A multi-stage compression method for compressed air energy storage
A compressed air energy storage and compression method technology, which is applied in the direction of multi-stage pumps, steam engine devices, liquid variable capacity machinery, etc., can solve the problems of reduced efficiency of air compressor units, so as to save energy consumption, reduce production costs, and improve efficiency Effect
Active Publication Date: 2018-10-30
ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER +3
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Problems solved by technology
[0006] The purpose of the present invention is to provide a compressed air energy storage multi-stage compression method to solve the technical problem that the efficiency of the air compressor unit in the compressed air energy storage system drops when it deviates from the working condition
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[0025] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly. Apparently, the described embodiments are some, not all, embodiments of the present invention.
[0026] figure 1 It is a system flow diagram of a preferred embodiment of the compressed air energy storage multi-stage compression method in the embodiment of the present invention; figure 2 It is a pressure curve diagram of a preferred embodiment of the compressed air energy storage multi-stage compression method in the embodiment of the present invention.
[0027] see figure 1 and figure 2 , the compressed air energy storage multi-stage compression method provided by the embodiment of the present invention can solve the technical problem that the...
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The invention relates to the technical field of compressed air energy storage, in particular to a compressed air energy storage multistage compression method. The method comprises the following steps:normal-pressure air is input in an air storage chamber after three times of compression by a first-grade air compressor, a second-grade air compressor and a third-grade air compressor; the first-grade air compressor and the second-grade air compressor are driven through a fixed-frequency driver; the third-grade air compressor is driven through a variable frequency driver; the air storage pressurerange of the air storage chamber is from 9.835 MPa to 13.3 MPa; the lowest air storage pressure of the air storage chamber is higher than the exhaust pressure of the second-grade air compressor; thehighest air storage pressure of the air storage chamber is equal to the highest exhaust pressure of the third-grade air compressor; and the first-grade air compressor, the second-grade air compressorand the third-grade air compressor are serially connected in sequence. The compressed air energy storage multistage compression method enables system equipment to approach an optimal working state tothe greatest extent, so that a lot of energy consumption is saved, the equipment service life is prolonged, the compressed air preparation efficiency is improved, and the production cost is reduced.
Description
technical field [0001] The invention relates to the technical field of compressed air energy storage, in particular to a multistage compression method for compressed air energy storage. Background technique [0002] Energy storage technology, especially the storage of electric energy, is of great significance to the optimization and regulation of energy systems. Compressed air energy storage technology uses air as an energy storage medium to store electrical energy. [0003] When storing energy, the air compressor unit sucks air from the atmosphere driven by the motor, and the air is compressed step by step from an atmospheric pressure to 10MPa-30MPa, and the electric energy is stored in the air storage chamber in the form of high-pressure air; when generating electricity, the high-pressure air It is released from the air storage chamber and enters the air turbine to do work, driving the generator to output electricity, and the air potential energy is converted into electri...
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IPC IPC(8): F01K7/02F01D15/10F04B25/00
CPCF01D15/10F01K7/02F04B25/00
Inventor 梅生伟薛小代陈来军卢强
Owner ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER