摘要
为了避免电流互感器(CT)暂态饱和造成传统母线保护不正确动作,提出了一种基于暂态电流行波和数学形态学的分布式母线保护。利用形态学梯度提取母线内外部故障时的暂态特征,通过比较母线上各回路初始暂态电流行波的极性及其暂态能量的大小,实现母线内外部故障准确、快速的识别。ATP仿真试验表明所提保护原理和算法的正确性和有效性。
To avoid wrong action of traditional bus protection caused by current transformer（CT） transient saturation, this paper presents a distributed bus protection based on transient current traveling waves and mathematical morphology, which extracts transient characters between internal and external faults of bus using morphological gradient, consequently, through comparing the polarity of initial transient current traveling waves and the amplitude of transient energy on all lines of protected bus, achieve precise and rapid distinguish between internal and external faults, of protected bus. ATP simulations have proven the correctness of the principle and algorithm.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第2期11-14,19,共5页
Power System Protection and Control
关键词
母线保护
暂态行波
分布式
数学形态学
形态学梯度
bus protection
transient traveling wave
distributed
Mathematical morphology
morphological gradient
