Title :
Time-varying transient harmonics measurement based on wavelet transform
Author :
Jianze, Wang ; Qiwen, Ran ; Fei, Wang ; Yanchao, Ji
Author_Institution :
Dept. of Electr. Eng., Harbin Inst. of Technol., China
Abstract :
This paper presents a new time-varying harmonics measurement scheme based on the wavelet transform. By projecting the amplitude of harmonics onto the subspace spanned by the wavelet and scaling functions, the proposed method transforms the time-varying amplitude estimation into constant coefficient estimation and achieves the time-varying harmonics measurement using the least mean squares algorithm (LMS). Meanwhile, the recursive algorithm (RLS) realizes the online tracking for harmonics
Keywords :
harmonic distortion; least mean squares methods; measurement theory; power system harmonics; power system measurement; power system transients; recursive estimation; time-varying systems; wavelet transforms; constant coefficient estimation; harmonics amplitude; least mean squares algorithm; online harmonics tracking; recursive algorithm; scaling functions; time-varying transient harmonics measurement; wavelet transform; Amplitude estimation; Electric variables measurement; Industrial power systems; Power harmonic filters; Power system analysis computing; Power system dynamics; Power system harmonics; Power system measurements; Resonance light scattering; Wavelet transforms;
Conference_Titel :
Power System Technology, 1998. Proceedings. POWERCON '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4754-4
DOI :
10.1109/ICPST.1998.729349
