Optimal Configuration of Wind-Solar-Hydrogen Multi-Energy Complementary Microgrid with Demand Side

To optimize the economic cost of multi-energy complementary microgrid, an optimal configuration method is proposed for the wind-solar-hydrogen multi-energy complementary microgrid with demand-side response. First, the operation control strategy is formulated under the relevant power constraints and control principles. Then, in order to maximize the direct consumption of wind and solar power, an incentive demand-side response is introduced, and the mixed integer programming is used to optimize the load curve. Further the optimal configuration model with the demand-side response is established: with the minimum annual cost as the optimization goal and the requisite constraints of the system, the particle swarm optimization is used to iteratively find the optimal configuration. In order to verify the model, the historical data of a certain area is utilized to solve the optimal configuration scheme, and the technical and economic analysis is carried out under different operating modes of microgrid, the self-balance rate constraint and influencing factors of construction cost. The analysis results show that by introducing the hydrogen energy power generation system and considering the demand-side response, when the self-balancing rate is 81.64%, the minimum cost to reach the equivalent annual value is 3.143 million yuan; the self-balancing rate is controlled at a reasonable level, and the cost reduction promoted by the technology advancement will help to improve the economic benefits of the microgrid.