摘要
现有变电站自动化检修设备的继电保护可靠性研究方法很多,但其可靠性不准确,无法使变电站正常运行,减少损失。为此,进行变电站状态自动化检修设备继电保护可靠性研究。首先对继电保护系统可靠性指标进行分析,然后对继电保护系统可靠性指标影响因素进行分析,包括硬件失效因素、软件失效因素以及其他失效因素等,最后基于上述研究,构建故障树模型,进行继电保护可靠性定量、定性分析。实验结果表明:所研究方法得出的继电保护可靠性结果准确性更高,证明所研究的继电保护系统是可靠的,同时也证明了可靠性分析方法的有效性,可以有效降低变电站的损失。
There are many methods to study the reliability of relay protection in the existing substation automatic maintenance equipment,but its reliability is not accurate,which can not make the substation operate normally and reduce the loss.Therefore,the reliability of relay protection of substation state automatic maintenance equipment is studied.Firstly,the reliability index of relay protection system is analyzed,then the influencing factors of reliability index of relay protection system are analyzed,including hardware failure factors,software failure factors and other failure factors.Finally,based on the above research,the fault tree model is constructed and the reliability of relay protection is quantitatively and qualitatively analyzed.The experimental results show that the reliability results obtained by the research method are more accurate,and the reliability of the system is proved to be reliable,and the reliability analysis method is proved to be effective,which can effectively reduce the loss of substation.
作者
陈秀海
祁宏
吴钢
王倜
王进贤
CHEN Xiuhai;QI Hong;WU Gang;WANG Ti;WANG Jinxian(State Grid Beijing Haidian Power Supply Company,BeiJing 110108,China)
出处
《自动化与仪器仪表》
2021年第11期138-142,共5页
Automation & Instrumentation
基金
国家电网有限公司科技项目资助(5202041900BU)。
关键词
变电站
自动化检修设备
继电保护系统
可靠性分析
Substation
Automatic maintenance equipment
Relay protection system
Reliability analysis
