Truck-mounted mobile emergency resources (MERs) play a significant role in microgrid formation and regulation for power system resilience enhancement. This paper proposes a distributed fixed-time secondary control (DFSC) scheme to regulate the frequency and active power sharing in islanded microgrids with MERs. The proposed DFSC scheme is designed based on a general directed communication graph which considers MER characteristics (e.g., mobility, flexibility, and potential cyber threats). Each DER receives data from its neighbors through directional communication links. The proposed pinning control strategy selects only a small number of DERs for pinning, which have access to the reference frequency information and would guide the operation of remaining local DERs and MERs. In addition, the guaranteed convergence time is determined by control parameters and communication graph without applying the initial operation states. The paper demonstrates that the desired control performances (i.e., frequency restoration and accurate active power sharing) are realized in a timely fashion considering frequent operations of MERs. Case studies are tested and discussed for load variations, different control parameters, communication link failures, and MER operations through time-domain simulations in PSCAD/EMTDC platform.

中文翻译：

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具有移动应急资源的孤岛微电网分布式二次控制

车载移动应急资源 (MER) 在微电网形成和调节以增强电力系统弹性方面发挥着重要作用。本文提出了一种分布式固定时间二次控制 (DFSC) 方案，用于调节具有 MER 的孤岛微电网中的频率和有功功率共享。提议的 DFSC 方案是基于考虑 MER 特性（例如，移动性、灵活性和潜在网络威胁）的通用有向通信图设计的。每个 DER 通过定向通信链路从其邻居接收数据。所提出的钉扎控制策略仅选择少量 DER 进行钉扎，这些 DER 可以访问参考频率信息，并将指导其余本地 DER 和 MER 的操作。此外，保证收敛时间由控制参数和通信图确定，无需应用初始操作状态。该论文表明，考虑到 MER 的频繁操作，可以及时实现所需的控制性能（即频率恢复和准确的有功功率分配）。通过 PSCAD/EMTDC 平台中的时域模拟，针对负载变化、不同控制参数、通信链路故障和 MER 操作对案例研究进行了测试和讨论。