Based on the timing characteristics of wind power,photovoltaic generation and five load types,a model with the minimum sum of investment,maintenance cost,power purchase cost,reliability cost and environmental pollution compensation cost of distribution network as its objective is built for the locating and sizing of DG(Distributed Generation) and ES(Energy Storage) device,which adopts the coordinative optimization strategy of load,DG and ES to optimize the capacity and power of sodium-sulfur cell for improv...