| 局部弱联诱发互联电网强迫振荡机制分析 |
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| 引用本文： | 顾丽鸿,周孝信,陶洪铸,严剑峰.局部弱联诱发互联电网强迫振荡机制分析[J].电网技术,2010(12). |
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| 作者姓名： | 顾丽鸿 周孝信 陶洪铸 严剑峰 |
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| 作者单位： | 上海交通大学电气与电子工程学院;中国电力科学研究院;国家电网公司; |
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| 基金项目： | 国家重点基础研究发展计划(973项目)项目资助(2004CB217904)~~ |
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| 摘 要： | 应用扩展的多自由度强迫振动理论和特征值分析方法,研究了局部弱联诱发互联电网发生区域强迫振荡的机制。针对中国电力网络现阶段互联的特点,指出弱阻尼局部振荡是系统稳定运行的潜在威胁。重点分析了电力系统多机强迫振荡与系统固有振荡频率、机组相关因子的关系。提出了如果扰动源振荡频率接近区间振荡模式,局部振荡机组满足与区间振荡模式相关性较强等条件,就会诱发系统发生区域强迫低频振荡。根据广域测量系统记录的数据,应用该机制分析了华中电网的2次强迫低频振荡事故,结果验证了该机制的合理性和正确性。
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| 关 键 词： | 小干扰稳定 特征值分析 多自由度系统 强迫振荡 广域测量系统 |
Analysis on Mechanism of Inter-Area Forced Oscillation Caused by Local Weak Interconnection in Interconnected Power Grid |
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| GU Lihong,ZHOU Xiaoxin,TAO Hongzhu,YAN Jianfeng.Analysis on Mechanism of Inter-Area Forced Oscillation Caused by Local Weak Interconnection in Interconnected Power Grid[J].Power System Technology,2010(12). |
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| Authors: | GU Lihong ZHOU Xiaoxin TAO Hongzhu YAN Jianfeng |
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| Affiliation: | GU Lihong1,ZHOU Xiaoxin2,TAO Hongzhu3,YAN Jianfeng2(1.School of Electrical and Electronic Engineering,Shanghai Jiaotong University,Minhang District,Shanghai 200240,China,2.China Electric Power Research Institute,Haidian District,Beijing 100192,3.State Grid Corporation of China,Xicheng District,Beijing 100031,China) |
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| Abstract: | By use of the theory of multiple-degree-of-freedom(MDOF) systems and eigenvalue analysis,the mechanism of inter-area forced oscillation in interconnected power grid brought out by local weak interconnection is researched.According to current features of power gird interconnection in China,it is pointed out that the underdamped local oscillation is the potential menace to system stable operation.The relation between multi-machine forced oscillation and system natural oscillation frequency and that between mu... |
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| Keywords: | small signal stability eigenvalue analysis multiple-degree-of-freedom system forced oscillation wide area measurement system(WAMS) |
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