电力系统保护与控制2012，Vol.40Issue(3)：85-89,5.
基于小波能量谱和灰色综合关联度的HVDC换相失败故障诊断
Fault diagnosis of commutation failures in the HVDC system based on the wavelet energy spectrum and grey comprehensive relationship degree
徐松林 1黄少先1
作者信息
- 1. 华南理工大学电力学院,广东广州510640
- 折叠
摘要
Abstract
Based on the wavelet energy spectrum (WES) and grey comprehensive relationship degree (GCRD), a new fault diagnosis method of commutation failures in the HVDC system is proposed, in which WES is used to quantify fault characteristics, and then the fault reasons are identified according to the GCRD analysis. First, it uses arc extinguishing angle to determine whether the commutation failures occur or not; then, the wavelet analysis of DC current fault signals is conducted to obtain the wavelet coefficients on every scale and calculate the WES; the obtained WES and the reference sequence of failures are analyzed based on GCRD analysis, and thus the fault reasons are identified according to the principle of maximum relationship degree. Simulation results show that the method can accurately diagnose commutation failures.关键词
小波能量谱/灰色综合关联度/换相失败/故障诊断Key words
wavelet energy spectrum/ grey comprehensive relationship degree/ commutation failures/ fault diagnosis分类
信息技术与安全科学引用本文复制引用
徐松林,黄少先..基于小波能量谱和灰色综合关联度的HVDC换相失败故障诊断[J].电力系统保护与控制,2012,40(3):85-89,5.
