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Volume 13
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10.3390/en13195028
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Article

Traveling-Wave Based Fault Location for Phase-to-Ground Fault in Non-Effectively Earthed Distribution Networks

by
Yani Wang
1,
Tao Zheng
1,*,
Chang Yang
1 and
Li Yu
2
1
Shaanxi Key Laboratory of Smart Grid, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2
Smart Grid Research Institute of China Southern Power Grid, Guangzhou 510080, China
*
Author to whom correspondence should be addressed.
Energies 2020, 13(19), 5028; https://doi.org/10.3390/en13195028
Submission received: 28 August 2020 / Revised: 22 September 2020 / Accepted: 23 September 2020 / Published: 24 September 2020
(This article belongs to the Section F: Electrical Engineering)
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Abstract

This paper presents a multi-terminal traveling-wave-based fault location method for phase-to-ground fault in non-effectively earthed distribution systems. To improve the accuracy of fault location, a two-terminal approach is used to identify the faulty branch and a single-ended approach is followed to determine the fault distance based on the arrival time of reflected traveling waves. Wavelet decomposition is employed to extract the time-frequency component of the aerial-mode traveling waves. Magnitude and polarity of the wavelet coefficients are used to estimate the fault distance starting from the propagation fault point to the branch terminal. In addition, the network is divided into several sub-networks in order to reduce the number of measurement units. The effectiveness of this approach is demonstrated by simulations considering the phase-to-ground fault that happens at different positions in the distribution network.
Keywords: fault location; non-effectively earthed system; traveling wave; distribution network fault location; non-effectively earthed system; traveling wave; distribution network

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MDPI and ACS Style

Wang, Y.; Zheng, T.; Yang, C.; Yu, L. Traveling-Wave Based Fault Location for Phase-to-Ground Fault in Non-Effectively Earthed Distribution Networks. Energies 2020, 13, 5028. https://doi.org/10.3390/en13195028

AMA Style

Wang Y, Zheng T, Yang C, Yu L. Traveling-Wave Based Fault Location for Phase-to-Ground Fault in Non-Effectively Earthed Distribution Networks. Energies. 2020; 13(19):5028. https://doi.org/10.3390/en13195028

Chicago/Turabian Style

Wang, Yani, Tao Zheng, Chang Yang, and Li Yu. 2020. "Traveling-Wave Based Fault Location for Phase-to-Ground Fault in Non-Effectively Earthed Distribution Networks" Energies 13, no. 19: 5028. https://doi.org/10.3390/en13195028

APA Style

Wang, Y., Zheng, T., Yang, C., & Yu, L. (2020). Traveling-Wave Based Fault Location for Phase-to-Ground Fault in Non-Effectively Earthed Distribution Networks. Energies, 13(19), 5028. https://doi.org/10.3390/en13195028

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