Title :
A New Method for Earth Fault Line Detection Based on Two-Dimensional Wavelet Transform in Distribution Automation
Author :
Liang, Jun ; Liu, Zengxun ; Yun, Zhihao ; Li, Mei ; Zhang, Li
Author_Institution :
Sch. of Electr. Eng., Shandong Univ., Jinan
Abstract :
A novel method based on two-dimensional wavelet transform to detect single-phase faults in distribution systems is proposed in this paper. After structuring analytic signals of zero sequence current, the two-dimensional wavelet transform is applied. Thus the analysis of combined signal of amplitude and phase is realized. Compared with the use of single amplitude or single phase, combined signal carries more details of transient signal. Theoretical analysis and MATLAB based simulation show that the presented method can exactly and effectively choose the faulty line in single phase-to-ground fault
Keywords :
earthing; fault location; mathematics computing; power distribution faults; power distribution lines; wavelet transforms; MATLAB; distribution automation; distribution systems; earth fault line detection; single phase-to-ground fault; transient signal; two-dimensional wavelet transform; zero sequence current; Automation; Earth; Electrical fault detection; Fault detection; Frequency; Image analysis; MATLAB; Signal analysis; Wavelet analysis; Wavelet transforms; analytic signals; distribution systems; fault line detection; single-phase faults; wavelet transform;
Conference_Titel :
Transmission and Distribution Conference and Exhibition: Asia and Pacific, 2005 IEEE/PES
Conference_Location :
Dalian
Print_ISBN :
0-7803-9114-4
DOI :
10.1109/TDC.2005.1547064
