Zhao Daduan, Li Yan, Cao Xiangyang, Sun Yue, Zhang Chenghui
IEEE Trans Cybern. 2025 Apr 18;PP. doi: 10.1109/TCYB.2025.3554751.
With the aim to solve the secondary control problems for DC microgrids with cyber-attacks and limited bandwidth in the communication network, this article proposed a unified distributed resilient control strategy to achieve simultaneously appropriate voltage restoration and optimal power allocation (economic dispatch) by integrating dynamic event-triggered mechanism (DETM). First, based on dynamic average consensus protocol (DACP) and taking the DETM into consideration, the voltage regulator with distributed average voltage estimator and the PI controller is designed. Meanwhile, in order to maintain the economic operation of the microgrids under cyber-attacks, the power regulator with distributed optimal power controller and the PI controller is designed. Then, the sufficient conditions of convergence and optimality for the proposed distributed resilient average voltage estimator and optimal power controller are demonstrated by using the Lyapunov stability principle and convex optimization analysis, respectively. To this end, several case studies are conducted to validate the effectiveness of the proposed control strategy for enhancing the security, robustness, adaptability and economy of DC microgrids.
为解决通信网络存在网络攻击和带宽受限情况下直流微电网的二次控制问题，本文提出一种统一的分布式弹性控制策略，通过集成动态事件触发机制（DETM）同时实现适当的电压恢复和最优功率分配（经济调度）。首先，基于动态平均一致性协议（DACP）并考虑DETM，设计了具有分布式平均电压估计器和PI控制器的电压调节器。同时，为在网络攻击下维持微电网的经济运行，设计了具有分布式最优功率控制器和PI控制器的功率调节器。然后，分别利用李雅普诺夫稳定性原理和凸优化分析证明了所提出的分布式弹性平均电压估计器和最优功率控制器的收敛性和最优性充分条件。为此，进行了若干案例研究，以验证所提出的控制策略对于增强直流微电网的安全性、鲁棒性、适应性和经济性的有效性。
