高压电器2018，Vol.54Issue(2)：50-55,61,7.DOI:10.13296/j.1001-1609.hva.2018.02.009
基于小波分解的直流断路器启动判据研究
Research of Start Criterion of DC Circuit Breaker Based on Wavelet Decomposition
邓超平 1王渝红 2林国栋 1冯学敏 1石吉银 1胡文旺 1龚鸿2
作者信息
- 1. 国网福建省电力有限公司电力科学研究院,福州350007
- 2. 四川大学电气信息学院,成都610065
- 折叠
摘要
Abstract
The performance of DC circuit breaker is directly affected by the criterion of DC circuit breaker.The characteristics of fault traveling wave of DC system are analyzed and a start criterion of DC circuit breaker based on wavelet decomposition is proposed in this paper.Firsdy,the voltage traveling wavelet of the system fault is decomposed through wavelet transform under different scales.By comparing the modulus maxima under high scales,the fault of DC system is distinguished.This paper utilizes the polarity of the modulus maxima of current traveling wavelet to determine the external fault or the internal fault and integrates those two criterions to form the start criterion of the DC circuit breaker.Finally,simulations are performed by MATLAB and PSCAD,and the simulation results show that the start criterion is simple,easy to implement,and has a high reliability and rapidity.关键词
直流断路器/小波分解/电压行波/电流行波/模极大值/启动判据Key words
DC circuit breaker/wavelet decomposition/voltage traveling wavelet/current traveling wavelet/modulus maxima/start criterion引用本文复制引用
邓超平,王渝红,林国栋,冯学敏,石吉银,胡文旺,龚鸿..基于小波分解的直流断路器启动判据研究[J].高压电器,2018,54(2):50-55,61,7.
