无功功率测量的Hilbert数字滤波器研究  

The research on Hilbert digital filter of reactive power measurement

作　　者：王薇[1] 王晓茹[1] 黄晓青[1] 谢大鹏[1] 

机构地区：[1]西南交通大学电气工程学院,成都610031

出　　处：《电测与仪表》2007年第3期9-12,37,共5页Electrical Measurement & Instrumentation

摘　　要：利用Hilbert变换测量无功功率能获得较高测量精度。本文分析了Hilbert数字滤波器在无功功率测量中的应用;采用窗函数法和等波纹切比雪夫法设计了FIR型Hilbert数字滤波器;证明等波纹切比雪夫法所设计的Hilbert数字滤波器较窗函数法有较好的性能,更能较好的提高无功功率测量精度。The measurement of the reactive power using Hilbert digital filter could obtain high precision. The application of the FIR Hilbert digital filter in the measurement area of the reactive power is analysed in this article . the FIR Hilbert digital filter is designed by using the window function method and the ripple Chebyshev method . It is proved that the Hilbert digital filter designed by the ripple Chebyshev method performs better than the filter designed by using the window function, and can improve the precision of the reactive power measurement.

关 键 词：非正弦 无功功率 Hilbert数字滤波器 

分 类 号：TM714[电气工程—电力系统及自动化]