时钟管理系统中继电保护B码对时研究

继电保护B码对时在智能变电站时钟管理中有着十分重要的作用,文章分析了时钟管理系统中继电保护B码对时的应用,结合高精度继电保护测试仪与GPS时间同步系统,讲述了一套全面测试继电保护装置B码对时的方案。利用继电保护测试仪回放B码脉冲波形给继电保护装置实现其B码对时,在回放时通过修改B码脉冲的部分码元模拟各种B码异常,全面验证继电保护装置B码对时的处理逻辑;通过GPS时间同步系统对继电保护装置施加B码对时信号进行长时间拷机,验证继电保护装置B码对时处理稳定性与可靠性。该方案对继电保护装置B码对时的测试与研发有一定的参考价值。

Testing Research of IRIG-B time relay protection codes

Relay protection code when B has a very important role in smart substation clock management role, the paper analyzes the application of relay protection in the B code time, combined CMC256-6 tester and ZH-503 time synchronization system, about a comprehensive testing program of relay protection IRIG-B time code on. Through CMC256-6 tester simulates B code pulse waveform playback device to the protective device to achieve B code, during playback by modifying the pulse of each code element B code to simulate a variety of abnormal B code, comprehensive verification code time protection device B processing logic, and for a long time B code pager to protection by ZH-503 time synchronization system, verify protection device B code when dealing with stability and reliability. The program for testing and development of relay protection B code when a certain reference value.