Application Research of Microcomputer Relay Protection in Power System Analysis System

According to the requirements and characteristics of performance test in the process of research and development of relay protection device, a general automatic test system for relay protection device is introduced. The system adopts distributed architecture and modular design idea, and uses Python language to construct real-time test script, which can realize closed-loop automatic test and regression test of protection device. A PC controlled process bus adapter is designed to solve the communication problem between devices with heterogeneous communication ports. Finally, taking GOOSE and SMV message transmission relay protection instruction as an example, the application of IEC61850 on the experimental platform is introduced. This paper provides a test flow of standard language, which promotes the safe and stable operation of microcomputer relay protection device.