Research on Dynamic Reconfiguration of Distribution Network with High Penetration of DG

Abstract

Increasing penetration of DG brings many uncertain factors to the operation of the distribution network, which will increase difficulties for the recovery of power supply after the distribution network fault happens. Considering the real-time load demand and the random output changes of DG, this paper proposes a dynamic network reconfiguration method for distribution network fault recovery under high penetration of DG. First, a dynamic network reconfiguration model for distribution network fault recovery is established. Then, by introducing intermediate variables, a reasonable second-order cone relaxation is performed on the dynamic reconfiguration model. Third, the principle of dynamic islanding partition is introduced to coordinate with dynamic network reconfiguration. Finally, case studies are carried out on the IEEE 33-bus distribution network to illustrate the effectiveness of the proposed method.