Research on Remote Operation Automatic Test of Relay Protection Based on MMS Communication Protocol Engine Technology

With the gradual maturity of the comprehensive construction of smart grid and the integration of remote control, the State Grid Corporation of China has put forward new requirements for remote operation of relay protection. This article summarizes the meaning, general principles, system architecture and technical requirements of the remote operation of the relay protection. Then it designs a relay protection remote operation test scheme, builds a library of relay protection device fixed value remote control, soft pressure plate remote control and communication performance test cases. Finally it develops an automatic relay protection remote operation test system based on MMS communication protocol engine technology, which is applied to the professional testing of relay protection devices of the State Grid Corporation. The system has realized the “double confirmation” of remote modification of relay protection devices, solved the problems of low testing efficiency and inconsistent test data format, and ensured the smooth implementation of remote regulation and control integration and unattended substations.