CN113944589A - Offshore energy comprehensive utilization device system and method based on hydrogen-fired power generation system - Google Patents
Offshore energy comprehensive utilization device system and method based on hydrogen-fired power generation system Download PDFInfo
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- CN113944589A CN113944589A CN202111171202.9A CN202111171202A CN113944589A CN 113944589 A CN113944589 A CN 113944589A CN 202111171202 A CN202111171202 A CN 202111171202A CN 113944589 A CN113944589 A CN 113944589A
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- 238000010248 power generation Methods 0.000 title claims abstract description 246
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000001257 hydrogen Substances 0.000 claims abstract description 200
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 200
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 196
- 239000013535 sea water Substances 0.000 claims abstract description 85
- 238000004519 manufacturing process Methods 0.000 claims abstract description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000002485 combustion reaction Methods 0.000 claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 39
- 238000010612 desalination reaction Methods 0.000 claims description 25
- 238000005868 electrolysis reaction Methods 0.000 claims description 19
- 238000007667 floating Methods 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 17
- 239000013505 freshwater Substances 0.000 claims description 10
- 239000002918 waste heat Substances 0.000 claims description 9
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
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- 238000000108 ultra-filtration Methods 0.000 claims description 5
- 239000000567 combustion gas Substances 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
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- 238000010586 diagram Methods 0.000 description 5
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- 150000002431 hydrogen Chemical class 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 239000011232 storage material Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
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- 239000002699 waste material Substances 0.000 description 2
- QRRKZFCXXBFHSV-UHFFFAOYSA-N 1-ethylindole Chemical compound C1=CC=C2N(CC)C=CC2=C1 QRRKZFCXXBFHSV-UHFFFAOYSA-N 0.000 description 1
- BLRHMMGNCXNXJL-UHFFFAOYSA-N 1-methylindole Chemical compound C1=CC=C2N(C)C=CC2=C1 BLRHMMGNCXNXJL-UHFFFAOYSA-N 0.000 description 1
- LOBSPZHDUJUOES-UHFFFAOYSA-N 9-diazofluorene Chemical compound C1=CC=C2C(=[N+]=[N-])C3=CC=CC=C3C2=C1 LOBSPZHDUJUOES-UHFFFAOYSA-N 0.000 description 1
- PLAZXGNBGZYJSA-UHFFFAOYSA-N 9-ethylcarbazole Chemical compound C1=CC=C2N(CC)C3=CC=CC=C3C2=C1 PLAZXGNBGZYJSA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
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- 239000012528 membrane Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
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- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
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- F03D9/007—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations the wind motor being combined with means for converting solar radiation into useful energy
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- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
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- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention provides a comprehensive utilization device system and a method of offshore energy based on a hydrogen-burning power generation system, wherein the comprehensive utilization device system of offshore energy comprises a renewable energy power generation system, a seawater hydrogen production system, a hydrogen-burning power generation system and a comprehensive energy control system, the seawater hydrogen production system and the hydrogen-burning power generation system are sequentially connected, and the comprehensive energy control system is respectively connected with the renewable energy power generation system, the seawater hydrogen production system and the hydrogen-burning power generation system; according to the comprehensive utilization method of the offshore energy, the renewable energy power generation system, the seawater hydrogen production system and the hydrogen combustion power generation system are regulated and controlled by the comprehensive energy control system according to the load condition of the power grid, so that stable and high-quality power is provided for the power grid. The offshore energy comprehensive utilization device system and the offshore energy comprehensive utilization method solve the problem of poor matching of power grid load and the power generation power of the renewable energy power generation system, output clean water, hydrogen and steam outwards, and are high in energy utilization efficiency, low in carbon and environment-friendly.
Description
Technical Field
The invention relates to the field of renewable energy power generation, in particular to a comprehensive offshore energy utilization device system and method based on a hydrogen-fired power generation system.
Background
In order to cope with global warming, decarburization in the electric power field is particularly necessary, and various regions begin to greatly promote renewable energy power generation projects such as solar energy and wind energy, and gradually reduce construction projects of traditional thermal power generating sets with high carbon emission such as coal burning.
The sea has abundant renewable resources such as solar energy, wind energy, tidal energy and wave energy, and the technology for generating electricity by utilizing the renewable resources is mature. Due to the influence of external factors such as weather, time and the like, solar energy, wind energy, tidal energy and wave energy have intermittent and random influence, the problem that the power generation of a renewable energy source system is unstable is caused, and the load change and peak regulation requirements of a power grid cannot be responded.
CN111342488A discloses an integrated system and method for comprehensively utilizing offshore energy to generate electricity and store hydrogen energy. The system comprises a solar cell panel, a wind power generation device, an ocean power generation device, an electric energy conversion device I, an electric energy conversion device II, an electric energy conversion device III, a display console, a confluence device, a power grid system, an alternating current load, a direct current load and a hydrogen energy storage system. The solar cell panel, the wind power generation device and the ocean power generation device are respectively connected with the 3 electric energy conversion devices. The 3 electric energy conversion devices are respectively connected with the display console and then connected with the confluence device, the confluence device is respectively connected with the alternating current load and the hydrogen energy storage system, the power grid system is connected with the alternating current load, and the hydrogen energy storage system is respectively connected with the alternating current load and the direct current load through the DC/AC converter and the DC/DC converter. The integrated system comprehensively utilizes various new energy resources on the sea, stores the hydrogen energy as an energy storage link, stores surplus electric energy through electrolyzed water, supplies power to a load when the power generation of the energy resources on the sea is insufficient, and does not need an additional energy storage device.
CN106208910A discloses a complementary power generation system based on ocean energy, solar energy and hydrogen energy. The solar energy and the ocean energy are used as energy sources, seawater is used as a hydrogen source, hydrogen is prepared by electrolyzing water, renewable water resources are converted into clean and efficient hydrogen energy, the obtained hydrogen with high energy density is stored in an organic hydrogen storage material, the organic hydrogen storage material consists of N-methylindole, N-ethylindole, diazofluorene and N-ethylcarbazole, the hydrogen storage density is high, hydrogen absorption and hydrogen desorption can be carried out reversibly, the obtained hydrogenated organic hydrogen storage material can be conveyed to any place through a pipeline, the hydrogen separated from the organic hydrogen storage device is directly used for a fuel cell, the hydrogen energy is converted into electric energy or directly supplies heat through the hydrogen fuel cell, the power generation system is convenient and flexible, the solar energy and the ocean energy are combined, the energy is stored and transferred through the hydrogen energy, the energy is converted into the electric energy through the fuel cell and supplies power to a terminal device, stable and reliable, and high energy utilization rate.
CN106837667A discloses a wave power generation system, an offshore platform and a hydrogen energy base, wherein the wave power generation system includes an electric energy utilization device, a power generation device and a conversion device for converting changing waves into stable sea wave fluctuation; the power generation device is connected with the conversion device and receives the seawater fluctuation to generate power, and the electric energy utilization device is connected with the power generation device so that the electric energy generated by the power generation device can be utilized by users. The sea wave power generation system converts sea waves with different sizes into stable sea water fluctuation, the power generation device can stably and efficiently generate power, the sea waves with different sizes are fully utilized, the power generation cost is greatly reduced, and the sea wave power generation system has practical value and huge economic benefit.
However, the above methods have light and wind abandoning phenomena to different degrees, and cannot respond well to load changes of the power grid to provide stable power for the power grid.
Therefore, a marine comprehensive energy utilization system based on a hydrogen-fired power generation system is developed, which can comprehensively utilize various renewable energy sources such as waves, tides, wind, light and the like on the sea to generate power and provide stable and high-quality power for a power grid.
Disclosure of Invention
In view of the problems in the prior art, the invention provides a comprehensive offshore energy utilization device system and method based on a hydrogen-fired power generation system, which solve the problem of poor matching between the power generation power of the renewable energy power generation system and the load of a power grid by utilizing the mutual cooperation of the offshore renewable energy power generation system and the hydrogen-fired power generation system, realize clean and green power generation and simultaneously fully utilize the current generated by the redundant renewable energy power generation system to output clean water, hydrogen and steam outwards.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides an offshore energy comprehensive utilization device system based on a hydrogen-fired power generation system, which comprises a renewable energy power generation system, a seawater hydrogen production system, a hydrogen-fired power generation system and a comprehensive energy control system, wherein the seawater hydrogen production system and the hydrogen-fired power generation system are sequentially connected, and the comprehensive energy control system is respectively connected with the renewable energy power generation system, the seawater hydrogen production system and the hydrogen-fired power generation system.
The offshore energy comprehensive utilization device system integrates a renewable energy power generation system, a seawater hydrogen production system and a hydrogen combustion power generation system, the renewable energy power generation system, the seawater hydrogen production system and the hydrogen combustion power generation system are regulated and controlled by a comprehensive energy control system according to the load condition of a power grid, when the power generated by the renewable energy power generation system exceeds the load requirement of the power grid, one or at least two generator sets in the renewable energy power generation system are selected to be switched out, and redundant power is transmitted to the seawater hydrogen production system to desalt seawater and electrolyze water to produce hydrogen, so that clean fresh water and hydrogen are obtained; when the power generated by the renewable energy power generation system cannot meet the load requirement of a power grid, switching a generator set of the renewable energy power generation system originally used for the seawater hydrogen production system into the power grid to supplement the supplied power; when all the generator sets of the renewable energy power generation system are put into grid-connected power generation and still cannot meet the load of a power grid, the hydrogen-fired internal combustion engine generator set and/or the hydrogen-fired gas turbine generator set are/is selected to be put into, hydrogen obtained before is utilized to perform hydrogen-fired power generation, and the supplied power is further supplemented, so that the waste phenomenon of renewable energy is avoided, and green, environment-friendly and clean power generation is realized. Meanwhile, the hydrogen-burning gas turbine generator set utilizes the exhaust gas generated after the hydrogen is burnt to do work to be recovered by the waste heat boiler and outputs steam outwards, thereby realizing the high-efficiency utilization of energy.
Preferably, the renewable energy power generation system comprises a combination of at least two of a floating wave energy power generation unit, a tidal energy power generation unit, a floating photovoltaic power generation unit or an offshore wind power generation unit.
The floating wave energy generator set, the tidal energy generator set, the floating photovoltaic generator set or the offshore wind turbine generator set in the renewable energy power generation system can directly adopt the existing device system, and the operation condition of each generator set needs to be regulated and controlled according to the actual condition of offshore natural resources.
The tidal power generator set in the renewable energy power generation system can be arranged in coastal bay areas, a reservoir is constructed by building a dike, and a hydraulic generator is arranged on the side of the dike; the floating photovoltaic power generation set is arranged above the water surface of the reservoir; the floating wave power generation unit is arranged in an offshore area; the offshore wind power generation unit is arranged at a higher coastal altitude and in an offshore area.
Preferably, the seawater hydrogen production system comprises a seawater desalination unit and an electrolyzed water hydrogen production unit which are connected in sequence.
Preferably, the seawater desalination unit comprises a seawater storage device, a first water delivery device, an ultrafiltration water storage device, a second water delivery device, a reverse osmosis device and a fresh water storage device.
The first water delivery device is a water supply pump and is mainly used for delivering seawater; the second delivery device is a high-pressure pump which is mainly used for delivering seawater and providing required high pressure for the reverse osmosis device.
Preferably, the seawater desalination unit is further provided with an external fresh water supply interface.
Preferably, the water electrolysis hydrogen production unit comprises an electrolysis device, a separation device and an electrode.
The electrolysis device is an electrolytic bath, and the isolation device is an isolation film.
Preferably, the seawater hydrogen production system further comprises a hydrogen treatment unit connected with the water electrolysis hydrogen production unit.
Preferably, the hydrogen processing unit comprises a compression device, a hydrogen storage device, a hydrogen filtering device, a hydrogen component analysis device, a flow measuring device and an adjusting device which are connected in sequence along the hydrogen conveying direction.
The hydrogen produced by the water electrolysis hydrogen production unit is compressed to a certain pressure by the compression device and then stored in the hydrogen storage device; the hydrogen filtering device filters impurities existing in the hydrogen conveying process; the hydrogen component analysis device comprises a chromatograph for analyzing the components of the hydrogen; the flow measuring device comprises an ultrasonic flow measuring instrument for measuring the delivered hydrogen; the regulating device regulates the flow and pressure of the delivered hydrogen.
Preferably, the regulating device comprises a hydrogen regulating device of a hydrogen-burning gas turbine and a hydrogen regulating device of a hydrogen-burning internal combustion engine.
Preferably, the hydrogen processing unit further comprises an external hydrogen supply interface connected with the flow measuring device.
Preferably, the integrated energy control system comprises an intelligent control unit, a hydrogen-burning power generation system control unit and a grid-connected control unit.
Preferably, the grid-connected control unit is respectively connected with the intelligent control unit and the hydrogen-burning power generation system control unit.
Preferably, the grid-connected control unit comprises a grid-connected controller.
Preferably, the hydrogen-fired power generation system comprises a hydrogen-fired gas turbine generator set and a hydrogen-fired internal combustion engine generator set.
The hydrogen-burning power generation system disclosed by the invention carries out peak shaving power generation by taking hydrogen stored in a hydrogen processing unit in a seawater hydrogen production system as fuel, when the grid-connected power generation power of the renewable energy power generation system is lower than the load of a power grid, a hydrogen-burning power generator set control system sends a starting instruction, and a hydrogen-burning internal combustion engine power generator set can be independently started, a hydrogen-burning gas turbine power generator set can be independently started or the hydrogen-burning internal combustion engine power generator set and the hydrogen-burning gas turbine power generator set can be simultaneously started according to the required power generation power. The hydrogen-fired gas turbine generator set and the hydrogen-fired internal combustion engine generator set of the invention can be arranged at the coast.
Preferably, the hydrogen-combustion gas turbine generator set comprises a hydrogen-combustion gas turbine, a generator and a waste heat boiler.
Preferably, the hydrogen-burning gas turbine generator set is also provided with an external steam supply interface.
The steam conveyed outwards by the hydrogen-burning gas turbine generator set can be used for supplying heat.
Preferably, the hydrogen-burning internal combustion engine generator set comprises a hydrogen-burning internal combustion engine, a generator and a lithium bromide absorption refrigeration device.
In a second aspect, the invention further provides a comprehensive utilization method of offshore energy based on the hydrogen-fired power generation system, which is implemented by adopting the comprehensive utilization device system of offshore energy based on the hydrogen-fired power generation system in the first aspect.
The comprehensive utilization method of the offshore energy provided by the invention has the advantages that the offshore renewable energy power generation system and the hydrogen-burning power generation system are matched with each other, so that stable electric power is provided for a power grid, and green, environment-friendly and clean power generation is realized.
Preferably, the comprehensive utilization method of offshore energy comprises the following steps:
according to the relation between the power grid load and the power generated by the renewable energy power generation system, the comprehensive energy control system controls the input condition of the seawater hydrogen production system and/or the hydrogen-burning power generation system.
The power generated by the renewable energy power generation system is transmitted to the seawater hydrogen production system, the hydrogen-burning power generation system and the power grid through the comprehensive energy control system, and the comprehensive energy control system regulates and controls the power generation conditions of the renewable energy power generation system, the seawater hydrogen production system and the hydrogen-burning power generation system according to the load condition of the power grid.
Preferably, the power generated by the renewable energy power generation system is divided into three paths, wherein the first path is transmitted to a seawater desalination unit of a seawater hydrogen production system, the second path is transmitted to an electrolyzed water hydrogen production unit of the seawater hydrogen production system, and the third path is transmitted to a power grid for power supply through an intelligent control unit and a grid-connected control unit of the comprehensive energy control system.
Preferably, the clean water produced by the seawater desalination unit is supplied to the electrolyzed water hydrogen production unit, and the clean water produced by the seawater desalination system is delivered outwards to realize water supply after meeting the requirements of the electrolyzed water hydrogen production unit.
Preferably, the hydrogen generated by the water electrolysis hydrogen production unit is conveyed to a hydrogen-burning power generation system through a hydrogen treatment unit.
Preferably, the hydrogen generated by the hydrogen production unit by water electrolysis is collected by the hydrogen processing unit after meeting the requirements of the hydrogen-burning power generation system, and then is stored and/or is output outwards.
Preferably, the electric power generated by the hydrogen-fired gas turbine generator set of the hydrogen-fired power generation system is transmitted to a power grid for power supply through the hydrogen-fired power generation system control unit and the grid-connected control unit.
Preferably, the hydrogen-fired gas turbine generator set utilizes exhaust gas generated after hydrogen is combusted to apply work to be recovered by a waste heat boiler, and steam is output to realize heat supply.
Preferably, when the grid-connected control unit detects that the grid load is smaller than the grid-connected power generation power of the renewable energy power generation system, the grid-connected control unit sends a first instruction to the intelligent control system, the intelligent control system selects one or at least two generator sets in the renewable energy power generation system according to the matching of the grid load and the power generation power, and the cut power generation power is transmitted to the seawater hydrogen production system.
Preferably, when the grid-connected control unit detects that the load of the power grid is greater than the grid-connected power generation power of the renewable energy power generation system, the grid-connected control unit sends a second instruction to the intelligent control system, and the intelligent control system switches a generator set for the seawater hydrogen production system in the renewable energy power generation system into the power grid according to the matching property of the load of the power grid and the power generation power.
Preferably, when the renewable energy power generation system is completely put into grid-connected power generation and the grid load is still greater than the grid-connected power generation power, the grid-connected control unit sends a second instruction to the hydrogen-fired power generation system, and the hydrogen-fired power generation system control unit selects to put into the hydrogen-fired internal combustion engine generator set and/or the hydrogen-fired gas turbine generator set according to the matching property of the grid load and the power generation power to carry out grid-connected power generation.
Compared with the prior art, the invention has at least the following beneficial effects:
(1) the offshore energy comprehensive utilization device system based on the hydrogen-fired power generation system integrates the renewable energy power generation technology, the seawater desalination technology, the water electrolysis hydrogen production technology and the hydrogen-fired power generation technology, and the comprehensive energy control system switches the input of the renewable energy power generation system and the seawater hydrogen production system in real time, so that the waste phenomenon of renewable energy such as wind abandonment, light abandonment and the like is avoided;
(2) the offshore energy comprehensive utilization device system based on the hydrogen-fired power generation system regulates and controls the input of the hydrogen-fired gas turbine generator set and the hydrogen-fired internal combustion engine generator set through the hydrogen-fired power generation control unit, solves the problem that the matching between the power generation power of the renewable energy power generation system and the load of a power grid is poor, and realizes stable and high-quality power output;
(3) the offshore energy comprehensive utilization device system based on the hydrogen-fired power generation system fully utilizes the electric power generated by the renewable energy power generation system which cannot be consumed by the power grid to desalt seawater and electrolyze water to produce hydrogen, realizes the outward output of clean water and hydrogen, and has high energy utilization efficiency;
(4) the comprehensive utilization method of the offshore energy based on the hydrogen-fired power generation system provided by the invention enables the offshore renewable energy power generation system and the hydrogen-fired power generation system to be matched with each other, provides stable power for a power grid, and realizes green, environment-friendly and clean power generation.
Drawings
FIG. 1 is a schematic structural diagram of an offshore energy comprehensive utilization device system based on a hydrogen-burning power generation system provided by the invention.
FIG. 2 is a schematic diagram of a hydrogen processing unit in the offshore energy comprehensive utilization device system based on the hydrogen-burning power generation system.
In the figure: 1-a floating wave energy generator set; 2-tidal power generator set; 3-floating photovoltaic generator set; 4-an offshore wind generating set; 5-an intelligent control unit; 6-a hydrogen-fired power generation system control unit; 7-a grid-connected control unit; 8-a seawater desalination unit; 9-a hydrogen production unit by water electrolysis; 10-a hydrogen treatment unit; 11-a hydrogen-fired gas turbine generator set; 12-a hydrogen-burning internal combustion engine generator set; 13-an external clean water supply interface; 14-an external hydrogen supply interface; 15-external steam supply interface; 16-power supply of a power grid; 17-hydrogen; 18-a compression device; 19-a hydrogen storage means; 20-a hydrogen filtration unit; 21-a hydrogen component analyzing device; 22-flow measuring means; 23-hydrogen gas regulating device of hydrogen-burning gas turbine; 24-hydrogen regulating device for hydrogen-burning internal combustion engine.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The invention provides a comprehensive offshore energy utilization device system based on a hydrogen-fired power generation system, which is shown in a schematic structural diagram in figure 1.
The offshore energy comprehensive utilization device system comprises a renewable energy power generation system, a seawater hydrogen production system, a hydrogen combustion power generation system and a comprehensive energy control system, wherein the seawater hydrogen production system and the hydrogen combustion power generation system are sequentially connected, and the comprehensive energy control system is respectively connected with the renewable energy power generation system, the seawater hydrogen production system and the hydrogen combustion power generation system.
The renewable energy power generation system comprises a floating wave energy power generation unit 1, a tidal energy power generation unit 2, a floating photovoltaic power generation unit 3 and an offshore wind power generation unit 4.
The seawater hydrogen production system comprises a seawater desalination unit 8, an electrolyzed water hydrogen production unit 9 and a hydrogen treatment unit 10; the seawater desalination unit 8 comprises a seawater storage device, a first water delivery device, an ultrafiltration water storage device, a second water delivery device, a reverse osmosis device and a fresh water storage device; the unit for producing hydrogen by electrolyzing water 9 comprises an electrolysis device, an isolation device and an electrode. The schematic diagram of the hydrogen processing unit 10 is shown in fig. 2, and the hydrogen processing unit 10 includes a compression device 18, a hydrogen storage device 19, a hydrogen filtering device 20, a hydrogen component analysis device 21, a flow measuring device 22 and an adjusting device which are connected in sequence along the hydrogen conveying direction. The regulating devices comprise a hydrogen regulating device 23 of a hydrogen-burning gas turbine and a hydrogen regulating device 24 of a hydrogen-burning internal combustion engine; the flow measuring device 22 is also connected to a hydrogen supply connection 25.
The comprehensive energy control system comprises an intelligent control unit 5, a hydrogen-burning power generation system control unit 6 and a grid-connected control unit 7; the grid-connected control unit 7 comprises a grid-connected controller.
The hydrogen-burning power generation system comprises a hydrogen-burning gas turbine generator set 11 and a hydrogen-burning internal combustion engine generator set 12; the hydrogen-burning gas turbine generator set 11 comprises a hydrogen-burning gas turbine, a generator and a waste heat boiler. The hydrogen-burning internal combustion engine generator set comprises a hydrogen-burning internal combustion engine, a generator and a lithium bromide absorption type refrigerating device.
The invention also provides a comprehensive utilization method of offshore energy based on the hydrogen-fired power generation system, which is carried out by adopting the comprehensive utilization device system of offshore energy based on the hydrogen-fired power generation system.
The comprehensive utilization method of the offshore energy comprises the following steps:
the power generated by the renewable energy power generation system is divided into three paths, wherein the first path is transmitted to a seawater desalination unit 8 of a seawater hydrogen production system, the second path is transmitted to an electrolyzed water hydrogen production unit 9 of the seawater hydrogen production system, and the third path is transmitted to a power grid for power supply through an intelligent control unit 5 and a grid-connected control unit 7 of the comprehensive energy control system;
clean water generated by the seawater desalination unit 8 is supplied to the electrolyzed water hydrogen production unit 9, and the clean water generated by the seawater desalination system is used for delivering clean fresh water to the outside to realize water supply after meeting the requirements of the electrolyzed water hydrogen production unit 9;
hydrogen generated by the water electrolysis hydrogen production unit 9 is conveyed to a hydrogen-burning power generation system through a hydrogen treatment unit 10, and the hydrogen generated by the water electrolysis hydrogen production unit 9 is collected by the hydrogen treatment unit 10 after meeting the requirements of the hydrogen-burning power generation system, and then is stored and/or is output outwards;
the electric power generated by a hydrogen-burning gas turbine generator set 11 of the hydrogen-burning power generation system is transmitted to a power grid for power supply through a hydrogen-burning power generation system control unit 6 and a grid-connected control unit; the hydrogen-burning gas turbine generator set 11 utilizes exhaust gas generated after hydrogen gas burns to do work to be recycled through a waste heat boiler, and steam is output to realize heat supply;
when the grid-connected control unit 7 detects that the grid load is smaller than the grid-connected power generation power of the renewable energy power generation system, the grid-connected control unit 7 sends a first instruction to the intelligent control system, the intelligent control system selects one or at least two generator sets in the renewable energy power generation system according to the matching of the grid load and the power generation power, and the cut power generation power is transmitted to the seawater hydrogen production system;
when the grid-connected control unit 7 detects that the load of the power grid is larger than the grid-connected power generation power of the renewable energy power generation system, the grid-connected control unit 7 sends a second instruction to the intelligent control system, and the intelligent control system switches a generator set for the seawater hydrogen production system in the renewable energy power generation system into the power grid according to the matching property of the load of the power grid and the power generation power;
when the renewable energy power generation system is completely put into grid-connected power generation and the load of the power grid is still larger than the grid-connected power generation power, the grid-connected control unit 7 sends a second instruction to the hydrogen-fired power generation system, and the hydrogen-fired power generation system control unit selects to put into the hydrogen-fired internal combustion engine generator set 12 and/or the hydrogen-fired gas turbine generator set 11 according to the matching of the load of the power grid and the power generation power to carry out grid-connected power generation.
The present invention is described in further detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
Example 1
The embodiment provides a marine energy comprehensive utilization device system based on hydrogen-fired power generation system, the marine energy comprehensive utilization device system comprises a renewable energy power generation system, a seawater hydrogen production system, a hydrogen-fired power generation system and a comprehensive energy control system, the seawater hydrogen production system and the hydrogen-fired power generation system are connected in sequence, and the comprehensive energy control system is respectively connected with the renewable energy power generation system, the seawater hydrogen production system and the hydrogen-fired power generation system.
The renewable energy power generation system comprises a floating wave energy power generation unit 1, a tidal energy power generation unit 2, a floating photovoltaic power generation unit 3 and an offshore wind power generation unit 4.
The seawater hydrogen production system comprises a seawater desalination unit 8, an electrolyzed water hydrogen production unit 9 and a hydrogen treatment unit 10; the seawater desalination unit 8 comprises a reservoir, a water supply pump, an ultrafiltration device, an ultrafiltration water tank, a high-pressure pump, a reverse osmosis device and a fresh water tank; the unit for producing hydrogen by electrolyzing water 9 comprises an electrolytic bath, an isolating membrane and an electrode. The schematic diagram of the hydrogen processing unit 10 is shown in fig. 2, and the hydrogen processing unit 10 includes a compression device 18, a hydrogen storage device 19, a hydrogen filtering device 20, a hydrogen component analysis device 21, a flow measuring device 22 and an adjusting device which are connected in sequence along the hydrogen conveying direction. The regulating devices comprise a hydrogen regulating device 23 of a hydrogen-burning gas turbine and a hydrogen regulating device 24 of a hydrogen-burning internal combustion engine; the flow measuring device 22 is also connected to a hydrogen supply connection 25.
The comprehensive energy control system comprises an intelligent control unit 5, a hydrogen-burning power generation system control unit 6 and a grid-connected control unit 7; the grid-connected control unit 7 comprises a grid-connected controller.
The hydrogen-burning power generation system comprises a hydrogen-burning gas turbine generator set 11 and a hydrogen-burning internal combustion engine generator set 12; the hydrogen-burning gas turbine generator set 11 comprises a hydrogen-burning gas turbine, a generator and a waste heat boiler. The hydrogen-burning internal combustion engine generator set comprises a hydrogen-burning internal combustion engine, a generator and a lithium bromide absorption refrigerator.
The embodiment also provides a comprehensive utilization method of offshore energy based on the hydrogen-fired power generation system, and the comprehensive utilization method of offshore energy is carried out by adopting the comprehensive utilization device system of offshore energy based on the hydrogen-fired power generation system.
The comprehensive utilization method of the offshore energy comprises the following steps:
the floating wave energy generator set, the tidal energy generator set and the offshore wind power generator set in the renewable energy power generation system jointly generate power, the generated power is divided into three paths, the first path is transmitted to a seawater desalination unit 8 of a seawater hydrogen production system, the second path is transmitted to an electrolyzed water hydrogen production unit 9 of the seawater hydrogen production system, and the third path is transmitted to a power grid for power supply through an intelligent control unit 5 and a grid-connected control unit 7 of a comprehensive energy control system;
clean water generated by the seawater desalination unit 8 is supplied to the electrolyzed water hydrogen production unit 9, and the clean water generated by the seawater desalination system is used for delivering clean fresh water to the outside to realize water supply after meeting the requirements of the electrolyzed water hydrogen production unit 9;
hydrogen generated by the water electrolysis hydrogen production unit 9 is conveyed to a hydrogen-burning power generation system through a hydrogen treatment unit 10, and the hydrogen generated by the water electrolysis hydrogen production unit 9 is collected, stored or output outwards by the hydrogen treatment unit 10 to realize hydrogen supply after meeting the requirements of the hydrogen-burning power generation system;
the electric power generated by a hydrogen-burning gas turbine generator set 11 of the hydrogen-burning power generation system is transmitted to a power grid for power supply through a hydrogen-burning power generation system control unit 6 and a grid-connected control unit; the hydrogen-burning gas turbine generator set 11 utilizes exhaust gas generated after hydrogen gas burns to do work to be recycled through a waste heat boiler, and steam is output to realize heat supply;
the grid-connected control unit 7 detects that the power grid load is 300MW smaller than the grid-connected power generation power of the renewable energy power generation system, 400MW, the grid-connected control unit 7 sends a first instruction to the intelligent control system, the intelligent control system cuts out the floating wave energy power generator set in the renewable energy power generation system according to the matching of the power grid load and the power generation power and the practical situation on the sea, the cut power generation power is transmitted to the seawater hydrogen production system for seawater desalination unit and water electrolysis hydrogen production, and clean water and hydrogen can be output outwards.
Example 2
This embodiment provides a marine energy complex utilization apparatus system based on a hydrogen-fired power generation system, which is the same as in embodiment 1.
The embodiment also provides a comprehensive utilization method of offshore energy based on the hydrogen-fired power generation system, in the comprehensive utilization method of offshore energy, the grid-connected control unit 7 detects that the power grid load is 400MW which is larger than the grid-connected power generation power of the renewable energy power generation system by 300MW, the grid-connected control unit 7 sends a second instruction to the intelligent control system, the intelligent control system cuts the floating wave energy power generator set used for the seawater hydrogen production system in the renewable energy power generation system into the power grid according to the matching property of the power grid load and the power generation power, and the rest is the same as that in the embodiment 1.
Example 3
This embodiment provides a marine energy complex utilization apparatus system based on a hydrogen-fired power generation system, which is the same as in embodiment 1.
The embodiment also provides a comprehensive utilization method of offshore energy based on a hydrogen-burning power generation system, in the comprehensive utilization method of offshore energy, all renewable energy power generation systems are put into grid-connected power generation, the load of a power grid is 500MW and is still larger than the grid-connected power generation power of 400MW, a grid-connected control unit 7 sends a second instruction to the hydrogen-burning power generation system, the hydrogen-burning power generation system control unit puts into a hydrogen-burning internal combustion engine generator set 12 according to the matching property of the load of the power grid and the power generation power, and the rest is the same as that in embodiment 1.
It can be seen from the comprehensive embodiments 1 to 3 that the marine energy comprehensive utilization device system and method based on the hydrogen-fired power generation system provided by the invention can solve the problem of poor matching between the power grid load and the power generation power of the renewable energy power generation system, can provide stable and high-quality power for the power grid, simultaneously realize green and environmental protection and zero carbon emission, meet the requirements of energy conservation and emission reduction of the power system, and can also fully utilize the current generated by the surplus renewable energy power generation system to output clean water, hydrogen and steam outwards.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. A comprehensive utilization device system of offshore energy based on a hydrogen-fired power generation system is characterized in that the comprehensive utilization device system of offshore energy comprises a renewable energy power generation system, a seawater hydrogen production system, a hydrogen-fired power generation system and a comprehensive energy control system;
the seawater hydrogen production system and the hydrogen-burning power generation system are sequentially connected, and the comprehensive energy control system is respectively connected with the renewable energy power generation system, the seawater hydrogen production system and the hydrogen-burning power generation system.
2. The offshore energy complex utilization device system of claim 1, wherein the renewable energy power generation system comprises a combination of at least two of a floating wave energy generator set, a tidal energy generator set, a floating photovoltaic generator set, or an offshore wind turbine set.
3. The comprehensive offshore energy utilization device system according to claim 1 or 2, wherein the seawater hydrogen production system comprises a seawater desalination unit and an electrolyzed water hydrogen production unit which are connected in sequence;
preferably, the seawater desalination unit comprises a seawater storage device, a first water delivery device, an ultrafiltration water storage device, a second water delivery device, a reverse osmosis device and a fresh water storage device;
preferably, the seawater desalination unit is further provided with an external fresh water supply interface;
preferably, the water electrolysis hydrogen production unit comprises an electrolysis device, a separation device and an electrode.
4. The offshore energy comprehensive utilization device system of claim 3, wherein the seawater hydrogen production system further comprises a hydrogen treatment unit connected to the electrolyzed water hydrogen production unit;
preferably, the hydrogen processing unit comprises a compression device, a hydrogen storage device, a hydrogen filtering device, a hydrogen component analysis device, a flow measuring device and an adjusting device which are connected in sequence along the hydrogen conveying direction.
5. The offshore energy complex utilization device system of claim 4, wherein the regulating device comprises a hydrogen-fired gas turbine hydrogen regulating device and a hydrogen-fired internal combustion engine hydrogen regulating device;
preferably, the hydrogen processing unit further comprises an external hydrogen supply interface connected with the flow measuring device.
6. The offshore energy comprehensive utilization device system according to any one of claims 1 to 5, wherein the comprehensive energy control system comprises an intelligent control unit, a hydrogen-fired power generation system control unit and a grid-connected control unit;
preferably, the grid-connected control unit is respectively connected with the intelligent control unit and the hydrogen-burning power generation system control unit;
preferably, the grid-connected control unit comprises a grid-connected controller.
7. The offshore energy comprehensive utilization device system of claim 6, wherein the hydrogen-fired power generation system comprises a hydrogen-fired gas turbine generator set and a hydrogen-fired internal combustion engine generator set;
preferably, the hydrogen-combustion gas turbine generator set comprises a hydrogen-combustion gas turbine, a generator and a waste heat boiler;
preferably, the hydrogen-fired gas turbine generator set is further provided with an external heat supply interface;
preferably, the hydrogen-burning internal combustion engine generator set comprises a hydrogen-burning internal combustion engine, a generator and a lithium bromide absorption refrigeration device.
8. A comprehensive utilization method of offshore energy based on a hydrogen-fired power generation system is characterized in that the comprehensive utilization method of offshore energy is carried out by adopting the comprehensive utilization device system of offshore energy based on the hydrogen-fired power generation system as claimed in any one of claims 1 to 7.
9. The offshore energy integrated utilization method of claim 8, comprising:
according to the relation between the power grid load and the power generated by the renewable energy power generation system, the comprehensive energy control system controls the input condition of the seawater hydrogen production system and/or the hydrogen combustion power generation system;
the power generated by the renewable energy power generation system is transmitted to the seawater hydrogen production system, the hydrogen-burning power generation system and the power grid through the comprehensive energy control system, and the comprehensive energy control system regulates and controls the power generation conditions of the renewable energy power generation system, the seawater hydrogen production system and the hydrogen-burning power generation system according to the load condition of the power grid.
10. The comprehensive utilization method of offshore energy according to claim 8 or 9, wherein the power generated by the renewable energy power generation system is divided into three paths, the first path is transmitted to a seawater desalination unit of a seawater hydrogen production system, the second path is transmitted to an electrolyzed water hydrogen production unit of the seawater hydrogen production system, and the third path is transmitted to a power grid for power supply through an intelligent control unit and a grid-connected control unit of the comprehensive energy control system;
preferably, the clean water produced by the seawater desalination unit is supplied to the electrolyzed water hydrogen production unit, and the clean water produced by the seawater desalination system is used for delivering clean fresh water to the outside to realize water supply after meeting the requirements of the electrolyzed water hydrogen production unit;
preferably, the hydrogen generated by the water electrolysis hydrogen production unit is conveyed to a hydrogen-burning power generation system through a hydrogen treatment unit;
preferably, the hydrogen generated by the water electrolysis hydrogen production unit is collected by the hydrogen treatment unit after meeting the requirements of the hydrogen-burning power generation system, and then is stored and/or is output outwards;
preferably, the electric power generated by the hydrogen-fired gas turbine generator set of the hydrogen-fired power generation system is transmitted to a power grid for power supply through the hydrogen-fired power generation system control unit and the grid-connected control unit;
preferably, the hydrogen-fired gas turbine generator set utilizes exhaust gas generated after hydrogen is combusted to apply work to be recovered by a waste heat boiler, and steam is output to realize heat supply;
preferably, when the grid-connected control unit detects that the grid load is smaller than the grid-connected power generation power of the renewable energy power generation system, the grid-connected control unit sends a first instruction to the intelligent control system, the intelligent control system selects one or at least two generator sets in the renewable energy power generation system according to the matching of the grid load and the power generation power, and the cut power generation power is transmitted to the seawater hydrogen production system;
preferably, when the grid-connected control unit detects that the load of the power grid is greater than the grid-connected power generation power of the renewable energy power generation system, the grid-connected control unit sends a second instruction to the intelligent control system, and the intelligent control system switches a generator set for the seawater hydrogen production system in the renewable energy power generation system into the power grid according to the matching property of the load of the power grid and the power generation power;
preferably, when the renewable energy power generation system is completely put into grid-connected power generation and the grid load is still greater than the grid-connected power generation power, the grid-connected control unit sends a second instruction to the hydrogen-fired power generation system, and the hydrogen-fired power generation system control unit selects to put into the hydrogen-fired internal combustion engine generator set and/or the hydrogen-fired gas turbine generator set according to the matching property of the grid load and the power generation power to carry out grid-connected power generation.
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