An interactive operation strategy for microgrid cooperated with distribution system based on demand response

Microgrid is an autonomous system which can achieve self-control, self-protection and self-management. It will not only comprehensively exploit the advantages of renewable energy sources (RES) in environment protection and energy conservation, but also overcome its intermittency and volatility, reduce the impact to distribution system when the distributed energy resources (DERs) are connected to the distribution network as microgrids. Deployment of microgrids can facilitate efficient demand side management and integration of RESs at the distribution level. This paper proposed an interactive operation strategy for microgrid cooperated with distribution system based on demand response. In the present paper, a day-ahead operation optimization model of microgrid on account of electricity purchasing cost, electricity selling benefits, generation cost of distributed generations (DGs) is proposed. And then an interaction model in which the microgrid responds to the interaction demand through adjusting the scheduling plan aiming at dealing with the excessive peak load of distribution system is presented. We analyzed the relationship between interaction capacity and interaction cost via sensitivity analysis and finally achieved the interaction between the microgrid and the distribution system. The simulation results in a microgrid, which has a wind turbine (WT), photovoltaic (PV) system, energy storage system (ESS) and loads, demonstrate the effectiveness of the proposed method.