Energy storage power station and energy storage method

Abstract

The invention discloses an energy storage power station, which comprises a solar photovoltaic module, a super capacitor, a lithium titanate battery, a two-way DC / DC converter and a DC / AC inverter, wherein the solar photovoltaic module is connected with the super capacitor; the super capacitor is connected with the two-way DC / DC converter and the DC / AC inverter through a first controller; the two-way DC / DC converter is connected with the lithium titanate battery; and the DC / AC inverter is connected to a power grid. According to the technical scheme, cooperative electric energy storage is carried out by the super capacitor and the lithium titanate battery; the electric energy received and converted by the solar photovoltaic module can be stored into the super capacitor and the lithium titanate battery when the power utilization demand is quite low respectively; the electric energy in the power grid can be transmitted to the lithium titanate battery for unexpected needs through the super capacitor; the electric energy can be transmitted to the power grid through the super capacitor during peak hours; and the electric energy which is stored in the lithium titanate battery in advance is supplemented to the super capacitor, so that the super capacitor has continuous transmission capacity.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to an energy storage power station and an energy storage method. Background technique [0002] In the prior art, photovoltaic power generation is more and more widely used. Photovoltaic power generation is based on the principle of photovoltaic effect, using solar cells to directly convert sunlight energy into electrical energy. Regardless of whether it is used independently or connected to the grid for power generation, the photovoltaic power generation system is mainly composed of three parts: solar panels (components), controllers and inverters, which are mainly composed of electronic components. However, photovoltaic power generation is greatly affected by the weather. Photovoltaic power generation can only be carried out during the daytime. During the peak power consumption at night, photovoltaic power plants cannot generate electricity, so it is impossi...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of the photovoltaic power generation equipment in the prior art that the electric energy storage is small, so that the supercapacitor cannot continue to play a buffering role on the current, and the service life of the energy storage device is short

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