Power Optimization Strategy of DC Microgrid Based on Droop Control

Abstract

As an efficient way to consume new energy, DC microgrid has received extensive and international attention. However, the control of the DC microgrids has not taken into account the difference in operating cost of micro sources, resulting in low operating efficiency. Therefore, this paper establishes an economic model for the DC microgrid, with the goal of minimizing operating cost, the optimal operating condition of the system is solved. On this basis, a secondary power optimization control strategy is proposed. Based on the simulation platform, the feasibility of the proposed strategy is verified under different operating conditions. The results show that the proposed power optimization strategy can effectively reduce the system operating cost by about 1.49%.