电网机械支撑部件系统运行风险评估方法  

Risk assessment method of mechanical supporting system for power grids

作　　者：吴洪亮[1] 丁辉[1] 朱成丽[1] 窦洪[2] 

机构地区：[1]武汉大学动力与机械学院,湖北武汉430072 [2]广东电网公司电力科学研究院,广东广州510080

出　　处：《武汉大学学报（工学版）》2014年第5期690-695,702,共7页Engineering Journal of Wuhan University

基　　金：中央高校基本科研业务费专项资金资助(编号:274717);广东电网公司科技项目(编号:K-GD2012-386)

摘　　要：针对电网部件的安全性分析,提出了基于材料失效机理的电网机械支撑部件系统运行风险评估方法(简称MSSFM方法),并从模型基础和范畴属性的层面分析了该方法的优势所在.给出了MSSFM方法的架构及其各模块的任务和功能;建立了电网机械支撑部件系统分类库、各部件失效故障树及其底事件库、以及部件系统风险概率的布尔合成方法.以一起耐张线夹接触劣化的风险概率评估实例,为前端失效分析与后端风险管理的有效联通提供了参考.结果表明,提出的MSSFM方法可以有效实现电网机械支撑部件系统运行风险评估.A risk assessment method of mechanical supporting system in power grids based on the materials failure mechanism（MSSFM method）,is proposed.The advantages of MSSFM method is analyzed from the aspects of model basis and category attributes.The step task and function in each module of the architecture of MSSFM method is presented.And the classification library of mechanical supporting system,failure fault trees and basic event of each component,Boolean synthesis method of system risk probability are established.The two categories,failure analysis of components and risk management of components system,are bridged effectively through a risk assessment example of a strain clamp contact deteriorating failure event.The results show that the risk assessment of mechanical supporting system for power grids can be achieved by the MSSFM method.

关 键 词：电网机械支撑部件系统 失效机理 MSSFM方法 特征参量 失效底事件 风险评估 

分 类 号：TM726[电气工程—电力系统及自动化]