基于IEC 61850的变电站自动化系统安全风险评估  

Security Risk Assessment of the IEC61850-based Substation Automation System

作　　者：郭创新[1] 俞斌[1] 郭嘉[1] 温柏坚 张金江[1] 张理[1] 陆海波[1] 李波 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027 [2]广东省电力调度控制中心,广东省广州市5106003

出　　处：《中国电机工程学报》2014年第4期685-694,共10页Proceedings of the CSEE

基　　金：国家自然科学基金资助项目(51177143);国家重点基础研究计划(973计划)(2013CB228202);浙江省自然科学基金资助项目(LZ12E07002)~~

摘　　要：基于IEC 61850的变电站自动化系统(substation automation system,SAS)是SAS的发展方向。变电站安全问题日益突出,对SAS开展安全风险评估十分必要。提出了基于功能分解的SAS安全风险评估方法,依据IEC 61850建立基于功能分解的安全风险评估模型,对SAS系统和功能进行数学语言描述,将SAS安全风险划分为"系统风险"和"功能风险"。给出了功能失效概率计算方法,并引入逻辑连接价值、逻辑节点价值和功能价值概念以度量功能失效后果损失。建立了功能风险等级9级评定方法和基于层次分析法的系统风险综合方法。最后以T1-1型变电站SAS为例验证了方法的可行性和适用性。Substation automation system （SAS） based on IEC61850 is the development direction of SAS. The security issues of the SAS have become increasingly prominent, so it is meaningful to carry out security risk assessment for the SAS. This paper proposed a methodology for the security risk assessment of the SAS. The function-based model （FBM） was proposed according to IEC 61850, by which the SAS could be decomposed into functions and described in mathematical language, and the security risk of the SAS was divided into“system risk” and “function risk”. Secondly, a method for calculating the function failure probability was presented. And concepts, such as logical connection value, logical node value and function value, were defined to measure the loss of function failure. A 9-level risk assessment criteria and a system risk integration method based on analytic hierarchy process were established. Taking T1-1 substation SAS system as an example, the feasibility and applicability of the proposed method was verified.

关 键 词：电力系统 IEC 61850 变电站自动化系统 安全风险评估 基于功能的模型 功能树 功能图 

分 类 号：TM73[电气工程—电力系统及自动化]