计及风光消纳的能源互联系统经济优化

Economic optimization for energy network considering consumption of wind/photovoltaic generation

基于微网用户愿意参与需求响应以及多微网可进行能源互联的前提下,建立了既可提升风光消纳率又可降低微网运行费用的双层优化模型。首先,建立能源互联系统中所有微网的总日运行费用模型;其次,建立多微网互联系统风光消纳模型,从而构成双层优化模型;然后,利用宽容分层序列法对双层模型进行求解;最后,通过Shapley分配对微网构成的联盟日运行费用进行重新分配,以保障每个微网能够从合作中获得一定的收益。算例结果表明,所提方法可降低各微网的日运行费用,还可有效提高微网对分布式电源的消纳率。

Based on demand response and interconnection among multiple micro-grids,a two level consumption model is proposed to improve the consumption rate of renewable energy and reduce the micro-grids’ operation cost. Firstly,daily operating cost of all grids in the internet is founded;secondly,consumption rate model of wind-photovoltaic generation is founded;and then, the founded two level model is solved by tolerance stratified sequence method;lastly,Shapley distribution is employed to allocate the daily cost of coalition to each micro-grid,to guarantee the profit of each gird in the cooperation. Simulation result shows that the proposed approach can contribute to the absorptive capacity of distributed energy generation,and can also reduce the daily cost of each micro-grid in the coalition.