CN102562504B - Wind energy-solar energy combined energy storage generating system - Google Patents
Wind energy-solar energy combined energy storage generating system Download PDFInfo
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- CN102562504B CN102562504B CN201110416414.9A CN201110416414A CN102562504B CN 102562504 B CN102562504 B CN 102562504B CN 201110416414 A CN201110416414 A CN 201110416414A CN 102562504 B CN102562504 B CN 102562504B
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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The invention relates to a wind energy-solar energy combined energy storage generating system, comprising a wind power compressed air energy storage system, a solar energy heat collection heat storage system and a gas-steam combined circulation generating system. In the invention, a compressor set is directly driven by utilizing a wind turbine, a solar energy heat collection device is used for heating compressed air, an air stage compressor is used for preheating fuel, exhaust of a gas turbine is taken as a steam turbine generating heat source to realize gas-steam combined circulation, efficiency of a system is improved, and a stable power supply system is provided. The wind power compressed air energy storage system, the solar energy heat collection energy storage system and the gas-steam combined circulation generating system are integrated, the stable power supply system is provided, and the wind energy-solar energy combined energy storage generating system can be used as a pitch peak; meanwhile, technical support is provided for large-scale development of wind power, and system efficiency is improved compared with the technical scheme of the traditional wind power compressed air energy storage generating system.
Description
Technical field
The present invention relates to a kind of wind energy and solar energy utilization system, relate in particular to a kind of wind and solar energy associating energy storage generating system.
Background technique
For solving and tackling the problems such as energy shortage and environmental pollution, in the last few years, government continued to increase the fund input of renewable energy sources research and Demonstration And Extension and industrialization dynamics, and renewable energy sources shared ratio in China energy consumption structure rises year by year.This wherein, wind energy is as a kind of clean reproducible energy, for Substitute coal generating and carbon dioxide discharge-reduction important role.Along with the increase day by day of wind-powered electricity generation capacity and wind energy turbine set scale, the ratio of wind-powered electricity generation in electric power system is increasing, day by day obvious on the impact of system.After large-scale wind power field access electrical network, can exert an influence to aspects such as the peak regulation of electrical network, frequency modulation, the quality of power supply, electric network swim, transient stabilities, on the one hand electrical network is formed to greater impact, affect power supply quality, improved on the other hand device fabrication cost, these factors have seriously restricted the extensive development and application of wind-powered electricity generation.
In order to utilize better wind energy, it is worthless adopting simply the measure of wind-powered electricity generation proportion in restriction electrical network.Utilize energy-storage system that wind-powered electricity generation is indirectly inputted to electrical network or stored, when electrical network needs stably for mains supply is a kind of effective method.What use was more at present is pumped storage power station, and it is hydraulic potential storage by wind energy transformation, then forms stable power-supplying, is secondly Caes gas turbine power generation station.Compare with pumped storage power station, compressed air energy storage station, its energy conversion efficiency is high, and have operation and maintenance cost low, meet the advantages such as scope is large, addressing is easier, development prospect is good.
Solar energy be equally a kind of important can be at the raw energy, and have have a very wide distribution, total resources is large, the clean feature such as pollution-free, at present the utilization of solar energy is mainly concentrated on to three aspects such as being converted into electric energy, heat energy, chemical energy, solar energy is used as thermal source, and technology is comparatively ripe.Trough type solar heat-collector heat-collecting temperature can reach 350 ℃, can finely by its operation working medium, provide enough heat energy to be used for heating.
Through prior art literature search is found, currently used is that wind energy is carried out to gas turbine power generation and directly promoted turbine power generation by pressurized air.
Summary of the invention
The object of the present invention is to provide and a kind ofly can improve system effectiveness, and the wind and solar energy associating energy storage generating system of stable power-supplying is provided.
For achieving the above object, the technical solution used in the present invention is: described wind-power compressed air energy-storage system comprises Wind turbine, this Wind turbine is connected with High Pressure Air Compressor group with low pressure air compressor group respectively by the variable speed drive group of different gear ratio, between low pressure air compressor group and High Pressure Air Compressor group, be provided with the heat exchanger package with fuel inlet, the outlet of low pressure air compressor group is connected with the entrance of heat exchanger package, the entrance of High Pressure Air Compressor group is connected with the outlet of heat exchanger package 4, and the outlet of High Pressure Air Compressor group is connected with caisson;
Described solar heat-collection and heat-accumulation system comprises solar thermal collector and is connected with solar thermal collector and forms the heat exchanger of circulation loop, and on the entrance of solar thermal collector and export pipeline, be also provided with that solar thermal collector enters, outlet valve, outlet at heat exchanger is provided with recycle pump, and the outlet of caisson is connected with heat exchanger through the pipeline of gas storage valve is installed;
Described gas combustion-gas vapor combined cycle system comprises burner, the gas access of described burner is connected with the heat exchanger of solar heat-collection and heat-accumulation system, the fuel inlet of burner is connected with the heat exchange unit of wind-power compressed air energy-storage system, via the fuel of wind-power compressed air energy-storage system preheating with via pressurized air mixed combustion in burner of solar heat-collection and heat-accumulation system heating, form high-temperature fuel gas and enter acting drive gas turbine powered generator generating in combustion gas turbine, the exhaust of combustion gas turbine enters exhaust heat boiler heated feed water and forms high-temperature steam, high-temperature steam enters steam turbine acting again and drives the generating of steam turbine generation machine, steam is discharged by become liquid water by feed water pump, liquid water to be transported in exhaust heat boiler by condenser condenses by steam turbine again, realize water vapor circulation.
Described solar heat-collection and heat-accumulation system also comprises the heat-accumulator tank that be filled with energy storage materials of phase change in parallel with heat exchanger, and the entrance pipe of heat exchanger and heat-accumulator tank is also separately installed with heat exchange valve and accumulation of heat valve.
On the pipeline of described feed water pump rear end, be also provided with the feed water preheater being connected with steam turbine, feed water preheater by drawing gas heating boiler to feed water from steam turbine.
Described solar thermal collector adopts a plurality of grooved parabolic condenser serial or parallel connections to form.
The present invention is by Wind turbine direct driving compressor unit, utilize solar heat collector to heat pressurized air, and adopt air classification compression set, fuel is carried out to preheating, exhaust for gas turbine realizes combustion and steam combined cycle as steam turbine generation thermal source, improved the efficiency of system, and stable power supply system is provided.Combine wind-power compressed air energy-storage system, solar heat-collection energy-storage system, gas combustion-gas vapor combined cycle system, stable power supply system is provided, can do peak regulation uses, extensive development for wind-powered electricity generation simultaneously provides technical support, and compare existing wind-power compressed air energy storage generating system technological scheme, system effectiveness is improved.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: 1, Wind turbine, 2, variable speed drive group, 3, low pressure air compressor group, 4, heat exchanger package, 5, High Pressure Air Compressor group, 6, caisson, 7, heat exchanger, 8, burner, 9, combustion gas turbine, 10, gas turbine powered generator, 11, exhaust heat boiler, 12, steam turbine, 13, steam turbine generation machine, 14, vapour condenser, 15, feed water pump, 16, feed water preheater, 17, solar thermal collector, 18, heat-accumulator tank, 19, recycle pump, F1 gas storage valve, F2, accumulation of heat valve, F3, heat exchange valve, F4, solar thermal collector inlet valve, F5, solar thermal collector outlet valve.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Referring to Fig. 1, the present invention includes wind-power compressed air energy-storage system, solar heat-collection and heat-accumulation system and gas combustion-gas vapor combined cycle system;
Described wind-power compressed air energy-storage system comprises Wind turbine 1, variable speed drive 2, low pressure air compressor group 3, heat exchanger package 4, High Pressure Air Compressor group 5 and caisson 6, Wind turbine 1 is connected with High Pressure Air Compressor group 5 with low pressure air compressor group 3 respectively by the variable speed drive group 2 of different gear ratio, between low pressure air compressor group 3 and High Pressure Air Compressor group 5, be provided with the heat exchanger package 4 with fuel inlet, the outlet of low pressure air compressor group 3 is connected with the entrance of heat exchanger package 4, the entrance of High Pressure Air Compressor group 5 is connected with the outlet of heat exchanger package 4, the outlet of High Pressure Air Compressor group 5 is connected with caisson 6, Wind turbine 1 drags low pressure air compressor group 3 by variable speed drive 2, low pressure air compressor group 3 is boosted the air absorbing from external environment, be raised to certain pressure enter in heat exchanger package 4 with combustion and steam combined cycle system in fuel used heat exchange, after cooling, enter again in High Pressure Air Compressor group 5 and again boost, formation has the pressurized air of equivalent pressure, and enters in caisson 6 and store,
Described solar heat-collection and heat-accumulation system comprises solar thermal collector 17, is filled with the heat-accumulator tank 18 of energy storage materials of phase change, recycle pump 19 and the heat exchanger 7 that is connected in parallel with heat-accumulator tank 18, and working medium is high temperature heat conductive oil.Wherein solar thermal collector 17 adopts a plurality of grooved parabolic condenser serial or parallel connections to form, conduction oil absorbs heat to uniform temperature in solar thermal collector 17, enter into heat exchanger 7, heating pressurized air out from caisson 6, by again entered solar thermal collector 17 by recycle pump 19, realize circulation, heat-accumulator tank 18 is in parallel with heat exchanger 7 simultaneously, by valve, realizes switching between the two.If gas storage valve F1 opens, there is pressurized air to discharge from caisson 6, heating that need to be before entering firing chamber 8, close accumulation of heat valve F2, open heat exchange valve F3 and solar thermal collector enters, outlet valve F4, F5, conduction oil absorbs heat in solar thermal collector 17, and in heat exchanger 7, pressurized air is carried out to preheating.When gas storage valve F1 closes, there is no pressurized air, do not need heating, close heat exchange valve F3, unlatching accumulation of heat valve F2, solar thermal collector enter, outlet valve F4, F5, absorb the heat coming be temporarily stored in heat-accumulator tank 18 by solar thermal collector 17.When gas storage valve F1 is when opening night, when system was generated electricity at night, close that solar thermal collector enters, outlet valve F4, F5, open accumulation of heat valve F2, conduction oil absorbs heat in heat-accumulator tank 18, then enters heated compressed air in heat exchanger 7.
Described gas combustion-gas vapor combined cycle system comprises burner 8, combustion gas turbine 9, gas turbine powered generator 10, exhaust heat boiler 11, steam turbine 12, steam turbine generation machine 13, vapour condenser 14, feed water pump 15 and the feed water preheater 16 connecting successively.Via the fuel of wind-power compressed air energy-storage system preheating with via pressurized air mixed combustion in burner 8 of solar heat-collection energy-storage system heating, form high-temperature fuel gas, enter acting in combustion gas turbine 9 and drive gas turbine generator 10 generatings, exhaust enters exhaust heat boiler 11 heated feed waters and forms high-temperature steam, high-temperature steam enters steam turbine 12 again, acting drives 13 generatings of steam turbine generation machine, again from steam turbine 12 is discharged, via condenser 14, be condensed into liquid water, feed water pump 15 is transported to liquid water in exhaust heat boiler 11, realizes water vapor circulation.Wherein between feed water pump 15 and exhaust heat boiler 11, feed water preheater 16 is set, by drawing gas heating boiler to feed water from steam turbine 12.
In wind-power compressed air energy-storage system of the present invention, directly by variable speed drive group, make Wind turbine drive air compressor to do work, do not need to be converted into electric energy by motor run, minimizing equipment, cost-saving.In solar heat-collection energy-storage system, the use of the heat-accumulator tank of being filled by energy storage materials of phase change, can store heat, as required pressurized air is heated, and makes system have good adaptability.
Claims (4)
1. a wind and solar energy associating energy storage generating system, is characterized in that: comprise wind-power compressed air energy-storage system, solar heat-collection and heat-accumulation system and gas combustion-gas vapor combined cycle system;
Described wind-power compressed air energy-storage system comprises Wind turbine (1), this Wind turbine (1) is connected with High Pressure Air Compressor group (5) with low pressure air compressor group (3) respectively by the variable speed drive group (2) of different gear ratio, between low pressure air compressor group (3) and High Pressure Air Compressor group (5), be provided with the heat exchanger package (4) with fuel inlet, the outlet of low pressure air compressor group (3) is connected with the entrance of heat exchanger package (4), the entrance of High Pressure Air Compressor group (5) is connected with the outlet of heat exchanger package 4, and the outlet of High Pressure Air Compressor group (5) is connected with caisson (6);
Described solar heat-collection and heat-accumulation system comprises solar thermal collector (17) and is connected with solar thermal collector (17) and forms the heat exchanger (7) of circulation loop, and on the entrance of solar thermal collector (17) and export pipeline, be also provided with that solar thermal collector enters, outlet valve (F4, F5), outlet at heat exchanger (7) is provided with recycle pump (19), and the outlet of caisson (6) is connected with heat exchanger (7) through the pipeline of gas storage valve F1 is installed;
Described gas combustion-gas vapor combined cycle system comprises burner (8), the gas access of described burner (8) is connected with the heat exchanger (7) of solar heat-collection and heat-accumulation system, the fuel inlet of burner (8) is connected with the heat exchange unit (4) of wind-power compressed air energy-storage system, via the fuel of wind-power compressed air energy-storage system preheating with via pressurized air mixed combustion in burner (8) of solar heat-collection and heat-accumulation system heating, form high-temperature fuel gas and enter acting drive gas turbine powered generator (10) generating in combustion gas turbine (9), the exhaust of combustion gas turbine (9) enters exhaust heat boiler (11) heated feed water and forms high-temperature steam, high-temperature steam enters steam turbine (12) acting again and drives steam turbine generation machine (13) generating, steam is discharged and liquid water is transported in exhaust heat boiler (11) by feed water pump (15) by be condensed into liquid water by condenser (14) by steam turbine (12) again, realize water vapor circulation.
2. wind and solar energy according to claim 1 is combined energy storage generating system, it is characterized in that: described solar heat-collection and heat-accumulation system also comprises the heat-accumulator tank that be filled with energy storage materials of phase change (18) in parallel with heat exchanger (7), and the entrance pipe of heat exchanger (17) and heat-accumulator tank (18) is also separately installed with heat exchange valve (F3) and accumulation of heat valve (F2).
3. wind and solar energy according to claim 1 is combined energy storage generating system, it is characterized in that: on the pipeline of described feed water pump (15) rear end, be also provided with the feed water preheater (16) being connected with steam turbine (12), feed water preheater (16) by drawing gas heating boiler feedwater from steam turbine (12).
4. wind and solar energy associating energy storage generating system according to claim 1, is characterized in that: described solar thermal collector (17) adopts a plurality of grooved parabolic condenser serial or parallel connections to form.
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| CN201110416414.9A CN102562504B (en) | 2011-12-12 | 2011-12-12 | Wind energy-solar energy combined energy storage generating system |
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