CN113629852A - Method for using photovoltaic electric energy and auxiliary electricity in complementary manner as power source of hydrogen production equipment - Google Patents
Method for using photovoltaic electric energy and auxiliary electricity in complementary manner as power source of hydrogen production equipment Download PDFInfo
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- CN113629852A CN113629852A CN202110958576.9A CN202110958576A CN113629852A CN 113629852 A CN113629852 A CN 113629852A CN 202110958576 A CN202110958576 A CN 202110958576A CN 113629852 A CN113629852 A CN 113629852A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 62
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 61
- 239000001257 hydrogen Substances 0.000 title claims abstract description 61
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000000295 complement effect Effects 0.000 title claims abstract description 23
- 230000005611 electricity Effects 0.000 title abstract description 4
- 238000004146 energy storage Methods 0.000 claims abstract description 30
- 238000005265 energy consumption Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000010248 power generation Methods 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 19
- 230000003111 delayed effect Effects 0.000 claims description 14
- 238000009826 distribution Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 8
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 10
- 238000004134 energy conservation Methods 0.000 abstract description 5
- 238000005868 electrolysis reaction Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013084 building-integrated photovoltaic technology Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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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
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- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/20—Systems characterised by their energy storage means
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The invention discloses a method for using photovoltaic electric energy and station service electricity in a complementary way as a power supply of hydrogen production equipment, which comprises the following steps: step one, constructing a photovoltaic array, converting light energy into electric energy, and outputting the electric energy through a photovoltaic power grid system; the scale and the power generation capacity of the photovoltaic array are designed according to the actual load of the energy consumption of the corresponding hydrogen production equipment and the energy consumption of the auxiliary production equipment; and step two, the photovoltaic power grid system and the plant power grid system are jointly connected to the input end of the automatic power circuit switching device, and the output end of the automatic power circuit switching device is electrically connected with the hydrogen production equipment and the energy storage equipment to form a complementary circuit. According to the invention, green photovoltaic electric energy and traditional electric energy are uninterruptedly switched and stably supplied to the power supply of the hydrogen production equipment, so that the traditional high energy consumption and high pollution energy consumption of the traditional solar photovoltaic water electrolysis hydrogen production are reduced, and the purposes of energy conservation, consumption reduction and emission reduction are achieved.
Description
Technical Field
The invention relates to the technical field of electric energy optimization, in particular to a method for using photovoltaic electric energy and station service electricity in a complementary manner as a power supply of hydrogen production equipment.
Background
With the increasing severity of energy problems, the tongs fall behind to eliminate the capacity, the backward 'forced shutdown' of coal power and the new development mode of 'multi-energy complementation' of coal power enterprises are pushed, and the gradual elimination of the traditional high-pollution and high-energy-consumption power generation mode is a necessary trend.
And the method explores and constructs the high integration of wind power, photovoltaic, energy storage and fire energy grid source charge storage, and the resources of a power supply side, a power grid side and a load side are optimized and integrated through an innovation mode to form a novel power system which is suitable for consuming new energy at a high proportion. The photovoltaic electric energy is a green energy which is very easy to obtain and less restricted by the environment, and can be introduced into a plant power system to be used as a power supply of the hydrogen production equipment with high energy consumption for mutual compensation.
The invention mainly explains how photovoltaic electric energy and plant service power can be mutually and automatically switched to be used as a power supply for hydrogen production equipment to produce hydrogen, thereby achieving the purposes of energy conservation, consumption reduction, emission reduction and carbon neutralization.
Disclosure of Invention
The invention aims to provide a method for using photovoltaic electric energy and service power in a complementary manner as a power supply of hydrogen production equipment, so as to solve the technical problem of how to mutually and automatically switch the photovoltaic electric energy and the service power of a power plant.
In order to achieve the purpose, the invention provides the following technical scheme:
the method for using photovoltaic electric energy and auxiliary power in a complementary manner as a power source of hydrogen production equipment comprises the following steps:
step one, constructing a photovoltaic array, converting light energy into electric energy, and outputting the electric energy through a photovoltaic power grid system;
the scale and the power generation capacity of the photovoltaic array are designed according to the actual load of the energy consumption of the corresponding hydrogen production equipment and the energy consumption of the auxiliary production equipment;
step two, the photovoltaic power grid system and the plant power grid system are jointly connected to the input end of the automatic power circuit switching device, and the output end of the automatic power circuit switching device is electrically connected with the hydrogen production equipment and the energy storage equipment to form a complementary circuit;
the automatic switching device of the power supply circuit comprises a detection control device, a main switcher and four wiring terminals, wherein the four wiring terminals are respectively and electrically connected with the photovoltaic power grid system, the plant power grid system, the hydrogen production equipment and the energy storage equipment;
when the photovoltaic power grid system meets the requirement of the power system of the hydrogen production equipment, automatically switching the load to the photovoltaic power grid system through the automatic power circuit switching device, and directly supplying power to the hydrogen production equipment through the photovoltaic power grid system;
when the power supply voltage of the photovoltaic power grid system is lower than the requirement of a power system of the hydrogen production equipment, the load is switched by the automatic switching device of the power circuit and is directly supplied by the power plant power grid system;
when the plant power grid system directly supplies power to the hydrogen production equipment, the power circuit automatic switching device electrically connects the photovoltaic power grid system with the energy storage equipment and is used for storing electric energy into the energy storage equipment.
Further, the placing chamber is internally provided with a drawer, the bottom surface of the drawer is symmetrically provided with through holes, and the through holes are matched with the elastic pushing blocks arranged on the bottom surface of the inner side of the placing chamber, so that the stacked test paper is in full contact with the roller shaft.
Further, in the first step, the photovoltaic array includes photovoltaic square matrix, lightning protection combiner box, direct current power distribution cabinet, grid-connected inverter, alternating current power distribution cabinet, SVG reactive compensation system, voltage boosting system, high voltage protection system, direct current system, measurement access system, monitoring communication system, lightning protection system, lighting system, fire extinguishing system, heating and ventilation system, water supply and drainage system and security system.
Further, in the first step, the photovoltaic array comprises photovoltaic multi-silicon solar cell modules arranged by adopting a photovoltaic building integration technology and polycrystalline silicon solar cell modules arranged on vacant sites, vacant grounds along railways and roadbed, and the peak power of the polycrystalline silicon solar cell modules is 250 Wp.
Furthermore, the detection control device also comprises a logic locking module, and a power grid fault detection module, a first photovoltaic control module and a second photovoltaic control module which are respectively connected with the logic locking module;
the power grid fault detection module is respectively connected with the photovoltaic power grid system and the plant power grid system, and is used for detecting whether the photovoltaic power grid system and the plant power grid system are in fault or not and transmitting a fault signal and a recovery signal to the logic locking module;
the first photovoltaic control module is connected with the energy storage equipment end and used for detecting the power supply stability of the energy storage equipment and calculating the connection duration of the energy storage equipment and a user load in the process that the main switcher switches the grid-connected photovoltaic power grid system to the off-grid photovoltaic power grid system;
the second photovoltaic control module is respectively connected with the photovoltaic power grid system and the plant power grid system end and is used for detecting the stability of the photovoltaic power grid system and the plant power grid system and calculating the connection duration of the photovoltaic power grid system and the plant power grid system with the user load in the process that the main switcher switches the off-grid photovoltaic power grid system to the grid-connected photovoltaic power grid system;
the logic locking module is connected with the main switcher, and controls the main switcher to complete switching between a grid-connected photovoltaic power grid system and an off-grid photovoltaic power grid system according to detection information of the power grid fault detection module, the first photovoltaic control module and the second photovoltaic control module.
Further, in the second step, the power circuit automatic switching device further includes a first judgment device, and the plant power grid system is coupled to the first judgment device and is used for detecting the power supply condition of the plant power grid system and outputting a first judgment signal;
the photovoltaic power grid system is coupled to the first judgment device, is used for receiving the first judgment signal and responds to the first judgment signal to realize uninterrupted power supply.
The system further comprises a first delay circuit, wherein the first delay circuit is coupled to the first judgment device and used for receiving the first judgment signal and responding to the first judgment signal to delay and disconnect the power grid system.
The photovoltaic power grid system is characterized by further comprising a second delay circuit, wherein the second delay circuit is arranged between the first delay circuit and the photovoltaic power grid system and used for receiving the first delay signal and responding to the first delay signal to delay disconnection of the photovoltaic power grid system.
The photovoltaic grid system further comprises a second judgment device and a starting and stopping device, wherein the second judgment device is coupled to the energy storage equipment and used for detecting the output voltage of the photovoltaic grid system;
the start-stop device is coupled to the first judgment device and the second judgment device at the same time and is used for receiving the first judgment signal and the second judgment signal respectively and outputting a start-stop signal to the plant power grid system so as to start and stop the plant power grid system;
and when the second judgment device judges that the photovoltaic power grid system is in the starting state and the first judgment device judges that the power plant power grid system continues to supply power, the photovoltaic power grid system is delayed to be closed, and meanwhile, the power plant power grid system is started.
The photovoltaic power grid system further comprises a third delay circuit, wherein the third delay circuit is coupled to the on-off device and used for receiving the on-off signal and outputting the on-off signal to the photovoltaic power grid system in a delayed manner so as to close the photovoltaic power grid system in a delayed manner.
The system further comprises a fourth delay circuit, wherein the fourth delay circuit is coupled to the starting and stopping device and used for receiving a starting and stopping signal and delaying to output the starting and stopping signal to the plant power grid system;
preferably, the delay time of the fourth delay circuit is longer than that of the third delay circuit.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, green photovoltaic electric energy and traditional electric energy are uninterruptedly switched and stably supplied to the power supply of the hydrogen production equipment, so that the traditional high energy consumption and high pollution energy consumption of the traditional solar photovoltaic water electrolysis hydrogen production are reduced, and the purposes of energy conservation, consumption reduction and emission reduction are achieved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the technical scheme that:
the method for using photovoltaic electric energy and auxiliary power in a complementary manner as a power source of hydrogen production equipment comprises the following steps:
step one, constructing a photovoltaic array, converting light energy into electric energy, and outputting the electric energy through a photovoltaic power grid system;
the scale and the power generation capacity of the photovoltaic array are designed according to the actual load of the energy consumption of the corresponding hydrogen production equipment and the energy consumption of the auxiliary production equipment;
step two, the photovoltaic power grid system and the plant power grid system are jointly connected to the input end of the automatic power circuit switching device, and the output end of the automatic power circuit switching device is electrically connected with the hydrogen production equipment and the energy storage equipment to form a complementary circuit;
the automatic switching device of the power supply circuit comprises a detection control device, a main switcher and four wiring terminals, wherein the four wiring terminals are respectively and electrically connected with the photovoltaic power grid system, the plant power grid system, the hydrogen production equipment and the energy storage equipment;
when the photovoltaic power grid system meets the requirement of the power system of the hydrogen production equipment, automatically switching the load to the photovoltaic power grid system through the automatic power circuit switching device, and directly supplying power to the hydrogen production equipment through the photovoltaic power grid system;
when the power supply voltage of the photovoltaic power grid system is lower than the requirement of a power system of the hydrogen production equipment, the load is switched by the automatic switching device of the power circuit and is directly supplied by the power plant power grid system;
when the plant power grid system directly supplies power to the hydrogen production equipment, the power circuit automatic switching device electrically connects the photovoltaic power grid system with the energy storage equipment and is used for storing electric energy into the energy storage equipment.
The green photovoltaic electric energy and the traditional electric energy are switched uninterruptedly and stably supplied to the power supply of the hydrogen production equipment, so that the traditional high energy consumption and high pollution energy consumption of the traditional solar photovoltaic water electrolysis hydrogen production are reduced, and the aims of energy conservation, consumption reduction and emission reduction are fulfilled.
In order to facilitate understanding of the technical solution of the present invention, the following examples are given for illustration.
The first embodiment is as follows:
the method for using photovoltaic electric energy and auxiliary power in a complementary manner as a power source of hydrogen production equipment comprises the following steps:
step one, constructing a photovoltaic array, converting light energy into electric energy, and outputting the electric energy through a photovoltaic power grid system;
the scale and the power generation capacity of the photovoltaic array are designed according to the actual load of the energy consumption of the corresponding hydrogen production equipment and the energy consumption of the auxiliary production equipment;
the photovoltaic array comprises a photovoltaic square matrix, a lightning protection combiner box, a direct current power distribution cabinet, a grid-connected inverter, an alternating current power distribution cabinet, an SVG reactive compensation system, a boosting system, a high-voltage protection system, a direct current system, a metering access system, a monitoring communication system, a lightning protection system, a lighting system, a fire protection system, a heating and ventilation system, a water supply and drainage system and a security system;
the photovoltaic array comprises photovoltaic multi-silicon solar cell modules arranged by adopting a photovoltaic building integration technology and polycrystalline silicon solar cell modules arranged on vacant sites, vacant sites along railways and roadbed, and the peak power of the polycrystalline silicon solar cell modules is 250 Wp;
step two, the photovoltaic power grid system and the plant power grid system are jointly connected to the input end of the automatic power circuit switching device, and the output end of the automatic power circuit switching device is electrically connected with the hydrogen production equipment and the energy storage equipment to form a complementary circuit;
the automatic switching device of the power supply circuit comprises a detection control device, a main switcher and four wiring terminals, wherein the four wiring terminals are respectively and electrically connected with the photovoltaic power grid system, the plant power grid system, the hydrogen production equipment and the energy storage equipment;
when the photovoltaic power grid system meets the requirement of the power system of the hydrogen production equipment, automatically switching the load to the photovoltaic power grid system through the automatic power circuit switching device, and directly supplying power to the hydrogen production equipment through the photovoltaic power grid system;
when the power supply voltage of the photovoltaic power grid system is lower than the requirement of a power system of the hydrogen production equipment, the load is switched by the automatic switching device of the power circuit and is directly supplied by the power plant power grid system;
when the plant power grid system directly supplies power to the hydrogen production equipment, the power circuit automatic switching device electrically connects the photovoltaic power grid system with the energy storage equipment and is used for storing electric energy into the energy storage equipment.
The detection control device also comprises a logic locking module, and a power grid fault detection module, a first photovoltaic control module and a second photovoltaic control module which are respectively connected with the logic locking module;
the power grid fault detection module is respectively connected with the photovoltaic power grid system and the plant power grid system, and is used for detecting whether the photovoltaic power grid system and the plant power grid system are in fault or not and transmitting a fault signal and a recovery signal to the logic locking module;
the first photovoltaic control module is connected with the energy storage equipment end and used for detecting the power supply stability of the energy storage equipment and calculating the connection duration of the energy storage equipment and a user load in the process that the main switcher switches the grid-connected photovoltaic power grid system to the off-grid photovoltaic power grid system;
the second photovoltaic control module is respectively connected with the photovoltaic power grid system and the plant power grid system end and is used for detecting the stability of the photovoltaic power grid system and the plant power grid system and calculating the connection duration of the photovoltaic power grid system and the plant power grid system with the user load in the process that the main switcher switches the off-grid photovoltaic power grid system to the grid-connected photovoltaic power grid system;
the logic locking module is connected with the main switcher, and controls the main switcher to complete switching between a grid-connected photovoltaic power grid system and an off-grid photovoltaic power grid system according to detection information of the power grid fault detection module, the first photovoltaic control module and the second photovoltaic control module.
The building and the photovoltaic multi-silicon solar cell module are combined by adopting a BIPV arrangement mode, so that the space occupation is reduced, and meanwhile, the photovoltaic multi-silicon solar cell module is arranged by utilizing the available extra space, so that the construction of a photovoltaic array meets the actual load of hydrogen production.
The lightning protection junction box and the photovoltaic multi-silicon solar cell module are arranged at proper positions nearby; the direct-current power distribution cabinet and the grid-connected inverter are arranged in the direct-current power distribution room; the alternating current power distribution cabinet and the SVG reactive power compensation system are arranged in the alternating current power distribution room; the boosting system is arranged in the high-pressure chamber; the high-voltage protection system, the direct-current system, the metering access system, the monitoring communication system, the lightning protection system and the lighting system are arranged in a relay protection room; the fire-fighting system, the heating and ventilation system, the water supply and drainage system and the security system are arranged in the monitoring room; the primary equipment and the mechanical equipment are installed at various appropriate positions.
The power plant power grid system usually adopts 6kV, and the connection mode of the photovoltaic power grid system and the power plant power grid system is as follows:
the system comprises a photovoltaic square matrix, a lightning protection combiner box, a direct current power distribution cabinet, a grid-connected inverter, an alternating current power distribution cabinet, a 6kV transformer boosting, a 6kV uninterrupted automatic switching system and a 6kV station power distribution system.
The switching mode of the photovoltaic power grid system and the plant power grid system is as follows:
when the photovoltaic power grid system meets the power consumption requirement of the hydrogen production equipment, the photovoltaic power is automatically switched on through a 6kV circuit breaker on the photovoltaic power side of the automatic switching device of the 6kV power circuit, the 6kV circuit breaker on the power plant power grid system side is switched off in a delayed mode, and when the 6kV circuit breaker on the photovoltaic power grid system side is normally connected to the grid, the 6kV circuit breaker on the power plant power grid system side is switched off in an unlocked mode.
Similarly, when the photovoltaic power grid system does not meet the power utilization requirement of the hydrogen production equipment, the 6kV circuit breaker on the side of the plant power grid system is automatically switched on through the 6kV power circuit automatic switching device, the 6kV circuit breaker on the side of the photovoltaic power grid system is switched off in a delayed mode, and when the 6kV circuit breaker on the side of the plant power grid system is normally connected to the grid, the 6kV circuit breaker on the side of the photovoltaic power grid system is switched off in an unlocked mode.
Through uninterrupted mutual automatic switching between the photovoltaic electric energy and the station service power of the power plant, on one hand, misoperation and labor cost input caused by human participation are reduced; on the other hand, the energy conservation, consumption reduction and emission reduction of the solar photovoltaic water electrolysis hydrogen production are realized.
Example two:
according to the method of the first embodiment, the difference is that the switching modes of the automatic switching device of the power circuit are different:
in the second step, the power supply circuit automatic switching device further comprises a first judgment device, and the plant power grid system is coupled with the first judgment device and used for detecting the power supply condition of the plant power grid system and outputting a first judgment signal;
the photovoltaic power grid system is coupled to the first judgment device, is used for receiving the first judgment signal and responds to the first judgment signal to realize uninterrupted power supply.
The first time delay circuit is coupled to the first judgment device and used for receiving the first judgment signal and responding to the first judgment signal to delay and disconnect the power grid system.
The photovoltaic power grid system is characterized by further comprising a second delay circuit, wherein the second delay circuit is arranged between the first delay circuit and the photovoltaic power grid system and used for receiving the first delay signal and responding to the first delay signal to delay disconnection of the photovoltaic power grid system.
The photovoltaic grid system further comprises a second judgment device and an opening and closing device, wherein the second judgment device is coupled to the energy storage equipment and used for detecting the output voltage of the photovoltaic grid system;
the start-stop device is coupled to the first judgment device and the second judgment device at the same time and is used for receiving the first judgment signal and the second judgment signal respectively and outputting a start-stop signal to the plant power grid system so as to start and stop the plant power grid system;
and when the second judgment device judges that the photovoltaic power grid system is in the starting state and the first judgment device judges that the power plant power grid system continues to supply power, the photovoltaic power grid system is delayed to be closed, and meanwhile, the power plant power grid system is started.
The photovoltaic power grid system further comprises a third delay circuit, wherein the third delay circuit is coupled to the starting and stopping device and used for receiving the starting and stopping signal and outputting the starting and stopping signal to the photovoltaic power grid system in a delayed mode so as to close the photovoltaic power grid system in a delayed mode.
The fourth delay circuit is coupled to the on-off device and used for receiving the on-off signal and outputting the on-off signal to the power grid system in a delayed manner;
the delay time of the fourth delay circuit is longer than that of the third delay circuit.
The output signals of the photovoltaic power grid system and the power plant power grid system are timely and accurately detected and judged, and then delayed on-off is carried out according to the signals, so that grid connection and grid disconnection are realized, and automatic and stable switching of the photovoltaic power grid system and the power plant power grid system is realized.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which includes the appended claims and their equivalents.
Claims (10)
1. The method for using photovoltaic electric energy and auxiliary power in a complementary manner as a power source of hydrogen production equipment is characterized by comprising the following steps of:
step one, constructing a photovoltaic array, converting light energy into electric energy, and outputting the electric energy through a photovoltaic power grid system;
the scale and the power generation capacity of the photovoltaic array are designed according to the actual load of the energy consumption of the corresponding hydrogen production equipment and the energy consumption of the auxiliary production equipment;
step two, the photovoltaic power grid system and the plant power grid system are jointly connected to the input end of the automatic power circuit switching device, and the output end of the automatic power circuit switching device is electrically connected with the hydrogen production equipment and the energy storage equipment to form a complementary circuit;
the automatic switching device of the power supply circuit comprises a detection control device, a main switcher and four wiring terminals, wherein the four wiring terminals are respectively and electrically connected with the photovoltaic power grid system, the plant power grid system, the hydrogen production equipment and the energy storage equipment;
when the photovoltaic power grid system meets the requirement of the power system of the hydrogen production equipment, automatically switching the load to the photovoltaic power grid system through the automatic power circuit switching device, and directly supplying power to the hydrogen production equipment through the photovoltaic power grid system;
when the power supply voltage of the photovoltaic power grid system is lower than the requirement of a power system of the hydrogen production equipment, the load is switched by the automatic switching device of the power circuit and is directly supplied by the power plant power grid system;
when the plant power grid system directly supplies power to the hydrogen production equipment, the power circuit automatic switching device electrically connects the photovoltaic power grid system with the energy storage equipment and is used for storing electric energy into the energy storage equipment.
2. The method of photovoltaic power complementary to utility power for use as a power source for hydrogen production plants according to claim 1, characterized in that:
in the first step, the photovoltaic array comprises a photovoltaic square matrix, a lightning protection combiner box, a direct current power distribution cabinet, a grid-connected inverter, an alternating current power distribution cabinet, an SVG reactive power compensation system, a boosting system, a high-voltage protection system, a direct current system, a metering access system, a monitoring communication system, a lightning protection system, a lighting system, a fire protection system, a heating and ventilation system, a water supply and drainage system and a security system.
3. The method of photovoltaic power complementary to utility power for use as a power source for hydrogen production plants according to claim 1, characterized in that:
in the first step, the photovoltaic array comprises photovoltaic multi-silicon solar cell modules arranged by adopting a photovoltaic building integration technology and polycrystalline silicon solar cell modules arranged on vacant sites, vacant places along railways and roadbed, and the peak power of the polycrystalline silicon solar cell modules is 250 Wp.
4. The method of photovoltaic power complementary to utility power for use as a power source for hydrogen production plants according to claim 1, characterized in that:
in the second step, the detection control device further comprises a logic locking module, and a power grid fault detection module, a first photovoltaic control module and a second photovoltaic control module which are respectively connected with the logic locking module;
the power grid fault detection module is respectively connected with the photovoltaic power grid system and the plant power grid system, and is used for detecting whether the photovoltaic power grid system and the plant power grid system are in fault or not and transmitting a fault signal and a recovery signal to the logic locking module;
the first photovoltaic control module is connected with the energy storage equipment end and used for detecting the power supply stability of the energy storage equipment and calculating the connection duration of the energy storage equipment and a user load in the process that the main switcher switches the grid-connected photovoltaic power grid system to the off-grid photovoltaic power grid system;
the second photovoltaic control module is respectively connected with the photovoltaic power grid system and the plant power grid system end and is used for detecting the stability of the photovoltaic power grid system and the plant power grid system and calculating the connection duration of the photovoltaic power grid system and the plant power grid system with the user load in the process that the main switcher switches the off-grid photovoltaic power grid system to the grid-connected photovoltaic power grid system;
the logic locking module is connected with the main switcher, and controls the main switcher to complete switching between a grid-connected photovoltaic power grid system and an off-grid photovoltaic power grid system according to detection information of the power grid fault detection module, the first photovoltaic control module and the second photovoltaic control module.
5. The method of photovoltaic power complementary to utility power for use as a power source for hydrogen production plants according to claim 1, characterized in that:
in the second step, the power supply circuit automatic switching device further comprises a first judgment device, and the plant power grid system is coupled with the first judgment device and used for detecting the power supply condition of the plant power grid system and outputting a first judgment signal;
the photovoltaic power grid system is coupled to the first judgment device, is used for receiving the first judgment signal and responds to the first judgment signal to realize uninterrupted power supply.
6. The method of photovoltaic power complementary to house service power for hydrogen plant power supply as claimed in claim 5, wherein:
the first time delay circuit is coupled to the first judgment device and used for receiving the first judgment signal and responding to the first judgment signal to delay and disconnect the power grid system.
7. The method of photovoltaic power complementary to house service power for hydrogen plant power supply as claimed in claim 6 wherein:
the photovoltaic power grid system is characterized by further comprising a second delay circuit, wherein the second delay circuit is arranged between the first delay circuit and the photovoltaic power grid system and used for receiving the first delay signal and responding to the first delay signal to delay disconnection of the photovoltaic power grid system.
8. The method of photovoltaic power complementary to utility power for use as a power source for hydrogen production plants according to claim 7, wherein:
the photovoltaic grid system further comprises a second judgment device and an opening and closing device, wherein the second judgment device is coupled to the energy storage equipment and used for detecting the output voltage of the photovoltaic grid system;
the start-stop device is coupled to the first judgment device and the second judgment device at the same time and is used for receiving the first judgment signal and the second judgment signal respectively and outputting a start-stop signal to the plant power grid system so as to start and stop the plant power grid system;
and when the second judgment device judges that the photovoltaic power grid system is in the starting state and the first judgment device judges that the power plant power grid system continues to supply power, the photovoltaic power grid system is delayed to be closed, and meanwhile, the power plant power grid system is started.
9. The method of photovoltaic power complementary to house service power for hydrogen plant power supply as claimed in claim 8 wherein:
the photovoltaic power grid system further comprises a third delay circuit, wherein the third delay circuit is coupled to the starting and stopping device and used for receiving the starting and stopping signal and outputting the starting and stopping signal to the photovoltaic power grid system in a delayed mode so as to close the photovoltaic power grid system in a delayed mode.
10. The method of photovoltaic power complementary to utility power for use as a power source for hydrogen production plants according to claim 9, characterized in that:
the fourth delay circuit is coupled to the on-off device and used for receiving the on-off signal and outputting the on-off signal to the power grid system in a delayed manner;
preferably, the delay time of the fourth delay circuit is longer than that of the third delay circuit.
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