网络攻击下直流微电网系统的事件触发滑模控制  

Event-triggered sliding mode control of direct-current microgrid system under network attack

作　　者：刘永慧 卢艳杰 LIU Yonghui;LU Yanjie(School of Intelligent Manufacturing and Control Engineering,Shanghai Polytechnic University,Shanghai 201209,China;School of Electrical Engineering,Shanghai DianJi University,Shanghai 201306,China)

机构地区：[1]上海第二工业大学智能制造与控制工程学院,上海201209 [2]上海电机学院电气学院,上海201306

出　　处：《电力科学与技术学报》2024年第6期212-221,共10页Journal of Electric Power Science And Technology

基　　金：国家自然科学基金(61803253)。

摘　　要：采用基于事件触发的固定时间滑模控制方法,研究了虚假数据注入攻击下直流微电网系统的直流母线电压控制。首先,建立虚假数据注入攻击下直流微电网系统的数学模型;其次,为节省网络资源,在传感器-观测器通道和观测器-控制器通道引入事件触发机制;然后,考虑系统恒功率负载扰动和虚假数据注入攻击引起的系统电流难以准确测量的问题,构造了状态观测器,并设计基于观测器的固定时间滑模控制器,得到系统收敛的时间上界;最后,以含有2个恒功率负载和1个储能单元的直流微电网系统为例进行仿真。仿真结果表明,所提控制方法能够有效抑制恒功率负载扰动和虚假数据注入攻击对直流母线电压造成的影响,同时还能有效节省网络资源。This paper studies the direct-current bus voltage control of direct-current microgrid systems under false data injection attacks based on event-triggered fixed-time sliding mode control.Firstly,the mathematical model of the direct-current microgrid system under false data injection attacks is established.Secondly,to save network resources,event-triggered mechanisms are introduced in the sensor-to-observer channel and observer-to-controller channel.Thirdly,since the system current is difficult to be accurately measured due to the constant power load disturbance and false data injection attack,a state observer is designed.A fixed-time sliding mode controller based on the observer is designed,and the upper bound of the system convergence time is obtained.Finally,a direct-current microgrid system with two constant power loads and an energy storage unit is taken as an example for simulation.The results that the proposed control method can effectively resist the influence of constant power load disturbances and false data injection attacks on the direct-current bus voltage and save network resources effectively.

关 键 词：直流微电网系统 虚假数据注入攻击 恒功率负载 事件触发 固定时间滑模控制 

分 类 号：TM711[电气工程—电力系统及自动化]