Fault Line Selection Research on Single Phase Ground Fault of Small Current Grounding System Based on Wavelet Theory

Abstract:

For the problem of single-phase ground fault line selection of small current grounding system, in this paper, according to the wavelet theory advantage processing capabilities of transient mutation signal ,line selection criterion based on wavelet transform modulus maximum principle of singularity detection is proposed . By analyzing the single-phase ground fault waveform of small current grounding system in the neutral point not effective grounding system, steady state and transient characteristics of fault occurs is obtained, building bus with three outlets of 10KV small current grounding system simulation model by using MATLAB software, and verifying the validity though a large number of simulation experiments on the method.

• Periodical: Applied Mechanics and Materials (Volumes 513-517)
• Pages: 3552-3555
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.513-517.3552
• Online since: February 2014
• Authors: Xiang Gao*, Lu Wang
• Keywords: Line Selection, Single-Phase Ground Fault, Small Current Grounding System, Wavelet Theory

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