摘要
在对传统行波差动保护研究的基础上,提出了一种新的行波差动保护方案,仅利用线路两端初始方向行波波头信息构成保护动作判据。利用多分辨形态梯度变换提取波头模极大值,同时设计了一种新型形态滤波器对信号进行前置滤波,从而组成了形态综合算法。EMTP仿真验证了所提出算法的正确性与可靠性。
On the basis of researching conventional travelling wave differential protection, a new scheme of travelling wave differential protection is proposed, in which the action cretedon is composed by information of initial wave fronts at both terminals. The modulus maxima of wave fronts are extracted by multi-resolution morphological gradient （MMG） transform, and a new type of morphological filter is designed to pre-filter the noise of travelling wave signals, thus a morphological integration algorithm is constituted. The results of simulation by EMTP verify the reliability of the proposed algorithm.
出处
《电网技术》
EI
CSCD
北大核心
2006年第9期98-102,共5页
Power System Technology
关键词
行波差动保护
多分辨形态梯度
形态综合算法
电力系统
travelling wave differential protection： multi-resolution morphological gradient（MMG）
morphological integration algorithm
power system
