accountability relationships than the other treatment arms, because the cameras improved both the technical capacity and the social legitimacy of community members to hold teachers accountable. This coherence-focused, relational explanation for the relative effectiveness of the treatment arms has more explanatory power than alternative explanations that focus narrowly on information quality or incentive structure. Our analysis reinforces arguments for ensuring that accountability structures are coherent with the local context, including local social structures and power dynamics.
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Stuedlein, Armin, Ali Dadashiserej, and Amalesh Jana. Models for the Cyclic Resistance of Silts and Evaluation of Cyclic Failure during Subduction Zone Earthquakes. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, April 2023. http://dx.doi.org/10.55461/zkvv5271.

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This report describes several advances in the cyclic failure assessment of silt soils with immediate and practical benefit to the geotechnical earthquake engineering profession. First, a database of cyclic loading test data is assembled, evaluated, and used to assess trends in the curvature of the CRR-N (cyclic resistance ratio - the number of equivalent cycles) relationship. This effort culminated in a plasticity index-dependent function which can be used to estimate the exponent b in the power law describing cyclic resistance, and may be used to estimate the cyclic resistance of silt soils as well as the number of equivalent loading cycles anticipated for subduction zone earthquakes. Statistical models for the cyclic resistance ratio and cyclic strength ratio are presented in this report. The SHANSEP (Stress History and Normalized Soil Engineering Properties)-inspired functional form of these models have been trained and tested against independent datasets and finalized using a combined dataset to provide reasonable estimates of resistance based on the available data. These models can be used to provide provisional estimates of the CRR-N and cyclic strength ratio power laws for cyclic shear strain failure criteria ranging from 1 to 10%, within certain stated limitations. The ground motion records within the NGA Subduction Project which have been released to the public to-date are implemented to examine the role of subduction zone earthquake characteristics on the number of equivalent loading cycles for a wide range of soils with exponents b ranging from 0.05 (moderate plasticity silt and clay) to 0.35 (dense sand). This analysis shows that the number of loading cycles for a given magnitude subduction zone earthquake is larger than those previously computed, whereas the corresponding magnitude scaling factors for use with the Simplified Method span a smaller range as a result of the ground motion characteristics. Owing to the large variability in the computed equivalent number of loading cycles, consideration of the uncertainty is emphasized in forward analyses. The work described herein may be used to estimate cyclic resistance of intact non-plastic and plastic silt soils and corresponding factor of safety against cyclic failure for a range in cyclic shear strain failure criteria, to plan cyclic laboratory testing programs, and to calibrate models for use in site response and nonlinear deformation analyses in the absence of site-specific cyclic test data. As with any empirical approach, the models presented herein should be revised when additional, high-quality cyclic testing data become available.
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Birch, Izzy. Thinking and Working Politically on Transboundary Issues. Institute of Development Studies (IDS), January 2020. http://dx.doi.org/10.19088/k4d.2021.010.

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There is growing consensus that political factors are a key determinant of development impact. The practice of Thinking and Working Politically (TWP) is built around three interconnected principles: (i) strong political analysis, insight, and understanding; (ii) detailed appreciation of, and response to, the local context; and (iii) flexibility and adaptability in program design and implementation. The literature notes that while TWP emphasises the centrality of politics and power, technical knowledge is still important and can reinforce the political agenda, for example by increasing the confidence of smaller states or by strengthening collective understanding. Furthermore, improving the quality of domestic cooperation can be a step towards regional cooperation, and flexible engagement with the diverse range of actors that populate transboundary settings has been shown to be an effective strategy. The literature also highlights lessons learned including Transboundary cooperation can be built from the bottom up and for development partners, pre-existing bilateral partnerships may facilitate their engagement at a transboundary level, particularly on sensitive issues. Given the relatively isolated experience of TWP in transboundary settings, the evidence base for this report is also limited. The two areas where most examples were found concern regional integration and transboundary water management.
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