基于IEC61850的变电站自动化系统可靠性评估  

Reliability evaluation of substation automation system based on IEC61850

作　　者：杜双育[1] 王先培[1] 谢光彬 蔡涛[1] 张其林[1] 

机构地区：[1]武汉大学系统集成与故障诊断实验室,湖北武汉430079 [2]宜宾电业局,四川宜宾644002

出　　处：《电力系统保护与控制》2012年第5期32-36,41,共6页Power System Protection and Control

基　　金：国家自然科学基金资助项目(50677047);湖北省自然科学基金资助项目(2010CDZ051);湖北省教育厅基金资助项目(20092505)~~

摘　　要：基于IEC61850标准的变电站自动化系统支持功能自由分布,系统的可靠性与其功能分布方式密切相关。介绍了变电站自动化系统功能自由分布的实现原理,提出了基于IEC61850的变电站自动化系统可靠性评估方法,即基于IEC61850标准,将系统功能分解成由逻辑节点和逻辑连接构成的逻辑节点连接图,通过物理装置和通信链路的故障率,计算各逻辑节点和逻辑连接的故障率。在此基础上,根据系统功能的可靠性框图,计算系统功能的可用率,并以此评估系统的可靠性。以间隔联锁功能为例对方法进行详细说明并对其可行性进行了论证,为优化系统功能分布方式和提高系统可靠性提供指导依据。The substation automation system based on IEC61850 standard supports free distribution of functions and its reliability is closely related to the distribution mode of its functions. The realization principles of functions＇ free distribution are introduced and the method of reliability evaluation of substation automation system is proposed based on IEC61850. The system＇s functions are deposed into the connection diagram of logical nodes based on IEC61850 which consists of logical nodes and logical connections. The fault rates of logical nodes and logical connections are calculated based on the fault rates of physical devices and physical connections, then using fault tree analysis method to calculate the availability of system＇s functions and using it as the reliability index of system. Finally, the interval interlock function is taken as an example to introduce the method and confirm its feasibility which provides guidance to improve the distribution mode of system＇s functions and enhance the reliability of system.

关 键 词：IEC61 850 变电站自动化系统 逻辑节点 可靠性 可用率 

分 类 号：TM76[电气工程—电力系统及自动化] TM732