摘要
在行波母线保护的基本原理和动作判据的基础上 ,给出了对应一个半开关接线方式的原理方案。小波变换作为新的数学分支 ,在这里用来提取电流行波信号中的故障信息 ,实现原理方案。大量仿真结果表明 ,所提行波母线保护方案具有原理简单 ,易于实现 ,动作速度快等特点 ,能够满足电力系统母线保护的要求 ,具有实际可行性。
The principle scheme aimed at one and a half circuit breaker model is presented based on basic principle and criterion of bus-bar protection.Wavelet transform was proved to be a suitable tool for the analysis of travelling waves and is utilized here to extract fault information from current travelling waves and implement protection scheme.Large amount of EMTP simulations prove that new bus-bar protection based on current travelling waves has satisfactory characteristics and is feasible in practice.
出处
《电工技术学报》
EI
CSCD
北大核心
2003年第3期98-101,共4页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目 (5 98770 2 0
5 0 0 770 11)
关键词
母线保护
电流行波
小波变换
Bus-bar protection,current travelling waves,wavelet transform
