WO2022242174A1 - Non-grid-connected wind power and power grid collaborative power supply system and method for producing hydrogen by water electrolysis - Google Patents

Non-grid-connected wind power and power grid collaborative power supply system and method for producing hydrogen by water electrolysis Download PDF

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Publication number
WO2022242174A1
WO2022242174A1 PCT/CN2021/141365 CN2021141365W WO2022242174A1 WO 2022242174 A1 WO2022242174 A1 WO 2022242174A1 CN 2021141365 W CN2021141365 W CN 2021141365W WO 2022242174 A1 WO2022242174 A1 WO 2022242174A1
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Prior art keywords
grid
power supply
power
module
hydrogen production
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PCT/CN2021/141365
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French (fr)
Chinese (zh)
Inventor
徐显明
王金意
张畅
任志博
王鹏杰
Original Assignee
中国华能集团清洁能源技术研究院有限公司
四川华能氢能科技有限公司
华能集团技术创新中心有限公司
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Publication of WO2022242174A1 publication Critical patent/WO2022242174A1/en

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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
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • 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
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H02J1/109—Scheduling or re-scheduling the operation of the DC sources in a particular order, e.g. connecting or disconnecting the sources in sequential, alternating or in subsets, to meet a given demand
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
    • H02M3/33584—Bidirectional converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/1552—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a biphase or polyphase arrangement
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/1555—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit
    • H02M7/1557—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit with automatic control of the output voltage or current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/162—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration
    • H02M7/1623—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration with control circuit
    • H02M7/1626—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration with control circuit with automatic control of the output voltage or current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/2173—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a biphase or polyphase circuit arrangement
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
    • 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
    • H02J2300/28—The renewable source being wind 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects
    • 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
    • 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

Definitions

  • the invention belongs to the technical field of a power supply for electrolyzing water to produce hydrogen through cooperative power supply of non-grid-connected wind power and a power grid, and specifically relates to a wind-network coordinated power supply system and a power supply method for electrolyzing water to produce hydrogen.
  • Hydrogen energy is known as the most promising new energy in the 21st century. As a green new energy, hydrogen energy has the characteristics of environmental protection, high energy density, high conversion efficiency, abundant reserves and wide application range. The high energy density of hydrogen makes many Huge amounts of energy can be generated from a small volume of hydrogen.
  • Hydrogen production by electrolysis of water is a technology with the most potential for large-scale hydrogen production, but hydrogen production by electrolysis of water consumes a lot of electricity, and hydrogen production by electrolysis of water supplied by the power grid is bound to bring overload to the safety, stability and operation scheduling of the entire power grid. .
  • the present invention aims to solve at least one of the technical problems existing in the prior art.
  • the present invention provides a wind-network coordinated power supply system and power supply method for electrolyzing water to produce hydrogen.
  • the method of using non-grid-connected wind power supply and coordinating grid power supply effectively alleviates the large power consumption of electrolyzed water hydrogen production using grid power alone. At the same time, it can effectively use wind energy to realize energy storage and energy conversion of renewable energy.
  • the present invention provides a wind-network coordinated power supply system for electrolyzing water to produce hydrogen, including a non-grid-connected wind power supply module, a grid power supply module and a PLC control module, the non-grid-connected wind power supply Both the module and the grid power supply module are connected to the power supply input end of the electrolyzed water hydrogen production load, and the PLC control module is used to control the input or removal of the grid power supply module according to the rated power of the electrolyzed water hydrogen production load and the output power of non-grid wind power.
  • the non-grid-connected wind power supply module includes a wind power generation unit and a wind power rectification conversion module, the input end of the wind power rectification conversion module is connected to the wind power generation unit, and the output end is connected to the power supply input of the electrolytic water hydrogen production load end.
  • the wind power rectification conversion module includes a first AC/DC conversion module and a DC/DC conversion module
  • the first AC/DC conversion module is composed of a three-phase bridge controlled thyristor rectifier circuit
  • the DC The /DC conversion module is an isolated bidirectional full-bridge DC-DC conversion circuit.
  • the grid power supply module includes a grid rectification conversion module, the input end of the grid rectification conversion module is connected to the power supply grid, and the output end is connected to the power supply input end of the electrolyzed water hydrogen production load.
  • the power grid rectification conversion module includes an AC transformer and a second AC/DC conversion module connected to the secondary winding of the AC transformer, and the second AC/DC conversion module is a three-phase fully-controlled rectification circuit.
  • the signal input terminal of the PLC control module is connected with a voltage feedback module and a current feedback module, and the output terminal is connected with a current given module and a voltage given module;
  • the output ends are all connected to a trigger board, and the trigger board is used to send trigger signals to the non-grid-connected wind power supply module and the grid power supply module to control the non-grid-connected wind power supply module and the grid power supply module.
  • the voltage feedback module is connected to the voltmeter at the input end of the power supply for electrolytic water hydrogen production load, and the current feedback module is connected to a shunt or a Hall current sensor at the input end of the power supply input end for electrolytic water hydrogen production load.
  • the present invention provides a power supply method for hydrogen production by electrolysis of water based on the above power supply system, wherein
  • the non-grid-connected wind power supply module supplies power to the electrolyzed water hydrogen production load, and the excess electric energy is absorbed by increasing the electrolyzed water hydrogen production load;
  • the non-grid-connected wind power supply module and the grid power supply module cooperate to supply power to the electrolyzed water hydrogen production load;
  • the present invention has at least the following beneficial technical effects:
  • the wind-network coordinated power supply system for hydrogen production by electrolysis of water uses the PLC control module to control the rectification and conversion modules of wind power and power grid, so as to realize the synergy of non-grid-connected wind power and power grid to supply power for the load of hydrogen production by electrolysis of water, effectively It alleviates the problem of large power consumption of electrolyzed water hydrogen production technology powered by grid alone, and further alleviates the negative impact of overload caused by electrolyzed water hydrogen produced by separate grid power supply on the safety, stability and operation scheduling of the entire grid, and can effectively utilize wind energy , to realize energy storage and energy conversion of renewable energy.
  • the power supply mode is adjusted in time according to the load size, and on the premise of ensuring effective power supply, non-grid-connected wind power is used as much as possible for power supply.
  • the power supply of non-grid-connected wind power is insufficient, the The combination of wind power and grid power supply for power supply can effectively utilize wind energy and realize energy storage and energy conversion of renewable energy.
  • Fig. 1 is a schematic structural diagram of a wind-network coordinated power supply system for electrolyzing water to produce hydrogen according to an embodiment of the present application;
  • Fig. 2 is a schematic diagram of the wind power rectification conversion module 3 in Fig. 1;
  • FIG. 3 is a schematic diagram of the power grid rectification conversion module 4 in FIG. 1 .
  • Wind power generation unit 2. Grid three-phase alternating current, 3. Wind power rectification conversion module, 4. Grid rectification conversion module, 5. Trigger board, 6. Current given module, 7. Voltage given module, 8. PLC control module, 9. Voltage feedback module, 10. Current feedback module, 11 Electrolyzed water hydrogen production load, 12. First AC/DC conversion module, 13. DC/DC conversion module, 14. AC transformer, 15. A second AC/DC conversion module.
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.
  • Non-grid-connected wind power combined with grid power supply to electrolyze water for hydrogen production can effectively alleviate the problem of large power consumption for electrolyzed water hydrogen production powered by grid alone.
  • Wind power generation uses electrolyzed water for hydrogen production technology to convert the electrical energy generated by wind energy into hydrogen. It can be stored, and according to actual needs, hydrogen energy can also be converted into other fuels through subsequent chemical processes.
  • the hydrogen production technology of electrolyzed water provides a shortcut for the beneficial combination of wind energy and hydrogen energy, which effectively alleviates the problem of large power consumption of the electrolyzed water hydrogen production technology of the power grid, and at the same time can effectively utilize wind energy to realize the energy storage and storage of renewable energy. energy conversion.
  • Hydrogen production from electrolyzed water with non-grid-connected wind power combined with grid power supply has a good application prospect.
  • the present application provides a wind-grid coordinated power supply system for electrolyzing water to produce hydrogen, including a wind power generator set 1, a grid three-phase alternating current 2, a wind power rectification conversion module 3, a grid rectification conversion module 4, and a trigger board 5 , a given current module 6 , a given voltage module 7 , a PLC control module 8 , a voltage feedback module 9 , a current feedback module 10 and a load 11 for hydrogen production from electrolyzed water.
  • the non-grid-connected wind power supply and the grid-powered alternating current are rectified and converted to output direct current to supply power for the hydrogen production load of electrolyzed water.
  • the non-grid-connected wind power supply includes wind power generation unit 1 and wind power rectification conversion module 3, and the alternating current generated by wind power generation unit 1 passes through the wind power
  • the rectification conversion module 3 becomes direct current power supply to the electrolytic water hydrogen production load 11;
  • the grid power supply includes the grid three-phase alternating current 2 and the grid rectification conversion module 4, and the grid three-phase alternating current 2 is transformed into direct current by the grid rectification conversion module 4 to supply the electrolytic water system Hydrogen loading11.
  • the conversion circuits of the wind power rectification conversion module 3 and the power grid rectification conversion module 4 are mainly controlled by a trigger pulse signal.
  • the trigger pulse signal is a voltage or current pulse signal sent by the trigger board 5 .
  • the PLC control module is used to control the non-grid-connected wind power and the grid rectification conversion module, so as to realize the synergy of non-grid-connected wind power and power grid for hydrogen production by electrolysis of water The method of supplying power to the load.
  • the non-grid-connected wind power When the output power of non-grid-connected wind power is greater than 95% of the rated working power of the electrolyzed water hydrogen production load and less than 105% of the rated working power of the electrolyzed water hydrogen production load, the non-grid-connected wind power alone supplies power to the electrolyzed water hydrogen production load, Ensure the normal operation of electrolyzed water hydrogen production load.
  • the non-grid-connected wind power When the output power of non-grid-connected wind power is greater than 105% of the rated working power of the electrolyzed water hydrogen production load, the non-grid-connected wind power alone supplies power to the electrolyzed water hydrogen production load, and the excess electric energy can be generated by increasing the electrolyzed water hydrogen production load 11 Consumptive.
  • the non-grid-connected wind power and the grid cooperate to supply power to the electrolyzed water hydrogen production load to ensure the normal operation of the electrolyzed water hydrogen production load.
  • the non-grid-connected wind power stops supplying power at this time, and the grid serves as the power supply to supply the electrolyzed water hydrogen production load to ensure the normal operation of the electrolyzed water hydrogen production load.
  • the wind power rectification conversion module 3 and the power grid rectification conversion module 4 are the key conversion circuits for electrolyzing water to produce hydrogen for power supply.
  • the schematic diagram of the wind power rectification conversion module 3 is shown in FIG. 2 .
  • the wind power rectification conversion module 3 is composed of a first AC/DC conversion module 12 and a DC/DC conversion module 13, and the first AC/DC conversion module 12 and the DC/DC conversion module 13 start working mainly by triggering board 5 to send voltage pulses The signal triggers and controls the first AC/DC conversion module 12 and the DC/DC conversion module 13 .
  • the first AC/DC conversion module 12 is mainly composed of a voltage-type three-phase bridge rectifier circuit.
  • the circuit includes six insulated gate bipolar transistors IGBTs. At any time, two IGBTs must be turned on at the same time to form a current loop, and One of the triodes is a common cathode group, and the other triode is a common anode group.
  • the circuit is characterized by the use of high-frequency PWM rectification technology.
  • the IGBT device is in a high-frequency switching state, and the on and off states of the IGBT device can be controlled.
  • the trigger board 5 sends a voltage pulse signal to control the opening and closing moments of the six IGBT transistors of the first AC/DC conversion module 12 to achieve the purpose of converting the input AC power to the output DC power .
  • the DC/DC conversion module 13 is mainly composed of an isolated bidirectional full-bridge DC-DC conversion circuit.
  • the four IGBT transistors Q1, Q2, Q3, and Q4 in the DC/DC conversion module 13 form an H bridge connected to the primary side.
  • the four IGBT transistors Q5, Q6, Q7, and Q8 in the DC conversion module 13 form an H-bridge connected to the secondary side, and the H-bridge connected to the primary side and the H-bridge connected to the secondary side pass through a high-speed circuit with a transformation ratio of n:1. frequency transformer TR for connection.
  • the trigger board 5 sends a voltage pulse signal to control the turn-on and turn-off timing of the four IGBT transistors on the primary side and the secondary side to achieve the rated low voltage and high current DC power supply to the electrolyzed water hydrogen production load 11 .
  • FIG. 3 A schematic diagram of the grid rectification transformation module 4 is shown in FIG. 3 .
  • the power grid rectification conversion module 4 is composed of an AC transformer 14 and a second AC/DC conversion module 15.
  • the second AC/DC rectification conversion module 15 is composed of a three-phase fully-controlled rectifier circuit, and the three-phase fully-controlled rectifier circuit includes six A controllable thyristor, at any time must ensure that two thyristors are turned on at the same time to form a current loop, and one of the thyristors is a common cathode group, and the other thyristor is a common anode group.
  • the trigger board 5 sends a voltage pulse signal to control the opening and closing time of the six thyristors of the three-phase fully-controlled rectification circuit, and the three-phase alternating current 2 of the grid is stepped down by the AC transformer 14 to convert the high-voltage three-phase alternating current of the grid into a lower voltage Adjust the trigger pulse of the second AC/DC rectification conversion module 15, the low-voltage three-phase alternating current reaches the rated low voltage and high current direct current after the second AC/DC rectification and transformation, and supplies power to the electrolyzed water hydrogen production load 11.
  • the PLC control module is the key control input module.
  • the PLC control module 8 receives the voltage and current feedback signals from the voltage feedback module 9 and the current feedback module 10, and after internal calculation and comparison, outputs the corresponding current given 6 and voltage given 7 pulse signals, and through the trigger board 5 to the wind power
  • the rectification conversion module 3 and the grid rectification conversion module 4 perform trigger control.
  • the voltage and current signals of the voltage feedback module 9 and the current feedback module 10 are respectively the measured voltage and the measured current signal of the power supply input end of the electrolyzed water hydrogen production load 11, the measured voltage signal can be obtained by an ordinary voltmeter, and the measured current signal can be obtained by shunting It can also be obtained by Hall current sensor.
  • the wind-network coordinated power supply system for hydrogen production by electrolysis uses PLC control module to control non-grid-connected wind power and grid rectification module, so as to realize the synergy of non-grid-connected wind power and power grid for electrolyzed water hydrogen production load power supply
  • the method can well alleviate the problem of large power consumption for hydrogen production by electrolysis of water in a separate power grid, and at the same time can effectively utilize wind energy to realize energy storage and energy conversion of renewable energy.
  • the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch.
  • “above”, “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
  • “Below”, “beneath” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

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Abstract

Disclosed in the present invention are a non-grid-connected wind power and power grid collaborative power supply system and method for producing hydrogen by water electrolysis. A non-grid-connected wind power and power grid rectification conversion module is controlled to realize a method for cooperatively supplying, by means of non-grid-connected wind power and a power grid, power to a load for producing hydrogen by water electrolysis. When an output power of the non-grid-connected wind power is within the range of ±5% of a rated operating power of the load for producing hydrogen by water electrolysis, power is individually supplied, by the non-grid-connected wind power, to the load for producing hydrogen by water electrolysis, thereby ensuring normal operation of the load for producing hydrogen by water electrolysis. When the output power of the non-grid-connected wind power is greater than 105% of the rated operating power of the load for producing hydrogen by water electrolysis, power is individually supplied, by the non-grid-connected wind power, to the load for producing hydrogen by water electrolysis, and the excess electric energy can be consumed by means of increasing a load 11 for producing hydrogen by water electrolysis; and when the output power of the non-grid-connected wind power is less than 95% of the rated operating power of the load for producing hydrogen by water electrolysis, power is cooperatively supplied, by the non-grid-connected wind power and the power grid, to the load for producing hydrogen by water electrolysis, thereby ensuring normal operation of the load for producing hydrogen by water electrolysis.

Description

用于电解水制氢的风网协同供电***及供电方法Wind-network coordinated power supply system and power supply method for hydrogen production by electrolysis of water
相关申请的交叉引用Cross References to Related Applications
本申请基于申请号为2021105541634、申请日为2021年5月20日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。This application is based on a Chinese patent application with application number 2021105541634 and a filing date of May 20, 2021, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.
技术领域technical field
本发明属于非并网风电和电网协同供电电解水制氢的电源技术领域，具体涉及一种用于电解水制氢的风网协同供电***及供电方法。The invention belongs to the technical field of a power supply for electrolyzing water to produce hydrogen through cooperative power supply of non-grid-connected wind power and a power grid, and specifically relates to a wind-network coordinated power supply system and a power supply method for electrolyzing water to produce hydrogen.
背景技术Background technique
随着经济的迅速发展，对能源的需求日益旺盛，能源短缺以及化石能源所产生的环境污染问题日益尖锐。新能源资源潜力大，可持续利用，在满足能源需求、改善能源结构、减少环境污染、促进经济发展等方面发挥了重要作用，在能源安全和环境保护的双重压力下，太阳能、风能、氢能、核能、化学电源、生物质能及地热能、海洋能新能源等引起了国际社会的广泛关注。With the rapid development of the economy, the demand for energy is increasingly strong, and the problems of energy shortage and environmental pollution caused by fossil energy are becoming increasingly acute. New energy resources have great potential and can be used sustainably. They have played an important role in meeting energy demand, improving energy structure, reducing environmental pollution, and promoting economic development. Under the dual pressure of energy security and environmental protection, solar energy, wind energy, hydrogen energy , nuclear energy, chemical power sources, biomass energy and geothermal energy, ocean energy and new energy have attracted widespread attention from the international community.
氢能被誉为21世纪最具有发展前景的新能源，氢能作为绿色的新能源，具有环保、能量密度大、转换效率高、储量丰富和适用范围广等特点，氢的高能量密度使很小体积的氢便可产生巨大的能量。Hydrogen energy is known as the most promising new energy in the 21st century. As a green new energy, hydrogen energy has the characteristics of environmental protection, high energy density, high conversion efficiency, abundant reserves and wide application range. The high energy density of hydrogen makes many Huge amounts of energy can be generated from a small volume of hydrogen.
现有制氢技术主要包括化石燃料制氢(煤、石油、天然气)、电解水制氢和生物质制氢。目前，制氢产业以煤化工制氢为主要途径。但采用煤化工制氢存在耗水量大、二氧化碳排放量大等问题，与发展绿色能源的目标背道而驰。除化石燃料制氢技术外，电解水制氢是目前发展较成熟且应用较广泛的一种技术。电解水制氢工艺简单、污染低、制氢纯度高，是一种高效、清洁的制氢技术。电解水制氢是最具有潜力大规模制氢的一种技术，但电解水制氢耗电量大，电网供电电解水制氢势必给整个电网的安全稳定和运行调度带来超负荷的不良影响。Existing hydrogen production technologies mainly include hydrogen production from fossil fuels (coal, oil, natural gas), hydrogen production from electrolyzed water, and hydrogen production from biomass. At present, the hydrogen production industry mainly uses coal chemical hydrogen production as the main way. However, the use of coal chemical industry to produce hydrogen has problems such as large water consumption and large carbon dioxide emissions, which runs counter to the goal of developing green energy. In addition to fossil fuel hydrogen production technology, hydrogen production by electrolysis of water is a relatively mature and widely used technology. Electrolyzed water hydrogen production process is simple, low pollution, high purity hydrogen production, is an efficient and clean hydrogen production technology. Hydrogen production by electrolysis of water is a technology with the most potential for large-scale hydrogen production, but hydrogen production by electrolysis of water consumes a lot of electricity, and hydrogen production by electrolysis of water supplied by the power grid is bound to bring overload to the safety, stability and operation scheduling of the entire power grid. .
电解水制氢耗电量大的问题必须找到更好的供电***来替代和缓解才能解决。风能作为一种新能源具有很好的发展前景，但风电具有典型的随机性和间歇性，大规模风电并网对电网的安全稳定有很大的不良影响，这也成为制约风电规模化发展的严重障碍。The problem of high power consumption for hydrogen production from electrolyzed water can only be solved by finding a better power supply system to replace and alleviate it. As a new energy source, wind energy has good development prospects, but wind power is typically random and intermittent, and large-scale wind power grid integration has a great negative impact on the security and stability of the grid, which has also become a constraint for the large-scale development of wind power. serious handicap.
因此，仍然需要为电解水制氢寻找一种稳定、有效、节能且环保的供电***。Therefore, it is still necessary to find a stable, effective, energy-saving and environment-friendly power supply system for hydrogen production by electrolysis of water.
发明内容Contents of the invention
本发明旨在至少解决现有技术中存在的技术问题之一。The present invention aims to solve at least one of the technical problems existing in the prior art.
本发明提供了一种用于电解水制氢的风网协同供电***及供电方法，利用非并网风电供电协同电网供电的方式，有效的缓解了单独利用电网供电电解水制氢耗电量大的问题，同时 能够有效的利用风能，实现可再生能源的能量储备和能源转换。The present invention provides a wind-network coordinated power supply system and power supply method for electrolyzing water to produce hydrogen. The method of using non-grid-connected wind power supply and coordinating grid power supply effectively alleviates the large power consumption of electrolyzed water hydrogen production using grid power alone. At the same time, it can effectively use wind energy to realize energy storage and energy conversion of renewable energy.
为达到上述目的，一方面，本发明提供了一种用于电解水制氢的风网协同供电***，包括非并网风电供电模块、电网供电模块和PLC控制模块，所述非并网风电供电模块和电网供电模块均连接至电解水制氢负载的供电电源输入端，所述PLC控制模块用于根据电解水制氢负载的额定功率和非并网风电输出功率控制电网供电模块投入或切除。In order to achieve the above object, on the one hand, the present invention provides a wind-network coordinated power supply system for electrolyzing water to produce hydrogen, including a non-grid-connected wind power supply module, a grid power supply module and a PLC control module, the non-grid-connected wind power supply Both the module and the grid power supply module are connected to the power supply input end of the electrolyzed water hydrogen production load, and the PLC control module is used to control the input or removal of the grid power supply module according to the rated power of the electrolyzed water hydrogen production load and the output power of non-grid wind power.
在一种实施方式中，非并网风电供电模块包括风力发电机组和风电整流变换模块，所述风电整流变换模块输入端与风力发电机组连接，输出端连接至电解水制氢负载的供电电源输入端。In one embodiment, the non-grid-connected wind power supply module includes a wind power generation unit and a wind power rectification conversion module, the input end of the wind power rectification conversion module is connected to the wind power generation unit, and the output end is connected to the power supply input of the electrolytic water hydrogen production load end.
在一种实施方式中，风电整流变换模块包括第一AC/DC转换模块和DC/DC转换模块，所述第一AC/DC转换模块由三相桥式可控晶闸管整流电路组成，所述DC/DC转换模块为隔离型双向全桥DC-DC变换电路。In one embodiment, the wind power rectification conversion module includes a first AC/DC conversion module and a DC/DC conversion module, the first AC/DC conversion module is composed of a three-phase bridge controlled thyristor rectifier circuit, and the DC The /DC conversion module is an isolated bidirectional full-bridge DC-DC conversion circuit.
在一种实施方式中，电网供电模块包括电网整流变换模块，所述电网整流变换模块输入端与供电电网连接，输出端连接至电解水制氢负载的供电电源输入端。In one embodiment, the grid power supply module includes a grid rectification conversion module, the input end of the grid rectification conversion module is connected to the power supply grid, and the output end is connected to the power supply input end of the electrolyzed water hydrogen production load.
在一种实施方式中，电网整流变换模块包括交流变压器和连接在交流变压器副边绕组的第二AC/DC转换模块，所述第二AC/DC转换模块为三相全控整流电路。In one embodiment, the power grid rectification conversion module includes an AC transformer and a second AC/DC conversion module connected to the secondary winding of the AC transformer, and the second AC/DC conversion module is a three-phase fully-controlled rectification circuit.
在一种实施方式中，PLC控制模块的信号输入端连接有电压反馈模块和电流反馈模块，输出端连接有电流给定模块和电压给定模块；所述电流给定模块和电压给定模块的输出端均与触发板连接，所述触发板用于向非并网风电供电模块、电网供电模块发送触发信号，以对非并网风电供电模块、电网供电模块进行控制。In one embodiment, the signal input terminal of the PLC control module is connected with a voltage feedback module and a current feedback module, and the output terminal is connected with a current given module and a voltage given module; The output ends are all connected to a trigger board, and the trigger board is used to send trigger signals to the non-grid-connected wind power supply module and the grid power supply module to control the non-grid-connected wind power supply module and the grid power supply module.
在一种实施方式中，电压反馈模块和电解水制氢负载供电电源输入端的电压表连接，所述电流反馈模块和电解水制氢负载供电电源输入端的分流器或霍尔电流传感器连接。In one embodiment, the voltage feedback module is connected to the voltmeter at the input end of the power supply for electrolytic water hydrogen production load, and the current feedback module is connected to a shunt or a Hall current sensor at the input end of the power supply input end for electrolytic water hydrogen production load.
另一方面，本发明提供了一种基于上述的供电***的电解水制氢供电方法，其中On the other hand, the present invention provides a power supply method for hydrogen production by electrolysis of water based on the above power supply system, wherein
当非并网风电输出功率在95％P N～105％P N范围内时，仅由非并网风电供电模块给电解水制氢负载供电，P N为电解水制氢负载的额定工作功率； When the non-grid-connected wind power output power is within the range of 95% P N ~ 105% P N , only the non-grid-connected wind power supply module supplies power to the electrolyzed water hydrogen production load, and P N is the rated working power of the electrolyzed water hydrogen production load;
当非并网风电输出功率＞105％P N时，仅由非并网风电供电模块给电解水制氢负载供电，多余的电能通过增加电解水制氢负载进行消纳； When the non-grid-connected wind power output power is >105% PN , only the non-grid-connected wind power supply module supplies power to the electrolyzed water hydrogen production load, and the excess electric energy is absorbed by increasing the electrolyzed water hydrogen production load;
当非并网风电输出功率＜95％P N时，由非并网风电供电模块和电网供电模块协同给电解水制氢负载供电； When the non-grid-connected wind power output power is less than 95% P N , the non-grid-connected wind power supply module and the grid power supply module cooperate to supply power to the electrolyzed water hydrogen production load;
当非并网风电输出功率＝0时，仅电网供电模块给电解水制氢负载供电。When the output power of non-grid-connected wind power = 0, only the grid power supply module supplies power to the electrolyzed water hydrogen production load.
与现有技术相比，本发明至少具有以下有益的技术效果：Compared with the prior art, the present invention has at least the following beneficial technical effects:
根据本申请实施方案的用于电解水制氢的风网协同供电***利用PLC控制模块对风电和电网整流变换模块进行控制，实现非并网风电和电网协同为电解水制氢负载供电，有效的缓解了电网单独供电电解水制氢技术耗电量大的问题，进一步缓解了单独电网供电电解水制氢给整个电网的安全稳定和运行调度带来超负荷的不良影响，同时能够有效的利用风能，实现可再生能源的能量储备和能源转换。According to the embodiment of the application, the wind-network coordinated power supply system for hydrogen production by electrolysis of water uses the PLC control module to control the rectification and conversion modules of wind power and power grid, so as to realize the synergy of non-grid-connected wind power and power grid to supply power for the load of hydrogen production by electrolysis of water, effectively It alleviates the problem of large power consumption of electrolyzed water hydrogen production technology powered by grid alone, and further alleviates the negative impact of overload caused by electrolyzed water hydrogen produced by separate grid power supply on the safety, stability and operation scheduling of the entire grid, and can effectively utilize wind energy , to realize energy storage and energy conversion of renewable energy.
根据本申请实施方案的电解水制氢供电方法，根据负载大小，及时调整供电方式，在保 证有效供电的前提下，尽量用非并网风电进行供电，当非并网风电供电量不足时，采用风电和电网供电配合的方式进行供电，能够有效的利用风能，实现可再生能源的能量储备和能源转换。According to the power supply method for hydrogen production from electrolyzed water in the embodiment of the application, the power supply mode is adjusted in time according to the load size, and on the premise of ensuring effective power supply, non-grid-connected wind power is used as much as possible for power supply. When the power supply of non-grid-connected wind power is insufficient, the The combination of wind power and grid power supply for power supply can effectively utilize wind energy and realize energy storage and energy conversion of renewable energy.
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
附图说明Description of drawings
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:
图1是根据本申请的实施方案的一种用于电解水制氢的风网协同供电***的原理结构图；Fig. 1 is a schematic structural diagram of a wind-network coordinated power supply system for electrolyzing water to produce hydrogen according to an embodiment of the present application;
图2是图1中风电整流变换模块3的原理图；Fig. 2 is a schematic diagram of the wind power rectification conversion module 3 in Fig. 1;
图3是图1中电网整流变换模块4的原理图。FIG. 3 is a schematic diagram of the power grid rectification conversion module 4 in FIG. 1 .
附图中：1、风力发电机组，2、电网三相交流电，3、风电整流变换模块，4、电网整流变换模块，5、触发板，6、电流给定模块，7、电压给定模块，8、PLC控制模块，9、电压反馈模块，10、电流反馈模块，11电解水制氢负载，12、第一AC/DC转换模块，13、DC/DC转换模块，14、交流变压器，15、第二AC/DC转换模块。In the attached drawings: 1. Wind power generation unit, 2. Grid three-phase alternating current, 3. Wind power rectification conversion module, 4. Grid rectification conversion module, 5. Trigger board, 6. Current given module, 7. Voltage given module, 8. PLC control module, 9. Voltage feedback module, 10. Current feedback module, 11 Electrolyzed water hydrogen production load, 12. First AC/DC conversion module, 13. DC/DC conversion module, 14. AC transformer, 15. A second AC/DC conversion module.
具体实施方式Detailed ways
为了使本发明的目的和技术方案更加清晰和便于理解。以下结合附图和实施例，对本发明进行进一步的详细说明，此处所描述的具体实施例仅用于解释本发明，并非用于限定本发明。In order to make the purpose and technical solution of the present invention clearer and easier to understand. The present invention will be further described in detail below in conjunction with the drawings and embodiments. The specific embodiments described here are only used to explain the present invention, not to limit the present invention.
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.
发明人发现，非并网风电协同电网供电电解水制氢能有效的缓解单独电网供电电解水制氢耗电量大的问题，风力发电经过电解水制氢技术，将风能产生的电能转化为氢能进行储存，根据实际需要，还可以通过后续化工过程将氢能转化为其它的燃料。电解水制氢技术为风能和氢能的有利结合提供了一条捷径，有效的缓解了电网电解水制氢技术耗电量大的问题，同时能够有效的利用风能，实现可再生能源的能量储备和能源转换。非并网风电协同电网供电电解水制氢具有良好的应用前景。The inventors found that non-grid-connected wind power combined with grid power supply to electrolyze water for hydrogen production can effectively alleviate the problem of large power consumption for electrolyzed water hydrogen production powered by grid alone. Wind power generation uses electrolyzed water for hydrogen production technology to convert the electrical energy generated by wind energy into hydrogen. It can be stored, and according to actual needs, hydrogen energy can also be converted into other fuels through subsequent chemical processes. The hydrogen production technology of electrolyzed water provides a shortcut for the beneficial combination of wind energy and hydrogen energy, which effectively alleviates the problem of large power consumption of the electrolyzed water hydrogen production technology of the power grid, and at the same time can effectively utilize wind energy to realize the energy storage and storage of renewable energy. energy conversion. Hydrogen production from electrolyzed water with non-grid-connected wind power combined with grid power supply has a good application prospect.
参照图1，本申请提供了一种用于电解水制氢的风网协同供电***，包括风力发电机组1、电网三相交流电2、风电整流变换模块3、电网整流变换模块4、触发板5、电流给定模块6、电压给定模块7、PLC控制模块8、电压反馈模块9、电流反馈模块10和电解水制氢负载11。Referring to Fig. 1, the present application provides a wind-grid coordinated power supply system for electrolyzing water to produce hydrogen, including a wind power generator set 1, a grid three-phase alternating current 2, a wind power rectification conversion module 3, a grid rectification conversion module 4, and a trigger board 5 , a given current module 6 , a given voltage module 7 , a PLC control module 8 , a voltage feedback module 9 , a current feedback module 10 and a load 11 for hydrogen production from electrolyzed water.
非并网风电供电和电网供电的交流电经过整流变换后输出直流电为电解水制氢负载供电，非并网风电供电包括风力发电机组1和风电整流变换模块3，风力发电机组1发出的交流电经过风电整流变换模块3变成直流电供电给电解水制氢负载11；电网供电包括电网三相交流电2和电网整流变换模块4，电网三相交流电2经过电网整流变换模块4变换成直流电供电给电解水制氢负载11。风电整流变换模块3和电网整流变换模块4的转换电路开始工作主要靠触发脉冲信号来控制，触发脉冲信号是触发板5发出电压或者电流脉冲信号。The non-grid-connected wind power supply and the grid-powered alternating current are rectified and converted to output direct current to supply power for the hydrogen production load of electrolyzed water. The non-grid-connected wind power supply includes wind power generation unit 1 and wind power rectification conversion module 3, and the alternating current generated by wind power generation unit 1 passes through the wind power The rectification conversion module 3 becomes direct current power supply to the electrolytic water hydrogen production load 11; the grid power supply includes the grid three-phase alternating current 2 and the grid rectification conversion module 4, and the grid three-phase alternating current 2 is transformed into direct current by the grid rectification conversion module 4 to supply the electrolytic water system Hydrogen loading11. The conversion circuits of the wind power rectification conversion module 3 and the power grid rectification conversion module 4 are mainly controlled by a trigger pulse signal. The trigger pulse signal is a voltage or current pulse signal sent by the trigger board 5 .
根据本申请实施方案的用于电解水制氢的风网协同供电***统，利用PLC控制模块对非并网风电和电网整流变换模块进行控制，实现非并网风电和电网协同为电解水制氢负载供电的方法。According to the wind-network coordinated power supply system for hydrogen production by electrolysis of water according to the embodiment of the application, the PLC control module is used to control the non-grid-connected wind power and the grid rectification conversion module, so as to realize the synergy of non-grid-connected wind power and power grid for hydrogen production by electrolysis of water The method of supplying power to the load.
当非并网风电输出功率大于电解水制氢负载的额定工作功率的95％且小于电解水制氢负载的额定工作功率的105％时，单独由非并网风电给电解水制氢负载供电，保证电解水制氢负载的正常工作。When the output power of non-grid-connected wind power is greater than 95% of the rated working power of the electrolyzed water hydrogen production load and less than 105% of the rated working power of the electrolyzed water hydrogen production load, the non-grid-connected wind power alone supplies power to the electrolyzed water hydrogen production load, Ensure the normal operation of electrolyzed water hydrogen production load.
当非并网风电输出功率大于电解水制氢负载的额定工作功率的105％时，单独由非并网风电给电解水制氢负载供电，多余部分的电能可以通过增加电解水制氢负载11进行消纳。When the output power of non-grid-connected wind power is greater than 105% of the rated working power of the electrolyzed water hydrogen production load, the non-grid-connected wind power alone supplies power to the electrolyzed water hydrogen production load, and the excess electric energy can be generated by increasing the electrolyzed water hydrogen production load 11 Consumptive.
当非并网风电输出功率小于电解水制氢负载额定工作功率的95％时，由非并网风电和电网协同给电解水制氢负载供电，保证电解水制氢负载的正常工作。When the output power of non-grid-connected wind power is less than 95% of the rated working power of the electrolyzed water hydrogen production load, the non-grid-connected wind power and the grid cooperate to supply power to the electrolyzed water hydrogen production load to ensure the normal operation of the electrolyzed water hydrogen production load.
当非并网风电输出功率为零时，此时非并网风电停止供电，电网作为供电电源给电解水制氢负载供电，保证电解水制氢负载的正常工作。When the output power of the non-grid-connected wind power is zero, the non-grid-connected wind power stops supplying power at this time, and the grid serves as the power supply to supply the electrolyzed water hydrogen production load to ensure the normal operation of the electrolyzed water hydrogen production load.
在上述过程中，风电整流变换模块3和电网整流变换模块4是电解水制氢供电的关键转换电路，风电整流变换模块3的原理图如图2所示。In the above process, the wind power rectification conversion module 3 and the power grid rectification conversion module 4 are the key conversion circuits for electrolyzing water to produce hydrogen for power supply. The schematic diagram of the wind power rectification conversion module 3 is shown in FIG. 2 .
所述风电整流变换模块3由第一AC/DC转换模块12和DC/DC转换模块13组成，第一AC/DC转换模块12和DC/DC转换模块13开始工作主要靠触发板5发出电压脉冲信号对第一AC/DC转换模块12和DC/DC转换模块13进行触发和控制。The wind power rectification conversion module 3 is composed of a first AC/DC conversion module 12 and a DC/DC conversion module 13, and the first AC/DC conversion module 12 and the DC/DC conversion module 13 start working mainly by triggering board 5 to send voltage pulses The signal triggers and controls the first AC/DC conversion module 12 and the DC/DC conversion module 13 .
第一AC/DC转换模块12主要是电压型三相桥式整流电路组成，电路中包含六个绝缘栅双极型三极管IGBT，任何时刻必须保证有两个IGBT同时导通才能构成电流回路，且其中一个三极管是共阴极组的，另一个三极管是共阳极组的，该电路的特点是采用高频PWM整 流技术，IGBT器件处于高频开关状态，IGBT器件的开通和关断状态是可以控制的，因而整流器的电流波形是可控的，触发板5发出电压脉冲信号对第一AC/DC转换模块12的六个IGBT三极管进行开通和关断时刻的控制来达到输入交流电到输出直流电的转换目的。The first AC/DC conversion module 12 is mainly composed of a voltage-type three-phase bridge rectifier circuit. The circuit includes six insulated gate bipolar transistors IGBTs. At any time, two IGBTs must be turned on at the same time to form a current loop, and One of the triodes is a common cathode group, and the other triode is a common anode group. The circuit is characterized by the use of high-frequency PWM rectification technology. The IGBT device is in a high-frequency switching state, and the on and off states of the IGBT device can be controlled. , so the current waveform of the rectifier is controllable, and the trigger board 5 sends a voltage pulse signal to control the opening and closing moments of the six IGBT transistors of the first AC/DC conversion module 12 to achieve the purpose of converting the input AC power to the output DC power .
DC/DC转换模块13主要是隔离型双向全桥DC-DC变换电路组成，DC/DC转换模块13中的四个IGBT三极管Q1，Q2，Q3，Q4构成原边侧连接的H桥，DC/DC转换模块13中的四个IGBT三极管Q5，Q6，Q7，Q8构成副边侧连接的H桥，原边侧连接的H桥与副边侧连接的H桥通过变比为n:1的高频变压器TR进行连接。触发板5发出电压脉冲信号对原副边的四个IGBT三极管进行开通和关断时刻的控制以达到额定的低电压和大电流的直流电供电给电解水制氢负载11目的。The DC/DC conversion module 13 is mainly composed of an isolated bidirectional full-bridge DC-DC conversion circuit. The four IGBT transistors Q1, Q2, Q3, and Q4 in the DC/DC conversion module 13 form an H bridge connected to the primary side. The four IGBT transistors Q5, Q6, Q7, and Q8 in the DC conversion module 13 form an H-bridge connected to the secondary side, and the H-bridge connected to the primary side and the H-bridge connected to the secondary side pass through a high-speed circuit with a transformation ratio of n:1. frequency transformer TR for connection. The trigger board 5 sends a voltage pulse signal to control the turn-on and turn-off timing of the four IGBT transistors on the primary side and the secondary side to achieve the rated low voltage and high current DC power supply to the electrolyzed water hydrogen production load 11 .
电网整流变换模块4的原理图如图3所示。A schematic diagram of the grid rectification transformation module 4 is shown in FIG. 3 .
所述电网整流变换模块4由交流变压器14和第二AC/DC转换模块15组成，第二AC/DC整流转换模块15是由三相全控整流电路组成，三相全控整流电路中包含六个可控晶闸管，任何时刻必须保证有两个晶闸管同时导通才能构成电流回路，且其中一个晶闸管是共阴极组的，另一个晶闸管是共阳极组的。触发板5发出电压脉冲信号对三相全控整流电路的六个晶闸管进行开通和关断时刻的控制，电网三相交流电2经过交流变压器14降压后把电网高压三相交流电变成较低压的三相交流电；调节第二AC/DC整流转换模块15的触发脉冲，低压的三相交流电经过第二AC/DC整流变换后达到额定的低电压和大电流的直流电供电给电解水制氢负载11。The power grid rectification conversion module 4 is composed of an AC transformer 14 and a second AC/DC conversion module 15. The second AC/DC rectification conversion module 15 is composed of a three-phase fully-controlled rectifier circuit, and the three-phase fully-controlled rectifier circuit includes six A controllable thyristor, at any time must ensure that two thyristors are turned on at the same time to form a current loop, and one of the thyristors is a common cathode group, and the other thyristor is a common anode group. The trigger board 5 sends a voltage pulse signal to control the opening and closing time of the six thyristors of the three-phase fully-controlled rectification circuit, and the three-phase alternating current 2 of the grid is stepped down by the AC transformer 14 to convert the high-voltage three-phase alternating current of the grid into a lower voltage Adjust the trigger pulse of the second AC/DC rectification conversion module 15, the low-voltage three-phase alternating current reaches the rated low voltage and high current direct current after the second AC/DC rectification and transformation, and supplies power to the electrolyzed water hydrogen production load 11.
根据本申请实施方案的用于电解水制氢的风网协同供电***，除了风电整流变换模块3和电网整流变换模块4是电解水制氢供电的关键转换电路，PLC控制模块是关键的控制输入模块。According to the wind-network coordinated power supply system for hydrogen production by electrolysis of water according to the embodiment of the present application, except that the wind power rectification conversion module 3 and the grid rectification conversion module 4 are the key conversion circuits for hydrogen production by electrolysis of water, the PLC control module is the key control input module.
PLC控制模块8通过接收电压反馈模块9和电流反馈模块10的电压电流反馈信号，经过内部计算和比较后，输出对应的电流给定6和电压给定7脉冲信号，并通过触发板5对风电整流变换模块3和电网整流变换模块4进行触发控制。电压反馈模块9和电流反馈模块10的电压和电流信号分别是电解水制氢负载11的供电电源输入端的测量电压和测量电流信号，测量电压信号可以通过普通电压表获得，测量电流信号可以通过分流器测量获得，也可以通过霍尔电流传感器获得。The PLC control module 8 receives the voltage and current feedback signals from the voltage feedback module 9 and the current feedback module 10, and after internal calculation and comparison, outputs the corresponding current given 6 and voltage given 7 pulse signals, and through the trigger board 5 to the wind power The rectification conversion module 3 and the grid rectification conversion module 4 perform trigger control. The voltage and current signals of the voltage feedback module 9 and the current feedback module 10 are respectively the measured voltage and the measured current signal of the power supply input end of the electrolyzed water hydrogen production load 11, the measured voltage signal can be obtained by an ordinary voltmeter, and the measured current signal can be obtained by shunting It can also be obtained by Hall current sensor.
根据本申请实施方案的用于电解水制氢的风网协同供电***利用PLC控制模块对非并网风电和电网整流模块进行控制，实现非并网风电和电网协同为电解水制氢负载供电的方法，能够很好的缓解单独电网电解水制氢耗电量大的问题，同时能够有效的利用风能，实现可再生能源的能量储备和能源转换。According to the embodiment of the application, the wind-network coordinated power supply system for hydrogen production by electrolysis uses PLC control module to control non-grid-connected wind power and grid rectification module, so as to realize the synergy of non-grid-connected wind power and power grid for electrolyzed water hydrogen production load power supply The method can well alleviate the problem of large power consumption for hydrogen production by electrolysis of water in a separate power grid, and at the same time can effectively utilize wind energy to realize energy storage and energy conversion of renewable energy.
以上内容仅为说明本发明的技术思想，不能以此限定本发明的保护范围，凡是按照本发明提出的技术思想，在技术方案基础上所做的任何改动，均落入本发明权利要求书的保护范围之内。The above content is only to illustrate the technical ideas of the present invention, and cannot limit the protection scope of the present invention. Any changes made on the basis of the technical solutions according to the technical ideas proposed in the present invention shall fall within the scope of the claims of the present invention. within the scope of protection.
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一 特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (8)

  1. 一种用于电解水制氢的风网协同供电***，其特征在于，包括非并网风电供电模块、电网供电模块和PLC控制模块(8)，所述非并网风电供电模块和所述电网供电模块均连接至电解水制氢负载(11)的供电电源输入端，所述PLC控制模块(8)用于根据所述电解水制氢负载(11)的额定功率和非并网风电输出功率控制所述电网供电模块投入或切除。A wind-network coordinated power supply system for electrolyzing water to produce hydrogen, characterized in that it includes a non-grid-connected wind power supply module, a grid power supply module, and a PLC control module (8), the non-grid-connected wind power supply module and the grid The power supply modules are all connected to the power supply input end of the electrolyzed water hydrogen production load (11), and the PLC control module (8) is used for the rated power and non-grid wind power output power of the electrolyzed water hydrogen production load (11) Controlling the switching on or off of the grid power supply module.
  2. 根据权利要求1所述的用于电解水制氢的风网协同供电***，其特征在于，所述非并网风电供电模块包括风力发电机组(1)和风电整流变换模块(3)，所述风电整流变换模块(3)输入端与所述风力发电机组(1)连接，输出端连接至所述电解水制氢负载(11)的供电电源输入端。The wind-network coordinated power supply system for electrolyzing water to produce hydrogen according to claim 1, wherein the non-grid-connected wind power supply module includes a wind power generating set (1) and a wind power rectification conversion module (3), the The input end of the wind power rectification conversion module (3) is connected to the wind power generating set (1), and the output end is connected to the power supply input end of the electrolyzed water hydrogen production load (11).
  3. 根据权利要求2所述的用于电解水制氢的风网协同供电***，其特征在于，所述风电整流变换模块(3)包括第一AC/DC转换模块(12)和DC/DC转换模块(13)，所述第一AC/DC转换模块(12)由三相桥式可控晶闸管整流电路组成，所述DC/DC转换模块(13)为隔离型双向全桥DC-DC变换电路。The wind-network coordinated power supply system for hydrogen production by electrolysis of water according to claim 2, wherein the wind power rectification conversion module (3) includes a first AC/DC conversion module (12) and a DC/DC conversion module (13), the first AC/DC conversion module (12) is composed of a three-phase bridge controlled thyristor rectifier circuit, and the DC/DC conversion module (13) is an isolated bidirectional full-bridge DC-DC conversion circuit.
  4. 根据权利要求1至3中任一项所述的用于电解水制氢的风网协同供电***，其特征在于，所述电网供电模块包括电网整流变换模块(4)，所述电网整流变换模块(4)输入端与供电电网连接，输出端连接至所述电解水制氢负载(11)的供电电源输入端。The wind-network coordinated power supply system for hydrogen production by electrolysis of water according to any one of claims 1 to 3, wherein the grid power supply module includes a grid rectification conversion module (4), and the grid rectification conversion module (4) The input end is connected to the power supply grid, and the output end is connected to the input end of the power supply of the electrolyzed water hydrogen production load (11).
  5. 根据权利要求4所述的用于电解水制氢的风网协同供电***，其特征在于，所述电网整流变换模块(4)包括交流变压器(14)和连接在所述交流变压器(14)副边绕组的第二AC/DC转换模块(15)，所述第二AC/DC转换模块(15)为三相全控整流电路。The wind-network coordinated power supply system for hydrogen production by electrolysis of water according to claim 4, characterized in that the power grid rectification conversion module (4) includes an AC transformer (14) and is connected to the AC transformer (14). The second AC/DC conversion module (15) of the side winding, the second AC/DC conversion module (15) is a three-phase fully-controlled rectification circuit.
  6. 根据权利要求1至5中任一项所述的用于电解水制氢的风网协同供电***，其特征在于，所述PLC控制模块(8)的信号输入端连接有电压反馈模块(9)和电流反馈模块(10)，输出端连接有电流给定模块(6)和电压给定模块(7)；所述电流给定模块(6)和所述电压给定模块(7)的输出端均与触发板(5)连接，所述触发板(5)用于向所述非并网风电供电模块、所述电网供电模块发送触发信号，以对所述非并网风电供电模块、所述电网供电模块进行控制。The wind-network coordinated power supply system for hydrogen production by electrolysis of water according to any one of claims 1 to 5, characterized in that the signal input end of the PLC control module (8) is connected to a voltage feedback module (9) and a current feedback module (10), the output end is connected with a current given module (6) and a voltage given module (7); the output terminals of the current given module (6) and the voltage given module (7) are all connected to the trigger board (5), and the trigger board (5) is used to send a trigger signal to the non-grid-connected wind power supply module and the grid power supply module, so as to control the non-grid-connected wind power supply module, the Grid power supply module for control.
  7. 根据权利要求6所述的用于电解水制氢的风网协同供电***，其特征在于，所述电压反馈模块(9)和所述电解水制氢负载(11)供电电源输入端的电压表连接，所述电流反馈模块(10)和所述电解水制氢负载(11)供电电源输入端的分流器或霍尔电流传感器连接。The wind-network coordinated power supply system for hydrogen production by electrolysis of water according to claim 6, characterized in that the voltage feedback module (9) is connected to the voltmeter at the input end of the power supply of the hydrogen production load (11) by electrolysis of water , the current feedback module (10) is connected to a shunt or a Hall current sensor at the input end of the power supply of the electrolyzed water hydrogen production load (11).
  8. 一种基于权利要求1至7中任一项所述的供电***的电解水制氢供电方法，其特征在于，A power supply method for hydrogen production by electrolysis of water based on the power supply system described in any one of claims 1 to 7, characterized in that,
    当非并网风电输出功率在95％P N～105％P N范围内时，仅由非并网风电供电模块给电解水制氢负载(11)供电，P N为所述电解水制氢负载(11)的额定工作功率； When the non-grid-connected wind power output power is within the range of 95% P N ~ 105% P N , only the non-grid-connected wind power supply module supplies power to the electrolytic water hydrogen production load (11), and P N is the electrolytic water hydrogen production load (11) rated working power;
    当非并网风电输出功率＞105％P N时，仅由非并网风电供电模块给电解水制氢负载(11)供电，多余的电能通过增加电解水制氢负载(11)进行消纳； When the non-grid-connected wind power output power is >105% PN , only the non-grid-connected wind power supply module supplies power to the electrolyzed water hydrogen production load (11), and the excess electric energy is absorbed by increasing the electrolyzed water hydrogen production load (11);
    当非并网风电输出功率＜95％P N时，由非并网风电供电模块和电网供电模块协同给电解水制氢负载(11)供电； When the non-grid-connected wind power output power is less than 95% PN , the non-grid-connected wind power supply module and the grid power supply module cooperate to supply power to the electrolyzed water hydrogen production load (11);
    当非并网风电输出功率＝0时，仅电网供电模块给电解水制氢负载(11)供电。When the output power of non-grid-connected wind power is 0, only the grid power supply module supplies power to the electrolyzed water hydrogen production load (11).
PCT/CN2021/141365 2021-05-20 2021-12-24 Non-grid-connected wind power and power grid collaborative power supply system and method for producing hydrogen by water electrolysis WO2022242174A1 (en)

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