A New Detection Way for Single- Phase to Ground Fault Based on Energy Function Intergral and Wavelet Packets

Abstract:

In order to find new fault line selection method of single-phase distribution network, First parallel resistance in the neutral point in order to increase the transient component of the fault line, obtained the line energy after the failure through the integral transform , initially selected probable fault lines , on this basis, decompose all the transient zero sequence currents in every line by separation based on nicer separate frequency characteristic of wavelet packets, to accurately determine the greatest fault line by the characteristic that the value of second singular point generated by zero sequence current is maximum and its polarity is opposite to the other normal lines, simulation results show the effectiveness and correctness of the method. So the method for detection of the fault line based on wavelet packets and the compare of energy is new and effective.

• Periodical: Applied Mechanics and Materials (Volumes 217-219)
• Pages: 2629-2633
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.217-219.2629
• Online since: November 2012
• Authors: Yang Liu, Zhang Bao Chen, Lin Ye
• Keywords: Integral Transform, Second Singular Point, Wavelet Packets

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