In order to meet the power demand of photovoltaic micro grid and relieve the power supply pressure,the demand side response scheduling method of photovoltaic micro grid based on the source grid load situation was studied.Firstly,according to the structure,operation status and interaction between source and grid loads of photovoltaic micro grid,a response model of power supply and load demand side was established to balance the difference between peak and valley loads.Then,the demand side response dispatching model of photovoltaic micro grid was established with the minimum operation cost and exchange energy of the micro grid as the objective function,combined with the constraints such as power balance,charging and discharging power,charging situation and line power.Finally,the model was solved based on non-dominated sorting genetic algorithm(NSGA-II)to obtain the optimal scheduling results.The results show that after the application of this method,the output of micro grid power supply is more reasonable,the total operating cost is significantly reduced,and the load peak valley difference is reduced from 480kW to 220kW.This method can reasonably dispatch the demand side response of photovoltaic microgrid,relieve the op-erating pressure of distribution network,and its performance in energy saving is outstanding.
关键词
光伏微电网/源网荷/需求侧响应/调度模型/分时电价/并网模式/NSGA-II算法
Key words
photovoltaic microgrid/source network load/demand side response/scheduling model/peak and valley load/time of use electricity price/grid connection mode/NSGA-II algorithm
维普
万方数据