摘要
分析了电力系统常用的几种继电保护算法。针对电力系统对微机继电保护装置实时性、快速性的要求 ,提出了基于小波变换模极大值预测短路后故障相电流幅值的算法。与其他算法相比 ,该算法更能满足电力系统对继电保护装置提出的快速性要求。仿真计算结果证实了该算法作为电力系统短路故障诊断辅助算法的可行性。
Several algorithms of protection are analyzed in this paper.And according to the real time feature of microprocessor based protection set,a new algorithm is studied.This algorithm makes use of the maximum absolute value of the signal's high frequency reconstruction part after discrete wavelet transform,predicting the magnitude of short circuit current in a short time.It is quicker than other algorithms.The simulation results show the effectiveness of this algorithm.
出处
《继电器》
CSCD
北大核心
2002年第10期37-40,共4页
Relay
关键词
离散序列小波变换
继电保护
电力系统
微机保护
microprocessor based protection
decomposition and reconstruction
Daubechies wavelet
