基于故障率分析的继电保护系统状态检修策略  

A condition-based maintenance strategy for a relay protection system based on failure probability analysis

作　　者：叶远波 谢民 陈晓东 项忠华 YE Yuanbo;XIE Min;CHEN Xiaodong;XIANG Zhonghua(Anhui Electrical Power Dispatch Centre,Hefei 230022,China;State Grid Anhui Xuancheng Electrical Power Company,Xuancheng 242000,China)

机构地区：[1]安徽电力调度控制中心,安徽合肥230022 [2]国网安徽省宣城供电公司,安徽宣城242000

出　　处：《电力系统保护与控制》2021年第7期167-173,共7页Power System Protection and Control

基　　金：国家电网有限公司科技项目资助(521200190081)。

摘　　要：为了准确计算继电保护系统状态检修的具体检修周期,方便运维人员安排检修计划,提出了一种基于故障率分析的继电保护系统状态检修策略。根据历史数据拟合其基础故障率模型,分别考虑中长期和短期等因素的影响,形成修正后的继电保护系统实际故障率模型。在此基础上,结合工程应用经验和相关导则,通过设立累积故障率门槛值,计算具体的检修周期。算例结果表明,所提出的状态检修策略可以为运维人员提供具体的检修周期,提高了检修的工程应用性。To accurately calculate the condition-based maintenance cycle for a protection relay system,and to make it convenient for the operational staff to prepare the maintenance schedules,a new condition-based maintenance strategy is developed based on failure probability analysis.Given the historical failure data,a fitted model is established.By considering the influence of short-and long-term factors,a real amending failure probability model for a protection relay system is proposed.Then,in accordance with engineering experience and some related guides,the maintenance cycle can be calculated by setting the accumulated failure probability threshold.The simulation results testify that the proposed maintenance strategy can provide a more practical maintenance cycle for operational staff and increase the engineering applicability.

关 键 词：继电保护系统 故障率模型 模型修正 累积故障率 状态检修策略 

分 类 号：TM77[电气工程—电力系统及自动化]