Relay Protection Action Evaluation Analysis And Research On Reliability

With the continuous development of the smart grid, fault information system for relay protection has been paid more and more attention. Firstly, this paper simply introduce the role and function of relay protection and fault information system. Then, a detailed description of relay action evaluation system based on forward reasoning is given, including the establishment of an expert system and the specific evaluation process. During the course of protection and breakers action evaluation, accurate fault location is the premise and basis of a reliable evaluation. Errors inevitably occur while the fault information is uploaded. For this reason, this paper adopts genetic algorithms to optimize the fault information to ensure accurate fault location in the event of an error message.This paper proposes comprehensive economic indicators. This indicator can assess reliability of protection system more fully.Finally, this paper presents a comprehensive evaluation RSR. This can make us more intuitively grasp the overall states of protection system stages of operation.