Abstract: In order to achieve fast and accurate test results of relay protection information system terminal equipment, the intelligent test system of relay protection information system terminal equipment is designed. The terminal equipment data collected by the data acquisition module is transmitted to the data processing module through wireless mode; the interference data in the original data is removed by using signal processing algorithm to make it meet the requirements of the monitoring and early warning module; the real-time monitoring of the change of the operation state of the terminal equipment is realized, and the warning level information is sent out; the intelligent test module forms the terminal equipment data higher  than  monitoring and early warning indicators into recording data, uses the protection device and recording data to obtain the results of protection operation, completes the intelligent test of terminal  equipment by evaluating the results of operation behavior. The experimental results show that the system can realize the intelligent test of relay protection information system terminal equipment, improve the working efficiency of test terminal equipment and the economic benefits of power enterprises.

Key words: relay protection； terminal equipment； intelligent testing； data acquisition； monitoring and early warning； , data transfer