Photovoltaic, energy storage and charging integrated power station system

Abstract

The invention discloses a photovoltaic, energy storage and charging integrated power station system. The system comprises a photovoltaic module, an energy storage module and a charging module, the photovoltaic module, the energy storage module and the charging module are connected to the same power distribution line to form a micro-grid, the micro-grid has the capability of being connected to a mains supply system, the photovoltaic module is used for photovoltaic power generation, the energy storage module is used for energy storage and supplementary discharging, the charging module is used for charging external equipment, electric quantity generated by the photovoltaic module is transmitted to one or more of the energy storage module, the charging module and a commercial power system, electric quantity output by discharging of the energy storage module is transmitted to the charging module, and energy storage is carried out through the commercial power system when the commercial power system is in a valley value electricity price period; and when the commercial power system is in a peak electricity price period, the charging module preferentially adopts the photovoltaic module for power supply, and then adopts the energy storage module and / or the commercial power system for supplementary power supply. According to the photovoltaic, energy storage and charging integrated power station system provided by the invention, the charging station is supplied with power through photovoltaic power, energy storage and commercial power, so that the power shortage in the peak period of power utilization is greatly relieved.

Description

technical field [0001] The invention relates to the technical field of charging and discharging of energy storage power stations, in particular to a power station system integrating light, storage and charging. Background technique [0002] The development of new energy vehicles is the only way for my country to move from a big automobile country to a powerful automobile country, and it is a strategic measure to deal with climate change and promote green development. Among them, solving the charging problem is the core of the development of my country's new energy automobile industry. Since 2012, my country's new energy automobile industry has made great achievements and has become one of the important forces in the development and transformation of the world's automobile industry. As a key supporting facility for new energy vehicles, charging piles have received high attention from policy and the market. Since 2015, the state and local government departments have issued m...

AI Technical Summary

Problems solved by technology

At present, the construction of charging piles mainly relies on the public power grid. If the transformer capacity of the public power grid is insufficient or the access point is too far away, it cannot meet the construction needs of charging piles.

[0006] 2. Power consumption has a huge impact on the power grid

When electric vehicles are charged in a centralized manner, it may lead to insufficient grid capacity and affect the power balance of the entire power system

In addition, the common charging of different electric vehicles will also have a huge impact on the power quality of the public grid, threatening the safe and stable operation of the grid

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