摘要
提出了用相关分析法和模糊集理论来识别故障电流及励磁涌流的新方法。论证了该原理与谐波制动原理之间的对应关系 ,证明了辨识对称涌流的有效性。模拟实验结果表明 :本方法可准确识别故障电流和励磁涌流 ;即使在空载合闸于内部短路故障时 ,保护继电器也能迅速可靠动作 。
In the paper presented a new algorithm using the relative analysis and the fuzzy maths to identify the fault current and inrush current of power transformer. The relation between the new restraint principle and the harmonic restraint principle are discussed in detail. The simulation test showed that the method can identify the fault currents and inrush current of power transformer,Ccorrectly and made the protective relay operating relaibly.
出处
《江苏电机工程》
2000年第2期18-20,共3页
Jiangsu Electrical Engineering
关键词
变压器
差动保护
励磁涌流
相关分析法
transformer differential protection relative coefficient fuzzy coefficient
