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Gravity compressed air energy storage system and working method thereof

A technology of compressed air energy storage and compressed air, applied in gas turbine installations, steam engine installations, machines/engines, etc., can solve problems such as low efficiency, and achieve the effects of high efficiency, good safety and strong safety

Pending Publication Date: 2020-06-05
CHINA HUANENG GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantages are: it needs to rely on large underground gas storage caverns, and the efficiency of traditional compressed air energy storage technology is slightly lower

Method used

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  • Gravity compressed air energy storage system and working method thereof

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment, and its content is explanation of the present invention rather than limitation:

[0029] figure 1 The gravity compressed air energy storage system of the present invention includes an air compression unit 1, an air expansion unit 2, an air storage chamber 6, a weight 7 and a generator 9;

[0030] The inlet of the air compression unit 1 is connected with an air intake device, the outlet of the air compression unit 1 is connected to the inlet of the air storage chamber 6 through the energy storage pipeline, the outlet of the air storage chamber 6 is connected to the inlet of the air expansion unit 2 through the energy release pipeline, and the outlet of the air expansion unit 2 It is connected with the generator 9; a heat exchange unit is arranged between the energy storage pipeline and the energy release pipeline.

[0031] The weight 7 is arr...

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Abstract

The invention discloses a gravity compressed air energy storage system and a working method thereof, and belongs to the technical field of energy storage. The device comprises an air compression unit,an air expansion unit, an air storage chamber, a weight and a generator; the inlet of the air compression unit is connected with an air inlet device, the outlet of the air compression unit is connected with the inlet of the air storage chamber through an energy storage pipeline, the outlet of the air storage chamber is connected with the inlet of the air expansion unit through an energy release pipeline, and the outlet of the air expansion unit is connected with the generator; a heat exchange unit is arranged between the energy storage pipeline and the energy release pipeline; the weight is arranged on the upper part of the air storage chamber and forms a piston-cylinder system with the air storage chamber; and a sealing device is arranged between the weight and the air storage chamber. According to the invention, the compressed air energy storage mode and the gravity energy storage mode are combined, and the advantages of high density of compressed air energy storage and flexible arrangement of gravity energy storage are both achieved, so that the stability of a power grid can be guaranteed, and the functions of peak regulation, frequency modulation, peak clipping and valley filling can be achieved.

Description

technical field [0001] The invention belongs to the technical field of energy storage, and in particular relates to a gravity compressed air energy storage system and a working method thereof. Background technique [0002] In recent years, with the support of national policies and continuous technological progress, new energy sources such as wind power and photovoltaics have grown rapidly. While new energy is developing rapidly, its installed capacity far exceeds the local consumption capacity, resulting in high wind and light curtailment rates in some areas, and renewable energy such as wind power and photovoltaics in large energy bases is intermittent. , volatility and other characteristics, resulting in the continuous decline of power grid regulation and anti-interference ability, which brings a series of major challenges to the consumption of new energy on the grid and the stable operation of the power grid. With such high proportions of variable generation, ensuring a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G3/00F01K13/00F01K7/02F01K27/00F01K21/00
CPCF03G3/00F01K13/00F01K7/02F01K27/00F01K21/00F01K25/10F01K3/12F02C6/16F01K27/02F03G3/094Y02E60/16
Inventor 文军徐若晨裴杰卢吉曹曦刘明义朱勇曹传钊朱连峻郑建涛李晴徐越
Owner CHINA HUANENG GRP CO LTD
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