网络攻击场景下含分布式光伏配电网的脆弱性研究  

Research on vulnerability of distribution networks with distributed photovoltaic under cyber attacks

作　　者：李一诺 刘玮 魏兴慎 王琦[2] LI Yinuo;LIU Wei;WEI Xingshen;WANG Qi(School of Software Engineering,Southeast University,Nanjing 210096,China;School of Electrical Engineering,Southeast University,Nanjing 210096,China;Nanrui Group Company Limited(State Grid Electric Power Research Institute Company Limited),Nanjing 211106,China)

机构地区：[1]东南大学软件学院,南京210096 [2]东南大学电气工程学院,南京210096 [3]南瑞集团有限公司(国网电力科学研究院有限公司),南京211106

出　　处：《综合智慧能源》2024年第5期50-57,共8页Integrated Intelligent Energy

基　　金：国家电网有限公司科技项目(5700-202318304A-1-1-ZN)。

摘　　要：随着网络技术的高速发展,大量智能量测终端和通信设备广泛接入电力系统,为网络攻击引入了新的入侵途径,加剧了电力系统对网络攻击的暴露风险。为保障电力系统的安全运行,评估网络攻击下含分布式光伏的配电系统的脆弱性,首先从攻击者的视角构建了针对分布式光伏的数据篡改攻击模型描述网络攻击具体形态;其次,在攻击场景下,求解配电系统光伏出力缺失状态下的电力潮流修正方程,基于潮流灵敏度提出节点脆弱度表征配电系统的脆弱性;最后,通过仿真验证了含分布式光伏配电网脆弱性与攻击影响程度的相关性以及与拓扑和时序的相关性。研究结果可为电力系统网络安全防御者在网络攻击威胁下精准制定防御方案,合理分配防御资源提供参考。With the rapid development of network technologies,a large number of intelligent measurement terminals and communication devices are widely connected to power systems,introducing new intrusion paths for cyber attacks and intensifying the exposure risk of power systems to the attacks.To ensure the safe operation of power systems and evaluate the vulnerability of distribution systems with distributed photovoltaic under cyber attacks,a data tampering attack model for distributed photovoltaic is established from the perspective of attackers,describing the specific forms of cyber attacks.Then,in attack scenarios,the power flow correction equation for the distribution system suffering from photovoltaic load losses is solved,and the node vulnerability is proposed based on the sensitivity of power flow to characterize the vulnerability of the distribution system.Finally,the correlations between the vulnerability of a distribution network and the impact degree of an attack,the topology and time series are verified through a simulation test.The research results can provide references for power system cyber security defenders to accurately formulate defense plans and reasonably allocate defense resources under cyber attacks.

关 键 词：网络攻击 分布式光伏 配电网 脆弱性 电压灵敏度 

分 类 号：TM744[电气工程—电力系统及自动化]