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LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings最新文献

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Double-circuit line adaptive protection based on Kohonen neural network considering different operation and switching modes 基于Kohonen神经网络的考虑不同操作和开关方式的双回线自适应保护
LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings Pub Date : 2002-12-10 DOI: 10.1109/LESCPE.2002.1020682
S. Skok, A. Marusic, S. Tesnjak, I. Pavić
{"title":"Double-circuit line adaptive protection based on Kohonen neural network considering different operation and switching modes","authors":"S. Skok, A. Marusic, S. Tesnjak, I. Pavić","doi":"10.1109/LESCPE.2002.1020682","DOIUrl":"https://doi.org/10.1109/LESCPE.2002.1020682","url":null,"abstract":"This paper deals with problems connected to the distance protection of double-circuit transmission lines. Because of the zero sequence mutual coupling of parallel circuits, the relay \"sees\" incorrect impedance. In this paper, the authors develop an adaptive model which solves problems of single-line-to-ground faults on a single line. Different operation modes change short circuit currents (I/sub k1/ - phase-to-earth short circuit current and I/sub k3/ - three-phase short circuit current) on both ends. In fact, the parameters of the active network will be changed. The idea was to develop an adaptive model with different independent Kohonen networks. Each network is trained with short-circuit examples according to the switching mode and operation mode. Input parameters are voltage, current, switching mode and operation mode. The developed adaptive model was tested on a double-circuit 400 kV transmission line.","PeriodicalId":127699,"journal":{"name":"LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127072742","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: 9
Review of interconnection standards for distributed power generation 审查分布式发电互联标准
LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings Pub Date : 2002-12-10 DOI: 10.1109/LESCPE.2002.1020664
Liuchen Chang, H. M. Kojabadi
{"title":"Review of interconnection standards for distributed power generation","authors":"Liuchen Chang, H. M. Kojabadi","doi":"10.1109/LESCPE.2002.1020664","DOIUrl":"https://doi.org/10.1109/LESCPE.2002.1020664","url":null,"abstract":"This paper summarizes the development in standards for interconnecting distributed power generators with electric power systems. Based on a review of the interconnection standards existing and under-development in Canada and internationally, the major interconnection requirements for distributed power generators are presented in this paper in three categories: general specifications, safety and protection, and power quality.","PeriodicalId":127699,"journal":{"name":"LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114513557","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: 34
Skin effect on optimal power factor 最优功率因数的趋肤效应
LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings Pub Date : 2002-12-10 DOI: 10.1109/LESCPE.2002.1020669
M. A. Abdel Aziz, E.E. Abou Elzahab, A. Ibrahim, A. Zobaa
{"title":"Skin effect on optimal power factor","authors":"M. A. Abdel Aziz, E.E. Abou Elzahab, A. Ibrahim, A. Zobaa","doi":"10.1109/LESCPE.2002.1020669","DOIUrl":"https://doi.org/10.1109/LESCPE.2002.1020669","url":null,"abstract":"Optimization criteria are presented which allow proper calculation of optimal power factor. Optimization minimizes the line loss, maximizes the power factor and maximizes the efficiency, taking into consideration the skin effect. The performance of the obtained capacitor is discussed by means of a numerical example.","PeriodicalId":127699,"journal":{"name":"LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116480478","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
Visualization of UPFC control parameters effects on the tie-line power flow UPFC控制参数对联络线潮流影响的可视化
LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings Pub Date : 2002-12-10 DOI: 10.1109/LESCPE.2002.1020674
S. Nabavi-Niaki
{"title":"Visualization of UPFC control parameters effects on the tie-line power flow","authors":"S. Nabavi-Niaki","doi":"10.1109/LESCPE.2002.1020674","DOIUrl":"https://doi.org/10.1109/LESCPE.2002.1020674","url":null,"abstract":"This paper investigates the ability of unified power flow controller (UPFC) on controlling the tie line power transfer of an interconnected system. A form of vector presentation in complex power plane is used to visualize the effect of different control parameters of UPFC on tie line power transfer. This visualization helps to identify the effectiveness of each control parameters on power control region.","PeriodicalId":127699,"journal":{"name":"LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122154140","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
Recent progress in sensorless vector-controlled induction motor drives 无传感器矢量控制感应电机驱动的最新进展
LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings Pub Date : 2002-12-10 DOI: 10.1109/LESCPE.2002.1020670
H. Kojabadi, L. Chang, R. Doriaswami
{"title":"Recent progress in sensorless vector-controlled induction motor drives","authors":"H. Kojabadi, L. Chang, R. Doriaswami","doi":"10.1109/LESCPE.2002.1020670","DOIUrl":"https://doi.org/10.1109/LESCPE.2002.1020670","url":null,"abstract":"This paper reports the basic concept and recent progress in sensorless vector-controlled inverter fed induction tor (IM) drives. In field oriented control, a rotational transducer such as a tachometer, an encoder or a resolver, was often mounted on the IM shaft. However, a speed sensor cannot be mounted on a shaft in some cases such as motor drives in a hostile environment or high-speed motor drives. Further, these sensors suffer from low reliability, high cost and noise. Therefore, a sensorless speed drive is increasingly employed in modern industrial applications. This paper gives a short review of sensorless vector control of an induction motor drive.","PeriodicalId":127699,"journal":{"name":"LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125515464","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
The phase plane: a tool to solve the transient stability problem 相平面:解决暂态稳定问题的工具
LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings Pub Date : 2002-12-10 DOI: 10.1109/LESCPE.2002.1020677
L. Aromataris, G. Rodríguez, S. Preidikman
{"title":"The phase plane: a tool to solve the transient stability problem","authors":"L. Aromataris, G. Rodríguez, S. Preidikman","doi":"10.1109/LESCPE.2002.1020677","DOIUrl":"https://doi.org/10.1109/LESCPE.2002.1020677","url":null,"abstract":"One of the most important problems in the study of transient stability of power systems is the determination of perturbation's maximum time of permanence without losing the synchronism of the generators that feed the network. The problem is generally solved by either the application of the equal-area criterion or through numerical integration methods. In the present work, the phase-plane is proposed as an alternative tool to solve the above-mentioned problem with greater efficiency.","PeriodicalId":127699,"journal":{"name":"LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124923522","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
Improved branch-based voltage stability proximity indices. II. Application in security analysis 改进了基于支路的电压稳定接近指标。2在安全分析中的应用
LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings Pub Date : 2002-12-10 DOI: 10.1109/LESCPE.2002.1020676
A.S. Quintela, C. Castro
{"title":"Improved branch-based voltage stability proximity indices. II. Application in security analysis","authors":"A.S. Quintela, C. Castro","doi":"10.1109/LESCPE.2002.1020676","DOIUrl":"https://doi.org/10.1109/LESCPE.2002.1020676","url":null,"abstract":"In this paper, a method for contingency ranking for voltage stability is proposed. Contingencies are ranked according to a performance index defined in terms of branch-based voltage stability proximity indices. Simulation results show that the most critical contingencies can be correctly identified.","PeriodicalId":127699,"journal":{"name":"LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123034342","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
Harmonic flow study and evaluation of a petrochemical plant in Saudi Arabia 沙特阿拉伯某石化装置谐波流动研究与评价
LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings Pub Date : 2002-12-10 DOI: 10.1109/LESCPE.2002.1020684
M. Shwehdi, A. Mantawy, J. Bakhashwain, Y. El Hawi
{"title":"Harmonic flow study and evaluation of a petrochemical plant in Saudi Arabia","authors":"M. Shwehdi, A. Mantawy, J. Bakhashwain, Y. El Hawi","doi":"10.1109/LESCPE.2002.1020684","DOIUrl":"https://doi.org/10.1109/LESCPE.2002.1020684","url":null,"abstract":"Nowadays, the concern about power quality is continuously increasing, due to industry automation and use of nonlinear devices introduced in the power system. These nonlinear control devices or loads may cause harmonics or distortion to the current waveform. Such distortions will cause malfunction to the sensitive devices such as metering instruments, on-line process analyzers, and measuring devices, and false readings may be displayed. These false readings are going to affect the operation of the plant and may cause shut down and large monetary losses. The purpose of this paper is to outline the subject of harmonics and to conduct and demonstrate harmonic study on a petrochemical company power system in Saudi Arabia. The study will insure that the harmonic flows between different buses are within standards for industrial plants, and emphasize that the plant can be safely operated from the harmonics effects point of view. Also, to determine the THD values, and conduct mitigation if high THD, TIF values obtained to that are beyond the recommended practices by IEEE-519-1992.","PeriodicalId":127699,"journal":{"name":"LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128996548","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
Effect of terminal capacitance on the supply current distortion factor 终端电容对电源电流失真系数的影响
LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings Pub Date : 2002-10-28 DOI: 10.1109/LESCPE.2002.1020686
M. A. Abdel Aziz, E.E. Abou Elzahab, A. Ibrahim, A. Zobaa
{"title":"Effect of terminal capacitance on the supply current distortion factor","authors":"M. A. Abdel Aziz, E.E. Abou Elzahab, A. Ibrahim, A. Zobaa","doi":"10.1109/LESCPE.2002.1020686","DOIUrl":"https://doi.org/10.1109/LESCPE.2002.1020686","url":null,"abstract":"The effect of capacitance compensation of nonlinear loads is considered on the displacement factor, distortion factor, and power factor. Optimization of the displacement factor is found to result in reduction of the distortion factor to a minimum value.","PeriodicalId":127699,"journal":{"name":"LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134430740","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: 1
LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings LESCOPE 02。2002大型工程系统电力工程研讨会。会议论文集
LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings Pub Date : 1900-01-01 DOI: 10.1109/LESCPE.2002.1020657
{"title":"LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings","authors":"","doi":"10.1109/LESCPE.2002.1020657","DOIUrl":"https://doi.org/10.1109/LESCPE.2002.1020657","url":null,"abstract":"The following topics are dealt with: power system economics; power system deregulation; distribution systems; power electronics; power system stability; power system protection; power system fault analysis; and power quality.","PeriodicalId":127699,"journal":{"name":"LESCOPE'02. 2002 Large Engineering Systems Conference on Power Engineering. Conference Proceedings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123670144","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
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