基于事件触发和网络攻击的负荷频率控制电力系统H_∞滤波器设计  

Event-based H_∞ filter design for load-frequency control systems under cyber-attacks

作　　者：刘金良[1,2] 顾媛媛 费树岷 Jinliang LIU;Yuanyuan GU;Shumin FEI(College of Information Engineering,Nanjing University of Finance and Economics,Nanjing 210023,China;Collaborative Innovation Center for Modern Grain Circulation and Safety,Nanjing 210023,China;School of Automation,Southeast University,Nanjing 210096,China)

机构地区：[1]南京财经大学信息工程学院,南京210023 [2]江苏省现代粮食流通与安全协同创新中心,南京210023 [3]东南大学自动化学院,南京210096

出　　处：《中国科学：信息科学》2018年第10期1348-1363,共16页Scientia Sinica(Informationis)

基　　金：国家自然科学基金(批准号:61403185);江苏省自然科学基金(批准号:BK20171481);江苏省属高校自然科学研究重大项目(批准号:15KJA120001);江苏高校优势学科建设工程资助项目(PAPD)资助

摘　　要：本文研究了基于事件触发和网络攻击的负荷频率控制电力系统H_∞滤波器设计问题.为了节约网络传输带宽资源,本文引入事件触发机制降低负荷频率控制电力系统测量输出的传输量.考虑网络环境下随机网络攻击的影响,建立基于事件触发和网络攻击的负荷频率控制电力系统H_∞滤波误差模型.基于此滤波误差模型,利用Lyapunov稳定性理论和线性矩阵不等式技术分别给出了负荷频率控制电力系统均方渐近稳定的充分性条件和H_∞滤波器设计方法,最后通过仿真算例验证本文所提H_∞滤波器设计方法的有效性.This work investigated the design of an event-based H∞ filter for a class of load-frequency control systems under cyber-attacks. An event-triggered communication scheme was introduced to save the resources of limited network bandwidth by reducing the measurement output transmitted from the load-frequency control system. This model was established for the power systems by considering the stochastic cyber-attacks that exist during the transmission process. Sufficient conditions that guaranteed the stability of the load-frequency control system were obtained with Lyapunov stability theory on the basis of the established model. The design approach of H∞ filter was established by utilizing the linear matrix inequality technique. Finally; an application of the proposed approach was demonstrated.

关 键 词：电力系统 事件触发 网络攻击 H∞滤波 网络化控制系统 

分 类 号：TM761[电气工程—电力系统及自动化]