GPS在高频保护试验中的应用

Application of GPS in the High-frequency Protection Testing

常规的继电保护试验只能模拟线路单侧的故障行为,而不能在一条线路的两端同时模拟所要求的各类故障。对高频保护,过去只是分别对保护装置进行常规试验,未进行两侧保护装置同时联调,不能模拟故障的真实情况。提出的一种基于GPS(全球卫星定位系统)的高频保护试验方法,使在线路两端同时向各自的保护加入模拟区内或区外的各种类型故障量,使模拟线路故障真实情况成为可能,这为在基建安装、定检调试和事故调查中,更加全面地检验线路两侧的高频保护奠定了基础。

Conventional relay protection test can only simulate the fault behavior of unilateral line, can not simulate various fault behaviors on the two ends of a line at the same time. In the past, we only did some conventional tests for protection device about high frequency protection, did not do some conventional tests on the two ends of the line at the same time, can not simulate the real situation of fault behaviors. This paper presents a test method which is base on the GPS about high frequency protection base on the GPS, it can send various types of faults to the protection module of itself on the two ends of the line, make simulating the real fault of the line possible, it lays the foundation of high frequency protection for Checking the line more comprehensive in the installation,debugging and accident investigation.