面向交直流混联电网的虚假数据注入攻击策略优化  

Strategy optimization of false data injection attack on AC-DC hybrid systems

作　　者：谢云云[1] 严欣腾 燕子敖 桑梓 袁晓舒 XIE Yunyun;YAN Xinteng;YAN Zi′ao;SANG Zi;YUAN Xiaoshu(School of Automation,Nanjing University of Technology,Nanjing 210094,China;China Railway Shanghai Design Institute Group Co.,Ltd.,Shanghai 200072,China;DEC Academy of Science and Technology Co.,Ltd.,Chengdu 611731,China)

机构地区：[1]南京理工大学自动化学院,江苏南京210094 [2]中铁上海设计院集团有限公司,上海200072 [3]东方电气集团科学技术研究院有限公司,四川成都611731

出　　处：《电力工程技术》2023年第4期94-101,共8页Electric Power Engineering Technology

基　　金：国家自然科学基金资助项目(52177090)。

摘　　要：虚假数据注入(false data injection,FDI)攻击是对电力系统运行影响较为严重的一种攻击。目前已有对交直流混联电网的FDI攻击方法的研究,但仍缺乏对交直流混联电网攻击策略的优化研究。为此,文中提出了面向交直流混联电网的FDI攻击策略优化方法。首先,建立以FDI攻击损失最大为目标的双层优化模型,上层模型以电力系统经济损失最大为目标对FDI攻击策略进行优化;下层模型以发电机出力调整量和切负荷量最小为目标计算FDI攻击下的最大经济损失,考虑交直流混联电网安全约束和换相失败风险。然后,采用遗传算法对优化模型进行求解,生成最优攻击策略。最后,以改进的IEEE 14节点系统为例验证了模型的有效性。仿真结果表明,优化后的攻击策略能够显著提高安全约束经济调度(security constrained economic dispatch,SCED)的运行成本。False data injection(FDI)attack is one of the attacks that can seriously affect the operation of power systems.Some studies have focused on the cyber-attack methods of AC-DC hybrid systems.However,few studies pay their efforts on the optimization of FDI attack on AC-DC hybrid systems.Therefore,an FDI attack strategy optimization method for AC-DC hybrid systems is proposed in the paper.Firstly,a two-layer optimization model with the objective of maximizing the loss of FDI attacks is established.In the upper model,the attacker launches FDI attack on the measuring system to find the optimal attack strategy to maximize the economic loss of the power system.The lower layer model calculates the maximum economic loss under a FDI attack with the objective of minimizing the generator output adjustment and load shedding,considering the security constraint of AD-DC hybrid system and the risk of commutate failure of DC converter station.Then,the two-layer optimization model is solved by the genetic algorithm to generate the optimal attack strategy.Finally,the improved IEEE 14-bus system is taken as an example to verify the effectiveness of the model.Simulation results show that the attack strategy optimized by the proposed method can effectively improve the cost of security constrained economic dispatch(SCED).

关 键 词：交直流混联电网 虚假数据注入(FDI)攻击 换相失败 遗传算法 优化模型 安全约束经济调度(SCED) 

分 类 号：TM743[电气工程—电力系统及自动化]