计及网络攻击和通信时滞的含新能源互联电力系统负荷频率控制  

Renewable Energy Interconnected Power System Load Frequency Control Under Network Attacks and Communication Time Delay

作　　者：米阳 杨梓帅 徐铭铭 周杰 韩云昊 MI Yang;YANG Zishuai;XU Mingming;ZHOU Jie;HAN Yunhao(College of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China;State Grid Henan Electric Power Research Institute,Zhengzhou 450006,China)

机构地区：[1]上海电力大学电气工程学院,上海市200090 [2]国网河南省电力公司电力科学研究院,郑州市450006

出　　处：《电力建设》2025年第2期125-136,共12页Electric Power Construction

基　　金：国家自然科学基金项目(52477107);上海市自然科学基金(22ZR1425500)。

摘　　要：针对新能源电力系统中的周期性拒绝服务(denial-of-service, DoS)攻击和通信时滞,提出一种基于事件触发的滑模负荷频率控制(load frequency control, LFC)策略,以解决控制信号丢失和频率偏差增大的问题。首先建立网络攻击和通信时滞下的新能源互联电力系统LFC模型,采用广义互相关(generalized cross correlation, GCC)估计在线检测系统时滞,通过滑模控制算法降低时滞的影响并增强系统的鲁棒性。其次,基于周期性事件触发机制设计滑模控制策略,根据划分的时间间隔确定采样状态来减少网络中的数据交换量,以应对周期性DoS攻击。最后,在Matlab/Simulink中进行仿真实验分析,仿真结果验证了所设计的控制策略能够有效克服网络攻击和通信时滞的影响,提高了新能源互联电力系统的频率稳定性。To address the problems of control signal loss and increased frequency deviation,an event-triggering load frequency control(LFC)strategy was proposed to address periodic denial of service(DoS)attacks and time delays in new energy interconnected power systems.First,a new energy-interconnected power system LFC model under network attacks and communication time delay was established.Generalized cross-correlation(GCC)estimation was used to detect online system time delays.A sliding mode control algorithm was used to reduce the impact of time delay and enhance the robustness of the system.Second,an improved periodic event-triggering mechanism was proposed based on the traditional sliding mode control,which determined the sampling state based on the divided time interval to reduce the amount of data exchange in the network and solve periodic DoS attacks.Finally,simulation experiments were conducted under different scenarios using MATLAB/Simulink to demonstrate that the proposed strategy can effectively overcome the problem of increased frequency deviations caused by network attacks and communication delays.This can also improve the frequency stability of new energy-interconnected power systems.

关 键 词：新能源互联电力系统 网络攻击 通信时滞 事件触发 滑模负荷频率控制 

分 类 号：TM73[电气工程—电力系统及自动化]