电动汽车充电站经济运行分析

Economic Operation Analysis of the Electric Vehicle Charging Station

充电站必须在数量上满足电动汽车的正常行驶需求,但是从实际运行数据来看,存在着充电站内配电变压器容量选择过大、电能损耗较大的问题,因而增加了运营成本,不利于充电站的广泛建设。本文以实际电动汽车充电站的运行数据为基础,计算并分析充电站变压器损耗,从经济运行角度,对比基于总费用和考虑变压器过载运行的两种充电站变压器选择方法,确定变压器配置容量。最后在进一步分析充电站负荷特点的基础上,合理利用变压器的过载运行,减小变压器配置容量,使充电站经济性明显提高。

As an＇important component of the normal driving demand for EVs. However, EVs＇ support facilities, charging stations have to meet from the actual operating data, it was found that the capacity of the distribution transformer was too large, leading to too much power loss. This was not conducive to the extensive construction of charging stations. Based on operation data of actual electric vehicle charging station, this paper calculates and analyzes transformer losses of the charging station. From the point of view of the charging station＇s economic operation, two methods to choose the transformer＇s configuration capacity are proposed. At the end of this paper, load characteristics is analyzed to have a reasonable use of overload operation of the transformer and to further reduce transformer configuration capacity, and then the economy of and the charging station is improved.