基于可靠性的广域保护信息传输路径重构熊小伏，吴玲燕(重庆大学输配.doc

基于的广域保护信息传输路径重构 熊小伏 (重庆大学输配电装备及系统安全与新技术国家重点实验室，重庆市 400030) 摘要：广域保护在电力系统安全、稳定运行中具有越来越重要的作用，而广域保护的实现依赖于广域信息的获取和通信系统的实时、可靠。广域保护通信网络单元失效将影响广域保护信息的正常可靠传输。基于智能电网自愈、重构的理念，提出了基于可靠性最高的广域保护信息传输路径重构方法。该重构方法以寻求满足广域保护延时要求的最可靠路径为路径寻优的最终目标，实现重构路径的快速有哪些信誉好的足球投注网站。算例分析表明：该方法原理简单、计算方便、结果准确，能明显提高广域保护信息传输可靠性。 关键词：广域保护；信息传输；网络单元失效；重构；可靠性最高 The Information Transmission Path Reconstruction of Wide-area Protection Based on Highest Reliability XIONG Xiao-fu，(State Key Laboratory of Power Transmission Equipment System Security and New Technology，Chongqing University，Chongqing 400030，China) ABSTRACT：Wide-area protection has become increasingly important role in power system security and stability，but the realization of wide-area protection depends on the receive of wide-area information，real-time and reliable of communication systems.The fault of wide-area protection communication unit will affect the normal and reliable transmission of wide-area protection information.Based on the concept of self-healing and reconstruction of smart grid，this paper presents information transmission path reconstruction of wide-area protection based on optimal path.The ultimate goal of the reconstruction is to search quickly the most reliable path which meet the delay requirements of wide-area protection.The results of case study show that the reconstruction method is simple and convenient.The results are exact and markedly improve the reliability of wide-area protection information transmission. KEY WORDS: Wide-area protection；information transmission；network unit fault；reconstruction； reliability 0 引言 广域保护是基于电力系统网络通信、多点信息综合判断同时实现继电保护和自动控制功能而构建的新型保护，对于电力系统安全、稳定运行具有越来越重要的作用[1-8]。广域保护的信息传输实时性和可靠性是广域保护的核心问题，而广域保护通信网络单元失效将影响广域保护信息的可靠、实时传输，甚至可能导致保护连锁跳闸引起大面积停电事故的发生[4,5]。基于智能电网自愈、重构的理念，广域保护信息传输路径失效后的快速重构是广域保护必不可少的手段[6,7]。 广域保护信息传输所依赖的电力专用通信网，其技术演进紧跟公网技术进步，但与公用通信网比较，其在服务对象、完成任务、设计思想、通信设备要求、网络结构、容量及可靠性等方面均有其特殊性[9-11]。电力通信网络由于承载了保护信号、安稳信号等重要电网业务，其信息传输可靠性要求有别于公用通信网，必须满足以下三个方面的要求：(1)满足各种电力业务对可靠性的要求；(2)正常情况下通信网络中的任意两个网络节点须保持至少两条独