CN103352760A - Compressed-air energy-storage power generation system using high temperature air-heat combined-storage apparatus - Google Patents
Compressed-air energy-storage power generation system using high temperature air-heat combined-storage apparatus Download PDFInfo
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- CN103352760A CN103352760A CN2013102720430A CN201310272043A CN103352760A CN 103352760 A CN103352760 A CN 103352760A CN 2013102720430 A CN2013102720430 A CN 2013102720430A CN 201310272043 A CN201310272043 A CN 201310272043A CN 103352760 A CN103352760 A CN 103352760A
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Abstract
The invention discloses a compressed-air energy-storage power generation system using a high temperature air-heat combined-storage apparatus. The system comprises a compression unit, the high temperature air-heat combined-storage apparatus and a turbine generator unit, wherein the inlet of the high temperature air-heat combined-storage apparatus is connected with the outlet of the compression unit, the outlet of the high temperature air-heat combined-storage apparatus is connected with the turbine generator unit, the compression unit is used for compressing air, the high temperature air-heat combined-storage apparatus is used for storing high-temperature high-pressure air compressed by the compression unit, and the high-temperature high-pressure air released by the high temperature air-heat combined-storage apparatus directly drives the turbine generator unit to output electrical work. Since the system employs the high temperature air-heat combined-storage apparatus, simultaneous storage of air and heat in the same storage apparatus is realized, separated storage of air and heat is not needed, and thus, the temperature of stored air can be increased, loss during energy transformation of the system is reduced, and power capability of high-pressure air is enhanced; meanwhile, the high temperature air-heat combined-storage apparatus can be used as a heat storage apparatus and output heat outwardly.
Description
Technical field
The present invention relates to the compressed-air energy storage power field, be specifically related to a kind of compressed air energy storage power generating system that adopts the hot Federal Reserve device of High Temperature Gas.
Background technique
The current challenge of facing of energy field, it is the through engineering approaches storage of energy, for solving a large amount of storage problems of energy, expended a large amount of manpower and financial resources, the energy and electric power system thirst for inventing the energy-storage system of a kind of high density, long lifetime, fast-response, pollution-free and reasonable price.
In recent years, the yielding capacity of electric power continues to increase in the world wide, the production scale of renewable energy sources (wind energy, solar energy etc.) and using scope increase with surprising rapidity, by the end of the end of the year 2010, China's wind-power electricity generation total installation of generating capacity is 44.7GW, and the solar electrical energy generation total installation of generating capacity is 0.86GW; 130GW and 200GW will be reached respectively by 2015 with the year two thousand twenty China wind-powered electricity generation total installation of generating capacity, the solar electrical energy generation total installed capacity will reach respectively 10GW and 50GW, but the power generation characteristics of this renewable energy sources is subject to the constraint of natural condition, characteristics are intermittent generating and unstability generating, take wind-powered electricity generation as example, China's wind-powered electricity generation unit average year utilized hour design load to be 2300h in 2012, and actual value is 1900h, indivedual even insufficient 1500h in area cause producing and abandon in a large number wind-powered electricity generation; Simultaneously, the construction of electric power Traffic network relatively lags behind, and the peak modulation capacity of electrical network is generally not enough, the electrical network of at present existing considerable scale is because the existence of peak power supply vacancy, have to take mandatory power cuts to limit consumption, this has hindered the development of productivity, and may bring social concern; At user side, the consumption of electric power is not constant within the time, and according to The National Electric Power Communication Center's statistics, the amplitude of China's network load " peak-valley difference " increases year by year.These problems have increased the complexity of present electric power system, have proposed great challenge for construction and the electric network security of intelligent grid, need new technology to solve the problems referred to above.
The electric power energy storage technology discharges generating with storage capacity and supplies with load by certain medium and technology store electrical energy when network load needs.In whole process, energy storage and to release can be that timesharing is carried out has namely realized storage and the application of energy, can realize the effect of " peak load shifting " and balance electric load, and energy storage technology can improve the electric energy quality, keeps power system stability; Intermittence characteristics in the time of can overcoming renewable energy sources and be connected to the grid with the coupling of renewable energy sources realize stable electric power output; Peak-valley difference according to electricity price is released energy storage capacity, can improve the Economy of energy storage.
Present existing energy storage technology comprises pumped storage, pressurized air, storage battery, flow battery, flywheel and super capacitor etc.Emphasis is considered the factors such as stored energy capacitance, response time, operating cost, cost of investment, life-span and environmental protection, and what put into operation in extensive (for example more than the 100MW) commercial power station so far only has two kinds in pumped storage and pressurized air power station.Pumped storage power station is utilized from peak electric power water is stored with the potential energy form, and when treating that electricity needs increases, the potential energy pushing generator group generating with water realizes accumulation of energy.The power station advantages such as maturation, capacity is large, energy storage time is long that possess skills of drawing water, but the power station of drawing water needs special geographical conditions, addressing is extremely harsh, and initial investment is huge, causes ecology and immigration problem, and limiting factor is more.
As a kind of system that can realize extensive and long-time store electrical energy, compressed-air energy-storage system is subject to the attention of various countries gradually.All there is the compressed-air energy storage power station in the developed countries such as Germany, the U.S., Japan, Italy just in process of construction.Working principle and the pumped storage of compressed air energy storage power generating system are similar, when the electricity consumption of electric power system was at a low ebb, system stored energy utilized the electric weight more than needed in the system, the driven compressor air compressor is stored in energy in the caisson with compressed-air actuated form with pressurized air; When the electric power system power load peaked the generated energy deficiency, energy was released by system, and caisson discharges the pressurized air in the gas storage space, drove the generator generating, had finished the conversion of electric energy-air potential energy-electric energy.
In order to improve the conversion ratio of electric energy, need to improve the acting ability of gas, traditional compressed-air energy storage mode needs outer thermal source heated compressed air or by the extra additional heat of fuel combustion; Adopt the compressed-air energy storage mode of backheat form, the heat of compression is saved as the heat energy of intermediate medium, by the backheat form, heat is fed back to turbine side gas improve the compressed air to do work ability.
Traditional compressed air energy storage power generating system needs the gas thermal release that will obtain.Adopt outer thermal source heated compressed air additional heat, need extra combustion process.The heat that obtains from combustion process is high, flow process is ripe, but the pollutant emission problem that burning produces is unavoidable restraining factors, traditional gas turbine turbine can produce a large amount of carbon emission things, need to further process for the carbon emission thing, all be disadvantageous for considering of current environment problem and economic benefit.And the compressed-air energy storage mode of employing backheat form need to and be utilized the heat storage, in heat storage, heat transmission and heat conversion process, have quite a few heat loss, affects system effectiveness.If high temperature compressed air directly can be stored, realize the direct utilization of high pressure-temperature gas, can greatly improve the whole efficiency of system.
Summary of the invention
The objective of the invention is to adopt the hot Federal Reserve device of a kind of High Temperature Gas, realize the high-temperature storage of high-pressure air in storage device, improve gas in the acting ability of turbine power generation unit, thereby improve the whole efficiency of system, the hot Federal Reserve device of High Temperature Gas can be used as a kind of heat-storing device simultaneously, outwards quantity of heat given up.
In order to solve the problems of the technologies described above, the invention provides a kind of compressed air energy storage power generating system that adopts the hot Federal Reserve device of High Temperature Gas, described system comprises: compressor bank, the hot Federal Reserve device of High Temperature Gas and turbine power generation unit, the import of the hot Federal Reserve device of described High Temperature Gas is connected with described compressor bank outlet, and the outlet of the hot Federal Reserve device of described High Temperature Gas is connected with described turbine power generation unit; Described compressor bank is used for pressurized air; The hot Federal Reserve device of described High Temperature Gas is used for storing the high temperature air of compressor bank compression, and the high-temperature gas that the hot Federal Reserve device of High Temperature Gas discharges directly promotes turbine power generation unit output electric work.
Preferably, described compressor bank comprises compressor and motor, and the import of described compressor is connected with atmosphere, and the outlet of compressor is connected with the hot Federal Reserve device of described High Temperature Gas.
Preferably, described system utilizes electric energy drive compression machine pressurized air.
Preferably, described compressor bank Outlet Gas Temperature is 100～800 ℃.
Preferably, the hot Federal Reserve device of described High Temperature Gas adopts thermal insulation thermal insulating material and structural design.Thermal isolation technique guarantees that gas temperature is stable for a long time in the hot Federal Reserve device of High Temperature Gas; The hot Federal Reserve device of described High Temperature Gas can be used as the thermal source that heat stores simultaneously, with the high-temperature gas form, and the heat of external stable output;
Preferably, the hot Federal Reserve device of described High Temperature Gas can be realized storing in energy storage and the thermal insulation released in can interval procedure of high-temperature gas, guarantees that gas temperature is substantially constant.
Preferably, 100 ℃～800 ℃ of the gas storage temperature of the hot Federal Reserve device of described High Temperature Gas, gas storage pressure is 0.1MPa～30MPa.
Preferably, the high temperature furnace pipe that the hot Federal Reserve device of described High Temperature Gas is arranged in arrays or the container that uses high-temperature resistant thermal insulating material to make, thermal insulating material place High Temperature Gas hot Federal Reserve device inside or spread on the hot Federal Reserve device of High Temperature Gas outside outward.
Preferably, the hot Federal Reserve device of described High Temperature Gas adopts phase change heat storage material or large specific heat capacity heat-accumulating material as heat-accumulating material, described heat-accumulating material is positioned over High Temperature Gas hot Federal Reserve device inside or spreads on the hot Federal Reserve device of High Temperature Gas outside outward, guarantees that gas temperature is substantially constant.
Preferably, the hot Federal Reserve device of described High Temperature Gas is positioned on the ground or is embedded in underground.
Preferably, described turbine power generation unit comprises air expansion turbine and generator, and the import of described air expansion turbine is connected with the hot Federal Reserve device of described High Temperature Gas; The air expansion turbine utilizes the described generator generating of the compressed air-driven of high temperature.
Preferably, described turbine power generation unit inlet gas temperature is 100～800 ℃.
A kind of compressed air energy storage power generating system that adopts the hot Federal Reserve device of High Temperature Gas provided by the invention, in thermal energy storage process, the High Temperature High Pressure air that compressor outlet is obtained is stored in the hot Federal Reserve device of gas, utilizes the High Temperature High Pressure air that stores directly to promote turbine power generation unit acting generating in exoergic process.Thermal energy storage process and exoergic process have formed complete cyclic process, have finished the transfer process by electric energy → pressurized air internal potential energy → electric energy.
Contrast traditional compressed-air energy-storage system, gas storage temperature of the present invention is high, does not need outer thermal source or fuel combustion heat to be provided and to improve compressed-air actuated acting ability.The regenerative heat type compressed air energy storage power generating system of the middle heat storage medium of employing that contrast is conventional, the present invention need not the gas thermal release, but directly stores the air of High Temperature High Pressure, and the air work ability of storage is large, and the conventional heat-storing device that adopts carries out in the heat recovery process, has the loss of heat.Simultaneously, the hot Federal Reserve device of High Temperature Gas is not only as the hot Federal Reserve device of a kind of High Temperature Gas among the present invention, for the generating of turbine power generation unit provides stable source of the gas, and can also be as a kind of stable thermal source, with the heat of the outside stable output of high-temperature gas form, improve the thermal efficiency of whole system.At last, the present invention does not need outer thermal source or fuel combustion that heat is provided, and can realize the effect of zero-emission.
Description of drawings
Fig. 1 is the structure connection diagram of the compressed-air energy-storage system of the hot Federal Reserve device of High Temperature Gas that adopts of the present invention.
The accompanying drawing sign:
1, compressor bank; 2, the hot Federal Reserve device of High Temperature Gas; 3, turbine power generation unit.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, the present invention is for adopting the compressed-air energy-storage system of the hot Federal Reserve device of High Temperature Gas, and it comprises: compressor bank 1, the hot Federal Reserve device 2 of High Temperature Gas, turbine power generation unit 3; Compressor bank 1 utilizes electric energy air pressure to be shortened into the pressurized air of high-temperature high-pressure state, and the import of the hot Federal Reserve device 2 of High Temperature Gas is connected with the outlet of compressor bank 1, and the hot Federal Reserve device 2 of High Temperature Gas stores the High Temperature High Pressure air of compressor bank 1 compression; The outlet of the hot Federal Reserve device 2 of High Temperature Gas is connected with turbine power generation unit 3, for 3 generatings of turbine power generation unit provide pressurized air.
When low power consumption, the energy-storage system energy storage, compressor bank 1 compression that air is driven by electric energy forms the pressurized air of High Temperature High Pressure, by pipeline with compressed-air-storing in the hot Federal Reserve device 2 of High Temperature Gas; In this gas replenishment process, storage when the hot Federal Reserve device 2 of High Temperature Gas is finished gas and heat.During peak of power consumption, energy-storage system is released energy, and the hot Federal Reserve device 2 of High Temperature Gas is emitted the pressurized air of high temperature; The pressurized air of high temperature promotes 3 generatings of turbine power generation unit, and outwards power supply.Directly store the pressurized air of high temperature, improve the acting ability of high-pressure air, reduce the loss in the conversion process of energy, efficient that can the Effective Raise system; Directly store the pressurized air of high temperature, can also outwards provide heat as stable thermal source.
Compressor bank 1 comprises at least one compressor and a motor, and the import of compressor is connected with atmosphere, and its outlet is connected with the hot Federal Reserve device 2 of High Temperature Gas; Motor utilizes trough-electricity, abandons wind-powered electricity generation, abandons water power, abandons the dump energy drive compression machine pressurized air such as photoelectricity.The Output pressure scope of compressor bank is between 0.1MPa to 30MPa.
Hot Federal Reserve device 2 inner air pressures of High Temperature Gas are 0.1～30MPa, 100～800 ℃ of temperature.The hot Federal Reserve device 2 of High Temperature Gas is the high temperature furnace pipe of arranged in arrays or the container that uses high temperature resistant heat-insulating property excellent material to arrange, can guarantee energy storage with release can blanking time in, the hot Federal Reserve device of High Temperature Gas
HaveGood heat insulation effect can adopt phase change heat storage material or large specific heat capacity heat-accumulating material that system is incubated simultaneously.
The hot Federal Reserve device 2 of High Temperature Gas has the function that heat outwards is provided, and take the heat energy that utilizes high temperature air as form, can be used as stable thermal source, outward supplying heat.
Turbine power generation unit 3 comprises an air expansion turbine and a generator, and the import of air expansion turbine is connected the compressed air-driven generator generating of air expansion turbine utilization heating, and outwards power supply with hot Federal Reserve device 2 outlets of High Temperature Gas.The inlet pressure of air expansion turbine is between 20MPa to 0.3MPa, and intake temperature is between 100～800 ℃.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. compressed air energy storage power generating system that adopts the hot Federal Reserve device of High Temperature Gas, it is characterized in that, described system comprises: compressor bank, the hot Federal Reserve device of High Temperature Gas and turbine power generation unit, the import of the hot Federal Reserve device of described High Temperature Gas is connected with described compressor bank outlet, and the outlet of the hot Federal Reserve device of described High Temperature Gas is connected with described turbine power generation unit; Described compressor bank is used for pressurized air; The hot Federal Reserve device of described High Temperature Gas is used for storing the high temperature air of compressor bank compression, and the high-temperature gas that the hot Federal Reserve device of High Temperature Gas discharges directly promotes turbine power generation unit output electric work.
2. system according to claim 1 is characterized in that, described compressor bank comprises compressor and motor, and the import of described compressor is connected with atmosphere, and the outlet of compressor is connected with the hot Federal Reserve device of described High Temperature Gas.
3. arbitrary described system is characterized in that according to claim 1～2, and described compressor bank Outlet Gas Temperature is 100～800 ℃.
4. system according to claim 1 is characterized in that, the hot Federal Reserve device of described High Temperature Gas can be realized storing in energy storage and the thermal insulation released in can interval procedure of high-temperature gas, guarantees that gas temperature is substantially constant.
5. according to claim 1 or 4 described systems, it is characterized in that, 100 ℃～800 ℃ of the gas storage temperature of the hot Federal Reserve device of described High Temperature Gas, gas storage pressure is 0.1MPa～30MPa.
6. according to claim 1 or 4 described systems, it is characterized in that the high temperature furnace pipe that the hot Federal Reserve device of described High Temperature Gas is arranged in arrays or the container that uses high-temperature resistant thermal insulating material to make.
7. according to claim 1 or 4 described systems, it is characterized in that, the hot Federal Reserve device of described High Temperature Gas adopts phase change heat storage material or large specific heat capacity heat-accumulating material as heat-accumulating material, and described heat-accumulating material is positioned over High Temperature Gas hot Federal Reserve device inside or spreads on the hot Federal Reserve device of High Temperature Gas outside outward.
8. system according to claim 1 is characterized in that, described turbine power generation unit comprises air expansion turbine and generator, and the import of described air expansion turbine is connected with the hot Federal Reserve device of described High Temperature Gas; The air expansion turbine utilizes the described generator generating of the compressed air-driven of high temperature.
9. system according to claim 1 is characterized in that, described turbine power generation unit inlet gas temperature is 100～800 ℃.
10. the arbitrary system of claim 1～9 is as the application of thermal source.
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| CN106014508A (en) * | 2016-07-12 | 2016-10-12 | 华北电力大学（保定） | Compressed air energy storage system |
| CN107701406A (en) * | 2017-10-31 | 2018-02-16 | 清华大学 | A kind of adiabatic compression air energy storage systems of tail gas backheat |
| CN113090509A (en) * | 2021-04-08 | 2021-07-09 | 西安热工研究院有限公司 | Compressed air energy storage coupled thermal power generating unit deep peak shaving system and method |
| CN117267092A (en) * | 2023-07-31 | 2023-12-22 | 安徽华赛能源科技有限公司 | Chamber type compressed air energy storage system and control method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014508A (en) * | 2016-07-12 | 2016-10-12 | 华北电力大学（保定） | Compressed air energy storage system |
| CN107701406A (en) * | 2017-10-31 | 2018-02-16 | 清华大学 | A kind of adiabatic compression air energy storage systems of tail gas backheat |
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| CN117267092A (en) * | 2023-07-31 | 2023-12-22 | 安徽华赛能源科技有限公司 | Chamber type compressed air energy storage system and control method |
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Application publication date: 20131016 |