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IEEE PES Power Systems Conference and Exposition, 2004.最新文献

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Computational system for training and simulation of volt/VAr control actions 伏特/VAr控制动作训练和模拟的计算系统
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397720
W. Feijó, F. Lemos, A. Zampieri, A. Manzoni, A. Franceschi
{"title":"Computational system for training and simulation of volt/VAr control actions","authors":"W. Feijó, F. Lemos, A. Zampieri, A. Manzoni, A. Franceschi","doi":"10.1109/PSCE.2004.1397720","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397720","url":null,"abstract":"This paper presents a computational system to support real time Volt/VAr control actions in an EMS or DMS environment. The system can be used in on-line mode (monitoration, simulation and optimization) with information from SCADA, parameter database and state estimator, and off-line mode (training and past simulation and optimization), which information (operational point and topology network) are obtained from a historic on-line database. It runs automatically in the monitoration mode and on demand in simulation and optimization mode. This system is running in a regional utility in Brazil (RGE utility) since 2002. The final tests are being done to validate the final application.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123119821","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
A wireless sensor concept for managing electrical distribution networks 用于管理配电网络的无线传感器概念
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397485
M. Nordman, Matti Lehtonen
{"title":"A wireless sensor concept for managing electrical distribution networks","authors":"M. Nordman, Matti Lehtonen","doi":"10.1109/PSCE.2004.1397485","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397485","url":null,"abstract":"In this paper, methods and analysis of a simple wireless sensor concept for detecting and locating faults as well as for load monitoring are presented. The concept is based on distributed wireless sensors that are attached to the incoming and outgoing power lines of secondary substations. A sensor measures only phase current characteristics of the wire it is attached to, is not synchronized to other sensors and does not need configuration of triggering levels. The main novelty of the concept is in detecting and locating faults by combining power distribution network characteristics on system level with low power sampling methods for individual sensors. This concept enables the sensor design to be simple, energy efficient and thus applicable in new installations and for retrofit purposes in both overhead and underground electrical distribution systems.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126277102","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: 35
Superimposed components based sub-cycle protection of transmission lines 基于叠加分量的输电线路分周期保护
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397508
A. Apostolov, D. Tholomier, S. Richards
{"title":"Superimposed components based sub-cycle protection of transmission lines","authors":"A. Apostolov, D. Tholomier, S. Richards","doi":"10.1109/PSCE.2004.1397508","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397508","url":null,"abstract":"Requirements for improvements of system stability and reduction in the effects of shunt type faults in transmission and bulk systems on sensitive industrial loads result in the development of protection relays with sub-cycle operating times. At the same time the relays have to be stable under wide area disturbance conditions. The paper discusses in detail the concept of superimposed components and their application for directional detection, faulted phase selection and power swing detection. Complex distance characteristics can be used to provide sufficient resistive reach to cover the expected range of fault arc resistances, while at the same time are not affected by encroachment of the load impedance in the distance characteristic. Direct relay-to-relay communications allow the implementation of high-speed directional comparison protection.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114229763","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: 65
A methodology to assess the impact of hidden failures in protection schemes 一种评估保护计划中隐藏故障影响的方法
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397501
J. De La Ree, D. Elizondo
{"title":"A methodology to assess the impact of hidden failures in protection schemes","authors":"J. De La Ree, D. Elizondo","doi":"10.1109/PSCE.2004.1397501","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397501","url":null,"abstract":"Protection systems play an important role in the sequence of events of wide area disturbances. The impact or consequences of the unwanted disconnection of power system elements caused by hidden failures in the power system is considered in this paper by an index of severity, intended to help in prioritizing the areas of the system for which mechanisms should be developed to protect against hidden failures. A hidden failure monitoring and control systems HFMCS, would be capable of preventing the contingency caused by hidden failure that would increase the security of the power system. The approach includes system protection, planning and operation and can be effectively applied for the evaluation of electric transmission system.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125121782","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
What to do after the warning of an on-line insulation diagnostic system? Off-line PD monitoring with HVAC testing! 绝缘在线诊断系统报警后怎么办?离线PD监测与HVAC测试!
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397494
B. Kubler, W. Hauschild
{"title":"What to do after the warning of an on-line insulation diagnostic system? Off-line PD monitoring with HVAC testing!","authors":"B. Kubler, W. Hauschild","doi":"10.1109/PSCE.2004.1397494","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397494","url":null,"abstract":"The paper considers the relation between on-line monitoring and diagnostics on the one hand and high-voltage (HV) withstand and partial discharge (PD) on-site testing on the other. HV testing supplies the basic data (fingerprints) for diagnostics. In case of warnings by on-line diagnostic systems, off-line withstand and PD testing delivers the best possible information about defects and enables the classification of the risk. Because alternating voltage (AC) is the most important test voltage, the AC generation on site is considered. frequency tuned resonant (ACRF) test systems are best adapted to on-site conditions. They can be simply combined with PD measuring equipment. The available ACRF test systems and their application to electric power equipment -from cable systems to power transformers - is described.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113997492","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
Measurement of transmission line parameters from SCADA data 根据SCADA数据测量传输线参数
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397479
G. Kusic, D. Garrison
{"title":"Measurement of transmission line parameters from SCADA data","authors":"G. Kusic, D. Garrison","doi":"10.1109/PSCE.2004.1397479","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397479","url":null,"abstract":"Transmission line equivalent circuit parameters are often 25% to 30% in error compared to values measured by the SCADA system. These errors cause the economic dispatch to be wrong, and lead to increased costs or incorrect billing. The parameter errors also affect contingency analysis, short circuit analysis, distance relaying, machine stability calculations, transmission planning, and state estimator analysis. An economic example is used to demonstrate the affect of transmission line errors. SCADA measurements from several utilities are used to compute the 'real world' value of the transmission line parameters. State estimation with the estimated parameters is compared to the computations using the theoretical values.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"383 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131786564","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: 69
Analysis of adaptive single phase autoreclosing for high voltage transmission lines with various compensation levels 不同补偿水平高压输电线路单相自适应重合闸分析
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397543
M. Khoroshev, V. Faybisovich
{"title":"Analysis of adaptive single phase autoreclosing for high voltage transmission lines with various compensation levels","authors":"M. Khoroshev, V. Faybisovich","doi":"10.1109/PSCE.2004.1397543","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397543","url":null,"abstract":"High voltage transmission lines have their terminals connected to buses through circuit breakers, which may allow single-phase operation at each side of line. These transmission lines are typically equipped with compensating devices, for example, shunt reactors. When a single phase to ground short circuit takes place, relay protection initiates circuit breakers at both sides of the line to open a faulted phase. Due to the electromagnetic coupling with unfaulted phases, the secondary arc from the faulted phase to the ground is supported for some time. The use of field test and ATP software, allows the analysis of transient electromagnetic processes at the transmission line with various levels of compensation during single phase autoreclosing. A developed multifactor algorithm for adaptive autoreclosing, by using measurements of electrical quantities at the faulted line, will determine in real time mode the moment when a secondary arc is extinguished. As a result, reclosing on existing fault is avoided, while restoration of the normal power supply is performed with minimal time interruption.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134097103","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
PSO embedded evolutionary programming technique for nonconvex economic load dispatch 面向非凸经济负荷调度的粒子群嵌入进化规划技术
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397447
N. Sinha, B. Purkayastha
{"title":"PSO embedded evolutionary programming technique for nonconvex economic load dispatch","authors":"N. Sinha, B. Purkayastha","doi":"10.1109/PSCE.2004.1397447","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397447","url":null,"abstract":"This paper proposes a hybrid method that integrates the main features of particle swarm optimization (PSO) and evolutionary programming (EP) for solution of nonconvex economic load dispatch (ELD) problems having nonlinearities like valve point loadings. Algorithms based on PSO, Evolutionary programming (EP) and PSO embedded EP techniques have been developed and tested on a practical nonconvex ELD problem with valve point loading effects considered in the cost functions. Numerical results show that all the algorithms are capable of finding feasible near global solutions within a reasonable time but PSO embedded EP-algorithm with Gaussian mutation appears to outperform the other two in terms of convergence speed, solution time and quality of solution.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131791256","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: 37
Electric arc furnace impact on generator torque 电弧炉对发电机转矩的影响
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397666
M. Baldwin
{"title":"Electric arc furnace impact on generator torque","authors":"M. Baldwin","doi":"10.1109/PSCE.2004.1397666","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397666","url":null,"abstract":"Electric arc furnaces draw power in pulses at approximately 5-6 Hz. This pulsing load is generally modeled as step-load-step-unload where the step is a complete load and complete unload. This step in power creates a step in the electrical torque of a generator supplying electricity to the electric arc furnace. This step in torque creates a torsional interaction that can be potentially damaging to interconnecting shafts and possibly other parts of the generator rotor train. In the worst case the generator would be completely loaded and completely unloaded during each pulse. This paper presents a description of a simple system that could be used to investigate this torsional response. PSCAD/EMTDC is used as the tool to perform this investigation. The simulation results and possible prescriptions are presented.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131935515","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: 11
Managing oscillatory stability using on-line dynamics measurements 使用在线动态测量管理振荡稳定性
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397580
D.H. Wilson
{"title":"Managing oscillatory stability using on-line dynamics measurements","authors":"D.H. Wilson","doi":"10.1109/PSCE.2004.1397580","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397580","url":null,"abstract":"This paper presents a new solution for management of the risk of oscillatory instability. The technique combines a measurement-based stability indication method with high-quality wide-area monitoring. The system provides information to localize poorly damped oscillations, identify causal factors and propose appropriate responses. Depending on the risks presented, the actions may be real-time control actions, or off-line analysis leading to targeted control design review. The conceptual basis and the practical implementation of the technique are presented.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"189 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120981747","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: 12
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