| 引用本文: | 王子奇,侯思祖,郭威.考虑库存电池的光储换电站优化充电策略[J].电力自动化设备,2022,42(10): |
| WANG Ziqi,HOU Sizu,GUO Wei.Optimal charging strategy of PV-BESS-based battery swapping station considering inventory batteries[J].Electric Power Automation Equipment,2022,42(10): |
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| 摘要: |
| 库存电池数量对电动汽车换电站的运行有重要的影响，但已有针对换电模式的研究忽略了这一因素，导致优化结果的可行性难以得到保证。为此，提出了将库存电池纳入光储换电站模型的优化充电策略，对库存电池数量进行规划并研究基于库存电池的优化运行问题。首先，建立光储换电站的数学模型；然后，将库存电池按照调度周期初始状态分为库存耗尽电池(DB)、满容量电池(FB)，结合二者与换电行为之间的时间耦合性，提出基于库存电池充换电约束的充电模型；最后，在总成本中计入充电成本和库存电池购置成本，建立优化充电策略的混合整数线性规划模型。算例结果表明：库存DB数量的递增会减少充电策略对换电时间的依赖性并降低所需库存FB数量的最小值，但追求充电成本最小化会导致库存电池的成本过高；基于模型所得最优库存电池数量在充分利用分时电价的基础上控制了电池数量，同时实现了储能的最大化利用。 |
| 关键词: 电动汽车 光储换电站 库存电池 时间耦合性 优化充电策略 |
| DOI：10.16081/j.epae.202204038 |
| 分类号:U469.72 |
| 基金项目:国家重点研发计划项目(2018YFF01011900) |
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| Optimal charging strategy of PV-BESS-based battery swapping station considering inventory batteries |
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WANG Ziqi, HOU Sizu, GUO Wei
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School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China
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| Abstract: |
| The number of inventory batteries has important influences on the operation of electric vehicle battery swapping station, but the existing researches on the battery swapping mode ignore this factor, which makes the feasibility of the optimization results difficult to be guaranteed. Therefore, the optimal charging strategy is proposed by incorporating inventory batteries into the model of PV-BESS(PhotoVoltaic and Battery Energy Storage System)-based battery swapping station, the number of inventory batteries is planned and the optimal operation problem based on inventory batteries is studied. Firstly, the mathematical model of PV-BESS-based battery swapping station is established. Then, the inventory batteries are divided into inventory DBs(Depleted Batteries) and FBs(Fully-charged Batteries) according to their initial state of the scheduling period. Combined with the time coupling between DBs or FBs and the battery swapping behavior, the charging model based on the charging and swapping constraints of inventory batteries is proposed. Finally, the charging cost and the inventory battery purchase cost are included in the total cost, the mixed integer linear programming model is established to optimize charging strategy. The results of example show that increasing the number of inventory DBs will reduce the dependence of charging strategy on swapping time and lessen the minimum number of required inventory FBs, but the pursuit of minimizing the charging cost will lead to excessive cost of inventory batteries. The optimal number of inventory batteries obtained by the proposed model controls the number of batteries on the basis of making full use of the time-of-use electricity price and realizes the maximum utilization of energy storage. |
| Key words: electric vehicles PV-BESS-based battery swapping station inventory battery time coupling optimal charging strategy |
