基于PRONY法的超高压线路单相自适应重合闸故障性质识别新方法  

A New Method of Fault Identification for Single-phase Adaptive Reclosure in EHV Transmission Lines Based on PRONY

作　　者：张宇辉[1] 武东斌 王劼妍 孙玉成[1] 李秋晨[1] 

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012

出　　处：《东北电力大学学报》2016年第3期7-10,共4页Journal of Northeast Electric Power University

摘　　要：为解决带并联电抗器超高压输电线路中自动重合闸盲目重合及永久性故障问题,针对瞬时性故障时恢复电压的拍频现象进行研究,发现其恢复电压中除工频频率外还存在位于30-45 Hz之间的频率。根据该频率特性,提出了基于PRONY算法的超高压单相自适应重合闸故障性质识别判据。利用PRONY算法计算恢复电压信号频率,快速准确识别瞬时性故障与永久性故障。仿真及实测结果验证了判据的有效性和准确性。In order to solve the problem of the permanent failure of the automatic coincidence gate in the EHV transmission line with shunt reactor,the frequency of the frequency of the voltage in the recovery voltage is found to exist in the frequency of 30-45 Hz.According to the characteristic of the frequency,the characteristics of the fault characteristics of the EHV single phase adaptive based on the PRONY algorithm are proposed.Using the PRONY algorithm to calculate the frequency of the recovery voltage signal,so as to quickly and accurately identify the transient faults and permanent faults.Simulation and experimental results verify the validity and accuracy of the criteria.

关 键 词：超高压输电线路 单相自适应重合闸 恢复电压 瞬时性故障 

分 类 号：TM77[电气工程—电力系统及自动化]