基于一种改进型事件触发传输机制的网络欺骗性攻击下的电力系统负荷频率控制  

Power system load frequency control under network deceptive attacks based on an improved event-triggered transmission mechanism

作　　者：刘世良 裴生雷[2] LIU Shiliang;PEI Shenglei(State Grid Qinghai Electric Power Company Information Communication Company,Xining 810000,China;School of Physics&Electronic Information Engineering,Qinghai Minzu University,Xining 810007,China)

机构地区：[1]国网青海省电力公司信息通信公司,西宁810000 [2]青海民族大学物理与电子信息工程学院,西宁810007

出　　处：《中南民族大学学报（自然科学版）》2023年第3期365-372,共8页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：青海省应用基础研究资助项目(2019-ZJ-7017)。

摘　　要：研究了网络攻击下的电力系统事件触发负荷频率控制问题.为了减少网络中的非必要资源浪费,提出了一种新的事件触发传输机制.与一般的事件触发机制相比,这种事件触发传输机制利用了历史信号数据信息.结合电力系统网络环境中所存在的网络攻击,建立了一种广义的电力系统状态空间系统模型.运用李雅普诺夫稳定性定理,通过构造一种依赖于系统状态的分段李雅普诺夫泛函,并结合积分不等式,推导出能够保证网络攻击下的电力系统均方渐近稳定性定理,该定理既能获得负荷频率控制器增益,又能得出事件触发参数.最后,在仿真分析部分,通过考虑电力系统网络中有无攻击的两种情况去说明了文中所提出的方法的有效性与优越性.The power system event-triggered load frequency control problem under network attacks are studied.In order to reduce the waste of unnecessary resources in the network,a new event-triggered transmission mechanism is proposed.Compared with the general event trigger mechanism,the event trigger transmission mechanism utilizes historical signal data information.Combined with the network attacks existing in the power system network environment,a generalized power system state space system model is established.Using the Lyapunov stability theorem,by constructing a piecewise Lyapunov functional that depends on the state of the system,combined with the integral inequality,derives the theorem that can guarantee the mean square asymptotic stability of the power system under cyber attacks.The theorem can not only obtain the load frequency controller gain,but also the event trigger parameters.Finally,in the simulation analysis part,the effectiveness and superiority of the method proposed in this paper are illustrated by considering two situations of whether there is an attack in the power system network.

关 键 词：电力系统 网络攻击 负荷频率控制 李雅普诺夫泛函 稳定性 

分 类 号：TM743[电气工程—电力系统及自动化]