电测与仪表2017，Vol.54Issue(20)：69-75,7.
基于小波变换的微网暂态极性比较保护原理及实现
Principle and realization of micro-grid transient polarity comparison protection based on wavelet transform
马晓伟 1李斌 2王庆平 1欧逸哲 2薄志谦1
作者信息
- 1. 许继集团研发中心,北京 100085
- 2. 天津大学 智能电网教育部重点实验室,天津 300072
- 折叠
摘要
Abstract
Micro-grid power system has the characteristics of distributed power operation flexibility and the big fault characteristic difference between grid connection and islanding way. Satisfying the quick acting and selective require-ments of micro-grid protection is one of the difficulties in micro-grid technology. In order to realize rapid and accurate fault location and isolation, this paper proposed the micro-grid transient polarity comparison protection adapting to the different operation modes of grid connection and islanding way. Based on the research of realizing the decomposition method step by step of transient high-frequency signal by Mallat algorithm of wavelet transform, the principle and algo-rithm of micro-grid transient polarity comparison protection is proposed according to transient signal comparison, and the realization scheme of micro-grid transient polarity comparison protection equipment is mainly designed. Finally, MATLAB is used to simulate the analysis to verify the protection scheme.关键词
暂态极性比较/小波变换/微电网/保护装置Key words
transient polarity comparison/wavelet transform/micro-grid/protection equipment分类
信息技术与安全科学引用本文复制引用
马晓伟,李斌,王庆平,欧逸哲,薄志谦..基于小波变换的微网暂态极性比较保护原理及实现[J].电测与仪表,2017,54(20):69-75,7.
