基于耗散性的积分滑模负荷频率控制——考虑扰动与拒绝服务攻击

The load frequency control (LFC) of modern power systems that tends to use open communication networks will be more vulnerable to cyber-attacks, as well as disturbances from renewable energy sources (RESs) and load side. Plus, the increasing scale of power systems makes the design of LFC schemes more difficult. In this paper, a dissipativity-based integral-sliding-mode LFC (DISMLFC) scheme is proposed for multi-area power systems under disturbances and denial-of-service (DoS) attacks. At first, the model of LFC with disturbances and the model of DoS attacks with frequency and duration are introduced. Then, with the help of the integral-sliding-mode control theory and the usage of dissipativity, the DISMLFC scheme is obtained. This scheme ensures the input-to-state practical stability of the LFC system, and improves the robustness of the system against disturbances and DoS attacks. Moreover, the design of the proposed scheme only requires to solve a simple Lyapunov equation, instead of solving the complex linear matrix inequalities in the previous method, which can effectively reduce the computational complexity. Finally, the effectiveness and advantages of the designed LFC scheme are verified by case studies based on a three-area power system and an IEEE 39-bus benchmark test system.