CN101289963A - Compressed-air energy-storage system - Google Patents

Compressed-air energy-storage system Download PDF

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Publication number
CN101289963A
CN101289963A CNA2007100984674A CN200710098467A CN101289963A CN 101289963 A CN101289963 A CN 101289963A CN A2007100984674 A CNA2007100984674 A CN A2007100984674A CN 200710098467 A CN200710098467 A CN 200710098467A CN 101289963 A CN101289963 A CN 101289963A
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CN
China
Prior art keywords
storage
compressed
compressor
pressure
pressure turbine
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CNA2007100984674A
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Chinese (zh)
Inventor
谭春青
张冬阳
王会社
陈海生
许剑
陈重韬
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中国科学院工程热物理研究所
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Application filed by 中国科学院工程热物理研究所 filed Critical 中国科学院工程热物理研究所
Priority to CNA2007100984674A priority Critical patent/CN101289963A/en
Publication of CN101289963A publication Critical patent/CN101289963A/en

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    • Y02E60/15

Abstract

The invention discloses a compressed air energy storage system, in particular to a compressed air energy storage system for an electric power system. The compressed air energy storage system disclosed by the invention has reasonable structure, flexible layout, high energy conversion efficiency, good economical efficiency and peakload regulation performance, rapid startup, safety and reliability. The compressed air energy storage system applying the invention can be used for despicking and valley filling of the electric power system, energy storage of renewable energy source and power supply when the renewable energy source is in supply intermission or in shortage in an electric network, and can be used as an emergency power station, an energy accumulator of distributed energy resource and other equipment for electric power energy storage.

Description

Compressed-air energy-storage system

Technical field

The present invention relates to the energy storage technology field, is a kind of compressed-air energy-storage system, specifically, is a kind of compressed-air energy-storage system that is used for electric power system.

Background technique

Compressed-air energy-storage system utilize electric energy pressurized air and be stored in underground or ground upper chamber in, in needs output electric energy, pressurized air is emitted, heating and burning also drive turbine power generation.In the People's Republic of China (PRC), the compressed-air energy storage power station of also not putting into operation does not so far see that the design method in compressed-air energy storage power station is announced yet.

Summary of the invention

The present invention proposes a kind of compressed-air energy-storage system, can be used for the compressed-air energy storage power station, improve electrical network efficient.

For achieving the above object, technology solution of the present invention is: a kind of compressed-air energy-storage system comprises motor, compressor, aftercooler, gas storage, regenerator, generator, high pressure turbine, low-pressure burner, low pressure turbine; Its motor links to each other with compressor, and compressor, aftercooler, gas storage are linked in sequence and communicate, and high pressure turbine links to each other with generator, and high pressure turbine, low-pressure burner, low pressure turbine communicate with the regenerator series connection and form the hot junction gas flow path;

Utilize electrical network electric energy drive motor, motoring compressor compresses atmosphere, pressurized air is sent into gas storage after the aftercooler cooling; When needing, emit high-pressure air to regenerator by gas storage, high-pressure air is in regenerator, and by turbine exhaust heating, the pressurized air after the heating is sent into turbine and driven generator for electricity generation, and electric energy is sent into electrical network.

Described compressed-air energy-storage system, its described gas storage or be arranged in geological stratification, or be positioned on the ground.

Described compressed-air energy-storage system, its described geological stratification is salt grotto, karst cave, water-bearing layer.

Described compressed-air energy-storage system, its described compressor is at least one.

Described compressed-air energy-storage system, it can be provided with the compressor interstage cooler between every two adjacent compressors.

Described compressed-air energy-storage system, its described high pressure turbine, low-pressure burner, low pressure turbine are connected with regenerator in the gas flow path of forming that communicates, and also have high compression combustion chamber, and high compression combustion chamber is positioned at the high pressure turbine front end.

Description of drawings

Fig. 1 is the design method schematic representation of no high compression combustion chamber of the present invention and compressor interstage cooler;

Fig. 2 is the design method schematic representation with high compression combustion chamber and compressor interstage cooler of the present invention;

Embodiment

Below in conjunction with the drawings and specific embodiments the present invention is done and to describe in further detail.

Embodiment 1: the compressed-air energy-storage system that Figure 1 shows that no high compression combustion chamber of the present invention and compressor interstage cooler.This compressed-air energy-storage system mainly is made up of parts such as motor 1, compressor 2, aftercooler 3, gas storage 4, regenerator 5, generator 6, high pressure turbine 7, low-pressure burner 8, low pressure turbines 9.Wherein, motor 1, compressor 2, aftercooler 3, gas storage 4 orders connection routinely communicate, and high pressure turbine 7, low-pressure burner 8, low pressure turbine 9, regenerator 5 connect the composition stream that communicates routinely, and high pressure turbine 7 links to each other with generator 6.

Utilize electrical network electric energy drive motor, motor 1 Driven Compressor 2 compressed atmosphere 10, pressurized air is sent into gas storage 4 after aftercooler 3 coolings; Gas storage 4 can be built in underground, can be rock salt hole, karst cave, water-bearing layer, or be arranged in other geological stratification, also can be positioned on the ground; When needing, emit high-pressure air to regenerator 5 by gas storage 4, high-pressure air is in regenerator 5, and by turbine exhaust heating, the pressurized air after the heating sends into high pressure turbine 7 and low pressure turbine 9 drives generator 6 generatings, and electric energy is sent into electrical network.Low-pressure burner 8 provides heat for the gas in high pressure turbine 7 and the low pressure turbine 9.Generator 6 can separate with motor 1, also can be one.

Embodiment 2: be illustrated in figure 2 as the compressed-air energy-storage system with high compression combustion chamber and compressor interstage cooler of the present invention.This compressed energy-storage system mainly is made up of parts such as motor 1, low pressure compressor 11, high pressure compressor 12, compressor intercooler 13, aftercooler 3, gas storage 4, regenerator 5, generator 6, high compression combustion chamber 14, high pressure turbine 7, low-pressure burner 8, low pressure turbines 9.The coupled condition of its motor 1, low pressure compressor 11, high pressure compressor 12, aftercooler 3, gas storage 4, regenerator 5, high compression combustion chamber 14, low-pressure burner 8, high pressure turbine 7 and low pressure turbine 9, generator is substantially the same manner as Example 1.

Difference is that at least two compressors (high pressure, low pressure compressor) serial connection is arranged, and is provided with compressor intercooler between two compressors; With in high pressure turbine, low-pressure burner, low pressure turbine are connected the stream that communicates routinely, between regenerator and high pressure turbine, also be provided with high compression combustion chamber at regenerator.

Cooler also can be zero in the compressor stage, and along with the increase of compressor number, cooler can be two in the compressor stage, or a plurality of.

Claims (6)

1, a kind of compressed-air energy-storage system comprises motor, compressor, aftercooler, gas storage, regenerator, generator, high pressure turbine, low-pressure burner, low pressure turbine; It is characterized in that motor links to each other with compressor, compressor, aftercooler, gas storage are linked in sequence and communicate, and high pressure turbine links to each other with generator, and high pressure turbine, low-pressure burner, low pressure turbine communicate with the regenerator series connection and form the hot junction gas flow path;
Utilize electrical network electric energy drive motor, motoring compressor compresses atmosphere, pressurized air is sent into gas storage after the aftercooler cooling; When needing, emit high-pressure air to regenerator by gas storage, high-pressure air is in regenerator, and by turbine exhaust heating, the pressurized air after the heating is sent into turbine and driven generator for electricity generation, and electric energy is sent into electrical network.
2, compressed-air energy-storage system as claimed in claim 1 is characterized in that, described gas storage or be arranged in geological stratification, or be positioned on the ground.
3, compressed-air energy-storage system as claimed in claim 2 is characterized in that, described geological stratification is salt grotto, karst cave, water-bearing layer.
4, compressed-air energy-storage system as claimed in claim 1 is characterized in that, described compressor is at least one.
5, compressed-air energy-storage system as claimed in claim 4 is characterized in that, is provided with the compressor interstage cooler between every two adjacent compressors.
6, compressed-air energy-storage system as claimed in claim 1 is characterized in that, described high pressure turbine, low-pressure burner, low pressure turbine are connected with regenerator in the gas flow path of forming that communicates, and also have high compression combustion chamber, and high compression combustion chamber is positioned at the high pressure turbine front end.
CNA2007100984674A 2007-04-18 2007-04-18 Compressed-air energy-storage system CN101289963A (en)

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Application Number Priority Date Filing Date Title
CNA2007100984674A CN101289963A (en) 2007-04-18 2007-04-18 Compressed-air energy-storage system

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US7958731B2 (en) 2009-01-20 2011-06-14 Sustainx, Inc. Systems and methods for combined thermal and compressed gas energy conversion systems
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