The responsibility allocation method for overvoltage problem in distribution network with large-scale distributed photovoltaics integration based on the improved Shapley value

Abstract

Abstract Aiming at the node overvoltage problem due to distributed PV generation large-scale integrated into the distribution network, an improved overvoltage apportionment method is proposed to determine the overvoltage responsibility of each PV generation system. Based on the node Shapley value calculation with the voltage loss function, the influence factor of the distribution network is derived, and the improved Shapley value correction factor is obtained by using the gray correlation analysis method. The improved Shapley value is used to calculate the overvoltage responsibility. The nodes with a similar voltage change trend, in the calculation example of the PG&E-69 node distribution system, can be combined to reduce the calculation burden. The simulation results show that the improved Shapley value is more fair and reasonable than the Shapley value, considering the influence of all factors comprehensively.