| 校正电力系统频率偏移的改进傅立叶算法 |
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| 引用本文： | 姜惠兰,杨维,徐建强,刘梅,仇晓锋. 校正电力系统频率偏移的改进傅立叶算法[J]. 天津大学学报(英文版), 2001, 7(3): 192-196 |
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| 作者姓名： | 姜惠兰 杨维 徐建强 刘梅 仇晓锋 |
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| 作者单位： | 1. 天津大学电气自动化与能源工程学院,
2. 天津高压供电公司, |
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| 摘 要： | 针对电力系统微机保护和控制系统对输入信号精度的要求 ,研究了电力系统频率偏移对傅立叶算法的影响 ,提出一种消弱频率偏移影响的方法 ,并推导出校正频率偏移的改进傅立叶算法 .仿真结果表明该研究正确有效 ,能够大幅度地削弱频率偏移对基波分量提取精度的影响 ,提高电力系统保护和控制的精度 ,具有实用价值
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| 关 键 词： | 电力系统 保护和控制 频率偏移 傅立叶算法 |
IMPROVED FOURIER ALGORITHM FOR CORRECTING POWER SYSTEM FREQUENCY DEVIATION |
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| JIANG Hui-lan,YANG Wei,XU Jian-qiang,LIU Mei,Qiu Xiao-feng. IMPROVED FOURIER ALGORITHM FOR CORRECTING POWER SYSTEM FREQUENCY DEVIATION[J]. Transactions of Tianjin University, 2001, 7(3): 192-196 |
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| Authors: | JIANG Hui-lan YANG Wei XU Jian-qiang LIU Mei Qiu Xiao-feng |
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| Affiliation: | JIANG Hui lan 1,YANG Wei 1,XU Jian qiang 1,LIU Mei 2,QIU Xiao feng 2 |
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| Abstract: | On the basis of high precision requirement for input signals in the power system protection and control system,this paper,only for the influence of power system frequency deviation on extracting fundamental harmonic,studies the amplitude error of Fourier algorithm,presents a method of correcting frequency deviation,and further derives the formulas of improved Fourier algorithm.The simulation results verified the effectiveness of the algorithm,it not only can greatly weaken the influence of frequency deviation,but also increase the precision of the power system protection and control.As a result the study in this paper has practical application value. |
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| Keywords: | power system protection and control frequency deviation Fourier algorithm |
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