| 特征值灵敏度方法及其在电力系统小干扰稳定分析中的应用 |
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| 引用本文： | 刘涛,宋新立,汤涌,仲悟之,吴国旸,刘楠.特征值灵敏度方法及其在电力系统小干扰稳定分析中的应用[J].电网技术,2010(4). |
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| 作者姓名： | 刘涛 宋新立 汤涌 仲悟之 吴国旸 刘楠 |
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| 作者单位： | 中国电力科学研究院; |
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| 摘 要： | 随着电力系统的发展,特别是大区互联电网的出现和扩大,小干扰稳定性问题日益突出。为了满足小干扰稳定性分析的要求,介绍了3种特征值灵敏度——特征值对元件参数、传递函数和运行参数的灵敏度计算方法,并分析了其在电力系统小干扰稳定中的应用。这3种特征值灵敏度能够弥补现有分析方法的不足,有效地指导某些装置或系统的参数设计与选址,以及调整系统的运行方式,以改善小干扰稳定性,抑制低频振荡的发生。基于灵敏度的发电重新调度法,通过合理分配系统发电机出力,使事故下受小干扰稳定约束的电力传输最大化,是小干扰稳定问题的有效解决途径之一。因此在现有的小干扰稳定分析程序中增加特征值灵敏度的快速计算功能是十分必要和迫切的。
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| 关 键 词： | 大区互联电网 小干扰稳定性 特征值灵敏度 低频振荡 发电重新调度法 |
Eigenvalue Sensitivity and Its Application in Power System Small Signal Stability |
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| LIU Tao,SONG Xin-li,TANG Yong,ZHONG Wu-zhi,WU Guo-yang,LIU Nan.Eigenvalue Sensitivity and Its Application in Power System Small Signal Stability[J].Power System Technology,2010(4). |
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| Authors: | LIU Tao SONG Xin-li TANG Yong ZHONG Wu-zhi WU Guo-yang LIU Nan |
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| Affiliation: | LIU Tao,SONG Xin-li,TANG Yong,ZHONG Wu-zhi,WU Guo-yang,LIU Nan (China Electric Power Research Institute,Haidian District,Beijing 100192,China) |
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| Abstract: | With the development of power systems,especially the appearance and extension of large-scale interconnected power grid,the small signal stability becomes more noteworthy. To meet the demand of analysis on small signal stability,three calculation methods of eigenvalue sensitivities,i.e.,the sensitivity of eigenvalue to component parameters,transfer function and operating parameters,are presented and their applications in the analysis of small signal stability of power systems are analyzed. The three kinds of... |
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| Keywords: | interconnected large-scale power grids small signal stability eigenvalue sensitivity low-frequency oscillations generation rescheduling algorithm |
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