| 基于平方根滤波的网络等值算法 |
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| 引用本文： | 闫常友,刘建飞,杨奇逊,秦晓辉. 基于平方根滤波的网络等值算法[J]. 电力系统保护与控制, 2006, 34(3): 41-46 |
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| 作者姓名： | 闫常友 刘建飞 杨奇逊 秦晓辉 |
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| 作者单位： | 华北电力大学电力系统保护与动态安全监测教育部重点实验室 北京102206 |
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| 摘 要： | 结合近年来电压稳定研究的特点和新的趋势,利用母线的同步相量信息,提出采用平方根滤波器进行电力系统参数等值估计。又提出利用V_Q曲线和P_V曲线来验证参数估计结果。参数估计方法具有物理概念明确、计算量小、数值稳定性好、可以连续计算的特点。该方法避免了最小二乘、卡尔曼滤波等算法可能发散的问题。用IEEE9母线系统进行仿真计算,开发了仿真平台及相关软件,证明了本文方法的有效性。
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| 关 键 词： | 电压稳定 等值 参数估计 平方根滤波 同步相量 |
| 文章编号： | 1003-4897(2006)03-0041-06 |
| 收稿时间： | 2005-06-20 |
| 修稿时间： | 2005-07-20 |
Research on real-time equivalent based on square-root algorithm |
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| YAN Chang-you, LIU Jian-fei, YANG Qi-xun, QIN Xiao-hui. Research on real-time equivalent based on square-root algorithm[J]. Power System Protection and Control, 2006, 34(3): 41-46 |
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| Authors: | YAN Chang-you LIU Jian-fei YANG Qi-xun QIN Xiao-hui |
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| Affiliation: | Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control under Ministry of Education,North China Electric Power University, Beijing 102206, China |
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| Abstract: | Square-root algorithm is used to acquire equivalent parameters of power system in this paper.This methods combines feature and requirement of voltage stability research and uses synchronous phasors information.The V_Q curve and P_V curve is used to prove the validity of the square-root algorithm.The method has the distinctive physical meaning,less compution work,better numerical stability and can deal with the paramter estimation continuously.The result given from IEEE 9-bus system shows the effectiveness of the algorithm. |
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| Keywords: | voltage stability equivalent parameter estimation square-root algorithm synchronous phasors |
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