| 用于电压闪变包络跟踪的改进RLS算法 |
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| 引用本文： | 陈涵,赵军,王开宇,李大路,田庆阳.用于电压闪变包络跟踪的改进RLS算法[J].现代电力,2011,28(5):24-28. |
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| 作者姓名： | 陈涵 赵军 王开宇 李大路 田庆阳 |
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| 作者单位： | 1. 辽宁省沈阳供电公司,辽宁沈阳,110061
2. 辽宁省电力有限公司,辽宁沈阳,110061 |
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| 摘 要： | 电压闪变是严重的电能质量问题之一,本文提出采用基于可变遗忘因子的高阶累积量递推最小二乘(RLS)算法跟踪电压闪变包络。基于高阶累积量的误差准则取代传统的基于二阶统计量的误差准则,使算法不受任何高斯噪声的影响;可变遗忘因子的应用,使得算法能够快速跟踪包络的变化,又能在稳态情况下具有较好的收敛性能。Matlab仿真分析结果表明,在高斯噪声污染存在的情况下,本文算法相比传统RLS算法具有更高的估计精度,能够在噪声中准确地检测出电压闪变包络。
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| 关 键 词： | 高斯噪声 高阶累积量 RLS算法 可变遗忘因子 电压闪变包络 |
Improved RLS Algorithm for Tracking Voltage Flicker Envelope |
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| CHEN Han,ZHAO Jun,WANG Kaiyu,LI Dalu,TIAN Qingvang.Improved RLS Algorithm for Tracking Voltage Flicker Envelope[J].Modern Electric Power,2011,28(5):24-28. |
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| Authors: | CHEN Han ZHAO Jun WANG Kaiyu LI Dalu TIAN Qingvang |
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| Affiliation: | CHEN Han 1,ZHAO Jun1,WANG Kaiyu2,LI Dalu2,TIAN Qingyang2 (1.Liaoning Shenyang Power Supply Company,Shenyang 110061,China,2.Liaoning Electric Power Company Limited,China) |
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| Abstract: | Voltage flicker is a serious problem for electric power quality,and the higher-order cumulant RLS algorithm based on variable forgetting factor is introduced in this paper as effective approach for tracking the voltage flicker envelope.With the improved RLS algorithm,the error criterion based on conventional mean-squared-error(MSE)is replaced by the higher-order cumulant MSE criterion,which makes the algorithm not influence by the Gaussian noise. The application of variable forgetting factor(VFF)not only ca... |
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| Keywords: | Gaussian noise higher-order cumulant RLS algorithm variable forgetting factor voltage flicker envelope |
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