Compressed air energy storage and power generation integrated system based on wind and light complementation

Abstract

The invention provides a compressed air energy storage and power generation integrated system based on wind and light complementation. The compressed air energy storage and power generation integrated system comprises a compressed air energy storage system part, a compressed heat storage system part, an expansion machine power generation system part and a solar heat storage system part; the compressed air energy storage system part comprises multiple stages of air compressors and an air storage tank; the compressed heat storage system part comprises cold tanks, hot tanks, first heat exchangers and second heat exchangers; the cold tanks are connected with the hot tanks through the first heat exchangers; and the hot tanks are connected with the cold tanks through the second heat exchangers. The compressed air energy storage and power generation integrated system further comprises a wind power generation system part; the wind power generation system part drives the air compressors to work, compressed air passes through the first heat exchangers, and then is stored in the air storage tank; the compressed air in the air storage tank is heated by the second heat exchangers and then high-temperature and high-pressure air is provided to expansion machines; and the solar heat storage system part provides heat to the air input to the expansion machines. The compressed air energy storage and power generation integrated system can utilize renewable energy sources, off-peak power is used in a peak period, and the functions of energy conservation and emission reduction are exerted.

Description

technical field [0001] The invention relates to the field of power generation equipment, in particular to an integrated system of air compression energy storage and power generation integrated with wind and solar power. Background technique [0002] At present, the existing electric energy storage systems include pumped storage power stations, compressed air energy storage systems, batteries, superconducting magnetic energy, etc. Among them, pumped storage and compressed air energy storage systems are two types of systems that are more suitable for large-scale energy storage. Both have the characteristics of large storage energy and high output power. Although other forms of energy storage can also achieve the same purpose, relatively speaking, the initial investment is higher, the operating cost is higher, and the storage performance is not as good as the previous two energy storage methods. [0003] A traditional compressed air energy storage system (CAES system) power sta...

AI Technical Summary

Problems solved by technology

Burning of fossil fuels, consumes energy, pollutes the environment

Moreover, the existing compressed air energy storage system needs to drive the compressor to work through electricity, and store the electric energy as compressed air. When the electricity consumption peaks, the compressed air is converted into electric energy. In this process, a large amount of heat loss is generated, resulting in waste of energy

The traditional compressed air energy storage power station needs to be located in a geographical location with underground caves, so the construction is limited, and in order to increase the electric energy capacity of the compressed air energy storage system, the volume of the gas storage needs to be increased, which makes the compressed air Energy storage power stations have unusually strict requirements on gas storage conditions

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