CN110518607B - Hydropower station self-absorption hydrogen and electricity combined power station power utilization system and method - Google Patents
Hydropower station self-absorption hydrogen and electricity combined power station power utilization system and method Download PDFInfo
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- CN110518607B CN110518607B CN201910942306.1A CN201910942306A CN110518607B CN 110518607 B CN110518607 B CN 110518607B CN 201910942306 A CN201910942306 A CN 201910942306A CN 110518607 B CN110518607 B CN 110518607B
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 195
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 195
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 174
- 230000005611 electricity Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 13
- 239000001301 oxygen Substances 0.000 claims abstract description 85
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 85
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000004519 manufacturing process Methods 0.000 claims abstract description 51
- 239000000446 fuel Substances 0.000 claims abstract description 29
- 239000002737 fuel gas Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 48
- 239000006096 absorbing agent Substances 0.000 claims description 36
- 239000003513 alkali Substances 0.000 claims description 21
- 238000009833 condensation Methods 0.000 claims description 21
- 230000005494 condensation Effects 0.000 claims description 20
- 150000002431 hydrogen Chemical class 0.000 claims description 17
- 238000005868 electrolysis reaction Methods 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 9
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000010977 unit operation Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 10
- 238000001035 drying Methods 0.000 description 5
- 238000007726 management method Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 238000013439 planning Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000124879 Grus leucogeranus Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000012384 transportation and delivery Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
- C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/22—Fuel cells in which the fuel is based on materials comprising carbon or oxygen or hydrogen and other elements; Fuel cells in which the fuel is based on materials comprising only elements other than carbon, oxygen or hydrogen
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention relates to the technical field of hydroelectric generation, in particular to a self-absorption hydrogen and electricity combined power station power consumption system and method for a hydropower station. The device comprises a 0.4KV bus power supply end, a direct current power utilization system, an alternating current power utilization system, an AC/DC device, a DC/AC device, an electrolytic hydrogen production device, an oxygen storage device, a hydrogen storage device and a hydrogen fuel cell, wherein the 0.4KV bus power supply end is electrically connected with the direct current power utilization system and the electrolytic hydrogen production device power supply end through the AC/DC device, an oxygen output end and a hydrogen output end of the electrolytic hydrogen production device are respectively connected with the oxygen storage device and the hydrogen storage device, an oxygen outlet of the oxygen storage device and a hydrogen outlet of the hydrogen storage device are both connected with a fuel gas inlet of the hydrogen fuel cell, and a power output end of the hydrogen fuel cell is electrically connected with the alternating current power utilization system through the DC/AC device. The utility ratio of the equipment of the factory power system is improved. After the system is adopted, the equipment is in a full-load running state for a long time, the loss rate in the electricity utilization process is low, and the economical efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of hydroelectric generation, in particular to a self-absorption hydrogen and electricity combined power station power consumption system and method for a hydropower station.
Background
The problem of water disposal caused by the fact that the electric energy of the hydropower station cannot be consumed can cause huge economic loss. According to the online data, in 2017, sichuan published the water-saving electricity peak regulation and water-discarding loss electricity of 140 hundred million kilowatt-hours, and industry statistics water-saving electricity water-discarding reaches 377 hundred million kilowatt-hours, and the electricity of 550 hundred million kilowatt-hours is completely saved. The online data show that the annual water and electricity discarding of the hydropower station of the domestic dam and the adjacent stream ferry hydropower station are totally about 60 hundred million degrees under the influence of unsmooth scheduling of each power station in the Jinsha river basin. Meanwhile, the phenomenon of water and electricity abandoning exists in the hydropower stations of the domestic dam and the stream ferry every year under the influence of unsmooth scheduling of all power stations of the Jinsha river trunk and branch flows, and if all the power stations of the trunk and branch flows are managed continuously, artificial flood peaks can be generated or are aggravated. The large hydropower stations currently under construction in Jinshajiang, as well as the white crane beach hydropower station and the Wu Dongde hydropower station, are put into operation in 2020 and 2021 respectively. "
Because of the different statistical apertures of industries, the amount of water discarded in practical hydropower stations of various types is very difficult to put forward an accurate value, but an important requirement is brought forth by the problem, namely the water energy utilization efficiency is improved.
Traditionally, the main cost investment of a hydropower station is the construction cost of an engineering construction period and the operation cost of an operation period; the main income is the electricity fee income of the power station, and the more the electric quantity is delivered to the power grid, the higher the economic income. But is limited by external factors such as rapid development of hydropower and slow mismatch of power demand growth; water is fed in the flood season in a partial abundance mode, and water is required to be regulated by hydropower peak regulation and discarded in the low-valley period; the existing delivery channel capability has potential to be dug; local grid weakness and limited extra-high voltage transmission channel capacity; for various reasons such as thermal power dispatching operation management to be further optimized, the electric energy which can be generated by the hydropower station is larger than the electric network and can be consumed, and the water discarding problem can occur.
At present, each large hydropower station is more dependent on factors such as external coordination scheduling operation management, electric energy consumption channels, user consumption and the like to solve the problem of consumption of surplus electric energy. And the power supply planning, the power grid planning and the load demand need to be simultaneously and coordinately solved by multiple departments, so that the difficulty of solving is high, and the coordination range is wide. Thus, hydropower stations "surplus electrical energy" can be consumed internally by the station (zero emissions) and are thus no longer dependent on the grid and scheduling, which is an extremely challenging task.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a hydropower station self-absorption hydrogen and electricity combined power supply station power utilization system and method for realizing hydrogen production, hydrogen supply, hydrogen storage and hydrogen fuel cell power supply by utilizing surplus power of a hydropower station.
The invention relates to a hydropower station self-absorption hydrogen and electricity combined power supply station power consumption system, which has the technical scheme that: the hydrogen storage device comprises a 0.4KV bus power supply end, a direct current power utilization system, an alternating current power utilization system, an AC/DC device, a DC/AC device, an electrolytic hydrogen production device, an oxygen storage device, a hydrogen storage device and a hydrogen fuel cell, wherein the 0.4KV bus power supply end is electrically connected with the direct current power utilization system and the electrolytic hydrogen production device power supply end through the AC/DC device, an oxygen output end and a hydrogen output end of the electrolytic hydrogen production device are respectively connected with the oxygen storage device and the hydrogen storage device, an oxygen outlet of the oxygen storage device and a hydrogen outlet of the hydrogen storage device are both connected with a fuel gas inlet of the hydrogen fuel cell, and a power output end of the hydrogen fuel cell is electrically connected with the alternating current power utilization system through the DC/AC device.
More preferably, the electrolytic hydrogen production device comprises an electrolytic tank, a pure water pump, an oxygen separator, a hydrogen separator, an oxygen valve, a hydrogen cooler, a cooling water valve and an alkali liquor recovery pump, wherein the pure water pump is communicated with water resources in a hydropower station, the output end of the pure water pump is communicated with the water inlet end of the electrolytic tank, the electrolytic tank is respectively communicated with the hydrogen separator and the oxygen separator through a hydrogen pipeline and an oxygen pipeline, the hydrogen separator is communicated with the hydrogen storage device through the hydrogen valve, the oxygen separator is communicated with the oxygen storage device through the oxygen valve, and the alkali liquor outlets of the hydrogen separator and the oxygen separator are communicated with the electrolytic tank through the alkali liquor recovery pump.
More preferably, the hydrogen storage device comprises a first dry absorber, a second dry absorber, a hydrogen storage tank, a booster pump, a condensation separator and a valve, wherein an air inlet of the hydrogen storage device is communicated with the condensation separator through the valve, an output port of the condensation separator is respectively communicated with the first dry absorber and the second dry absorber, and air outlets of the first dry absorber and the second dry absorber are communicated with an air inlet of the hydrogen storage tank through the valve.
More preferably, the oxygen storage device comprises a dry absorber A, a dry absorber B, an oxygen storage tank, a booster pump, a condensation separator and a valve, wherein an air inlet of the oxygen storage device is communicated with the condensation separator through the valve, an output port of the condensation separator is respectively communicated with the dry absorber A and the dry absorber B, and air outlets of the dry absorber A and the dry absorber B are communicated with an air inlet of the oxygen storage tank through the valve.
The invention relates to a hydropower station self-absorption hydrogen and electricity combined power supply station power utilization method, which comprises the following steps:
an electrolysis hydrogen production device is arranged in a hydropower station, water resources of the hydropower station are adopted as electrolysis water, the electrolysis water of alternating current output by a 0.4KV bus of station power of the hydropower station is utilized to produce hydrogen, and the hydrogen is sent into a hydrogen fuel cell to generate electric energy which is fed back to the station power;
when the hydropower station is in normal operation, the normal power load of the station is preferentially ensured, the hydrogen production rate is controlled, and the transformer of the power system of the station is in a full-load state;
when the conventional power load of the plant is increased due to the unit operation or overhaul load, the hydrogen production rate is reduced, and the conventional power of the plant is ensured;
when the conventional plant power load is reduced due to unit shutdown, the hydrogen production rate is increased.
Preferably, the plant power supply of the hydropower station comprises a conventional plant power supply and a hydrogen fuel cell system power supply, and the power utilization priority of the conventional plant power supply is higher than that of the hydrogen fuel cell system power supply.
The beneficial effects of the invention are as follows:
(1) The scheme improves the utilization rate of equipment of the station service electrical system. The load rate of the common conventional hydropower station power system is lower, and the loss rate in the power utilization process is high; after the system is adopted, the equipment is in a full-load running state for a long time, the loss rate in the electricity utilization process is low, and the economical efficiency is greatly improved.
(2) And the safety power sources such as a diesel generator and the like are reduced. The hydrogen energy storage system based on the hydropower station can cancel the security power supply such as a diesel generator and the like; meanwhile, a hydropower station storage battery system such as a lead-acid battery is canceled.
(3) And the economy of the hydropower station is improved. The produced hydrogen product and oxygen product can be directly used as products for sale, and the income source of hydropower stations is increased.
Drawings
FIG. 1 is a schematic diagram of a connection of a hydropower station self-absorption hydrogen and electricity combined power supply station power system;
FIG. 2 is a schematic diagram illustrating the connection of the electrolytic hydrogen production device of FIG. 1;
fig. 3 is a schematic diagram showing the connection of the hydrogen storage device of fig. 1.
In the figure: 1-AC/DC device, 2-electrolytic hydrogen production device, 2.1-oxygen separator, 2.2-hydrogen separator, 2.3-oxygen valve, 2.4-hydrogen valve, 2.5-hydrogen cooler, 2.6-cooling water valve, 2.7-pure water pump, 2.8-electrolytic tank, 2.9-lye recovery pump, 3-oxygen storage device, 3.1-dry adsorber A, 3.2-dry adsorber B, 3.3-oxygen storage tank, 3.4-booster pump, 3.5-condensation separator, 3.6-valve, 4-hydrogen storage device, 5-hydrogen fuel cell, 6-DC/AC device, 7-AC power utilization system, 8-DC power utilization system, 9-high voltage bus, 10-main transformer breaker, 11-generator breaker, 12-generator, 13-neutral point grounding device, 14-generator voltage bus, 15-high voltage plant transformer, 16-power utilization high voltage bus, 17-power utilization transformer, 18-0.4 bus.
Detailed Description
The invention will now be described in further detail with reference to the drawings and specific examples, which are given for clarity of understanding and are not to be construed as limiting the invention.
As shown in fig. 1, the self-absorption hydrogen power supply station power supply system of the hydropower station comprises a 0.4KV bus 18 power supply end, a direct current power utilization system 8, an alternating current power utilization system 7, an AC/DC device 1, a DC/AC device 6, an electrolytic hydrogen production device 2, an oxygen storage device 3, a hydrogen storage device 4 and a hydrogen fuel cell 5, wherein the 0.4KV bus 18 power supply end is electrically connected with the direct current power utilization system 8 and the power supply end of the electrolytic hydrogen production device 2 through the AC/DC device 1, an oxygen output end and a hydrogen output end of the electrolytic hydrogen production device 2 are respectively connected with the oxygen storage device 3 and the hydrogen storage device 4, an oxygen outlet of the oxygen storage device 3 and a hydrogen outlet of the hydrogen storage device 4 are both connected with a fuel gas inlet of the hydrogen fuel cell 5, and a power supply output end of the hydrogen fuel cell 5 is electrically connected with the alternating current power utilization system 7 through the DC/AC device 6.
The AC/DC device 1 is a set of rectifying device, receives alternating current power provided by a hydroelectric power generation system of a hydropower station, and rectifies the alternating current power into direct current power required by an electrolytic hydrogen production system. The AC/DC device 1 includes a semiconductor rectifying system, a control triggering system, and an operation interlocking system. The semiconductor rectifying cabinet has various running modes such as voltage stabilization, current stabilization and the like. The voltage regulating range is 0-1.0 times of the rated voltage of the electrolytic hydrogen production system, thereby realizing the regulation of the hydrogen production rate. It should be noted that the operation control manner of the AC/DC device not mentioned in this patent does not limit the protection scope of this patent.
The DC/AC device 6 is an inverter device, receives the direct current power supplied from the hydrogen fuel cell 5, and supplies power to the plant power system or directly supplies power to the alternating current power grid through the step-up transformers at each stage.
The power of the hydropower station is generated from a generator 12, is transmitted to the low-voltage side of a main transformer 10 through a generator voltage bus 14, is boosted through the main transformer 10, and is sent to a power grid through a high-voltage bus 9, wherein a generator breaker 11 is arranged in the middle of the generator voltage bus 14, and the generator 12 is grounded through a neutral point grounding device 13. The high-voltage factory transformer 15 takes electricity from the generator voltage bus 14, the electricity is sent to the factory high-voltage bus 16 through a cable after being reduced, and the factory high-voltage bus 16 is sent to the 0.4kV bus 18 through a cable after being reduced through the factory transformer 17.
The electrolytic hydrogen production device 2 consists of an electrolytic tank 2.8, accessory equipment, an alkali tank, a water supplementing system, an alkali liquor circulating pump, a control cabinet, a flame arrester, a complete instrument device, a microcomputer control system and the like. The important core component functions are introduced as follows:
the electrolytic tank 2.8 is a core device of the system and is used for preparing hydrogen and oxygen by electrolyzing water. The ancillary equipment includes, but is not limited to, the following sub-H2 (O2) lye separators; h2 (O2) an alkali liquor circulation pump; h2 (O2) lye filter; h2 (O2) a separator; h2 (O2) a cooler; h2 (O2) a drip catcher; h2 (O2) a gas-water separator, a deoxidizer, a dryer, a regenerative cooler, etc. The alkali liquor tank is used for preparing alkali liquor for the first time and conveying the alkali liquor to the hydrogen production system through the alkali liquor pump, and can be used for storing the alkali liquor returned from the hydrogen production system during maintenance. The water replenishing system is a reservoir for hydrogen production water, pure water is automatically replenished to the hydrogen production system through the water replenishing pump, and the reservoir can be used for storing alkali liquor returned from the hydrogen production system during maintenance. A power device for alkali liquor circulation.
As shown in fig. 2, the electrolytic hydrogen production device 2 comprises an electrolytic tank 2.8, a pure water pump 2.7, an oxygen separator 2.1, a hydrogen separator 2.2.2, an oxygen valve 2.3, a hydrogen cooler 2.5, a cooling water valve 2.6 and an alkali liquor recovery pump 2.9, wherein the pure water pump 2.7 is communicated with water resources in a hydropower station, the output end of the pure water pump 2.7 is communicated with the water inlet end of the electrolytic tank 2.8, the electrolytic tank 2.8 is respectively communicated with the hydrogen separator 2.2.2 and the oxygen separator 2.1 through a hydrogen valve 2.4, the hydrogen separator 2.1 is communicated with the oxygen storage device 4 through the oxygen valve 2.3, and alkali liquor outlets of the hydrogen separator 2.2.2 and the oxygen separator 2.1 are communicated with the electrolytic tank 2.8 through the alkali liquor recovery pump 2.9.
The hydrogen storage device 4 and the oxygen storage device 3 are used for storing hydrogen and oxygen produced by electrolysis water, and simultaneously comprise a gas channel for supplying hydrogen to the fuel cell 5 and a related control system, an output channel for directly supplying hydrogen and oxygen products to a hydrogen user and an oxygen user and a related control system.
The hydrogen fuel cell 5 receives the hydrogen raw material and the oxygen raw material provided by the hydrogen storage device 4 and the oxygen storage device 3, generates direct current power to supply power to a direct current system or supplies power to an alternating current plant power system through the DC/AC device 6.
The direct current power output by the AC/DC is output voltage of 0-10 kV, output current of 0-10 kA, and the power is used for supplying the electrolytic hydrogen system.
The electric energy used by the electrolytic hydrogen production device 2 is from the AC/DC device 1, and the alternating current of the AC/DC device 1 is from the 0.4KV bus 18. The raw water comes from water resources in a water-using power station, the capacity of generating hydrogen and oxygen is 0-10000 Nm3/hH2 and 0-5000 Nm3/hO2, and if a factory power system is specially modified to consider hydrogen production and energy storage, the capacity can be further increased.
And the hydrogen and the oxygen generated by the electrolytic hydrogen production system are sent into the hydrogen and oxygen storage system after a series of treatments such as drying and filtering. The storage mode comprises high-pressure storage (the pressure is 1 MPa-1000 MPa), low-temperature liquid storage and the like. The stored hydrogen and oxygen can be sold directly as a gaseous product.
Under the allocation of the control system, the stored hydrogen and oxygen are input into the fuel cell system through a high-pressure gas pipeline (0.1 MPa-3 MPa) for generating electricity, and the generated electricity is used for the consumption of a factory electricity system or the power supply of the factory electricity system, so that the electricity generation capacity of the hydropower station is increased.
As shown in fig. 3, the oxygen storage device 3 comprises a dry absorber a 3.1, a dry absorber b 3.2, an oxygen storage tank 3.3, a booster pump 3.4, a condensation separator 3.5 and a valve 3.6, wherein an air inlet of the oxygen storage device 3 is communicated with the condensation separator 3.5 through the valve 3.6, an output port of the condensation separator 3.5 is respectively communicated with the dry absorber a 3.1 and the dry absorber b 3.2, and air outlets of the dry absorber a 3.1 and the dry absorber b 3.2 are communicated with an air inlet of the oxygen storage tank 3.3 through the valve 3.6. The hydrogen storage device 4 comprises a first dry absorber, a second dry absorber, a hydrogen storage tank, a booster pump, a condensation separator and a valve, wherein an air inlet of the hydrogen storage device is communicated with the condensation separator through the valve, an output port of the condensation separator is respectively communicated with the first dry absorber and the second dry absorber, and air outlets of the first dry absorber and the second dry absorber are communicated with an air inlet of the hydrogen storage tank through the valve. The hydrogen storage device 4 has the same structure as the oxygen storage device 3.
The invention relates to a hydropower station self-absorption hydrogen and electricity combined power supply station power supply method, which is characterized in that an electrolysis hydrogen production device 2 is arranged in a hydropower station, water resources of the hydropower station are adopted as electrolysis water, alternating current output by a 0.4KV bus 18 of the hydropower station is utilized to electrolyze water to generate hydrogen, and the hydrogen is sent to a hydrogen fuel cell to generate electric energy to be fed back to the station power.
The operation control strategy of the hydropower station self-consumption hydrogen and electricity combined power supply station power consumption system is as follows:
(1) The power utilization load of the power utilization system of the plant is divided into two main types of conventional power utilization load and hydrogen production load; the plant power supply comprises a conventional power taking power supply and a hydrogen fuel cell system power supply.
(2) Priority of power supply to the electrical load: the conventional plant electric load is more than hydrogen production load. Under the conventional operation condition, the conventional power load of the plant is preferentially ensured, and the power system transformer of the plant is basically in a full-load state by controlling the hydrogen production rate. When the conventional plant power load is increased due to the unit operation or overhaul load, the hydrogen production rate is reduced through the energy management system, the hydrogen production load is reduced, and the conventional plant power is ensured; when the conventional plant electrical load is reduced due to unit shutdown, the hydrogen production rate is increased through the energy management system, and the hydrogen production load is increased. If the temporary sudden power load increase exists, the working condition that the energy management system cannot react in time is utilized, the short-time overload capacity of the factory transformer is utilized, the hydrogen production load is reduced rapidly, and the overload operation time of the system is shortened.
(3) Priority of power source: conventional power-taking power source > hydrogen fuel cell system power source. Under the normal operation condition, the power is preferentially taken from the normal station service power supply system. When the conventional power supply is powered down, the hydrogen fuel cell system is started to supply power to the load.
Example 1
As shown in fig. 1, the conventional hydropower station power consumption system is specifically configured as follows:
in this embodiment, the adopted generator voltage bus type is a phase separation enclosed bus, the adopted main transformer is a parameter of 223MVA,550 kV+/-2 x 2.5%/20kV, and the single-phase transformer is cooled by OFWF (forced oil water cooling).
The electric energy is sent to a high-voltage bus after being boosted by a main transformer, and then enters a power grid; in the embodiment, a 500kV cable is adopted to connect the high-voltage side of the main transformer with a high-voltage 500kV bus; the 500kV high-voltage bus adopts a gas metal closed switch, namely a GIS. The high-side connection pattern is 3/2 connection.
The high-power plant transformer leads out a branch bus from a generator voltage bus, so that a plant power supply is obtained from a generator end. In the embodiment, the branch bus also adopts a phase separation enclosed bus, and the generator voltage bus is directly connected into the high-speed plant transformer through the branch bus; the main variable parameters of the high-voltage transformer are 3MVA,20 kV+/-2X 2.5%/10kV, and the cooling mode is ONAN (oil immersed self-cooling).
The electric energy of the station service is reduced to 10kV voltage by a high-voltage station and then is sent to a high-voltage bus for the 10kV station. In the embodiment, the high-voltage bus for the factory is formed by adopting a 10kV metal switch cabinet, the electric energy of the factory is firstly connected into a 10kV incoming line cabinet, and then the high-voltage bus for the factory is sent into the factory through the 10kV outgoing line cabinet. As shown in fig. 2.
The 10kV outlet cabinet is sent into a factory transformer through a 10kV cable, in the embodiment, the main parameter of the factory transformer is 6MVA,10 kV+/-2 x 2.5%/0.4kV, and the three-phase transformer is cooled by ONAN (oil immersed self-cooling). The factory transformer is connected with a 0.4kV bus in a copper bar cabinet, and the 0.4kV bus is formed by a 0.4kV metal switch cabinet. After the factory is connected into the inlet wire cabinet of the 0.4kV bus, electric energy is fed into the electrolytic hydrogen production device through the feeder wire cabinet. The 0.4kV bus is shown in figure 3.
In this example, the hydrogen production capacity of the electrolytic hydrogen production device is 1500 N.m3/h, and the hydrogen production power under this capacity is 4.8MW. And 3 single-phase rectifying cabinets are connected to the 0.4kV bus. Each single-phase rectifying cabinet is respectively connected to an electrolytic tank, and direct current is input into the electrolytic tank.
After the electrolytic tank 2.8 receives the direct current provided by the AC/DC device, the pure water pump 2.7 works and the alkali liquor recovery pump 2.9 works simultaneously, and pure water (through a pure water pipeline) and alkali liquor (through an alkaline liquid pipeline) are input into the electrolytic tank 2.8. The electrolytic tank 2.8 produces hydrogen and oxygen at this time, and the hydrogen and oxygen are respectively sent to the hydrogen separator 2.2 and the oxygen separator 2.1 through a hydrogen pipeline and an oxygen pipeline. Purifying in a hydrogen separator 2.2 and an oxygen separator 2.1, and sending water vapor contained in the separated gas into an alkali liquor recovery pump 2.9; simultaneously, the temperature of the gas is reduced in the hydrogen separator 2.2 and the oxygen separator 2.1 respectively, so that the hydrogen and the oxygen reach certain purity, and the hydrogen and the oxygen are sent into the hydrogen/oxygen storage device through the hydrogen valve 2.4 and the oxygen valve 2.3.
When hydrogen is sent into the hydrogen storage device, firstly, the gas is controlled to be input into the condensation separator 3.5 through the valve 3.6, the condensation separator 3.5 sends the input gas into different drying adsorbers, the drying adsorbers A3.1 and the drying adsorbers B3.2, and the quantity of the drying adsorbers can be adjusted according to the required hydrogen quality and the required air supply quantity in the actual engineering. After the adsorber is dried, the gas purity is further improved, generally up to 99.999%, and then the gas is sent to the hydrogen storage tank 3.3 through the valve 3.6. At any place of the pipeline shown in the figure, a booster pump 3.4 (not shown in the figure) can be added as required so that the stored hydrogen gas reaches a required pressure value.
The oxygen storage process is the same as hydrogen and will not be described here.
The hydrogen and oxygen stored in the hydrogen storage system or the oxygen storage system shown in fig. 1 can be directly sold as gas products, so that the business income of the hydropower station is increased. And secondly, under special operation conditions, such as disconnection of a power station and a system, external power supply is needed, and the direct current can be generated by inputting hydrogen and oxygen into the hydrogen fuel cell system and is sent into the DC/AC system, so that the alternating current used by the power station and plant power system is inverted to be used for supplying power to all plant power equipment, and the hydrogen power supply is realized.
What is not described in detail in this specification is prior art known to those skilled in the art.
Claims (3)
1. A hydropower station self-absorption hydrogen electricity combined power supply station power consumption system is characterized in that: the hydrogen storage device comprises a 0.4KV bus (18) power supply end, a direct current power utilization system (8), an alternating current power utilization system (7), an AC/DC device (1), a DC/AC device (6), an electrolytic hydrogen production device (2), an oxygen storage device (3), a hydrogen storage device (4) and a hydrogen fuel cell (5), wherein the 0.4KV bus (18) power supply end is electrically connected with the direct current power utilization system (8) and the power supply end of the electrolytic hydrogen production device (2) through the AC/DC device (1), an oxygen output end and a hydrogen output end of the electrolytic hydrogen production device (2) are respectively connected with the oxygen storage device (3) and the hydrogen storage device (4), an oxygen outlet of the oxygen storage device (3) and a hydrogen outlet of the hydrogen storage device (4) are both connected with a fuel gas inlet of the hydrogen fuel cell (5), and a power supply output end of the hydrogen fuel cell (5) is electrically connected with the alternating current power utilization system (7) through the DC/AC device (6);
the electrolytic hydrogen production device (2) comprises an electrolytic tank (2.8), a pure water pump (2.7), an oxygen separator (2.1), a hydrogen separator (2.2), an oxygen valve (2.3), a hydrogen cooler (2.5), a cooling water valve (2.6) and an alkali liquor recovery pump (2.9), wherein the pure water pump (2.7) is communicated with water resources in the hydropower station, the output end of the pure water pump (2.7) is communicated with the water inlet end of the electrolytic tank (2.8), the electrolytic tank (2.8) is respectively communicated with the hydrogen separator (2.2) and the oxygen separator (2.1) through a hydrogen valve (2.4), the oxygen separator (2.1) is communicated with the oxygen storage device (3) through the oxygen valve (2.3), and the outlets of the hydrogen separator (2.2) and the oxygen separator (2.1) are communicated with the electrolytic tank (2.8) through the alkali liquor recovery pump (2.9);
the hydrogen storage device (4) comprises a first dry absorber, a second dry absorber, a hydrogen storage tank, a booster pump, a condensation separator and a valve, wherein an air inlet of the hydrogen storage device is communicated with the condensation separator through the valve, an output port of the condensation separator is respectively communicated with the first dry absorber and the second dry absorber, and air outlets of the first dry absorber and the second dry absorber are communicated with an air inlet of the hydrogen storage tank through the valve;
the oxygen storage device (3) comprises a dry absorber A (3.1), a dry absorber B (3.2), an oxygen storage tank (3.3), a booster pump (3.4), a condensation separator (3.5) and a valve (3.6), wherein an air inlet of the oxygen storage device (3) is communicated with the condensation separator (3.5) through the valve (3.6), an outlet of the condensation separator (3.5) is respectively communicated with the dry absorber A (3.1) and the dry absorber B (3.2), and an air outlet of the dry absorber A (3.1) and an air outlet of the dry absorber B (3.2) are communicated with an air inlet of the oxygen storage tank (3.3) through the valve (3.6).
2. The hydropower station self-absorption hydrogen and electricity combined power supply station power consumption method of the hydropower station self-absorption hydrogen and electricity combined power supply station power consumption system of claim 1, wherein the method comprises the following steps: an electrolysis hydrogen production device is arranged in a hydropower station, water resources of the hydropower station are adopted as electrolysis water, the electrolysis water of alternating current output by a 0.4KV bus of station power of the hydropower station is utilized to produce hydrogen, and the hydrogen is sent into a hydrogen fuel cell to generate electric energy which is fed back to the station power;
when the hydropower station is in normal operation, the normal power load of the station is preferentially ensured, the hydrogen production rate is controlled, and the transformer of the power system of the station is in a full-load state;
when the conventional power load of the plant is increased due to the unit operation or overhaul load, the hydrogen production rate is reduced, and the conventional power of the plant is ensured;
when the conventional plant power load is reduced due to unit shutdown, the hydrogen production rate is increased.
3. The hydropower station self-consuming hydrogen and electricity combined power supply station power utilization method as claimed in claim 2, wherein: the station power supply of the hydropower station comprises a conventional station power supply and a hydrogen fuel cell system power supply, and the power utilization priority of the conventional station power supply is higher than that of the hydrogen fuel cell system power supply.
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| CN113422383A (en) * | 2021-05-07 | 2021-09-21 | 大唐水电科学技术研究院有限公司 | System and method for processing excess electric energy of hydropower station |
| CN114032559B (en) * | 2021-11-08 | 2023-05-26 | 阳光电源股份有限公司 | New energy off-grid hydrogen production system and method |
| CN115140712A (en) * | 2022-06-22 | 2022-10-04 | 清华大学 | Alkaline electrolyzed water hydrogen production system, oxygen impurity removal protection device and protection method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012027925A1 (en) * | 2010-09-03 | 2012-03-08 | 江苏中靖新能源科技有限公司 | Polymer type hydrogen fuel cell having hydrogen generation device and control system |
| US8347645B1 (en) * | 2010-02-05 | 2013-01-08 | Marz Industries, Inc. | Hydrogen fuel cell driven HVAC and power system for engine-off operation including PEM regenerative hydrogen production |
| CN107017651A (en) * | 2017-05-22 | 2017-08-04 | 北京鑫海港亿科技有限公司 | The hydrogen fuel composite battery and its electricity-generating method of a kind of wind power hydrogen production energy storage |
| CN207010249U (en) * | 2017-07-14 | 2018-02-13 | 北京理工大学 | A kind of hydrogen fuel composite battery of wind power hydrogen production energy storage |
| CN109995081A (en) * | 2019-04-15 | 2019-07-09 | 杨清萍 | A kind of clean energy resource power generating and hydrogen producing, hydrogen energy storage cogeneration system |
| CN210577821U (en) * | 2019-09-30 | 2020-05-19 | 长江勘测规划设计研究有限责任公司 | Hydropower station self-absorption hydrogen-electricity combined plant power utilization system |
-
2019
- 2019-09-30 CN CN201910942306.1A patent/CN110518607B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8347645B1 (en) * | 2010-02-05 | 2013-01-08 | Marz Industries, Inc. | Hydrogen fuel cell driven HVAC and power system for engine-off operation including PEM regenerative hydrogen production |
| WO2012027925A1 (en) * | 2010-09-03 | 2012-03-08 | 江苏中靖新能源科技有限公司 | Polymer type hydrogen fuel cell having hydrogen generation device and control system |
| CN107017651A (en) * | 2017-05-22 | 2017-08-04 | 北京鑫海港亿科技有限公司 | The hydrogen fuel composite battery and its electricity-generating method of a kind of wind power hydrogen production energy storage |
| CN207010249U (en) * | 2017-07-14 | 2018-02-13 | 北京理工大学 | A kind of hydrogen fuel composite battery of wind power hydrogen production energy storage |
| CN109995081A (en) * | 2019-04-15 | 2019-07-09 | 杨清萍 | A kind of clean energy resource power generating and hydrogen producing, hydrogen energy storage cogeneration system |
| CN210577821U (en) * | 2019-09-30 | 2020-05-19 | 长江勘测规划设计研究有限责任公司 | Hydropower station self-absorption hydrogen-electricity combined plant power utilization system |
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