考虑负荷重分配攻击和脆弱线路防御的发输电系统可靠性评估  

Reliability Evaluation of Power Generation and Transmission System Considering Load Redistribution Attack and Defense of Vulnerable Line

作　　者：陈凡[1,2] 史杰 刘海涛 王瑞驰 赵美莲 刘涤尘[3] CHEN Fan;SHI Jie;LIU Haitao;WANG Ruichi;ZHAO Meilian;LIU Dichen(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China;Jiangsu Collaborative Innovation Center for Smart Distribution Network,Nanjing 211167,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China)

机构地区：[1]南京工程学院电力工程学院,江苏省南京市211167 [2]江苏省配电网智能技术与装备协同创新中心,江苏省南京市211167 [3]武汉大学电气与自动化学院,湖北省武汉市430072

出　　处：《电力系统自动化》2022年第2期65-72,共8页Automation of Electric Power Systems

基　　金：江苏省自然科学基金资助项目(BK20210932)。

摘　　要：负荷重分配(LR)攻击是一种特殊的网络攻击形式,对LR攻击进行建模并研究其对电力系统运行的影响具有重要的现实意义。首先,对LR攻击过程进行了分析,并基于半马尔可夫链建立了LR攻击的随机过程模型;其次,对LR攻击作用下攻击者与调度员之间的交互作用过程进行分析,建立了考虑LR攻击的发输电系统负荷削减模型;然后,从保护关键量测数据的角度出发,提出了一种基于输电线路利用率的脆弱线路防御策略,并进一步提出了考虑LR攻击和脆弱线路防御的发输电系统可靠性评估算法;最后,以IEEE 14节点修改系统为例进行算例分析,验证了所提出的考虑LR攻击的发输电系统可靠性评估算法的正确性以及脆弱线路防御策略的有效性。Load redistribution(LR)attack is a special form of cyber-attack.It is of great practical significance to model the LR attack and study its influence on the power system operation.Firstly,the process of LR attack is analyzed,and the random process model of LR attack is established based on the semi-Markov chain.Secondly,the interaction process between the attacker and dispatcher under the LR attack is analyzed,and the load shedding model of the power generation and transmission system considering the LR attack is established.Then,a defense strategy for the vulnerable line based on the transmission line utilization rate is proposed from the perspective of protecting the critical measurement data,and a reliability evaluation algorithm of the power generation and transmission system considering the LR attack and defense of the vulnerable line is further proposed.Finally,the modified IEEE 14-bus system is taken as an example to verify correctness of the proposed reliability evaluation algorithm of the power generation and transmission system considering the LR attack and effectiveness of the defense strategy for the vulnerable line.

关 键 词：可靠性评估 负荷重分配攻击 脆弱线路防御 发输电系统 

分 类 号：TM732[电气工程—电力系统及自动化]