Title :
Harmonic Analysis System of Power Network Based on Wavelet Transform
Author :
Zhenmei, Li ; Jin, Shen ; Tianze, Li ; Shulian, Yang
Author_Institution :
Shandong Univ. of Technol., Zibo
Abstract :
The harmonic analysis system of power network was developed based on wavelet transform by using the virtual instrument. The system consists of sensors, signal conditioning circuits, data acquisition and computers. Within the system, the wavelet packet was adopted to analyse harmonics and locate the distortion point by means of the MATLAB script node in LabVIEW, in which the signals were divided into multi -frequency band according to the power signal character, and the frequency band was selected adaptively so as to promote the time-frequency resolution of signals.
Keywords :
harmonic analysis; power engineering computing; power system harmonics; power system measurement; signal processing equipment; time-frequency analysis; virtual instrumentation; wavelet transforms; Lab VIEW; MATLAB script node; data acquisition; harmonic analysis system; multifrequency band; power network; power signal character; signal conditioning circuits; time-frequency resolution; virtual instrument; wavelet packet; wavelet transform; Circuits; Data acquisition; Harmonic analysis; Instruments; Power system harmonics; Sensor systems; Signal analysis; Wavelet analysis; Wavelet packets; Wavelet transforms; Virtual instrument; frequency band; harmonics; wavelet transform;
Conference_Titel :
Electronic Measurement and Instruments, 2007. ICEMI '07. 8th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-1136-8
Electronic_ISBN :
978-1-4244-1136-8
DOI :
10.1109/ICEMI.2007.4350974
