计及光伏和电动汽车的多阶段配电网拓展规划

Multi-stage Distribution Network Expansion Planning Considering Photovoltaic and Electric Vehicles

随着可再生能源及多元化负荷的大量接入,更新配电网络拓扑结构是双向有利的,既能够促进可再生能源的消纳以及满足新型负荷的需求,还有助于提高城市配电网规划结果的合理性。为此,提出一种计及光伏和电动汽车的多阶段配电网拓展规划方法。首先,建立光伏电站和电动汽车充电站的基础数学模型;其次,考虑网络的光伏消纳能力以及电动汽车的随机充电需求,建立一个以总拓展规划费用的净现值最小为目标的多阶段多负荷等级的联合规划模型;最后,为了进行这一分析,以24节点配电网为例进行仿真计算。结果表明,考虑光伏和电动汽车的联合规划会影响配电网整体网架结构和潮流分布,两者的协同规划在一定程度上能够降低总拓展规划成本。

With the massive access of renewable energy sources and pluralistic load,it is bi-directional beneficial to update the distribution network topology.It can not only promote the consumption of renewable energy and the satisfaction of new load demands,but also improve the rationality of urban distribution network planning results.As consequence,a multi-stage distribution network expansion planning method considering photovoltaic and electric vehicles was proposed.Firstly,a basic mathematical model of photovoltaic station and electric vehicle charging stations was established.Then,a multi-stage multi-load-level joint planning model was investigated to minimize the present value of total cost of expansion,the photovoltaic consumption capacity of the network and the random charging demands of electric vehicles were considered in the process.Finally,to carry out this analysis,taking the 24-node distribution network for simulation,the results show that the joint planning considering photovoltaic and electric vehicles will affect the overall structure and power flow distribution of the distribution network,the cooperative planning of photovoltaic and electric vehicles can reduce the total expansion planning cost to a certain degree.