Adaptability evaluation and active power regulation of FID in active distribution network

摘要

In this study, a two-layer model is established for evaluating the adaptability and regulating the active power to improve the economy and stability of a distribution network. A flexible interconnection device (FID) is used to provide flexible, fast, and accurate power conversion control in the active distribution network. It solves the power reverse problem due to photovoltaics (PV). The adaptability model is established in the planning layer to evaluate the revenue of the distribution network after access to FIDs in different numbers and positions with respect to the economy. The adaptive step-size search algorithm and FID active power transfer interval (which can be advantageous to the distribution network) are considered as the operation regions. Subsequently, the operation regions are transferred to the active power regulation model in the optimization layer via the sequential scan method to adjust the PV permeability and load ratio of the distribution network for stability. The elitist non-dominated sorting genetic algorithm is used to select the optimal position, number, and active power transfer values of the FID corresponding to the optimal PV permeability and load rate in the operation regions. Finally, the results of a realistic case study are provided and indicate that the proposed approach improves the economy and stability of the distribution network. The simulation results verify the effectiveness and feasibility of the proposed method.