摘要
电动汽车与电网之间可实现能量的双向流动,这种双向互动将是智能电网研究的一个重要内容。车网互动双方利益有冲突、决策有先后,具有动态博弈的特点。在分析车网互动的形式及特点的基础上,利用Stackelberg动态博弈理论分析双方利益的均衡问题,建立电动汽车和电网的博弈模型,结合优化算法对此博弈模型进行求解得出納什均衡解,对车网双方交易电价及电价基础上的充放电电量进行分析,确定车网的互动策略。以某一地区电动汽车的使用情况和电网公司的负荷状况为例进行了分析计算,结果表明方法得出的交易电价和电动汽车的充放电电量在减小用户用车成本的同时,对电网负荷起到削峰填谷的作用,可以实现电网公司和用户双方利益均衡。
The implementation of bidirectional energy flow between electric vehicles and grid is an important research on smart grid. Vehicle-to-grid interaction is characterized by dynamic game for the interest conflicts and priority decisions. Based on the specific form and characteristics of vehicle-to-grid interaction, the equilibrium problem of mutual interest was analyzed by the Stackelberg dynamic game theory and the vehicle-to-grid game model was also established. By using optimization algorithm, solution of Nash Equilibrium was gained from this model. Then, this paper analyzed the vehicle-to-grid power exchange and charge-and-discharge energy based on power exchange. Finally, the vehicle-to-grid interaction strategies were explored through analysis of vehicleto-grid power exchange as well as charge and discharge. Taking a specific area as the object, this paper analyzed its electric-vehicle usage frequency and power-grid company loading conditions. Research results show that the proposed strategy can not only minimize the users＇ cost, but also play a role in peak load shifting,which achieves the benefit equilibrium between power grid companies and users.
出处
《华东交通大学学报》
2017年第5期49-55,80,共8页
Journal of East China Jiaotong University
基金
国家自然科学基金项目(51667008)
关键词
交易电价
充放电方案
动态博弈
納什均衡
削峰填谷
power exchange
charge-and-discharge scheme
dynamic game
Nash Equilibrium
peak loadshifting
