发电不确定性条件下电动汽车对智能家居能量管理的贡献(英文)

Contribution of Electric Vehicles for Energy Management in Smart Houses with Uncertain Power Generation

光伏、风电等可再生能源的大规模接入给电力系统的运行带来了诸多问题,如由发电过剩引起的电网反向潮流、电网频率和节点电压调节容量的不足。作为解决可再生能源出力波动性引起的不确定性问题的方法之一,采用电动汽车作为储能装置,即所谓的V2H(vehicle to house)或者V2G(vehicle to grid),将发挥重要作用,因此有必要建立电动汽车应用评估方法。以配有光伏发电装置和一辆电动汽车的某智能家居为例,定量评估了电动汽车电池充放电对光伏发电输出功率的家庭内部使用比例、家庭用电成本和CO2排放量的影响。分析结果表明,通过光伏发电装置和电功汽车电池的有效配合使用,可以减少反向潮流和CO2排放。最后,通过仿真分析论证了多辆电动汽车对含有多栋智能家居的智能化小区能量管理的贡献。

A large-scale installation of renewable energy sources（RES） such as photovoltaic（PV） and wind power generation causes new problems in power system operation,for example reverse power flow by surplus power and insufficient capacity to regulate system frequency and node voltage.As one of the countermeasures against such uncertainty problems due to output fluctuations of RES,concepts named vehicle to house（V2H） or vehicle to grid（V2G） by using electric vehicles（EVs） as energy storage will play an important role and also it is indispensable for us to establish the evaluation approach of the usage of EVs.In this research,we selected a smart house equipped with PV generation and an EV,and quantitatively evaluated the effects of charging and discharging the EV＇s battery on domestic consumption rate of PV output,electricity cost of the house,and the amount of CO2 emission.As a result,the reverse power flow and CO2 emission were reduced by effective utilization of PV generation and the EV＇s battery.Finally,contribution of EVs for energy management of aggregated houses（a multi-house community） was also investigated and verified by simulation.