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 fault types are determined by the properties of wavelet and the relationship between the transient current traveling wave and the modulus maxima of wavelet transform, and then the protection selectivity is realized by microcomputer logic judgment. Simulation proves the correctness of the fault type judgment and the reliability of the selective protection action.
出处
《电力大数据》
2017年第12期21-23,共3页
Power Systems and Big Data
关键词
行波
小波变换
故障选相
选择性
微机保护
travelling wave
wavelet transform
fault phase selection
selectivity
microcomputer protection
