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2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)最新文献

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Simplified reactance one-port compensator for ASD harmonic mitigation 用于ASD谐波缓解的简化电抗单端口补偿器
2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951) Pub Date : 2004-09-12 DOI: 10.1109/ICHQP.2004.1409322
E. El-Saadany
{"title":"Simplified reactance one-port compensator for ASD harmonic mitigation","authors":"E. El-Saadany","doi":"10.1109/ICHQP.2004.1409322","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409322","url":null,"abstract":"A simplified three-phase PWM adjustable speed drive (ASD) is modeled and validated for the study of power system harmonic. A reactance one-port compensator is designed and tested to mitigate the harmonics injected by the ASD and keep the THD within the recommended standards. Sensitivity studies; including parameters deviation and speed variation have been conducted to determine the safe operating margins of the designed compensator.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132444969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A distribution network analyzer for power quality studies 用于电能质量研究的配电网分析仪
2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951) Pub Date : 2004-09-12 DOI: 10.1109/ICHQP.2004.1409428
E. R. Collins, G. Stout, S. Whisenant
{"title":"A distribution network analyzer for power quality studies","authors":"E. R. Collins, G. Stout, S. Whisenant","doi":"10.1109/ICHQP.2004.1409428","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409428","url":null,"abstract":"A low-voltage, scale model of a radial distribution system has been developed. This model system replicates an actual distribution feeder in a scaled lab-safe hardware model. The intent is to use this scaled system to study the effects of faults and capacitor switching on radial feeders in the presence of power-electronic loads, distributed generation and voltage regulation equipment. The use of a physical system instead of computer simulation allows proprietary equipment to be tested in real situations without the errors introduced by incomplete models. Additionally, the scaled system serves as a hands-on instructional tool for studying the effects of faults, transients and other system anomalies that affect power quality.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128159969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Modeling waveform distortion produced by DC locomotive conversion system. Part 1: Locomotive model 对直流机车转换系统产生的波形畸变进行建模。第一部分:机车模型
2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951) Pub Date : 2004-09-12 DOI: 10.1109/ICHQP.2004.1409401
R. Langella, A. Sollazzo, A. Testa
{"title":"Modeling waveform distortion produced by DC locomotive conversion system. Part 1: Locomotive model","authors":"R. Langella, A. Sollazzo, A. Testa","doi":"10.1109/ICHQP.2004.1409401","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409401","url":null,"abstract":"The paper presents a new high computational efficiency model for the calculation of the waveform distortion caused by the locomotive E404P when it is supplied by a 3 kV DC voltage. It follows a previous paper about the same locomotive supplied by 2/spl times/25 kV AC voltages at 50 Hz. Here, the adjustable speed drives of this locomotive, used to feed the AC motors, are configured as multistage DC/DC/AC PWM-controlled converters. The proposed model is based on the switching function approach and use the iterative harmonic and interharmonic analysis procedure. The waveform distortion evaluated in different operating conditions shows the good accuracy of the results obtainable by means of the new model, compared with those of time domain simulations. The new model is suitable to be used in the framework of a comprehensive model of the railway system, including AC/DC substations, like that presented in the Part 2 of this paper with reference to the Italian railways system.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123007911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Voltage dip compensation in LV networks using distributed energy resources 利用分布式能源的低压电网电压跌落补偿
2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951) Pub Date : 2004-09-12 DOI: 10.1109/ICHQP.2004.1409451
R. Mieński, R. Pawełek, I. Wasiak, P. Gburczyk, C. Foote, P. Espie
{"title":"Voltage dip compensation in LV networks using distributed energy resources","authors":"R. Mieński, R. Pawełek, I. Wasiak, P. Gburczyk, C. Foote, P. Espie","doi":"10.1109/ICHQP.2004.1409451","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409451","url":null,"abstract":"The paper presents possibilities of using distributed generation (DG) sources to mitigate voltage dips in LV grids due to short circuits in the MV and HV network. DG sources based on voltage source inverters (VSI) with pulse width modulation (PWM) control were considered. The DG sources generate active power depending on the depth of voltage dips under faults conditions. The compensation effect is shown for different DG source capabilities and different coupling between the LV and MV networks, i.e. the short circuit power of the distribution transformer. The PSCADIEMTDC programme was used for analysis of system performance. Results of simulation for a study network are presented, which show the effectiveness of compensation.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124178683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
The role of a synchronous distributed generator on voltage sags 同步分布式发电机对电压跌落的作用
2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951) Pub Date : 2004-09-12 DOI: 10.1109/ICHQP.2004.1409427
E. R. Collins, J. Jiang
{"title":"The role of a synchronous distributed generator on voltage sags","authors":"E. R. Collins, J. Jiang","doi":"10.1109/ICHQP.2004.1409427","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409427","url":null,"abstract":"A fault at a distribution substation is studied to investigate the cause of an extended sag after the fault was cleared. Local distributed generation is often thought to help support the system during a fault and minimize sags. However in this case, the presence of a synchronous generator seemed to lengthen the duration of the sag. The combination of the load on the system and the generator was found to contribute to the extended sag. The primary factor was the reactive power drawn by the load during the fault and recovery along with the reaction of the generator. Simulation studies show that such a response could have been predicted if the generator and load were modeled accurately.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115245620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Dynamic power filter & capacitor compensator for isolated self-excited induction generator driven by a wind turbine 风力机驱动的隔离式自激感应发电机的动态电力滤波器和电容补偿器
2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951) Pub Date : 2004-09-12 DOI: 10.1109/ICHQP.2004.1409327
A. Sharaf, S. Murugan
{"title":"Dynamic power filter & capacitor compensator for isolated self-excited induction generator driven by a wind turbine","authors":"A. Sharaf, S. Murugan","doi":"10.1109/ICHQP.2004.1409327","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409327","url":null,"abstract":"The paper presents a novel dynamic power filter & capacitor compensator (DPFCC) using a dynamic generator voltage, RMS current and speed tracking controller to stabilize the isolated SEIG driven wind energy conversion scheme.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114848949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Power system time variance-LPTV model implementation and identification problems 电力系统时方差- lptv模型的实现与辨识问题
2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951) Pub Date : 2004-09-12 DOI: 10.1109/ICHQP.2004.1409431
Z. Staroszczyk
{"title":"Power system time variance-LPTV model implementation and identification problems","authors":"Z. Staroszczyk","doi":"10.1109/ICHQP.2004.1409431","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409431","url":null,"abstract":"In power system harmonic studies the power system nonlinearity is sometimes observed. It mainly manifests as a time variance of power system properties as the nonlinear system components working points are set by relatively stable system voltage waveforms. The LPTV (linear periodically time variant) power system model is a natural extention of the time invariant model, and better describes the power system voltage/current relations. As the LPTV model deals with parametric system description it is more difficult in implementation and identification. Two approaches to LPTV system description are presented in the paper. The interpolating methods are discussed which allow for efficient model identification in nonstationary power system conditions.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127598845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Harmonic torques in three-phase induction motors supplied by nonsinusoidal voltages 由非正弦电压供电的三相感应电动机的谐波转矩
2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951) Pub Date : 2004-09-12 DOI: 10.1109/ICHQP.2004.1409430
J. D. de Abreu, J.S. de Sa, C. Prado
{"title":"Harmonic torques in three-phase induction motors supplied by nonsinusoidal voltages","authors":"J. D. de Abreu, J.S. de Sa, C. Prado","doi":"10.1109/ICHQP.2004.1409430","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409430","url":null,"abstract":"Low-short-circuit-capacity electric systems may present considerable distortion in the voltage waveform when supplying nonlinear loads. Three-phase induction motors when connected to such a system may suffer additional requirements during start-up as overheating in the rotor bars due to the skin effect, and mechanical vibrations in the shaft due to harmonic torques. This work presents an approach to analyze the behavior of the harmonic torques produced by three-phase induction motors when supplied by nonsinusoidal voltage, taking into account the skin-effect in the rotor bars and the saturation of the stator leakage reactance during start-up. It is important to notice that the analysis and the derived equations are based on ordinary data available in the manufacturer's catalogue.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126882112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Linearised frequency domain modelling of AC impedance unbalance in HVDC systems 高压直流系统交流阻抗不平衡的线性频域建模
2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951) Pub Date : 2004-09-12 DOI: 10.1109/ICHQP.2004.1409386
D. J. Hume, A. Wood
{"title":"Linearised frequency domain modelling of AC impedance unbalance in HVDC systems","authors":"D. J. Hume, A. Wood","doi":"10.1109/ICHQP.2004.1409386","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409386","url":null,"abstract":"Nonlinear power electronic circuits operating in unbalanced power systems are the cause of many unwanted uncharacteristic harmonics. In case of 12 pulse HVDC converter, fundamental unbalance causes positive sequence third and negative sequence ninth harmonics, among others. This paper investigates the use of a linearised frequency domain technique, modelling an unbalanced system impedance as a small signal deviation from a balanced operating point. The time domain simulation package, PSCAD/EMTDC, is used to verify the results from the linearised solution method. The frequency domain technique is efficient and easily expanded to more complex networks with multiple converters.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127036081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A novel power quality assessment using real time hardware-in-the-loop simulation 一种新颖的实时半实物仿真电能质量评估方法
2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951) Pub Date : 2004-09-12 DOI: 10.1109/ICHQP.2004.1409436
Y. Liu, M. Steurer, S. Woodruff, P. Ribeiro
{"title":"A novel power quality assessment using real time hardware-in-the-loop simulation","authors":"Y. Liu, M. Steurer, S. Woodruff, P. Ribeiro","doi":"10.1109/ICHQP.2004.1409436","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409436","url":null,"abstract":"While off-line simulations and laboratory measurements have been the tool of choice to study power quality issues in the past, a novel method based on real-time (RT) hardware-in-the-loop (HIL) simulation is proposed in this paper. The RT-HIL environment employs a commercial real-time digital simulator allowing RT simulations of large power systems and its controls at a bandwidth between DC and 3 kHz. In the example described in this paper an industrial controller provides firing pulses to a simulated thyristor controlled rectifier. The latter is fed form a simulated distribution system. In such a truly closed loop environment the firing board is tested for its sensitivity to poor quality power. The results show that the board is insensitive to large voltage distortions exceeding values recommended in the standards. However, certain single-phase voltage sags which cause a phase shift of the faulted phase voltage lead to misfiring of the board. It is concluded that such detail can only be revealed by the proposed RT-HIL method and will lead to a substantial improvement in equipment performance in the future.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125797777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
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