Study On Optimal Scheduling Of Photovoltaic Power Microgrid

In recent years,facing the world's energy and environment of the two major themes,solar energy as a sustainable development of energy has been vigorously developed and widely used,and micro-grid as an effective way to consumption renewable energy get much attention.How to improve the utilization efficiency of renewable energy in microgrid by adopting feasible optimization scheduling policy is a hotspot.Therefore,it is of practical significance and practical value to study the optimal scheduling problem of photovoltaic power microgrid.For distributed photovoltaic source,energy storage,fuel cell and load of typical micro-grid system,operating characteristics of each component unit of microgrid are analyzed.In particular,the influencing factors of the power generation output of the photovoltaic source and the simulation analysis of the factors that affecting the power output of the PV source and PV source power output of micro-grid scheduling.On this basis,combined with the power generation cost of each unit in the microgrid,off-grid operation mode multi-objective optimal scheduling model of the micro-grid system with the smallest operating cost and the maximum environmental benefit is established and considering the power balance and network loss constraint equations,then And the constrained equations are transformed into the single objective scheduling model with the most comprehensive benefit.Based on the study of optimization theory,through the comparative analysis of the optimization algorithm,an improved particle swarm optimization algorithm is proposed to solve the problem of the local optimization and the slow convergence rate in the calculation process.In order to ensure the stable operation of the microgrid system and give full play to the performance of the energy storage device,circulating technology of computer running the program is presented to contribute to the optimal output algorithm of the energy storage device is given in the optimized scheduling scheme.The simulation results of the IEEE 30-node system show that the optimal scheduling of the microgrid energy operating is reduced,the running cost is reduced,the environmental benefits are improved,and the effectiveness of the proposed optimal scheduling strategy is proposed,model and algorithm is verified.