A Novel Fault Location Method of a 35-kV High-Reliability Distribution Network Using Wavelet Filter-S Transform
Author:
Guo Shuyu,Miao Shihong,Zhao Haipeng,Yin Haoran,Wang Zixin
Abstract
Timely and accurate fault location for a 35-kVhigh-reliability distribution network is one of the key technologies to improve the safety and efficiency of distribution network operations. A novel fault location method of 35-kV high-reliability distribution network is proposed in this paper. First, the distributed multipoint fault location model is established based on the power structure of a 35-kV high-reliability distribution network. The distribution of voltage and current traveling waves along the lines is comprehensively considered in this model. Secondly, we analyze the influence of noise interference, analog-digital conversion frequency, and conversion bits on the location accuracy. The simulation method of noise and analog-digital conversion is proposed based on simulated samples. Then, a wavelet filter is used to reduce the influence of noise on the calibration of the traveling wave arrival time, and matrix modulus of S transform is used to identify the arrival time for the wave. Finally, the simulation model of a 35-kV high-reliability distribution network is established to analyze the location accuracy in the case of single-phase to ground via resistance, two-phase short-circuit to ground via resistance, and three-phase short-circuit faults. The simulation results indicate that the proposed method has high location accuracy under the above fault conditions.
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous)
Reference30 articles.
1. New method of single phase-to-ground fault location based on traveling wave in distribution networks;Hong;Proc. CSU-EPSA,2017
2. Detection and location of power quality disturbances using wavelet transform modulus maxima;Hu;Power Syst. Technol.,2001
3. Generalized Fault-Location Scheme for All-Parallel AT Electric Railway System
4. Application of travelling wave based fault location in 10kV railway automatic blocking and continuous power transmission lines;Ji;Power Syst. Technol.,2003
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