考虑通信拓扑切换的微电网有限时间分布式二级控制

孤岛微电网在运行过程中对其输出电压、频率控制有较高的实时性要求。考虑孤岛微电网运行过程中易受负载投切、通信拓扑切换等多种干扰的影响，提出了一种改进的考虑通信拓扑切换的微电网有限时间分布式二级控制方法，实现孤岛微电网输出电压、频率的有限时间调节控制。首先，在传统的有限时间控制算法中加入一项幂指数为1的跟踪误差控制项，构建孤岛微电网有限时间分布式一致性电压、频率控制算法，并且分别建立闭环随机系统模型。其次，通过Lyapunov稳定性判定方法验证所提方法的稳定性，并计算出有限时间上界表达式。最后，在Matlab/Simulink上通过仿真验证了所提控制方法的有效性。

Distributed finite-time secondary control of a microgrid with communication topology switching

Output voltage and frequency control in an islanded microgrid operation has high real-time performance requirements. Considering the impacts of load switching, communication topology switching, and other disturbances for an islanded microgrid, an improved microgrid distributed finite-time secondary control method with communication topology switching is proposed. This can realize finite-time output voltage and frequency regulation. First, by adding a tracking control error term with a power index 1 to the original finite-time control method, the finite-time voltage and frequency consensus algorithms are formulated, and corresponding stochastic closed-loop models are established respectively. Second, a Lyapunov analysis method is presented to verify the stability of the proposed method, and the finite-time upper bound expression is also derived. Finally, the effectiveness of the proposed control is verified by simulation experiments on Matlab/Simulink.