基于负荷组合与光伏电源匹配算法的微电网配置

Microgrid Configuration Based on Matching Algorithm between Load Combination and Photovoltaic DG

微电网中的负荷与可再生电源的输出功率具有不同日分布特性,为此,建立了兼顾负荷侧与用电侧的微电网投资效益模型,提出了基于负荷与光伏电源功率匹配算法的微电网配置方法。通过构造有根树,对微电网供电可行域内的负荷组合进行遍历,评价不同组合下负荷叠加曲线对光伏电源发电曲线的适应度。根据适应度评价结果,划定微电网的最优供电区域。最后在此基础上,进行全年模拟运行,确定微电网内各微源和储能设备的容量,使投资效益达到最优。以RBTSBus6系统为例进行计算分析,验证所述方法的有效性。

In microgrid,the load and the renewable power output are different in daily distribution properties.Therefore,this paper establishes microgrid investment benefit model,taking into account both the load side and power side of microgrid,as well as proposes microgrid configuration method based on the matching algorithm between load and photovoltaic DG.Rooted trees are formulated to traverse all the possible load combinations,and accordingly evaluate the closeness degrees between combined load curves and photovoltaic DG output curve.Based on the results,the capacities of DGs and energy storage devices are determined by simulating the whole-year operation,thus optimizing the investment benefit.A calculation example based on RBTS-BUS 6 system verifies the effectiveness of the proposed method.