Study on the impacts and analysis of EV and PV integration into power systems

EV (Electric vehicle) and PV (photovoltaic) load will bring about some influence to the power system when is connected to gird, such as the change of load characteristics, increase the peak valley difference and etc. At the same time the application of inverter will bring about reverse power threat to the operation and maintenance of power grid. To weaken the influence above, the technology named Vehicle to Home is proposed, which can control EV charging load to a specific value as well as control the EV discharge to grid. In order to actively respond to the impact of EV and distributed PV application access to the power grid, based on the actual home users, the data of household electricity load and the user level transformer are collected and analyzed. At the same time with the peak and valley price, based on the quantitative analysis of the influence of electric cars, solar access to the grid, the interactive applications is put forward. Calculation and interactive analysis results show that the implementation of V2H can not only bring economic benefits to users but also reduce the peak valley ratio and the risk of peak on peak which result on the electric vehicle charging in disorder.