广域测量系统通信主干网的风险评估  

Risk Assessment of Backbone Communication Network in WAMS

作　　者：彭静[1] 卢继平[1] 汪洋[1] 刘家伟 

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区400030 [2]重庆电力公司沙坪坝供电局,重庆市沙坪坝区400030

出　　处：《中国电机工程学报》2010年第4期84-90,共7页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973项目)(2004CB217908)~~

摘　　要：根据电力系统中广域测量系统(wide area measurement system,WAMS)通信主干网的自愈环形结构特点,以一个具代表性的4节点2纤双向通道环网为例,通过定性分析和定量计算相结合,提出了WAMS通信主干网的风险评估模型和计算方法。该模型将风险评估涉及的资产、威胁、脆弱点和风险影响4大要素有机融合。采用可靠性分析方法计算出风险事件发生的概率,借鉴层次分析法中构建比较判断矩阵实现风险影响值的量化计算,从而得出通信主干网的风险综合值。计算结果表明所提出的方法具有良好的实用性和可操作性,可用于后续的评估工作,并为电力系统制定安全保护策略提供了依据。A mathematical model for risk assessment to communication backbone networks （CBN） in wide area measurement system （WAMS） was proposed. Considering the self-healing and ring structure characteristics of CBN, this paper gave a theoretical analysis to the model based on a typical ring network with 4 nodes and 2 optic fibers and double-direction, dual-passage through integrating qualitative and quantitative analysis. This model combined the four main factors of risk assessment together： assets, threats, vulnerabilities and risk impact. In order to get the final comprehensive risk value, the risk events probability and the risk impact value were calculated by reliability analysis and a comparison matrix which is borrowed from analytic hierarchy process （AHP）, respectively. The results show that the method has a good operability and practicality, which can be used for follow-up assessment, and provides a basis to establish the security strategy for power systems.

关 键 词：广域测量系统 通信主干网 风险评估 可靠性 层次分析法 

分 类 号：TM73[电气工程—电力系统及自动化]