工程科学与技术2024，Vol.56Issue(3)：249-258,10.DOI:10.12454/j.jsuese.202200911
计及DoS攻击和通信时滞的电力系统负荷频率控制
Load Frequency Control in Power Systems Accounting for DoS Attacks and Communication Delays
摘要
Abstract
In response to the issues of time delays and DoS attacks in the communication networks of power system,this paper proposed a dis-crete load frequency control scheme based on sampling characteristics.Firstly,accounting for load fluctuations in the power system,this study quantified the impact of DoS attacks as the number of consecutive loss in sampling signals,within the framework of a state-space model for multi-area load frequency control system(LFC).Additionally,taking into consideration the communication delays and sampling characteristics of out-put signals in the network,an enhanced power system LFC model incorporating an output state feedback controller was established.Subsequently,based on this model,a stability criterion for the LFC system that meets a specifiedH∞performance index was proposed.This criterion utilizeed a bilaterally closed-loop Lyapunov functional and LMI(linear matrix inequality)techniques,incorporating variables such as the control command update period,the maximum number of consecutive sampling signal losses due to DoS attacks,communication delays,and theH∞performance index itself.Additionally,the design and solution methods for a discrete state output feedback LFC was presented.Finally,this paper validated the simulation results using both single-area and two-area LFC systems as case studies.Compared with the existing results,the proposed method could tolerate a larger communication delay and the results were less conservative under the premise of keeping the system asymptotically stable.It was concluded that the controller designed in this paper had elastic defense performance against DoS attack with certain energy limit on the basis of ensuring stable performance.Therefore,the effectiveness and superiority of this scheme were verified.关键词
时滞/DoS攻击/负荷频率控制方案/采样特性/Lyapunov泛函Key words
time delay/DoS attack/load frequency control scheme/sampling characteristics/Lyapunov functional分类
信息技术与安全科学引用本文复制引用
刘星月,田永强,施开波,周坤,唐琳..计及DoS攻击和通信时滞的电力系统负荷频率控制[J].工程科学与技术,2024,56(3):249-258,10.基金项目
国家自然科学基金项目(61703060 （）
12061088) （）
四川省科技计划基金项目(21YYJC0469) （21YYJC0469）
中国博士后基金项目(2020M683274 （）
2021T140092) （）
浙江省智能制造质量大数据溯源与应用重点实验室开放基金项目(ZNZZSZ-CJLU2022-06) （ZNZZSZ-CJLU2022-06）
