Solar power plant with pumped hydro storage

Abstract

The invention discloses a solar power station with water pumping and energy storage. The solar power station comprises a plurality of solar cell panels and inverters, the solar cell panels are used for converting solar energy into electric energy, and the inverters are connected with the solar cell panels of all arrays, receive power grid dispatching and can directly transmit the electric energy to a power grid. The solar cell panels are further connected with controllers through the inverters, the controllers receive the power grid and control alternating current motors to be started or stopped, the alternating current motors are connected with water pumps, low-position closed water storage pool water is conveyed to a high-position water fort through the water pumps, the high-position water fort is connected with a hydroelectric generator through a pipeline, and the hydroelectric generator is connected to the power grid. The sufficient solar energy at daytime is used in the solar cell panel arrays, according to the power grid dispatching, on one hand, electricity is transmitted to the power grid through the inverters, on the other hand, the water pumps are driven by the alternating current motors to convey the water from a low-position water reservoir to the high-position water reservoir, and therefore the solar energy is converted into the potential energy of the water to be stored.

Description

technical field [0001] The invention relates to a solar energy storage device, in particular to a solar power station with pumped energy storage. Background technique [0002] For a long time, in order to meet the requirements of electric load, the power sector has to build power generation capacity according to the maximum load requirement. On the one hand, this has caused a large amount of surplus and waste of power generation capacity. On the other hand, the power sector has to often limit power consumption during peak hours of power consumption. Therefore, there is an urgent need for an economical, reliable and efficient power storage system to match it. More importantly, the electric energy storage system is currently one of the most important bottlenecks restricting the large-scale utilization of renewable energy. At present, the main renewable energy sources, such as wind energy, solar energy, tidal energy, etc., are all intermittent energy sources. How to use energ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that solar energy intermittently occurs and a large amount of solar energy cannot be utilized, the present invention provides a pumped energy storage solar power station, which uses sufficient solar energy during the day to send water from a low-level closed storage tank to a high-level water tank through a water pump. Fort, so that the potential energy of solar energy into water is stored. When the solar energy cannot be used at night, the water is discharged from the high-level water fort to the low-level closed storage tank to drive the hydroelectric generator to generate electricity.

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