Solid energy storage power generation system based on power grid

Abstract

The invention provides a solid energy storage power generation system based on a power grid, and relates to the technical field of energy resources. The system comprises a heavy-load railway built on a mountain slope, a motor generator arranged at the top end of the mountain slope, a heavy-load train connected with the motor generator through a steel cable, and a winch connected with the steel cable and connected with the motor generator through a rigid coupling, wherein the motor generator is used for towing the heavy-load train to the top end of the mountain slope under the action of the wind energy and the solar energy when the wind energy and the solar energy cannot be received by the power grid temporarily, so as to convert the wind energy and the solar energy into potential energy of the heavy-load train; and when the power grid is needed, the heavy-load train is released from the top end of the mountain slope to the downside of the mountain slope to ensure that the potential energy of the heavy-load train is converted into kinetic energy, and the kinetic energy is converted into electric energy which is transmitted into the power grid. The system provided by the invention makes full use of local resources and conditions to achieve storage of the wind energy and the solar energy, thereby providing favorable conditions for the power grid to consume and save green energy resources.

Description

technical field [0001] The present invention relates to the field of energy technology, in particular to the storage technology of green energy, and specifically to a grid-based solid energy storage power generation system. Background technique [0002] Green energy such as wind energy and solar energy is very important to the national "energy saving and emission reduction" strategy, but because such green energy is greatly affected by meteorological conditions, it cannot provide a continuous source of power, so the power grid cannot be normally accepted. The best way is to store wind energy and solar energy when the grid cannot accept them, and then release the stored energy when the grid needs it. In areas rich in wind energy and solar energy in my country, there is often a lack of water sources, so it is impossible to build large-scale pumped storage power stations to store wind energy and solar energy. [0003] At present, my country's wind energy and solar energy are d...

AI Technical Summary

Problems solved by technology

[0004] 1. The pumped-storage power station reservoir has a huge engineering volume, a lot of investment, and slow results

[0005] 2. The system of the pumped storage power station is complex, with many equipments, high technical requirements, and heavy maintenance workload of the unit

[0006] 3. In areas rich in wind energy and solar energy, water sources are very scarce, and water sources for pumped storage power plants cannot be solved nearby

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