复小波在谐波阻抗估计中的应用  

Applications of Complex Wavelets in Assessing Harmonic Impedance

作　　者：张安安[1] 马文营[1] 杨洪耕[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065

出　　处：《四川大学学报（工程科学版）》2003年第2期104-107,共4页Journal of Sichuan University (Engineering Science Edition)

摘　　要：为了提高波动法估计系统谐波阻抗的准确度,对含有谐波的电压和电流信号,运用复小波变换进行同步分层。在各次谐波上利用波动量的符号特征,研究电压和电流局部波形同步分解的传递函数特性,实现谐波阻抗估计。经过对实验电路和实测数据的分析,结果验证了其有效性。To improve the precision of assessing harmonic impedance, for assessing harmonic impedance the method of complex wavelet transform is used to delaminate synchronously. On each harmonic order, the harmonic impedance can be assessed by transfer function between fluctuation quantities of voltage and current. The results of application both in an experimental circuit and in a practical case confirm the effectivity and precision of the method.

关 键 词：复小波 谐波阻抗 波动量 非干预式 电压 电流 测量估计 

分 类 号：TM934.73[电气工程—电力电子与电力传动]