CN112994054A - Micro-grid energy regulation and control method - Google Patents

Micro-grid energy regulation and control method Download PDF

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Publication number
CN112994054A
CN112994054A CN202110539134.0A CN202110539134A CN112994054A CN 112994054 A CN112994054 A CN 112994054A CN 202110539134 A CN202110539134 A CN 202110539134A CN 112994054 A CN112994054 A CN 112994054A
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microgrid
energy
solid oxide
hydrogen
carbon monoxide
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李曦
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Zhejiang Guohydrogen Energy Technology Development Co ltd
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Zhejiang Guohydrogen Energy Technology Development Co ltd
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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
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • 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
    • H02J15/00—Systems for storing electric energy
    • H02J15/008—Systems for storing electric energy using hydrogen as energy vector
    • 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
    • H02J3/388—Islanding, i.e. disconnection of local power supply from the network
    • 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
    • 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
    • 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
    • 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
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/50—Energy storage in industry with an added climate change mitigation effect

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

The invention discloses a micro-grid energy regulation and control method, which comprises the following steps: s1, monitoring whether the current power generation amount of the microgrid exceeds the current required power amount, if so, executing a step S2, and if not, executing a step S3; s2, co-electrolyzing the deionized water and the carbon dioxide by using the electric energy of the microgrid to generate hydrogen and carbon monoxide, and collecting the hydrogen and the carbon monoxide; and S3, combusting hydrogen and/or carbon monoxide, converting chemical energy into electric energy, and supplementing the electric energy of the microgrid. The co-electrolysis is more efficient and requires fewer electrolysis steps, reducing reactor costs. At the same time, can convert CO into2The CO is electrolyzed to be stored or supplied to industry for use, and the effects of reducing carbon emission and generating sustainable fuel can be achieved.

Description

Micro-grid energy regulation and control method
Technical Field
The disclosure belongs to the technical field of clean energy, and particularly relates to a micro-grid energy regulation and control method.
Background
The micro-grid aims to realize flexible and efficient application of distributed power supplies and solve the problem of grid connection of the distributed power supplies with large quantity and various forms. The development and extension of the micro-grid can fully promote the large-scale access of distributed power sources and renewable energy sources, realize the high-reliability supply of various energy source types of loads, and is an effective mode for realizing an active power distribution network, so that the traditional power grid is transited to a smart power grid.
The existing micro-grid technology has the phenomenon of abandoning wind and light in large quantity, and the main reasons are that the energy storage unit is expensive, the renewable energy source has low power generation efficiency, and the power quality of power generation is unstable.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present disclosure monitors the power generation amount of the microgrid, and regulates and controls the system to co-ionize water and carbon dioxide to consume power, or combust hydrogen and carbon monoxide to generate power, stabilizes the power generation quality, and improves the utilization rate of renewable energy.
A microgrid energy regulation method comprises the following steps:
s1, monitoring whether the current power generation amount of the microgrid exceeds the current required power amount, if so, executing a step S2, and if not, executing a step S3;
s2, co-electrolyzing deionized water and carbon dioxide by using the electric energy of the microgrid to generate a mixed gas of hydrogen and carbon monoxide, collecting the hydrogen and the carbon monoxide, and synthesizing the mixed gas generated by co-electrolysis into an organic compound for collection;
and S3, combusting hydrogen and/or carbon monoxide, converting chemical energy into electric energy, and supplementing the electric energy of the microgrid.
Optionally, in step S2, co-electrolyzing the deionized water and the carbon dioxide by a solid oxide electrolysis cell to generate hydrogen and carbon monoxide; and/or, in step S3, the chemical energy is converted into electrical energy by burning hydrogen and/or carbon monoxide through the solid oxide fuel cell.
Optionally, monitoring the generation voltage of the power generation device in the microgrid; when the power generation voltage is greater than the preset voltage, controlling the solid oxide electrolysis cell assembly to electrolyze deionized water and carbon dioxide together, and reducing the power generation voltage to the preset voltage; and when the output voltage is less than the preset voltage, controlling the solid oxide fuel cell assembly to output the supplementary voltage, combining the supplementary voltage with the system output voltage and boosting the supplementary voltage to the preset voltage.
Optionally, the electrical energy in the microgrid is provided by a renewable energy power generation device.
Optionally, in step S2, the carbon dioxide is derived from an external industrial carbon dioxide pipeline and/or carbon dioxide generated by combusting carbon monoxide in step S3.
Optionally, the gas output after the electrolysis of the solid oxide electrolysis cell in the step S2 is further subjected to heat exchange with deionized water and carbon dioxide input into the solid oxide electrolysis cell.
Alternatively, in step S3, when the solid oxide fuel cell is not enough to supplement the microgrid power, the microgrid power is also supplemented by the fuel power generation device.
Optionally, the fuel collected in the step S2 is introduced into a fuel power generation device to be combusted and generated to supplement the micro-grid power.
Optionally, after the output gas of the solid oxide electrolysis cell and the solid oxide fuel cell is recovered by waste heat, the waste heat is transmitted to the user side in the microgrid.
The method comprises the steps of monitoring whether the generated energy in the micro-grid exceeds the required electric quantity of the micro-grid, when the generated energy in the micro-grid is more or the electricity consumption is low, the redundant electric quantity can co-electrolyze deionized water and carbon dioxide to generate hydrogen and carbon monoxide, the hydrogen and the carbon monoxide are stored in a chemical energy mode or are used industrially, and when the generated energy in the micro-grid is lower or the electricity consumption is high, the hydrogen and/or the carbon monoxide are combusted to generate electricity to supplement the electric energy of the micro-grid. The electric energy is stored in the valley of the electricity consumption and is released in the peak of the electricity consumption, and the conversion efficiency is high.
Co-electrolysis of H2O and CO2Compared with H alone2The performance of the O electrolytic cell is improved. In addition, high temperature co-electrolysis is achieved by electrolysis of H2O and CO2Direct formation of high temperature CO2、CO、H2And (4) mixing the gases. When the mixed gas is used for fuel synthesis, a large number of chemical synthesis reactions such as Fischer-Tropsch synthesis, methanation, methanolization and the like can be carried out, and the mixed gas is used as a raw material to generate corresponding products such as methane, methanol and the like under higher temperature and pressure. The high-temperature co-electrolysis can be used as the former link of chemical synthesis, further utilizes methane or methanol to chemically synthesize other substances, and is coupled with the subsequent flow in the aspects of substance and energy, so that the overall efficiency of the system is improved. And separately electrolyze H2O and CO2In contrast, co-electrolysis is more efficient and requires fewer electrolysis steps, reducing reactor costs. At the same time, can convert CO into2The CO is electrolyzed and stored, even the organic compound is directly synthesized for industrial use, and the effects of reducing carbon emission and generating sustainable fuel can be achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 is a method schematic of a microgrid energy regulation method of the present disclosure;
FIG. 2 is a block diagram of the architecture of the microgrid of the present disclosure;
fig. 3 is a method schematic diagram of a microgrid energy regulation method according to an embodiment of the present disclosure.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 2, the microgrid generally includes a power generation device 3, a part of power utilization devices or clients 6, and when the power generated by the power generation device 3 is large, the power can be transmitted to an external power grid in a grid-connected manner, and if the power generation amount in the microgrid is insufficient, the power can be supplied by the external power grid.
Referring to fig. 1, the present disclosure provides a method for regulating and controlling energy of a microgrid, including:
s1, monitoring whether the current power generation amount of the microgrid exceeds the current required power amount, if so, executing a step S2, and if not, executing a step S3; the whole microgrid system is a clean energy system; the current generated energy is the generated energy of the power generation device 3 in the microgrid system, and the current required electric quantity can be the required electric quantity of all the electric appliances in the microgrid system, and can include all the electric quantities of power generation equipment, control equipment, electric appliances at a user side and the like in the microgrid system, and can also include part of electric quantity which needs to be merged into the power grid;
s2, co-electrolyzing the deionized water and the carbon dioxide by using the electric energy of the microgrid to generate a mixed gas of hydrogen and carbon monoxide, wherein the hydrogen and the carbon monoxide can be respectively extracted from the mixed gas and then independently collected; when the electricity consumption is low, or the electricity generation amount of the power generation device 3 is large, for example, the solar energy electricity generation amount is high in daytime, or the electricity generation amount of the wind power generation device 3 with large wind power is high, or the electricity consumption of the electricity consumption end is small, the redundant electricity can be used for co-electrolyzing the deionized water and the carbon dioxide, and the co-electrolysis efficiency of the deionized water and the carbon dioxide is higher compared with the co-electrolysis of the deionized water and the carbon dioxide respectively. The hydrogen and the carbon monoxide which are collected by co-electrolysis of the deionized water and the carbon dioxide by utilizing the electric energy of the micro-grid can be stored or can be filled for industrial use;
the mixed gas of hydrogen and carbon monoxide generated by co-electrolysis can also be directly synthesized into organic compounds by fuel synthesis. The organic compound can be methane, methanol, gasoline, diesel oil and the like, wherein the methane, the methanol and the like can be used as industrial raw materials, and the organic compound after fuel synthesis can also be used as fuel for combustion power generation when the electric energy of a power grid is insufficient. The high-temperature gas after fuel synthesis contains organic compound fuel and unreacted hydrogen and carbon monoxide, and can be separately purified and collected for storage, for example, the hydrogen, carbon monoxide, methane, methanol, etc. in the high-temperature gas can be separately collected. Wherein, the methane, the methanol and the like can be collected and then used as raw materials for industrial chemical synthesis to generate other chemical products.
And S3, combusting hydrogen and/or carbon monoxide, converting chemical energy into electric energy, and supplementing the electric energy of the microgrid. When the power generation amount of the power generation device 3 of the microgrid cannot meet the power demand, for example, at night, the solar power generation device 3 cannot generate power, or when the power generation amount of the power generation device 3 is small due to small wind power, or when the power consumption amount of the power consumption end is large, the hydrogen or carbon monoxide collected in the step S2 is combusted, and the chemical energy is converted into electric energy to be provided to the user end 6 in the microgrid for use.
The embodiment has the advantages that the co-electrolysis of the deionized water and the carbon dioxide has higher co-electrolysis efficiency and needs less electrolysis steps compared with the electrolysis of the deionized water and the carbon dioxide respectively, thereby reducing the cost of the reactor. High temperature co-electrolysis by electrolysis of H2O and CO2Direct formation of high temperature CO2、CO、H2And (4) mixing the gases. A large number of chemical synthesis reactions such as Fischer-Tropsch synthesis, methanation, methanolization and the like use mixed gas as raw materials to generate corresponding products at high temperature and high pressure. The high-temperature co-electrolysis can be used as the former link of chemical synthesis and coupled with the subsequent process in two aspects of matter and energy, thereby improving the overall efficiency of the system. And separately electrolyze H2O and CO2In contrast, co-electrolysis is more efficient and requires fewer electrolysis steps, reducing reactor costs. At the same time, can convert CO into2The CO is electrolyzed to be stored or supplied to industry for use, and the effects of reducing carbon emission and generating sustainable fuel can be achieved.
Referring to fig. 3, in an embodiment, after the co-electrolysis generates the mixture of hydrogen and carbon monoxide, the hydrogen and carbon monoxide in the mixture may be first separated and purified and collected, and when fuel synthesis is required, the collected hydrogen and carbon monoxide may be mixed and then fuel synthesis may be performed.
In one embodiment, in step S2, deionized water and carbon dioxide are co-electrolyzed by solid oxide electrolysis cell 1 (SOEC) to produce hydrogen and carbon monoxide; in step S3, the chemical energy is converted into electrical energy by combusting hydrogen and/or carbon monoxide by the solid oxide fuel cell 2 (SOFC).
The solid oxide electrolytic cell 1 (SOEC for short) can co-electrolyze deionized water and carbon dioxide to generate hydrogen and carbon monoxide, and convert external electric energy into chemical energy, the SOEC is an electric hydrogen production technology with high conversion efficiency, is also an important load form for new energy consumption in a future power grid, and can consume renewable wind energy and light energy at a high proportion; the co-electrolysis of the deionized water and the carbon dioxide can well solve the problem of industrial carbon dioxide emission; meanwhile, the hydrogen and the carbon monoxide can further synthesize fuels such as methane and the like.
The solid oxide fuel cell 2 (SOFC for short) can burn hydrogen and/or carbon monoxide to convert chemical energy into electric energy, and when an external power grid or a user terminal 6 needs the electric energy, the solid oxide fuel cell 2 can generate electricity by taking the hydrogen, the carbon monoxide and the like which are prepared and collected by the SOEC as raw materials to supplement the electric energy of the user terminal 6 or the external power grid.
The SOFC-SOEC integrated system has significant advantages in terms of efficiency, long-term sustainability, and low carbon dioxide emissions. When the system is powered by an external power grid, electric energy can be purchased at low price of the power grid to generate hydrogen and carbon monoxide through electrolysis, and the hydrogen and/or the carbon monoxide are combusted at high price of the power grid to convert chemical energy into electric energy.
In another embodiment, since the power generation amount and the voltage of the renewable energy power generation device 3 are unstable, in order to improve the stability of the output voltage of the power generation device 3, the power generation voltage of the power generation device 3 in the microgrid can also be monitored; when the power generation voltage is greater than the preset voltage, controlling the electrolysis efficiency of the solid oxide electrolysis cell assembly for co-electrolysis of deionized water and carbon dioxide, and reducing the power generation voltage to the preset voltage; when the output voltage is smaller than the preset voltage, the solid oxide fuel cell assembly is controlled to output the supplementary voltage, and the supplementary voltage is combined with the output voltage of the system and then boosted to the preset voltage to be reduced to the preset voltage.
Since the solid oxide fuel cell 2 (SOFC) generates carbon dioxide even when carbon monoxide is combusted to generate electric power, in order to reduce carbon emissions of the system and achieve the purpose of carbon neutralization of the system, in step S2, carbon dioxide is derived from carbon dioxide generated by combusting carbon monoxide in step S3. In step S2, the carbon dioxide source may be an external industrial carbon dioxide pipeline for electrolyzing part of the carbon dioxide discharged from an external plant, and the electrolyzed CO may be used as a fuel or may be collected together with hydrogen to synthesize organic compounds, which may reduce carbon emission and generate sustainable fuel.
In a preferred embodiment, in order to collect and manage heat of the high-temperature gas generated by the solid oxide electrolysis cell 1, the high-temperature gas output after the electrolysis of the solid oxide electrolysis cell 1 in the step S2 is further subjected to heat exchange with the deionized water and the carbon dioxide input into the solid oxide electrolysis cell 1.
The cathode outlet of the solid oxide electrolysis cell 1 will generate high temperature water vapor and H2, and the anode outlet will generate high temperature O2The high-temperature gas can preheat deionized water and carbon dioxide, the deionized water is heated into steam, and the steam and the carbon dioxide are introduced into the solid oxide electrolytic cell 1 for electrolysis. Through carrying out the heat management to the electrolytic cell, improved system efficiency, the core element that realizes the heat management is the heat exchanger, through the heat exchanger design, can add energy cycle in the system, recycle export gas waste heat. The heat exchange network is designed by using pinch point analysis or different heat exchanger designs are adopted, and the system efficiency can reach 75-83%.
After recovering the waste heat of the gas output by the solid oxide electrolysis cell 1 and the solid oxide fuel cell 2, the waste heat can be transmitted to a user terminal 6 in the microgrid; for example, the high-temperature water vapor generated at the cathode outlet of the solid oxide electrolytic cell 1 can be collected and introduced to the user terminal 6 or a factory building to be used as a steam energy source, so that the diversity of heat energy utilization is improved. The high-temperature hydrogen generated at the cathode outlet and the high-temperature oxygen generated at the anode outlet of the solid oxide electrolytic cell 1 can exchange heat with water, and then the water vapor after absorbing heat is transmitted to the user terminal 6.
Referring to fig. 2, in another preferred embodiment, the mixed gas containing hydrogen and carbon monoxide produced by the co-electrolysis in step S2 is subjected to fuel synthesis by the fuel synthesis apparatus 4 to synthesize an organic compound. For example, the fuel synthesizing device 4 is connected to the cathode outlet of the oxide electrolysis cell module 1, and the fuel synthesizing device 4 can synthesize organic compounds from carbon monoxide and hydrogen. High temperature co-electrolysis of H2O and CO2Direct generation of high temperature CO2、CO、H2The mixed gas, the high-temperature mixed gas, in the fuel synthesis device 4, can undergo a large number of chemical synthesis reactions such as Fischer-Tropsch synthesis methanation, methanolization and the like, and the mixed gas is used as a raw material to generate a corresponding product under a higher temperature and pressure. The high-temperature co-electrolysis can be used as the former link of chemical synthesis and coupled with the subsequent process in two aspects of matter and energy, thereby improving the overall efficiency of the system.
The cathode outlet of the solid oxide electrolytic cell 1 can generate high-temperature steam, CO and H2Mixture of gases, if desired CO or H2The single gas can be separated and collected separately, if fuel synthesis is needed, the cathode outlet is directly communicated with the fuel synthesis device 4, and the gas outlet of the fuel synthesis device 4 is used for CO or H2The individual gases were collected after separation.
In one embodiment, in step S3, when the solid oxide fuel cell is not enough to supplement the microgrid power, the microgrid power is also supplemented by the fuel power generation device 5. The fuel cell system 5 may supplement the output power to supplement the power when the solid oxide fuel cell 2 is short of power. The fuel power generator 5 may be configured such that the fuel collected in step S2 is fed to the fuel power generator 5 to be combusted and generated to supplement the microgrid power, or may be configured such that an externally purchased fuel is used, and the fuel power generator 5 may be a gas turbine. The micro-grid can also comprise an energy storage unit 7, and the output cable is electrically connected with the user terminal 6 through the energy storage unit 7. The energy storage unit 7 may be a battery pack, which may serve as a temporary storage unit for electric energy, or may serve as an emergency power source in the system.
The method can improve the utilization efficiency of renewable energy to the maximum extent and reduce the use of energy storage units in the microgrid. When the wind and light power generation meets the use requirements of users, the SOFC is used for stabilizing the electric energy quality in real time and supplying the electric energy quality to the users; when the wind and light power generation has surplus, the surplus power is utilized to prepare hydrogen (or co-decomposition gas) in real time, and the hydrogen is stored or the power generation is connected to the grid in real time, so that the impact on a power grid is avoided; when wind and light power generation is insufficient, stored hydrogen (or co-decomposition gas) is used as fuel to supply to the SOFC for power generation, and user requirements are met.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (9)

1. A microgrid energy regulation method is characterized by comprising the following steps:
s1, monitoring whether the current power generation amount of the microgrid exceeds the current required power amount, if so, executing a step S2, and if not, executing a step S3;
s2, co-electrolyzing deionized water and carbon dioxide by using the electric energy of the microgrid to generate a mixed gas of hydrogen and carbon monoxide, collecting the hydrogen and the carbon monoxide, and synthesizing the mixed gas generated by co-electrolysis into an organic compound for collection;
and S3, combusting hydrogen and/or carbon monoxide, converting chemical energy into electric energy, and supplementing the electric energy of the microgrid.
2. The microgrid energy regulation method of claim 1, characterized in that: in step S2, co-electrolyzing deionized water and carbon dioxide by a solid oxide electrolytic cell to generate hydrogen and carbon monoxide; and/or, in step S3, the chemical energy is converted into electrical energy by burning hydrogen and/or carbon monoxide through the solid oxide fuel cell.
3. The microgrid energy regulation method of claim 2, characterized in that: monitoring the generating voltage of a generating set in the micro-grid; when the power generation voltage is greater than the preset voltage, controlling the solid oxide electrolysis cell assembly to electrolyze deionized water and carbon dioxide together, and reducing the power generation voltage to the preset voltage; and when the output voltage is less than the preset voltage, controlling the solid oxide fuel cell assembly to output the supplementary voltage, combining the supplementary voltage with the system output voltage and boosting the supplementary voltage to the preset voltage.
4. The microgrid energy regulation method of claim 3, characterized in that: the electric energy in the microgrid is provided by a renewable energy power generation device.
5. The microgrid energy regulation method of claim 2, characterized in that: in step S2, the carbon dioxide is derived from an external industrial carbon dioxide pipeline and/or carbon dioxide generated by combusting carbon monoxide in step S3.
6. The microgrid energy regulation method of claim 2, characterized in that: the gas output after the electrolysis of the solid oxide electrolysis cell in the step S2 exchanges heat with the deionized water and the carbon dioxide input into the solid oxide electrolysis cell.
7. The microgrid energy regulation method of claim 1, characterized in that: in step S3, when the solid oxide fuel cell is not enough to supplement the microgrid power, the microgrid power is also supplemented by the fuel power generation device.
8. The microgrid energy regulation method of claim 7, characterized in that: and (4) introducing the fuel collected in the step (S2) into a fuel power generation device to burn and generate power to supplement the electric energy of the microgrid.
9. The microgrid energy regulation method of claim 7, characterized in that: and after the output gas of the solid oxide electrolysis cell and the solid oxide fuel cell is recovered by waste heat, the waste heat is transmitted to a user side in the micro-grid.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114629182A (en) * 2022-03-25 2022-06-14 厦门大学 Energy storage equipment and energy storage method for nuclear power station
WO2023196402A1 (en) * 2022-04-07 2023-10-12 Twelve Benefit Corporation Carbon oxide electrolyzer integrated with electrical grid
US11939284B2 (en) 2022-08-12 2024-03-26 Twelve Benefit Corporation Acetic acid production

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105261770A (en) * 2015-09-30 2016-01-20 国网智能电网研究院 New energy electrolysis and storage system
CN105419892A (en) * 2016-01-13 2016-03-23 山东联星能源集团有限公司 High-temperature co-electrolysis method for preparing clean fuels
CN105576273A (en) * 2015-12-11 2016-05-11 西安交通大学 Reversible recycling green energy conversion system and conversion method
CN106086923A (en) * 2016-07-22 2016-11-09 全球能源互联网研究院 A kind of coupling CO2the hydrogen manufacturing energy storage device of recycling
CN109687002A (en) * 2018-11-13 2019-04-26 中广核研究院有限公司 A kind of distributed triple-generation system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105261770A (en) * 2015-09-30 2016-01-20 国网智能电网研究院 New energy electrolysis and storage system
CN105576273A (en) * 2015-12-11 2016-05-11 西安交通大学 Reversible recycling green energy conversion system and conversion method
CN105419892A (en) * 2016-01-13 2016-03-23 山东联星能源集团有限公司 High-temperature co-electrolysis method for preparing clean fuels
CN106086923A (en) * 2016-07-22 2016-11-09 全球能源互联网研究院 A kind of coupling CO2the hydrogen manufacturing energy storage device of recycling
CN109687002A (en) * 2018-11-13 2019-04-26 中广核研究院有限公司 A kind of distributed triple-generation system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114629182A (en) * 2022-03-25 2022-06-14 厦门大学 Energy storage equipment and energy storage method for nuclear power station
WO2023196402A1 (en) * 2022-04-07 2023-10-12 Twelve Benefit Corporation Carbon oxide electrolyzer integrated with electrical grid
US11939284B2 (en) 2022-08-12 2024-03-26 Twelve Benefit Corporation Acetic acid production

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Application publication date: 20210618