Key Parameters Affecting the Transient Characteristics of Active Distribution Networks Under Large Disturbances

Mastering the key parameters affecting the transient characteristics of active distribution networks is essential for establishing accurate equivalent models of active distribution networks and studying the impact of distributed generation on the power grid. This paper proposes a comprehensive evaluation index and extracts the key parameters within active distribution networks based on the proposed index. Firstly, a detailed electromagnetic model of an actual active distribution network is established, and the impacts of grid strength and unit capacity on the external characteristics of active distribution networks are analyzed. Then, based on the phase characteristics of the external features of active distribution networks, a comprehensive evaluation index is proposed. The index calculation is performed separately for grid strength, unit capacity, and unit parameters, obtaining the key parameters affecting the external characteristics of active distribution networks.