计及负荷特性的电力系统小信号稳定性分析
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摘要
考虑到小信号稳定性问题在电力系统中的问题日益突出,且负荷模型的选取对系统稳定分析中有很大的影响,往往因模型的不合适使所得结果与实际情况不符合,因此研究负荷特性对系统小信号稳定性的影响成为一种必然趋势。首先从概念和分析法上介绍系统小信号稳定性,再从负荷特性对系统稳定性影响着手,引出了负荷的静态和动态的数学模型,并以简单电力系统为研究对象,分析不同的负荷特性以及特定感应电动机负荷参数变化在不同运行方式下对系统小信号稳定性分析的影响。
Considering the widespread problem of small signal stability in power system,which seriously threatens the safe operating of power system,and the discrepancy between calculation results and facts in power system stability analysis by choosing inappropriate load models,therefore,the influence of load characteristics on small signal stability analysis in system has come to be a research subject which people concern. In this paper,the concept and analysis method of small signal stability analysis in power system are presented firstly,and from the influence of load models on the importance of power system stability analysis,two kinds of load models are introduced.Taking a simple power system as the subject investigated,the influences which different load characteristics and the variation of some certain induction motor load parameters have on power system small signal stability analysis based on different operating modes are presented.
Considering the widespread problem of small signal stability in power system,which seriously threatens the safe operating of power system,and the discrepancy between calculation results and facts in power system stability analysis by choosing inappropriate load models,therefore,the influence of load characteristics on small signal stability analysis in system has come to be a research subject which people concern. In this paper,the concept and analysis method of small signal stability analysis in power system are presented firstly,and from the influence of load models on the importance of power system stability analysis,two kinds of load models are introduced.Taking a simple power system as the subject investigated,the influences which different load characteristics and the variation of some certain induction motor load parameters have on power system small signal stability analysis based on different operating modes are presented.
引文
[1]Kundur P.Power System Stability and Control[M].New York:Mc Graw-Hill Inc,1994.
[2]Kundur P,Rogers G J,Wong D Y,et al.A comprehensive computer program package for small signal stability analysis of power systems[J].IEEE Trans on Power Systems,1990,5(4):1076-1083.
[3]翁斌伟,励刚,陈陈(Weng Binwei,Li Gang,Chen Chen).电力系统小信号稳定分析的面向对象建模方法(Object oriented modeling method for power system small signal stability analysis)[J].电网技术(Power System Technology),2000,24(10):15-18,55.
[4]Pereira L,Kosterev D,Mackin P,et al.An interim dynamic induction motor model for stability studies in the WSCC[J].IEEE Trans on Power Systems,2002,17(4):1108-1115.
[5]赵勇(Zhao Yong).感应电动机负荷模型的静态特性分析(Analysis on static characteristics of induction motor models)[J].电力系统及其自动化学报(Proceedings of the CSUEPSA),2010,22(2):86-92.
[6]王成山,柴华,谢小荣,等(Wang Chengshan,Chai Hua,Xie Xiaorong,et al).合负荷模型动静负荷比例的在线辨识(Online identification of percentage of dynamic component in composite load model)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2008,20(3):14-19.
[7]石景海,贺仁睦(Shi Jinghai,He Renmu).动态负荷建模中的负荷时变性研究(Load time-variation study in dynamic load modeling)[J].中国电机工程学报(Proceedings of the CSEE),2004,24(4):85-90.
[8]李欣然,翟文杰,周二专(Li Xinran,Zhai Wenjie,Michael Zhou).面向对象的电网仿真程序中负荷模型扩展方法(Extension approach for load model in object-oriented power system simulation software)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2009,21(2):96-103.
[9]张红斌,贺仁睦,刘应梅(Zhang Hongbin,He Renmu,Liu Yingmei).感应电动机负荷模型参数解析灵敏度分析及参数辨识策略研究(Analysis on parameter analytic sensitivity of induction motor load model and parameter identification strategy)[J].电网技术(Power System Technology),2004,28(6):10-14.
[2]Kundur P,Rogers G J,Wong D Y,et al.A comprehensive computer program package for small signal stability analysis of power systems[J].IEEE Trans on Power Systems,1990,5(4):1076-1083.
[3]翁斌伟,励刚,陈陈(Weng Binwei,Li Gang,Chen Chen).电力系统小信号稳定分析的面向对象建模方法(Object oriented modeling method for power system small signal stability analysis)[J].电网技术(Power System Technology),2000,24(10):15-18,55.
[4]Pereira L,Kosterev D,Mackin P,et al.An interim dynamic induction motor model for stability studies in the WSCC[J].IEEE Trans on Power Systems,2002,17(4):1108-1115.
[5]赵勇(Zhao Yong).感应电动机负荷模型的静态特性分析(Analysis on static characteristics of induction motor models)[J].电力系统及其自动化学报(Proceedings of the CSUEPSA),2010,22(2):86-92.
[6]王成山,柴华,谢小荣,等(Wang Chengshan,Chai Hua,Xie Xiaorong,et al).合负荷模型动静负荷比例的在线辨识(Online identification of percentage of dynamic component in composite load model)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2008,20(3):14-19.
[7]石景海,贺仁睦(Shi Jinghai,He Renmu).动态负荷建模中的负荷时变性研究(Load time-variation study in dynamic load modeling)[J].中国电机工程学报(Proceedings of the CSEE),2004,24(4):85-90.
[8]李欣然,翟文杰,周二专(Li Xinran,Zhai Wenjie,Michael Zhou).面向对象的电网仿真程序中负荷模型扩展方法(Extension approach for load model in object-oriented power system simulation software)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2009,21(2):96-103.
[9]张红斌,贺仁睦,刘应梅(Zhang Hongbin,He Renmu,Liu Yingmei).感应电动机负荷模型参数解析灵敏度分析及参数辨识策略研究(Analysis on parameter analytic sensitivity of induction motor load model and parameter identification strategy)[J].电网技术(Power System Technology),2004,28(6):10-14.