On the Risk Evaluation of HV Line Protection Based on Markov Model

摘要：

　　It is a significant problem to evaluate the running protective relay devices.This paper proposes a novel risk evaluation method for HV line protection.Firstly,six states of the system are established.Considering the self-check of the protective relay,four risk indexes are derived.Then,according to the state division of the system,ten state Markov model is established and then the risk and unavailability indexes of the system can be calculated.Finally,based on some real grid data,the unavailability and risk indexes is analyzed under different maintenance cycles,failure-rates and self-check rates.The conclusion is drawn: the risk and unavailability has different changing trend with the maintenance cycle increasing; a smaller failure rate or a larger self-check rate can keep risk and unavailability at a lower level.

关键词： Protective relay Risk evaluation Reliability Markov model

作者: Ancheng XUE Lin LUO Qi JING Rui LIN Xiaoguai CAO Zhen SHAO Tianshu BI Shaofeng HUANG

作者单位: State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources,North China China Southern Power Grid Guangzhou EHV Bureau,Guangzhou 510000

会议类型: 国际会议

会议名称: The 33th Chinese Control Conference第33届中国控制会议

会议地点: 南京

会议语种:英文

页码: 6528-6532

在线出版日期: 2014-07-28（万方平台首次上网日期，不代表论文的发表时间）