基于节点阻塞电价的电动汽车双层充电优化策略

发布时间：2018-06-29 20:37

本文选题：电动汽车 + 直流最优潮流　；参考：《电网技术》2016年12期

【摘要】：建立了基于节点阻塞电价的电动汽车充电双层优化模型。在上层模型中,建立含电动汽车负荷的直流最优潮流模型,优化各机组出力使系统总发电成本最小,利用拉格朗日乘子和功率传输分布因子确定节点阻塞电价。在下层模型中,优化目标不仅包括充电费用,而且计及了电池损耗成本、充电等待时间成本;约束条件增加了行驶和充电的电池荷电状态等;将用户充电电价分为分时电价和浮动的阻塞电价两部分,优化电动汽车充电负荷时考虑其一日可多次充电的情况。上层模型向下层模型传递每时段充电电价、下层模型向上层模型反馈每时段充电负荷,通过迭代求解双层优化模型,使电网和用户经济效益最大。最后通过算例验证了所建立模型的有效性。
[Abstract]:A double-layer optimization model of electric vehicle charging based on node congestion price is established. In the upper layer model, the DC optimal power flow model with electric vehicle load is established, the total generation cost of the system is minimized by optimizing the output force of each unit, and the node congestion price is determined by using the Lagrange multiplier and the power transmission distribution factor. In the lower layer model, the optimization goals include not only charging cost, but also battery loss cost, charge waiting time cost, the constraint condition increases the charge state of driving and charging battery, and so on. The charging price of electric vehicle is divided into two parts: time-sharing price and floating blocking price. When optimizing the charging load of electric vehicle, the case of multiple charges per day is considered. The upper layer model transfers the charge price to the lower layer model and the lower layer model feeds back the charge load of each period to the upper layer model. The two-layer optimization model is solved iteratively to maximize the economic benefit of the power network and the user. Finally, an example is given to verify the validity of the proposed model.
【作者单位】：华北电力大学电气与电子工程学院;
【分类号】：TM73

【相似文献】