Ning Boda, Han Qing-Long, Ding Lei
IEEE Trans Cybern. 2021 Aug;51(8):3988-3999. doi: 10.1109/TCYB.2020.3003690. Epub 2021 Aug 4.
This article is concerned with the distributed secondary frequency and voltage control for islanded microgrids. First, the distributed secondary control problem is formulated by taking both communication delays and switching topologies into account. Second, by using an Artstein model reduction method, a novel delay-compensated distributed control scheme is proposed to restore frequencies of each distributed generator (DG) to a reference level in finite time, while achieving active power sharing in prescribed finite-time regardless of initial deviations generated from primary control. Third, a distributed finite-time controller is developed to regulate voltages of all DGs to a reference level. Fourth, the proposed idea is also applied to deal with the finite-time consensus for first-order multiagent systems. Finally, case studies are carried out, demonstrating the effectiveness, the robustness against load changes, and the plug-and-play capability of the proposed controllers.
本文关注孤岛微电网的分布式二次频率和电压控制。首先，通过考虑通信延迟和切换拓扑结构来阐述分布式二次控制问题。其次，利用阿特斯坦模型降阶方法，提出一种新颖的延迟补偿分布式控制方案，以在有限时间内将每个分布式发电机（DG）的频率恢复到参考水平，同时无论一次控制产生的初始偏差如何，都能在规定的有限时间内实现有功功率共享。第三，开发一种分布式有限时间控制器，将所有DG的电压调节到参考水平。第四，所提出的思想也应用于处理一阶多智能体系统的有限时间一致性问题。最后，进行了案例研究，证明了所提出控制器的有效性、对负载变化的鲁棒性以及即插即用能力。
