电力系统自动化2018，Vol.42Issue(1)：39-46,8.DOI:10.7500/AEPS20170630001
电动汽车充电站有序充电调度的分散式优化
Decentralized Optimization of Ordered Charging Scheduling in Electric Vehicle Charging Station
摘要
Abstract
The security and economic operation of the power system is impacted or even challenged by the disordered charging of large-scale electric vehicles,especially for the distribution system.Aiming at the defects of centralized optimization and control method and the fixed pricing strategy,a decentralized optimization strategy of ordered charge scheduling is proposed based on the Lagrange relaxation method.The traditional centralized charging optimization problem of electric vehicle charging station is decomposed into N sub problems(N is the number of electric vehicles demanding charging).The maximum profits of the charging station are used as the objective function in the optimization model.The constraints of power demand of users, charging time,capacity of transformer and time-of-use(TOU)price of charging station are taken into consideration.In order to verify the effectiveness of the proposed method,Monte Carlo method is adopted to simulate the charging demand of electric vehicles.The profits of charging station,the effect of clipping load peak and the calculation efficiency under the fixed price and TOU price strategy of the charging station in situations of ordered charging and disordered charging when adopting centralized and decentralized optimization respectively are simulated and analyzed.The simulation results show that the proposed method can significantly increase the profits compared to use the disordered charging and fixed price strategy.By contrast with the centralized optimization,the computational efficiency of the proposed decentralized optimization is much higher.Though the charging station using TOU price has the effect of filling valley,the effect is not too ideal in stabilizing the load fluctuation.关键词
电动汽车/分散式优化/拉格朗日松弛法/分时电价/固定电价Key words
electric vehicle/decentralized optimization/Lagrange relaxation/time-of-use price/fixed price引用本文复制引用
程杉,王贤宁,冯毅煁..电动汽车充电站有序充电调度的分散式优化[J].电力系统自动化,2018,42(1):39-46,8.基金项目
国家自然科学基金资助项目(5160070515).This work is supported by National Natural Science Foundation of China(No.5160070515). （5160070515）
