Distribution network peak-shaving and flat-valley electric vehicle replacement station

Abstract

The invention discloses a peak-shaving and valley-shaving electric vehicle replacement station for a power distribution network. It includes 10kV AC busbar, one-stage DC busbar, two-stage DC busbar, converter device, energy storage device, electric vehicle charging device, solar and wind energy power supply device, power station power supply device and station monitoring device. The swap station is equipped with a large-capacity energy storage device, which is charged during the low-peak period of electricity consumption, and the stored electric energy is fed back to the grid during the peak period of electricity consumption, so as to achieve the function of peak-shaving and flat-valley; Space, configure a certain capacity of solar and wind power supply devices, and charge the energy storage battery and electric vehicle battery through the DC bus. While undertaking the charging function of the electric vehicle battery pack, the present invention also provides an energy storage device for the electric power system, which is convenient for the distribution network to shave peaks and flat valleys, and has low system loss. When building an electric vehicle replacement station, there is no need to expand the power system, and the power quality is high. .

Description

technical field [0001] The invention relates to an electric vehicle exchange station, in particular to an electric vehicle exchange station capable of performing peak-shaving and valley-shaving for a power distribution network. Background technique [0002] In the face of the fossil energy crisis and the huge pressure on the environment, how to reduce the demand for oil for automobiles, and how to develop electric vehicles and widely apply them to people's livelihood are the focus of governments of all countries. Electric vehicles are all or part of the vehicles that use electricity as the power source of the drive system. Compared with traditional vehicles powered by gasoline combustion, electric vehicles have obvious advantages in environmental protection, cleanliness, and energy saving. Consumer demand is more in line with the industrial and energy development strategies of various countries, and it will be the main means of transportation in the future. [0003] On the ...

AI Technical Summary

Problems solved by technology

Therefore, in recent years, it has become a development trend to use batteries for energy storage to achieve peak shaving and flat valley. In order to effectively reduce the line loss in the process, it is most effective to build in the urban distribution network area, but in the face of high land prices, it will inevitably Greatly increase the investment cost, and also restrict the construction of energy storage stations in the city

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