摘要
提出了一种基于输电线路分布式行波检测装置的故障定位方法。利用沿线分布安装的两套基于Ro-gowski线圈的行波检测装置,采集高频故障行波,运用相模变换和小波变换模极大值法检测线模行波波头,准确定位波头到达时间。各装置通过无线通信网络将波头到达时间回传主站,主站综合利用不同的波头时差信息,在线测量实时行波波速,可精确定位单条输电线路的故障。仿真结果表明,该方法具有较高的测距精度和可靠性。
A fault location method is proposed based on distributed traveling wave detectors of transmission line. With two sets of devices on high voltage transmission line based on Rogowski coil, high-frequency fault traveling wave could be measured. Application of phase-mode transformation and maximum technique of wave- let transformation modulus could help detecting the wave heads of aerial mode traveling wave and also acquiring their accurate arrival time. These time information would be uploaded to master station via wireless communi- cation network. With the different time delay information, the master station would measure the on-line trave- ling wave velocity and accomplish accurate fault location for single transmission line. The high precision and reliability of the method are proved by the simulation results.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2012年第3期134-138,共5页
Proceedings of the CSU-EPSA
关键词
输电线路
故障定位
分布式
行波
线模
transmission line
fault location
distribution
traveling wave
aerial mode
