CN105927390A - Compressed air energy storage power generation system - Google Patents
Compressed air energy storage power generation system Download PDFInfo
- Publication number
- CN105927390A CN105927390A CN201610477332.8A CN201610477332A CN105927390A CN 105927390 A CN105927390 A CN 105927390A CN 201610477332 A CN201610477332 A CN 201610477332A CN 105927390 A CN105927390 A CN 105927390A
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- Prior art keywords
- holding vessel
- pipeline
- compressed air
- air
- heat exchanging
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- 238000004146 energy storage Methods 0.000 title claims abstract description 20
- 238000010248 power generation Methods 0.000 title abstract description 4
- 230000005611 electricity Effects 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 claims description 27
- 238000007667 floating Methods 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000003860 storage Methods 0.000 abstract description 18
- 230000008859 change Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 9
- 238000002955 isolation Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
- F02C7/10—Heating air supply before combustion, e.g. by exhaust gases by means of regenerative heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/14—Gas-turbine plants having means for storing energy, e.g. for meeting peak loads
- F02C6/16—Gas-turbine plants having means for storing energy, e.g. for meeting peak loads for storing compressed air
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
An energy storage power generation system for meeting the requirement of electric power system peak load adjustment is used for storing energy through wave-trough electricity during electricity utilization wave-trough of a power grid, and generating electricity during electricity utilization wave-crest so as to adjust and control the wave-trough and the wave-crest of the power grid. A heat exchange device is arranged in an air energy storage tank, and the position of a heat exchange pipeline in the heat exchange device can be changed according to the change of a water level of the air energy storage tank, so that the influence on following parts of the power generation system by storage water volatilization caused by compressed air heating is avoided.
Description
Technical field
The present invention relates to a kind of energy-storage generating apparatus, be especially for meeting the gas turbine energy-storing and power-generating system of peak load regulation.
Background technology
Power industry as social foundation's industry, is one of the lifeblood industry of national development.Along with China's economic society high speed development, electricity needs is growing, and China electric power industry construction enters fast-developing period.Along with scientific and technological progress and the promotion of social need, electrical network just from traditional defeated, become, distribution accelerate to meet social resources and distribute the energy carrying as major function rationally, the platform of energy game develops.Under the overall background of Energy restructuring, along with power system is the highest to the requirement of the conditions such as safe efficient, stable operation, a brand-new stage intelligent grid is gradually stepped in the development of China's electrical network.Therefore, build usefulness height, invest the intelligent grid of strain low, safe and reliable, flexible and become the developing direction of China's electrical network.
Intelligent grid is a hybrid system having gathered multiple contemporary advanced, these technology include Power Electronic Technique, information technology, energy storage technology, sensing measurement technology etc., and energy storage technology is the most vital ring, it is significant in intelligent grid: 1) can effectively smooth load curve and peak-valley difference round the clock, it is achieved dsm；2) regulation mains frequency, stabilizes the fluctuation of load, safeguards system stable operation；3) user side accessory power supply, improves the quality of power supply and power supply reliability；4) optimize the configuration using of regenerative resource, promote regenerative resource exploitation.
Compressed air energy storage technology is a kind of energy storage technology of current relatively broad application, its cardinal principle utilizes the dump power of power system load low-valley interval to be compressed air operation, and be stored in high pressure sealing facility, discharge to drive gas turbine power generation in the load peak period.The advantages such as compressed air energy storage technology has low cost, and safety is higher, reliable, life-span length.
Typical compressed-air energy-storage system in prior art, such as the patent of invention of 200710098467.4, including compressor, gas storage, combustor, gas turbine and electromotor；When electric load low ebb, utilizing electrical network electrical energy drive motor, motor driven compressor compressed air sends into gas storage；When electric load peak, gas storage the compressed air discharged combustion gas after combustion chambers burn enters gas turbines driving generators generating, and electric energy is sent into electrical network.But, such compressed-air energy-storage system, along with the discharge of gas storage compressed air, its air pressure is gradually lowered, thus causes the efficiency of gas turbine to decline.Improvement as prior art, 200780031109.X propose the compressed air energy storage power generating system of a kind of constant voltage, its air accumulator includes two air accumulators connected by hydraulic pump/motor, between two air accumulators, storage water is set, flowed between two air accumulators by hydraulic pump control storage water, thus the volume changing aerofluxus air accumulator is stablized with guarantee pressure, thus ensure that the stabilised efficiency of gas turbine.But, in the technical scheme of this improvement, owing to introducing storage water in air accumulator, it may volatilize in exhaust process, thus increase compressed-air actuated moisture, cause corrosion or degeneration that downstream gas turbine, heat exchanger, tubing or instrument cause due to moisture.
In order to solve the problems referred to above, applicant proposed the invention of the compressed-air energy-storage system of improvement, the sealing isolation layer of solid-state or liquid is set between the compressed air and storage water termination of constant-pressure gas storage tank, heat-exchanger rig is set in transformation air accumulator simultaneously, reduce the temperature impact that the contracting of transformation air accumulator hollow air pressure causes, thus reduce the impact that temperature is evaporated for water.But, owing to the water level in transformation air accumulator is change, after the water level storing water is higher than heat-exchanger rig height, it will affect heat-exchanger rig for compressed-air actuated cooling.
Summary of the invention
As one aspect of the present invention, it is provided that a kind of compressed air energy-storing electricity electricity generation system, including: compressor, the first holding vessel, the second holding vessel, hydraulic pump/motor, gas turbine and electromotor；Described compressor, for being compressed by motor-driven and by atmospheric air when energy storage；Described first holding vessel, it is provided with air intake and air outlet slit, can be accepted the compressed air of compressor by air intake, can compressed air be discharged by air outlet slit；Described second holding vessel, is connected with described first holding vessel by connecting pipeline；Described hydraulic pump/motor, is arranged at described connecting pipeline, according to hydraulic pump/motor described in the pressure operation of described first holding vessel, so that described first holding vessel keeps constant voltage；Described gas turbine, utilize first holding vessel discharge compressed air and fuel combustion after burning gases drive；Described electromotor, is generated electricity by the driving of described gas turbine；It is characterized in that: also include heat-exchange system；Described heat-exchange system includes: the first coaxial pipeline and the second pipeline；Heat exchanging pipe, described heat exchanging pipe is connected with described first pipeline and the second pipeline, and the most coaxial with described first pipeline and the second pipeline, and can rotate around the axis at described first pipeline and the second pipeline place；Floating unit, described floating unit is arranged at below described heat exchanging pipe, when the water level of described second holding vessel rises, it is possible to promote described heat exchanging pipe to rotate up, so that described heat exchanging pipe is positioned on the water level of the second holding vessel.
Preferably, described floating unit is floating plate, and it can provide the buoyancy more than described heat exchanging pipe gravity.
Preferably, described heat-exchange system communicates with cooling medium carrier, it is possible to by described cooling medium carrier to described heat exchanger tube conveying cooling medium, thus the temperature of air in reducing the second holding vessel.
Preferably, described cooling medium is air or water.
As another aspect of the present invention, it is provided that a kind of intelligent grid electric load energy storage dispatching patcher, it includes above-mentioned compressed air energy-storing electricity electricity generation system.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the compressed air energy-storing electricity electricity generation system of one embodiment of the invention.
The situation of change schematic diagram of heat exchanging pipe when Fig. 2 is that in the embodiment of the present invention, the second holding vessel is in different water level.
Detailed description of the invention
The most according to specific exemplary embodiment, invention has been described.Carrying out suitable replacement without departing from the scope of the invention or amendment will be apparent to one skilled in the art.Exemplary embodiment is merely illustrative rather than limiting the scope of the present invention, and the scope of the present invention be defined by the appended.
The compressed air energy-storing electricity electricity generation system of first embodiment of the invention, sees Fig. 1, including compressor 1, cooler 2, first holding vessel 3, hydraulic pump/motor 4, the second holding vessel 5, dehydrating unit 6, heat exchanger 7, combustor 8, gas turbine 9, electromotor 10 and heat-exchanger rig.
Extraneous air is compressed thus stores electric power by compressor 1, when power load low ebb, utilizes low ebb electrically-driven compressors 1 to operate by motor, thus stores the energy in compressed air.Compressor 1 can be single compressor or the compressor bank including compound compressor.
Air temperature after being compressed raises, the cooler 2 air cooling-down after will heat up, thus is pressed into compressed air storage tank.Compressed air storage tank includes the first holding vessel 3, hydraulic pump/motor 4 and the second holding vessel 5.First holding vessel 3 and the second holding vessel 5 are rigid container, compressed air storage tank accommodates storage water simultaneously, it is by pressure differential or hydraulic pump drive between the second holding vessel 5 and the first holding vessel 3, it is thus possible to flow between the second holding vessel 5 and the first holding vessel 3, the pressure keeping the first holding vessel 3 is constant.
First holding vessel 3 has compressed air inlet 31 and compressed air outlet 32.In the electricity consumption trough energy storage stage, when the first holding vessel 3 receives compressed air by compressed air inlet 31, hydraulic pump uses trough electricity as the energy source of fluid power motor, storage water is transported in the second holding vessel 5, thus increase the receiving compressed air volume in the first holding vessel 3, keep the pressure in the first holding vessel 3 constant.The energy stage is released at electricity consumption crest, compressed air is discharged by compressed air outlet 32 at the first holding vessel 3, by the pressure differential between the second holding vessel 5 and the first holding vessel 3, storage water is transported in the first holding vessel 3, thus reduce the receiving compressed air volume in the first holding vessel 3, keep the pressure in the first holding vessel 3 constant；Storage water simultaneously drives electromotor in moving process and generates electricity.By monitoring the atmospheric pressure in the first holding vessel 3, thus hydraulic pump/motor 4 can be controlled.
Heat-exchanger rig includes cooling medium carrier 12, first pipeline the 13, second pipeline 14, heat exchanging pipe 15 and floating unit 16.Cooling medium carrier 12 carries cooling medium for the second holding vessel 5, and this cooling medium can be by heat exchanging pipe 15 and air heat-exchange in holding vessel such that it is able to reduce the temperature of air in the second holding vessel 5.Cooling medium can be water or air, and when cooling medium is water, cooling medium carrier 12 can be delivery pump, and when cooling medium is air, cooling medium carrier 12 can be such as air blast pump.
First pipeline 13 is cooling medium intake line, and the second pipeline 14 is cooling medium output pipe, and the first pipeline 13 and the second pipeline 14 are coaxially disposed.Heat exchanging pipe 15 is connected with the first pipeline 13 and the second pipeline 14 respectively, and it is the most coaxial with the first pipeline 13 and the second pipeline 14, and can rotate around the axis at the first pipeline 13 and the second pipeline 14 place when receiving active force, it is possible to use such as movable threaded realization.
As in figure 2 it is shown, the change in location of heat exchanging pipe 15 when the second holding vessel is in different water level.Floating unit 16 is arranged at below heat exchanging pipe 15, and it uses the density material manufacture less than water, it is possible to provide active force upwards by buoyancy；When the water level of the second holding vessel 5 rises, floating unit 16 rises therewith, it is possible to promote heat exchanging pipe 15 to rotate up, so that heat exchanging pipe 15 is positioned on the water level of the second holding vessel 5；When the water level decreasing of the second holding vessel 5, floating unit 16 declines therewith, and heat exchanging pipe 15 is rotated down back in situ due to action of gravity.
When trough energy storage, the air in the second holding vessel 5 is compressed thus temperature raises, and opens cooling media transporter 12, by heat exchanging pipe 15 by the air cooling-down in the second holding vessel 5；When compressed air energy-storing electricity electricity generation system generates electricity at electricity consumption crest, close cooling medium carrier.
When crest generates electricity, heat exchanger 7 exports stream with the weary gas of compressed air stream and gas turbine respectively and communicates, and is heated compressed air by the weary gas of the output of gas turbine wherein, thus improves the efficiency of combustor.After combustor 8 is arranged at heat exchanger 7, compressed air is burnt in combustor 8 with fuel, thus exports combustion gas.Output combustion gas is transported to gas turbine 9, drives gas turbine 9 to make coupled electromotor 10 generate electricity.
In order to remove the moisture in compressed air further, dehydrating unit 6 can be set in compressed air energy-storing electricity electricity generation system.Dehydrating unit 6 is arranged at the rear end pipeline of the air outlet slit 32 of the first holding vessel 3, for removing the moisture in compressed air further, thus ensures that subsequent parts is not affected by moisture.Dehydrating unit 6 can use at least one included in desiccant or ethylene glycol；Optionally, dehydrating unit 6 includes condenser, removes the moisture in compressed air by the way of condensation.Preferably, isolation layer can be set between the compressed air interface of the first holding vessel 3 and storage water termination, thus reduce the volatilization storing water.Isolation layer can be solid isolation layer or fluid isolation layer.Solid isolation layer is the isolated element that freely up and down can move along the first holding vessel 3 axis, and it could be arranged to " work " shape, and bottom is sealing member, preferably can arrange heat insulation layer on the low part of the sealing of isolated element.
Below being only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment, and all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.For those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be regarded as falling into protection scope of the present invention.
Claims (3)
1. a compressed air energy-storing electricity electricity generation system, including: compressor, the first holding vessel, the second holding vessel, hydraulic pump/motor, gas turbine and electromotor；Described compressor, for being compressed by motor-driven and by atmospheric air when energy storage；Described first holding vessel, it is provided with air intake and air outlet slit, can be accepted the compressed air of compressor by air intake, can compressed air be discharged by air outlet slit；Described second holding vessel, is connected with described first holding vessel by connecting pipeline；Described hydraulic pump/motor, is arranged at described connecting pipeline, according to hydraulic pump/motor described in the pressure operation of described first holding vessel, so that described first holding vessel keeps constant voltage；Described gas turbine, utilize first holding vessel discharge compressed air and fuel combustion after burning gases drive；Described electromotor, is generated electricity by the driving of described gas turbine；It is characterized in that: also include heat-exchanger rig；Described heat-exchanger rig includes: the first coaxial pipeline and the second pipeline；Heat exchanging pipe, described heat exchanging pipe is connected with described first pipeline and the second pipeline, and the most coaxial with described first pipeline and the second pipeline, and can rotate around the axis at described first pipeline and the second pipeline place；Floating unit, described floating unit is arranged at below described heat exchanging pipe, when the water level of described second holding vessel rises, it is possible to promote described heat exchanging pipe to rotate up, so that described heat exchanging pipe is positioned on the water level of the second holding vessel.
Compressed air energy-storing electricity electricity generation system the most according to claim 1, it is characterised in that: described floating unit is floating plate, and it can provide the buoyancy more than described heat exchanging pipe gravity.
3. an intelligent grid electric load energy storage dispatching patcher, it includes the compressed air energy-storing electricity electricity generation system described in claim 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610477332.8A CN105927390B (en) | 2016-06-27 | 2016-06-27 | A kind of compressed air energy-storing electricity electricity generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610477332.8A CN105927390B (en) | 2016-06-27 | 2016-06-27 | A kind of compressed air energy-storing electricity electricity generation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105927390A true CN105927390A (en) | 2016-09-07 |
| CN105927390B CN105927390B (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610477332.8A Expired - Fee Related CN105927390B (en) | 2016-06-27 | 2016-06-27 | A kind of compressed air energy-storing electricity electricity generation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110199149A (en) * | 2016-12-02 | 2019-09-03 | 通用电气公司 | Method and system for the carbon dioxide energy storage in electricity generation system |
| WO2020255086A1 (en) * | 2019-06-19 | 2020-12-24 | Pascal Lalanne | Thermoelectric device for storage or conversion of energy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5386687A (en) * | 1992-04-21 | 1995-02-07 | Asea Brown Boveri Ltd. | Method of operating a gas turbine group |
| CN101289963A (en) * | 2007-04-18 | 2008-10-22 | 中国科学院工程热物理研究所 | Compressed-air energy-storage system |
| CN101506469A (en) * | 2006-08-21 | 2009-08-12 | 韩国机械研究院 | Compressed-air-storing electricity generating system and electricity generating method using the same |
| US20120042643A1 (en) * | 2009-05-07 | 2012-02-23 | Etienne Lebas | Method and apparatus for storing mechanical energy by quasi-isothermal expansion and compression of a gas |
| CN102686850A (en) * | 2009-09-23 | 2012-09-19 | 布莱特能源存储科技有限责任公司 | Underwater compressed fluid energy storage system |
-
2016
- 2016-06-27 CN CN201610477332.8A patent/CN105927390B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5386687A (en) * | 1992-04-21 | 1995-02-07 | Asea Brown Boveri Ltd. | Method of operating a gas turbine group |
| CN101506469A (en) * | 2006-08-21 | 2009-08-12 | 韩国机械研究院 | Compressed-air-storing electricity generating system and electricity generating method using the same |
| CN101289963A (en) * | 2007-04-18 | 2008-10-22 | 中国科学院工程热物理研究所 | Compressed-air energy-storage system |
| US20120042643A1 (en) * | 2009-05-07 | 2012-02-23 | Etienne Lebas | Method and apparatus for storing mechanical energy by quasi-isothermal expansion and compression of a gas |
| CN102686850A (en) * | 2009-09-23 | 2012-09-19 | 布莱特能源存储科技有限责任公司 | Underwater compressed fluid energy storage system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110199149A (en) * | 2016-12-02 | 2019-09-03 | 通用电气公司 | Method and system for the carbon dioxide energy storage in electricity generation system |
| CN110199149B (en) * | 2016-12-02 | 2021-12-28 | 通用电气公司 | Method and system for carbon dioxide energy storage in power generation systems |
| WO2020255086A1 (en) * | 2019-06-19 | 2020-12-24 | Pascal Lalanne | Thermoelectric device for storage or conversion of energy |
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| Publication number | Publication date |
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| CN105927390B (en) | 2017-11-28 |
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