电力系统及其自动化学报2017，Vol.29Issue(1)：69-77,9.DOI:10.3969/j.issn.1003-8930.2017.01.012
保护系统失效率计算新方法
A Novel Estimation Method for Failure Rate of Protection System
摘要
Abstract
Through combining statistics and state scoring strategy,this paper presents a calculation method for the fail⁃ure rate of protection system based on system information and operation information. First,with confidence limit and nonparametric kernel density estimation,the calculation model is established based on alarm information of protection system and component according to different types of data. Then,through the construction of state scoring method and failure rate transformation,operation failure rate of each component is obtained. The comprehensive failure rate of each component is further obtained by weighting statistical failure rate and operation failure rate,and the comprehensive fail⁃ure rate of protection system is finally calculated by summing the comprehensive failure rate of all components. Since the operation information can reflect the real-time change of system failure,the combination of statistical failure rate and operation rate enables a higher reliability,which overcomes the difficulty in reliability analysis with failure data of low reliability. An example demonstrates the effectiveness of the proposed method.关键词
保护系统/失效率/保护信息系统/告警信息Key words
protection system/failure rate/protection information system/alarm information分类
信息技术与安全科学引用本文复制引用
陶祥鹏,么莉,林济铿,叶剑华,雷林绪,孙义豪..保护系统失效率计算新方法[J].电力系统及其自动化学报,2017,29(1):69-77,9.基金项目
国家电网公司总部科技项目新一代智能变电站保护、控制及通信技术实用化研究 （）
