电动汽车充电与风电协同调度的碳减排效益分析

在电动汽车充电与风电协同调度模型的基础上,提出了协同调度碳减排效益的测算模型,定量分析了电动汽车充电与风电协同调度在电网和交通领域的碳减排效益。首先计算火电碳排放因子,然后比较协同调度和自由充电模式下的碳排放量。通过电动汽车单位碳排放量的计算模型,比较燃油汽车、纯火电充电、自由充电和协同调度充电电动汽车的碳排放水平。分别以电网平均碳排放水平和车辆单位碳排放水平衡量,协同调度相对于自由充电模式贡献的减排效益都随着风电装机容量增加而显著增加。因此,协同调度是实现风电和电动汽车规模化协调利用的一种有效手段。

CO2 Reduction Benefit by Coordinated Dispatch of Electric Vehicle Charging and Wind Power

Based on a coordinated dispatch model of the electric vehicle(EV) and wind power,the model of CO2 emission reduction benefit is established to analyze CO2 emission reduction both in the power grid and transport sector.CO2 emission factor of thermal power is calculated,and then CO2 emissions under EV charging with and without coordinated dispatch are compared.CO2 emissions of gasoline-powered cars and EVs charged by thermal power,charging with and without coordinated dispatch with wind power are compared through the calculating model of CO2 emissions per unit.Taking average CO2 emissions of power grid and per unit of vehicles as measures,the CO2 emission reduction by coordinated dispatch compared to EV charging without coordinated dispatch increases significantly along with the increase of wind power installed capacity.Consequently,coordinated dispatch is an effective means to realize collaborative use of large-scale wind power and EVs. This work is supported by National Natural Science Foundation of China(No.51107072) and Shandong Provincial Natural Science Foundation of China(No.ZR2010EQ005).