Fault Tracking Method for Relay Protection Devices

A method of fault tracking for relay protection devices is presented in this paper. Fault means that after the failure devices, anomalies and warning information are obtained through data-mining technology, then, algorithm used to find cause failure. Let us take microcomputer as an example: Firstly, common symptoms prior probability causes can be collected empirical field data. Then, concept event set proposed; thus, created. According causal relationship between failure, reasoning chain corresponding Bayesian network model built. backward continue analysis devices. Since data modeling all from statistics, has strong applicability represents a simple reliable timely determination elimination power system.