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基于动态故障树的变电站通信系统可靠性分析

, PP. 135-141

Keywords: 变电站,并行冗余协议,通信系统,可靠性,快速生成树协议,动态故障树

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Abstract:

通过分析并行冗余协议(parallelredundancyprotocol,PRP)、高可用无缝环(highavailabilityseamlessring,HSR)和快速生成树协议(rapidspanningtreeprotocol,RSTP)3种冗余协议的工作机制,提出一种定量评估变电站通信系统动态可靠性的分析方法,为设计基于IEC61850的变电站通信系统的组网方式提供参考。依据系统的可修复和冗余特性分析研究系统可靠性,采用动态故障树方法建立3种网络的可靠性模型,利用模块化分析思想将动态故障树分为静态子树和动态子树,静态子树采用二元决策图(binarydecisiondiagram,BDD)算法、动态子树采用Markov算法对模型进行计算分析。对3种可修网络系统的模型结构和可靠性指标的分析表明,在可修系统中,PRP网络在3种网络中具有最高的可靠性,但成本也最高。

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