中国电力2011，Vol.44Issue(2)：10-13,4.
基于希尔伯特-黄变换的超高压输电线路行波差动保护
HHT based traveling wave differential protection used on EHV transmission line
赵臻峰 1曾祥君 1秦小安 2张小丽3
作者信息
- 1. 长沙理工大学,电气与信息工程学院,湖南,长沙,410076
- 2. 武汉市供电公司,湖北,武汉,430013
- 3. 长沙市电业局,湖南,长沙,410015
- 折叠
摘要
Abstract
The mathematical signal tools used in traveling wave differential protection method is not implemented effectively. In order to solve this problem, a new traveling wave differential protection method using the difference between instantaneous frequencies of initial traveling wave crest on both sides is presented. Hibert-Huang Transform (HHT) is used to get instantaneous frequency of initial current traveling wave. Influence of wave trapper to the initial traveling wave crest is also analyzed. When line fault occurs in external area or internal area,the numbers of traps which traveling waves passed in both sides are different, and instantaneous frequencies of initial traveling wave crest on both side are different too. The traveling wave differential protection method is formed based on this difference which can be used to distinguish between internal fault and external fault. Simulation results show that it is an easy and effective protection method.关键词
行波/行波波头/差动保护/HHT/阻波器/瞬时频率分类
信息技术与安全科学引用本文复制引用
赵臻峰,曾祥君,秦小安,张小丽..基于希尔伯特-黄变换的超高压输电线路行波差动保护[J].中国电力,2011,44(2):10-13,4.
