Compressed air energy storage power station system and operation method

Abstract

The invention relates to the technical field of energy storage technologies, and discloses a compressed air energy storage power station system and an operation method. The operation method comprisesthe steps that a compressor communicates with a gas storage through the high-temperature side of a cooler, the gas storage communicates with a main expansion machine through the low-temperature side of a main heat regenerator, the cold end and the hot end of the low-temperature side of the cooler correspondingly communicate with a cold accumulator and a heat accumulator, the cold end and the hot end of the high-temperature side of the main heat regenerator correspondingly communicate with the cold accumulator and the heat accumulator, an auxiliary expansion machine is linked or disconnected through a shaft system of a coupling and the main expansion machine, two ends of the low-temperature side of an auxiliary heat regenerator correspondingly communicate with the gas storage and the auxiliary expansion machine, and two ends of the high-temperature side of the auxiliary heat regenerator correspondingly communicate with the heat accumulator and the cold accumulator. According to the compressed air energy storage power station system, the main expansion machine can be in a turning standby state without external energy consumption for a long time, so that a compressed air energy storage power station rapidly responds to the power generation dispatching, and the efficient phasing operation can be carried out.

Description

technical field [0001] The invention relates to the technical field of energy storage, in particular to a compressed air energy storage power station system and an operation method. Background technique [0002] Energy storage, especially electric energy storage, is of great significance to the optimization of energy structure and the regulation of power grid operation. Compressed air energy storage system is a new energy storage technology. [0003] The working principle of the compressed air energy storage power generation system is similar to that of pumped water storage. When the electricity consumption of the power system is at a low point, the system energy storage utilizes the surplus electricity in the system, and the compressor drives the air compressor to compress the air and compress the energy. The form of air is stored in the gas storage device; when the electricity load of the power system reaches a peak and the power generation is insufficient, the system rel...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a compressed air energy storage power station system and an operation method to solve the problems in the prior art that the compressed air energy storage power station system requires additional consumption of external power for long-term cranking and standby, and cannot respond quickly to power grid scheduling. Technical issues preventing efficient phasing operation

Images