基于改进动态故障树的电力系统广域保护通信系统可靠性分析方法  

A reliability analysis method power system wide area protection communication system based on an improved dynamic fault tree

作　　者：魏勇 崔俊彬 刘辛彤 刘昕 胡家灵 陈嵘 WEI Yong;CUIJunbin;LIU Xintong;LIU Xin;HU Jialing;CHEN Rong(Information&Telecommunication Branch,State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050000,China;GHT Co.,Ltd.,Guangzhou 510663,China)

机构地区：[1]国网河北省电力有限公司信息通信分公司,河北石家庄050000 [2]广州广哈通信股份有限公司,广东广州510663

出　　处：《电力系统保护与控制》2021年第23期171-177,共7页Power System Protection and Control

基　　金：河北省自然科学基金项目资助(F2015502047)。

摘　　要：针对广域保护系统对通信网络实时性和可靠性的高要求,提出了一种将动态故障树和蒙特卡洛算法相结合的广域保护通信系统可靠性分析方法。利用扩展的动态故障树建立了系统模型,并采用序贯蒙特卡洛方法对系统的可靠性进行分析计算。通过仿真对系统的可靠性和薄弱环节等进行分析。仿真结果表明,所提出的可靠性分析方法模型简单、适用性强,能够快速发现影响系统可靠性的因素,便于快速诊断和维护,提高了整个网络的可靠性。There are demanding requirements for real-time activity and reliability of a communication network for a wide area protection system.Thus a reliability analysis method for a wide area protection communication system based on a dynamic fault tree and a Monte Carlo algorithm is proposed.An extended dynamic fault tree is used to establish the system model,and the sequential Monte Carlo method is used to analyze and calculate the reliability of the system.The reliability and weak links of the system are analyzed by simulation.The results show that the proposed reliability analysis method is simple and applicable.It can quickly find the factors affecting system reliability,facilitate rapid diagnosis and maintenance,and improve the reliability of the whole network.

关 键 词：广域保护系统 通信网络 动态故障树 蒙特卡洛算法 可靠性分析 

分 类 号：TM732[电气工程—电力系统及自动化]