Optimization-Based Restoration Strategy in a Self-Healing Distribution Network
Quoc Tuan Tran, Thien Phong Tran, Minh Cong Pham · 2024
Distribution grids are gradually equipped with more distributed energy resources (DERs); this can make the power network more sophisticated. If a fault occurs, the network's operations are put at risk, causing a discontinuity in service or a blackout in the worst-case scenario. Thus, the objective of the Distributed System Operator (DSO) is to ensure the optimal operation of the distribution grid under and postfault conditions. This paper presents an optimization-based restoration strategy in a self-healing distribution network (SHDN) with high penetration of renewable energies, e.g., photovoltaic (PV) systems. The proposed method utilizes the coordinated voltage control (CVC) strategy to avoid voltage violations while maximizing power generation. This paper also employs an approach based on state estimation (SE), providing real-time monitoring, network reconfiguration, and resilience enhancement in distribution networks. The CVC strategy and State Estimation are validated using a real medium-voltage (MV) grid.