Identification of Key Nodes in Active Distribution Networks based on Power Composition Analysis

The identification of key nodes is an important foundation for improving the reliability and economy of distribution network monitoring, and accelerating the realization of panoramic transparency, observability, and measurability in distribution networks. This paper proposed a method for identifying key nodes in active distribution networks based on power composition analysis. Firstly, based on the principle of node power allocation, the power composition of different nodes is obtained using the power flow tracking algorithm. Based on power composition, the subordination degrees of different nodes to power supplies and loads can be obtained. Finally, combining the importance of power supplies and loads with subordination degrees, the node importance is obtained. Based on this, the key nodes of the distribution network are determined. Simulation results demonstrate the correctness of the proposed method.