基于用户出行链和调控意愿的城市级私家电动汽车调控能力评估

提出一种基于电动汽车出行链的私家电动汽车(electrical vehicle,EV)参与电网调控能力的评估方法。由用户出行链的特征,从工作日和非工作日两种情况对私家EV的出行链进行模拟,得到EV在城市各类功能区的空间分布变化特征;考虑影响EV参与电网调控的关键性因素,以电动汽车荷电状态约束和功率约束建立单辆私家EV参与电网调控的能力模型,进而建立集群EV在不同城市功能区的调控能力模型。最后通过仿真分析,对工作日和非工作日的私家EV调控能力进行评估和对比,并着重考虑私家EV参与调控意愿下的调控能力变化。仿真分析结果表明,私家EV的调控能力变化与某城市功能区EV数量变化相关,用户参与意愿比例的下降使得调控能力水平整体下降,但变化特征仍以EV时空分布变化特征为主导。

Regulation Ability Estimation of Private EVs at City Level Considering Users' Trip Chain and Regulation Willingness

This paper presents a method to evaluate the ability of private electric vehicle (EV) to participate in power grid regulation based on EV trip chain. According to the characteristics of users’ trip chain, the trip chain of private EVs is simulated during working days and non-working days, and the spatial distribution variation characteristics of EVs in various functional areas of the city are obtained. Considering the key factors affecting users’ participation in power grid regulation, the capacity model of single private EV is established according to the SOC constraint and power constraint of EV, and then the regulation capacity model of cluster EVs in different urban functional areas is established. Finally through the simulation analysis, the regulation ability of private EVs during working days and non-working days is evaluated and compared. Furthermore, the regulatory capacity changes of private EVs under the willingness to participate in regulation are considered. The results show that the change of the regulatory capability of private EVs is related to the change of EV number in a functional area of a city, and the decrease of the proportion of users’ willingness to participate makes the overall regulatory capability decrease, but the change feature is still dominated by the change feature of EV spatial distribution.