基于小波变换的单端供电干线故障判断及保护研究  

Study on Fault Judgment and Protection of Single-end Power Supply Main Line Based on Wavelet Transformation

作　　者：王拓[1] 邹有明[1] 杜生华 江均[1] 王俊美[1] 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454003

出　　处：《煤矿机电》2006年第3期21-22,25,共3页Colliery Mechanical & Electrical Technology

摘　　要：利用小波的性质及暂态电流行波与小波变换模极大值的关系判断故障类型,再利用微机逻辑判断实现保护的选择性。仿真证明了故障类型判断的正确性以及保护有选择动作的可靠性。The selectivity of protection can be realized by analyzing the wavelet features and utilizing the relations between the transient current traveling wave and maximum modular value of wavelet transform so as to judge the fault types before they are logically judged by microcomputer. The simulation proves the correctness of fault-type judging and the reliability of selective movement protection.

关 键 词：行波 小波变换 故障选相 选择性 微机保护 

分 类 号：TD611.5[矿业工程—矿山机电]