Integrated Energy Exchange Scheduling for Multimicrogrid System With Electric Vehicles
Integrated Energy Exchange Scheduling for Multimicrogrid System With Electric Vehicles
复制标题
电动汽车多微电网系统综合能量交换调度
DOI：
10.1109/tsg.2015.2438852
复制
发表时间：
2016-02
影响因子：
9.6
通讯作者：
Xu, Hui
中科院分区：
文献类型：
--
作者：
Wu, Jiang;Li, Pan;Zan, Peng;Xu, Hui
电动汽车可以看作是微电网中灵活的移动电池储能系统。对于一个区域内的多个微电网，需要协调调度充放电，以避免多微电网系统与主电网之间的电力交换尖峰。提出了一种考虑电动汽车作为储能设备的多微网系统两阶段集成能量交换调度策略。然后，利用代表适当约束下边际成本的几个对偶变量，形成更新后的电价，即对原电价的修正。在此基础上，提出了一种基于价格的分散调度策略。仿真结果表明，两阶段调度策略降低了电力成本，避免了电池充放电状态的频繁切换。采用分散式调度策略，每个微网只需要解决局部问题，将总电量交换限制在安全范围内。
Electric vehicles (EVs) can be considered as flexible mobile battery storages in microgrids. For multiple microgrids in an area, coordinated scheduling on charging and discharging are required to avoid power exchange spikes between the multimicrogrid system and the main grid. In this paper, a two-stage integrated energy exchange scheduling strategy for multimicrogrid system is presented, which considers EVs as storage devices. Then, several dual variables, which are representative of the marginal cost of proper constraints, are utilized to form an updated price, thereby being a modification on the original electricity price. With this updated price signal, a price-based decentralized scheduling strategy is presented for the microgrid central controller. Simulation results show that the two-stage scheduling strategy reduces the electricity cost and avoids frequent transitions between battery charging/discharging states. With the proposed decentralized scheduling strategy, each microgrid only needs to solve its local problem and limits the total power exchange within the safe range.
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