线路旁代时高频保护与收发信机配合问题探讨

本文从新建线路保护的GXC-01光纤接口装置接入旁路保护WXB-11C装置的验收过程中模拟反向故障时异常的试验现象谈起,结合分析了省外某220kV线路在相邻线路发生故障,本侧开关旁路代时对侧高频保护发生误动作的原因。更进一步阐述了线路正常运行与旁路代时,保护装置与高频收发信机分别以闭锁式、允许式配合的问题。同时,针对保护与收发信机调试过程中的相关信号进行了分析,提出了总结与思考。

Discussion of Cooperation Problems about Carrier Current Protection and the Transceiver as Bypass Breaker Operating

Starting from the unusual appearance of the test when simulating reverse fault during the check of the connection between the new-built optical fiber connector GXC-01 and the bypass breaker protection WXB-11C.This paper analyses the reason for the opposite carrier current protection malfunction when there is a fault at the adjacent line,as bypass breaker operating.It also analyses the cooperation between the carrier current protection and the transceiver by permissive logic or blocking logic when normal operation and bypass breaker operation.The related signals from the debugging job is also discussed and summarized.