Research of auxiliary analysis function for digital relay protection test

In order to solve the common problems in digital relay protection test, this paper proposes a digital relay protection test auxiliary analysis function. This function is mainly used to analyze the abnormal situation that occurred during digital relay protection test, and reduce the processing time of abnormal situation, so as to improve the efficiency of digital relay protection test. SCD contains the configuration information of protection device, and the relay protection information can reflect the real-time state and operation state of the relay protection device. Therefore, SCD and relay protection information can be used as the information basis for analyzing testing problems. The proposed function is based on the standardization and unification of relay protection information. Through the analysis of SCD and relay protection information, this function can help testers find out the cause of abnormal situation and put forward some suggestions. The analysis of common problems in digital relay protection test shows that the proposed function can effectively assist testers to handle the abnormal situation during testing process.