考虑应急电源功能的光储充放电站配置方法研究

Configuration of Optical Storage&Charging and Discharging Power Station Considering Emergency Power Function

考虑电动汽车的车网互联(vehicle to grid,V2G)运行模式,提出了光储充放电站应用于应急电源的配置方法。以医院为例,首先,根据门诊大楼屋顶面积确定光伏发电装机容量,以重要负荷功率需求确定电动汽车充放电桩数。其次,以光储充放电站运营商收益最大化为目标函数,医院后备时间(2h)用电需求为约束条件,建立了光储充放电站储能容量配置模型,利用CPLEX求解器求解模型。最后,校验光储充放电站是否满足医院24h用电需求。以医院典型季节日负荷为例进行了算例分析,结果表明:光储充放电站在正常运行时经济效益显著,且能够满足配电网供电中断时医院的应急用电需求。方法可推广至其他重要电力用户的应急电源配置。

Considering the V2G operation mode of electric vehicles,the configuration of the optical storage&charging and discharging power station applied to the emergency power supply is proposed.Taking the hospital as an example,firstly,the installed capacity of the photovoltaic power generation is determined according to the roof area of the outpatient building.Then the number of the charging and discharging piles of the electric vehicles are notarized according to the power demand of the important loads.Secondly,the energy storage capacity configuration model of the optical storage&charging and discharging station is established with the objective function of maximizing the profit of the operator of the optical storage&charging and discharging station and the constraint condition of the power demand of the backup time(2 hours).The model is solved by using the CPLEX solver.Finally,it is verified whether the optical storage and discharge station meets the 24-hour power demand of the hospital.Taking the typical seasonal daily load of a hospital as an example,the results show that the optical storage and discharge station has significant economic benefits during the normal operation and is able to meet the emergency power demand of the hospital when the power supply of the distribution network is interrupted.The method can be extended to other important power users'emergency power supply configuration.