| 基于模态技术和Q-U曲线的一种电压稳定性指标 |
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| 引用本文： | 韩光,丁晓群,刘小波,冯磊. 基于模态技术和Q-U曲线的一种电压稳定性指标[J]. 电力系统保护与控制, 2006, 34(6): 21-23 |
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| 作者姓名： | 韩光 丁晓群 刘小波 冯磊 |
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| 作者单位： | 1.河海大学电气工程学院，江苏 南京 210098;2.山东泗水供电公司，山东 泗水 273200 |
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| 摘 要： | 结合电力系统自身的特点和要求,利用稳态运行情况下电力系统中的信息,采用模态分析技术和CPF法得出关键节点的Q-U曲线和临界电压。并在此基础上,利用一个新的电压稳定性指标(U/Ucr)2,来分析故障情况下系统的电压稳定性。用IEEE39母线系统进行了仿真计算,结果表明该方法计算速度快,准确性好,适用于在线电压稳定性分析。
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| 关 键 词： | 电压稳定性指标 模态分析 连续潮流法 |
| 文章编号： | 1003-4897(2006)06-0021-03 |
| 收稿时间： | 2005-07-12 |
| 修稿时间： | 2005-07-12 |
An index of voltage stability based on modal analysis and Q-U curve |
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| HAN Guang , DING Xiao-qun , LIU Xiao-bo, FENG Lei. An index of voltage stability based on modal analysis and Q-U curve[J]. Power System Protection and Control, 2006, 34(6): 21-23 |
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| Authors: | HAN Guang DING Xiao-qun LIU Xiao-bo FENG Lei |
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| Affiliation: | 1. School of Electrical Engineering, Hohai University, Nanjing 210098, China; 2. Sishui Power Supply Company, Sishui 273000, China |
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| Abstract: | Modal analysis technique and CPF method are used to acquire Q-U curve and threshold voltage of the key node in stability condition.Based on the analyzed voltage,a new voltage stability index(U/Y_(cr))~2 is used to analyse voltage stability of contingency condition.IEEE 39-bus system simulation shows that the method is fast,accurate and suitable for on-line voltage stability analysis. |
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| Keywords: | voltage stability index modal analysis CPF method |
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