Allocation and Optimal Operation Strategy of Distributed Energy Storage with High Ratio PV

The configuration and optimal operation of Distributed Energy Storage (DES) can reduce the adverse effects of high proportional PV access on grid operation. In this paper, we consider the voltage characteristics of the low-voltage station area with high proportion of PV access, and divide the mandatory charging time and non-mandatory charging time for DES configuration and optimal operation according to the voltage amplitude, and solve the DES location and capacity problem with the lowest cost of DES configuration as the optimization objective during the mandatory charging time, and the optimal operation of DES with the minimization of station loss as the optimization objective during the non-mandatory charging time. The objective function is solved using the particle swarm algorithm. The results of the analysis of the IEEE-33 nodes system show that the DES configuration and optimal operation strategy proposed in this paper is feasible.