| 正规形方法在互联电网低频振荡分析中的应用 |
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| 引用本文： | 徐东杰,贺仁睦,胡国强,许涛.正规形方法在互联电网低频振荡分析中的应用[J].中国电机工程学报,2004,24(3):18-23. |
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| 作者姓名： | 徐东杰 贺仁睦 胡国强 许涛 |
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| 作者单位： | 华北电力大学,102206,北京 |
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| 摘 要： | 该文介绍了正规形方法在互联电力系统低频振荡研究中的应用,详细讨论了其数学模型和处理过程.正规形方法揭示了非线性模式相关性对系统动态特性的影响.通过非线性向量场的正规形变换得到了电力系统状态方程的2阶解析解,扩展了线性相关因子的概念.正规形方法、特征值计算和Prony分析的综合应用将小信号稳定和时域仿真有效地结合起来.仿真分析的结果证明了该方法是低频振荡分析的有效工具.
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| 关 键 词： | 电力系统 低频振荡 模式相关 正规形 非线性理论 Prony分析 |
| 文章编号： | 0258-8013(2004)03-0018-06 |
| 修稿时间： | 2003年11月18 |
ANALYSIS OF LOW FREQUENCY OSCILLATIONS USING NORMAL FORM METHOD |
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| XU Dong-jie,HE Ren-mu,HU Guo-qiang,XU Tao.ANALYSIS OF LOW FREQUENCY OSCILLATIONS USING NORMAL FORM METHOD[J].Proceedings of the CSEE,2004,24(3):18-23. |
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| Authors: | XU Dong-jie HE Ren-mu HU Guo-qiang XU Tao |
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| Abstract: | This paper presents some applications of normal form method for the analysis of low frequency oscillations in interconnected power systems, and discusses mathematical model and procedure in detail. Normal form analysis reveals that nonlinear modal interactions may have significant influence on the system response. Then the second-order analytic solution of the power systems is obtained and linear concept of participation factor is extended by using normal forms transformation. Applying normal form method, conventional eigenvalue calculation and Prony analysis, small signal stability and time domain simulation can be combined efficiently. The simulation results show that the proposed method is a powerful tool for oscillation research. |
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| Keywords: | Power systems Low frequency oscillation Modal interaction Normal forms Nonlinear theory Prony analysis |
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