Off-network system for preparing green hydrogen and alcohol based on combination of wind, light and biomass

Abstract

The utility model discloses an off-network system for preparing green hydrogen and alcohol based on combination of wind, light and biomass. Comprising a wind power generation system, a photovoltaic power generation system, a biomass power generation system, an electric hydrogen production device, a methanol synthesis system, a hydrogen storage device, an oxygen storage device, a carbon dioxide storage device, a battery charging and replacing station, an external hydrogen use system, an external oxygen use system, an electric power collection bus, a power monitoring module, a hydrogen use monitoring module, an oxygen use monitoring module and a carbon dioxide use monitoring module. A comprehensive monitoring module; according to the utility model, the discharge power of the wind power generation system, the photovoltaic power generation system, the biomass power generation system and the charging and battery replacing station is monitored, the electric power generated by renewable energy is used for producing hydrogen and alcohol, various power supply combinations are reasonably adjusted and optimized, and under the condition that the biomass power generation system is used as an adjustable stable power supply and the charging and battery replacing station is used as an energy storage power supply, the energy consumption is reduced. And full-link zero-emission clean and green hydrogen and alcohol production is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to renewable energy and hydrogen energy application field, especially, a kind of off-grid system based on wind, light, green hydrogen alcohol is made jointly to green hydrogen alcohol. BACKGROUND

[0002] Hydrogen energy is regarded as the most potential clean energy in the 21st century, which has the characteristics of high calorific value, high mass energy density and low volume energy density, can meet the long-term peak shaving demand, and has the dual attributes of "process energy" and "energy-containing energy".

[0003] Methanol can be directly used as fuel to replace liquid fuels such as gasoline and diesel, and is internationally recognized as clean fuel, and can also be used as chemical raw material to reduce the consumption of coal, natural gas and other fuels, thereby improving energy self-sufficiency and reducing carbon emissions. Green methanol synthesized from green hydrogen and non-fossil fuels has the characteristics of safety, efficiency and clean emission, and can achieve zero carbon emission in the whole industry chain.

[0004] To ensure the stability and reliability of the system operation, the off-grid system usually has higher requirements for the stability of the power supply and the energy storage equipment. Biomass power plant, as a stable power plant, can provide sufficient rotational inertia for the off-grid system to ensure the stability of the off-grid system operation. The charging and discharging station has special charging and discharging performance, and can be controlled and dispatched uniformly through the off-grid system comprehensive monitoring module to realize power complementation of various renewable energy sources in the off-grid system, play a role similar to unconventional energy storage, and complete peak clipping.

[0005] Therefore, to promote efficient and sustainable development of renewable energy, improve the utilization efficiency of renewable energy, realize the coupling and collaborative development of wind power, photovoltaic and biomass, ensure the green of hydrogen-based energy whole industry chain, and play the role of resource conversion of hydrogen-based energy in the development of new power system, it is necessary to propose an off-grid system based on wind, light and biomass to produce green hydrogen alcohol. UTILITY MODEL CONTENT

[0006] The utility model discloses a kind of off-grid systems based on wind, light, green hydrogen alcohol is made jointly to green hydrogen alcohol, can realize renewable energy power generation coupling collaboration and green hydrogen alcohol in off-grid system, improve the level of green application of electric power production, guarantee off-grid system operation safety reliability.

[0007] To achieve the above utility model purposes, the utility model provides an off-grid system based on wind, light, green hydrogen alcohol is made jointly to green hydrogen alcohol, characterized by: including wind power generation system, photovoltaic power generation system, biomass power generation system, hydrogen production equipment, methanol synthesis system, hydrogen storage equipment, oxygen storage equipment, carbon dioxide storage equipment, charging and discharging station, power collection bus;

[0008] The wind power generation system is connected to the power collection bus through a wind power outgoing line;

[0009] The photovoltaic power generation system is connected to the power collection bus through a photovoltaic outgoing line;

[0010] The biomass power generation system is connected to the power collection bus through a biomass power plant outgoing line;

[0011] The electric hydrogen production device is connected to the power collection bus through a hydrogen production power supply line;

[0012] The charging and battery swapping station is connected to the power collection bus through a power exchange line;

[0013] The electric hydrogen production device is connected to the external hydrogen system through a hydrogen transportation pipeline;

[0014] The electric hydrogen production device is connected to the external oxygen system through an oxygen transportation pipeline;

[0015] The electric hydrogen production device is connected to the hydrogen storage device through a hydrogen storage pipeline;

[0016] The electric hydrogen production device is connected to the oxygen storage device through an oxygen storage pipeline;

[0017] The hydrogen storage device is connected to the methanol synthesis system through a hydrogen supply pipeline;

[0018] The oxygen storage device is connected to the biomass power generation system through an oxygen supply pipeline;

[0019] The biomass power generation system is connected to the methanol synthesis system through a methanol synthesis system power supply line;

[0020] The biomass power generation system is connected to the carbon dioxide storage device through a carbon dioxide transportation pipeline;

[0021] The carbon dioxide storage device is connected to the methanol synthesis system through a carbon dioxide supply pipeline.

[0022] Further, the wind power outgoing line is provided with a wind power monitoring module for obtaining the wind power supply power P W ;

[0023] The photovoltaic outgoing line is provided with a photovoltaic power monitoring module for obtaining the photovoltaic power supply power P P ;

[0024] The biomass power plant outgoing line is provided with a biomass power plant power monitoring module for obtaining the biomass power generator set power supply power P B ;

[0025] The power outgoing line is provided with an electric hydrogen production power monitoring module for obtaining the electric hydrogen production system power consumption PE ;

[0026] The power exchange circuit is provided with a charging and battery swapping station power monitoring module for obtaining charging power P C and discharging power P L of the charging and battery swapping station.

[0027] The methanol synthesis system power supply circuit is provided with a biomass power plant low-voltage side power monitoring module for switching the methanol synthesis system power supply circuit.

[0028] The hydrogen storage pipeline is provided with a No. 1 hydrogen monitoring module for obtaining the standard volume V H1 of the hydrogen storage pipeline, and the rated standard volume of the hydrogen storage equipment is V H .

[0029] The hydrogen supply pipeline is provided with a No. 2 hydrogen monitoring module for obtaining the standard volume V H2 of the hydrogen supply pipeline, and the rated standard volume of the methanol synthesis system alcohol production is V M-H .

[0030] The hydrogen supply pipeline is provided with a No. 3 hydrogen monitoring module for obtaining the standard volume V H3 of the hydrogen supply pipeline, and the rated standard volume of the external hydrogen system is V O-H .

[0031] The oxygen storage pipeline is provided with a No. 1 oxygen monitoring module for obtaining the standard volume V O1 of the oxygen storage pipeline, and the rated standard volume of the hydrogen storage equipment is V O .

[0032] The oxygen supply pipeline is provided with a No. 2 oxygen monitoring module.

[0033] The oxygen supply pipeline is provided with a No. 3 oxygen monitoring module.

[0034] The carbon dioxide supply pipeline is provided with a No. 1 carbon dioxide monitoring module for obtaining the standard volume V C1 of the carbon dioxide supply pipeline, and the rated standard volume of the carbon dioxide storage equipment is V C .

[0035] The carbon dioxide supply pipeline is provided with a No. 2 carbon dioxide monitoring module for obtaining the standard volume V C2 of the carbon dioxide supply pipeline, and the rated standard volume of the methanol synthesis system is V M-C .

[0036] The wind power monitoring module, the photovoltaic power monitoring module, the biomass power plant power monitoring module, the power charging and changing station power monitoring module, the electric hydrogen production power monitoring module, the biomass power plant low voltage side power monitoring module, the No. 1 hydrogen monitoring module, the No. 2 hydrogen monitoring module, the No. 3 hydrogen monitoring module, the No. 1 oxygen monitoring module, the No. 2 oxygen monitoring module, the No. 3 oxygen monitoring module, the No. 1 carbon dioxide monitoring module, the No. 2 carbon dioxide monitoring module and the electric hydrogen production equipment connection comprehensive monitoring module are connected;

[0037] The comprehensive monitoring module is used for judging the electric hydrogen production system power P E and the logical relationship between the wind power sending power P W , the photovoltaic sending power P P , the biomass power plant sending power P B , the power charging and changing station charging power P C and the power charging and changing station discharging power P L reported by the electric hydrogen production equipment to the comprehensive monitoring module and the logical relationship between the electric hydrogen production standard volume V EH reported by the electric hydrogen production equipment to the comprehensive monitoring module and the external hydrogen system standard volume V O-H , the hydrogen pipeline standard volume V H1 , the hydrogen storage equipment rated standard volume V H , the hydrogen storage pipeline standard volume V H2 , the hydrogen supply pipeline standard volume V H3 and the methanol synthesis system hydrogen rated standard volume V M-H reported by the electric hydrogen production equipment to the comprehensive monitoring module and the logical relationship between the electric hydrogen production oxygen standard volume V EO reported by the electric hydrogen production equipment to the comprehensive monitoring module and the oxygen pipeline standard volume V O2 , the oxygen storage equipment rated standard volume V O reported by the electric hydrogen production equipment to the comprehensive monitoring module and the logical relationship between the methanol synthesis system carbon dioxide rated standard volume V M-C reported by the methanol synthesis system to the comprehensive monitoring module and the carbon dioxide pipeline standard volume V C1 , the carbon dioxide storage equipment rated standard volume V C , the carbon dioxide supply pipeline standard volume V C2 , and sends an instruction.

[0038] The comprehensive monitoring module is used for judging the logical relationship and sending the instruction, specifically:

[0039] 1) System initial start-up stage:

[0040] The integrated monitoring module sends instructions to the hydrogen production equipment and the methanol synthesis system to start the hydrogen production equipment and the methanol synthesis system, sends instructions to the hydrogen production power monitoring module at the same time, and inputs the hydrogen production power supply line to supply the power collected by the power collection bus to the hydrogen production equipment, sends instructions to the biomass power plant low-voltage side power monitoring module at the same time, and inputs the methanol synthesis system power supply line to supply the biomass power plant low-voltage side power to the methanol synthesis system;

[0041] When P W + P P + P B ≤ P E , the integrated monitoring module sends instructions to the No. 1 hydrogen monitoring module and the No. 2 hydrogen monitoring module to start the hydrogen storage pipeline and the hydrogen supply pipeline, to deliver hydrogen to the methanol synthesis system, sends instructions to the No. 1 carbon dioxide monitoring module and the No. 2 carbon dioxide monitoring module to start the carbon dioxide delivery hydrogen pipeline and the carbon dioxide supply hydrogen pipeline, to deliver carbon dioxide to the methanol synthesis system, the methanol synthesis system synthesizes methanol, sends instructions to the No. 1 oxygen monitoring module and the No. 2 oxygen monitoring module at the same time to start the oxygen storage pipeline and the oxygen supply pipeline, to deliver oxygen to the biomass power generation system, and to improve the efficiency of the biomass power generation system; when V H2 > V M-H , the integrated monitoring module sends instructions to the No. 2 hydrogen monitoring module to reduce the hydrogen delivery capacity of the hydrogen supply pipeline, to ensure that V H2 = V M-H , and to start the hydrogen storage equipment to start hydrogen storage, the integrated monitoring module sends instructions to the No. 2 oxygen monitoring module to close the oxygen supply pipeline, and to start the oxygen storage equipment to start oxygen storage; when V C2 > V M-C , the integrated monitoring module sends instructions to the No. 2 carbon dioxide monitoring module to reduce the carbon dioxide delivery capacity of the carbon dioxide supply pipeline, to ensure that V C2 = V M-C , and to start the carbon dioxide storage equipment to start carbon dioxide storage; when V H1 > V H , the integrated monitoring module sends instructions to the No. 1 hydrogen monitoring module to close the hydrogen storage pipeline, and sends instructions to the No. 3 hydrogen monitoring module at the same time to start the hydrogen delivery pipeline to deliver hydrogen to the external hydrogen system; when V O1 > V O , the integrated monitoring module sends instructions to the No. 1 oxygen monitoring module to close the oxygen storage pipeline, and sends instructions to the No. 3 oxygen monitoring module at the same time to start the oxygen delivery pipeline to deliver oxygen to the external oxygen system; when V C1 > V C , the integrated monitoring module sends instructions to the No. 1 carbon dioxide monitoring module to close the carbon dioxide delivery pipeline; when V H3 > V O-HWhen P W +P P +P B >P C , the integrated monitoring module transmits information to the wind power monitoring module, the photovoltaic power monitoring module, and the biomass power plant power monitoring module to reduce output until P W +P P +P B ≤P C .

[0042] 2) After supplying power to the charging and swapping station:

[0043] When P E <P W +P P +P B ≤P E +P C , the power collected by the power collection bus is simultaneously supplied to the electric hydrogen production equipment and the charging and swapping station, and the low-voltage side of the biomass power plant supplies power to the methanol synthesis system;

[0044] When P W +P P +P B >P E +P C , the power collected by the power collection bus is simultaneously supplied to the electric hydrogen production equipment and the charging and swapping station, and the low-voltage side of the biomass power plant supplies power to the methanol synthesis system, and the integrated monitoring module transmits information to the wind power monitoring module, the photovoltaic power monitoring module, and the biomass power plant power monitoring module to reduce output until P W +P P +P B ≤P E +P C .

[0045] 3) When the hydrogen storage equipment is saturated and the electric hydrogen production equipment stops delivering hydrogen to the hydrogen storage equipment:

[0046] When P C <P W +P P +P B ≤P E +P CWhen V H3 > V O-H , the integrated monitoring module sends instructions to the No. 3 hydrogen monitoring module to close the hydrogen pipeline and stop hydrogen delivery to the external hydrogen system, sends instructions to the No. 3 oxygen monitoring module to close the oxygen pipeline and stop oxygen delivery to the external oxygen system, and synchronously transmits information to the wind power monitoring module, the photovoltaic power monitoring module and the biomass power plant power monitoring module to reduce output until P W + P P + P B = P C .

[0047] When P E + P W + P P + P B ≤ P E + P C , the power collection bus supplies power to the charging and battery swapping station and the electric hydrogen production equipment, the low-voltage side of the biomass power plant supplies power to the methanol synthesis system, the electric hydrogen production equipment delivers hydrogen to the external hydrogen system through the hydrogen pipeline and delivers oxygen to the external oxygen system through the oxygen pipeline; when V H3 > V O-H , the integrated monitoring module sends instructions to the No. 3 hydrogen monitoring module to close the hydrogen pipeline and stop hydrogen delivery to the external hydrogen system, sends instructions to the No. 3 oxygen monitoring module to close the oxygen pipeline and stop oxygen delivery to the external oxygen system, and synchronously transmits information to the wind power monitoring module, the photovoltaic power monitoring module and the biomass power plant power monitoring module to reduce output until P W + P P + P B = P C .

[0048] When P W + P P + P B < P E , and the charging and battery swapping station has sufficient power, the integrated monitoring module sends instructions to the charging and battery swapping station power monitoring module, the charging and battery swapping station changes from the charging state to the discharging state, the charging and battery swapping station discharges power through the power exchange line to the power collection bus, after the power collection bus collects the power of the wind power generation system, the photovoltaic power generation system and the charging and battery swapping station, it is sent to the electric hydrogen production system, and ensures that P W + P P + P B + P L ≤ P E , providing the power needs of the external hydrogen system for hydrogen production.

[0049] Further, the wind power generation system comprises wind turbines and a booster unit connected in sequence; the photovoltaic power generation system comprises photovoltaic arrays and a booster unit connected in sequence; the biomass power generation system comprises biomass power generation units and a booster unit connected in sequence, and is equipped with a CO2 capture system; and the booster unit comprises a booster transformer low-voltage bus, a booster transformer and a booster transformer high-voltage bus connected in sequence.

[0050] The utility model has the advantages of:

[0051] (1) By establishing the off-grid system based on wind, light, biomass combined green hydrogen alcohol, renewable energy power generation coupling and green hydrogen alcohol are realized, and the green hydrogen energy industry chain is ensured;

[0052] (2) By monitoring the wind power generation system, photovoltaic power generation system, biomass power generation system and the discharge power of the charging and swapping station, the power generated by renewable energy is used for hydrogen alcohol, and the combination of various power sources is reasonably adjusted and optimized, realizing zero-emission clean green electricity hydrogen alcohol in all links;

[0053] (3) By hydrogen storage pipeline, hydrogen supply pipeline, hydrogen supply equipment and hydrogen storage equipment are used for hydrogen supply of the methanol synthesis system, by carbon dioxide pipeline, carbon dioxide supply pipeline, biomass power generation system and carbon dioxide storage equipment are used for carbon dioxide supply of the methanol synthesis system, by hydrogen pipeline, hydrogen is supplied to the external hydrogen system, and the hydrogen green degree is ensured;

[0054] (4) By oxygen storage pipeline, oxygen supply pipeline, hydrogen production equipment and oxygen storage equipment are used for oxygen supply of the biomass power generation system, and the power generation efficiency of the biomass power generation system is improved;

[0055] (5) By comprehensive monitoring module, power monitoring module, hydrogen monitoring module and carbon dioxide monitoring module, the outgoing line, power exchange line, power supply line, hydrogen production equipment, hydrogen storage equipment, carbon dioxide storage equipment, methanol synthesis system, charging and swapping station and hydrogen pipeline, hydrogen supply pipeline, hydrogen storage pipeline, carbon dioxide pipeline and carbon dioxide supply pipeline are jointly monitored and implemented, which can improve the coupling and collaborative utilization of renewable energy and realize zero carbonization of green hydrogen energy. BRIEF DESCRIPTION OF DRAWINGS

[0056] Figure 1 The utility model discloses a green hydrogen alcohol off-grid system based on wind, light and biomass combination.

[0057] Figure 2 The utility model discloses a green hydrogen alcohol off-grid system based on wind, light and biomass combination connected hydrogenation station. DETAILED DESCRIPTION

[0058] In order to better understand the purpose, structure and function of the utility model, the utility model of a kind of off-grid system based on wind, light, biomass combined green hydrogen alcohol is further described in detail in conjunction with the drawings.

[0059] Referring to Figure 1 , the off-grid system based on wind, light, biomass combined green hydrogen alcohol includes: wind power generation system, photovoltaic power generation system, biomass power generation system, hydrogen production equipment, methanol synthesis system, hydrogen storage equipment, oxygen storage equipment, carbon dioxide storage equipment, charging and changing station, power collection bus.

[0060] The wind power generation system is connected to the power collection bus through a wind power transmission line.

[0061] The photovoltaic power generation system is connected to the power collection bus through a photovoltaic transmission line.

[0062] The biomass power generation system is connected to the power collection bus through a biomass power plant transmission line.

[0063] The hydrogen production equipment is connected to the power collection bus through a hydrogen production power supply line.

[0064] The charging and changing station is connected to the power collection bus through a power exchange line.

[0065] The hydrogen production equipment is connected to the external hydrogen system through a hydrogen transmission pipeline.

[0066] The hydrogen production equipment is connected to the external oxygen system through an oxygen transmission pipeline.

[0067] The hydrogen production equipment is connected to the hydrogen storage equipment through a hydrogen storage pipeline.

[0068] The hydrogen production equipment is connected to the oxygen storage equipment through an oxygen storage pipeline.

[0069] The hydrogen storage equipment is connected to the methanol synthesis system through a hydrogen supply pipeline.

[0070] The oxygen storage equipment is connected to the biomass power generation system through an oxygen supply pipeline.

[0071] The biomass power generation system is connected to the methanol synthesis system through a methanol synthesis system power supply line.

[0072] The biomass power generation system is connected to the carbon dioxide storage equipment through a carbon dioxide transmission pipeline.

[0073] The carbon dioxide storage equipment is connected to the methanol synthesis system through a carbon dioxide supply pipeline.

[0074] A wind power monitoring module is arranged on the wind power transmission line, for obtaining wind power supply power P W .

[0075] A photovoltaic power monitoring module is arranged on the photovoltaic transmission line, for obtaining photovoltaic power supply power PP .

[0076] A biomass power plant power monitoring module is arranged on the biomass power plant outgoing line to obtain the power P B .

[0077] An electricity hydrogen production power monitoring module is arranged on the power outgoing line to obtain the power P E .

[0078] A charging and replacing station power monitoring module is arranged on the electricity exchange line to obtain the charging power P C and the discharging power P L .

[0079] A biomass power plant low-voltage side power monitoring module is arranged on the methanol synthesis system power supply line to switch the methanol synthesis system power supply line.

[0080] A No. 1 hydrogen use monitoring module is arranged on the hydrogen storage pipeline to obtain the standard volume V H1 , and the rated standard volume of the hydrogen storage equipment is V H .

[0081] A No. 2 hydrogen use monitoring module is arranged on the hydrogen supply pipeline to obtain the standard volume V H2 , and the rated standard volume of the methanol synthesis system alcohol production is V M-H .

[0082] A No. 3 hydrogen use monitoring module is arranged on the hydrogen transmission pipeline to obtain the standard volume V H3 , and the rated standard volume of the external hydrogen system is V O-H .

[0083] A No. 1 oxygen use monitoring module is arranged on the oxygen storage pipeline to obtain the standard volume V O1 , and the rated standard volume of the hydrogen storage equipment is V O .

[0084] A No. 2 oxygen use monitoring module is arranged on the oxygen supply pipeline.

[0085] A No. 3 oxygen use monitoring module is arranged on the oxygen transmission pipeline.

[0086] A No. 1 carbon dioxide use monitoring module is arranged on the carbon dioxide transmission pipeline to obtain the standard volume V C1 , and the rated standard volume of the carbon dioxide storage equipment is V C .

[0087] A No. 2 carbon dioxide use monitoring module is arranged on the carbon dioxide supply pipeline to obtain the standard volume V C2 , and the rated standard volume of the methanol synthesis system is VM-C .

[0088] The wind power monitoring module, the photovoltaic power monitoring module, the biomass power plant power monitoring module, the charging and battery swapping station power monitoring module, the electric hydrogen production power monitoring module, the biomass power plant low-voltage side power monitoring module, the No. 1 hydrogen monitoring module, the No. 2 hydrogen monitoring module, the No. 3 hydrogen monitoring module, the No. 1 oxygen monitoring module, the No. 2 oxygen monitoring module, the No. 3 oxygen monitoring module, the No. 1 carbon dioxide monitoring module, the No. 2 carbon dioxide monitoring module, and the electric hydrogen production equipment connection comprehensive monitoring module.

[0089] The comprehensive monitoring module realizes the monitoring strategy of power exchange power through comprehensive management and monitoring of the wind power monitoring module, the photovoltaic power monitoring module, the biomass power plant power monitoring module, the biomass power plant low-voltage side power monitoring module, the charging and battery swapping station power monitoring module, and the electric hydrogen production power monitoring module, and provides support for the hydrogen, oxygen, and carbon dioxide storage and transportation state monitoring modules.

[0090] The comprehensive monitoring module realizes the monitoring strategy of hydrogen, oxygen, and carbon dioxide storage, transportation, and application through comprehensive management and monitoring of the No. 1 hydrogen monitoring module, the No. 2 hydrogen monitoring module, the No. 3 hydrogen monitoring module, the No. 1 oxygen monitoring module, the No. 2 oxygen monitoring module, the No. 3 oxygen monitoring module, the No. 1 carbon dioxide monitoring module, and the No. 2 carbon dioxide monitoring module.

[0091] The comprehensive monitoring module realizes the start-stop monitoring strategy of the electric hydrogen production equipment and the methanol synthesis system through comprehensive management and monitoring of the electric hydrogen production equipment and the methanol synthesis system.

[0092] The wind power generation system includes wind turbines, a booster unit connected in sequence.

[0093] The photovoltaic power generation system includes photovoltaic arrays, a booster unit connected in sequence.

[0094] The biomass power generation system includes biomass power generation units, a booster unit connected in sequence, and is equipped with a CO2 capture system.

[0095] The booster unit includes a booster transformer low-voltage bus, a booster transformer, and a booster transformer high-voltage bus connected in sequence.

[0096] In the embodiment, the power supply power source is composed of a wind power generation system, a photovoltaic power generation system, a biomass power plant power generation system, and a charging and battery swapping station. The wind power generation system, the photovoltaic power generation system, and the biomass power plant are the main power supply sources, and the charging and battery swapping station (in a discharging state) is an auxiliary peak regulation power supply source.

[0097] The comprehensive monitoring module is used to judge the electric hydrogen production system power P E and the wind power sending power PW , photovoltaic export power P P , biomass power plant export power P B , charging power P of the charging station C and discharging power P of the charging station L logical relationship and the hydrogen production standard volume V EH reported by the hydrogen production equipment to the integrated monitoring module O-H , hydrogen pipeline standard volume V H1 , hydrogen storage equipment rated standard volume V H , hydrogen storage pipeline standard volume V H2 , hydrogen supply pipeline standard volume V H3 and methanol synthesis system hydrogen rated standard volume V M-H logical relationship and the oxygen production standard volume V EO reported by the hydrogen production equipment to the integrated monitoring module O2 , oxygen storage pipeline standard volume V O , oxygen storage equipment rated standard volume V M-C logical relationship and the carbon dioxide rated standard volume V C1 reported by the methanol synthesis system to the integrated monitoring module C , carbon dioxide pipeline standard volume V C2 , carbon dioxide storage equipment rated standard volume V W , carbon dioxide supply pipeline standard volume V

[0098] System initial start-up phase:

[0099] The total control module issues an instruction to the hydrogen production equipment to start the hydrogen production equipment, and simultaneously issues an instruction to the hydrogen production power monitoring module to put into operation the power export line, and supplies the power collected by the power collection bus to the hydrogen production equipment;

[0100] When P W +P P +P B ≤P E , the integrated monitoring module issues an instruction to the No. 1 hydrogen monitoring module and the No. 2 hydrogen monitoring module to start the hydrogen storage pipeline and the hydrogen supply pipeline, and transports hydrogen to the methanol synthesis system, and issues an instruction to the No. 1 carbon dioxide monitoring module and the No. 2 carbon dioxide monitoring module to start the carbon dioxide pipeline and the carbon dioxide supply pipeline, and transports carbon dioxide to the methanol synthesis system, and the methanol synthesis system synthesizes methanol, and simultaneously issues an instruction to the No. 1 oxygen monitoring module and the No. 2 oxygen monitoring module to start the oxygen storage pipeline and the oxygen supply pipeline, and transports oxygen to the biomass power generation system, and improves the efficiency of the biomass power generation system; when V H2 >V M-HAt that time, the integrated monitoring module sent an instruction to the No. 2 hydrogen consumption monitoring module to reduce the hydrogen supply capacity of the hydrogen pipeline and ensure V H2 =V M-H The hydrogen storage equipment was activated to begin hydrogen storage, and the integrated monitoring module sent a command to the No. 2 oxygen consumption monitoring module to shut down the oxygen supply pipeline and activate the oxygen storage equipment to begin oxygen storage; when V C2 >V M-C At that time, the integrated monitoring module sent a command to the No. 2 carbon dioxide monitoring module to reduce the carbon dioxide supply capacity of the carbon dioxide pipeline, ensuring V C2 =V M-C And start the carbon dioxide storage equipment to begin storing carbon dioxide; when V H1 >V H At that time, the integrated monitoring module sends a command to the No. 1 hydrogen consumption monitoring module to shut down the hydrogen storage pipeline, and simultaneously sends a command to the No. 3 hydrogen consumption monitoring module to start the hydrogen transmission pipeline and supply hydrogen to the external hydrogen consumption system; when V O1 >V O At that time, the integrated monitoring module sends a command to the No. 1 oxygen consumption monitoring module to close the oxygen storage pipeline, and simultaneously sends a command to the No. 3 oxygen consumption monitoring module to start the oxygen delivery pipeline and supply oxygen to the external oxygen consumption system; when V C1 >V C At that time, the integrated monitoring module sends a command to the No. 1 carbon dioxide monitoring module to shut down the carbon dioxide supply pipeline; when V H3 >V O-H At that time, the integrated monitoring module sends an instruction to the No. 3 hydrogen consumption monitoring module to close the hydrogen transmission pipeline and stop supplying hydrogen to the external hydrogen consumption system. Simultaneously, the integrated monitoring module transmits information to the electro-hydrogen production power monitoring module, the power transmission line is taken out of operation, the power collection bus stops supplying power to the electro-hydrogen production equipment, and the integrated monitoring module transmits information to the charging and battery swapping station power monitoring module, the power exchange line is put into operation, and the power collected by the power collection bus is supplied to the charging and battery swapping station; when P W +P P +P B >P C At that time, the integrated monitoring module transmits information to the wind power monitoring module, photovoltaic power monitoring module, and biomass power monitoring module to reduce output until P... W +P P +P B ≤P C ;

[0101] After supplying power to the charging and battery swapping station:

[0102] When P E <P W +P P +P B ≤P E +P CWhen P

[0103] When P W +P P +P B >P E +P C , the power collected by the power collection bus is simultaneously supplied to the electricity hydrogen production equipment and the charging and swapping station, the low-voltage side of the biomass power plant supplies power to the methanol synthesis system, the synchronous comprehensive monitoring module transmits information to the wind power monitoring module, the photovoltaic power monitoring module and the biomass power plant power monitoring module, and the output is reduced until P W +P P +P B ≤P E +P C .

[0104] When the hydrogen storage equipment is saturated, the electricity hydrogen production equipment stops delivering hydrogen to the hydrogen storage equipment:

[0105] When P C <P W +P P +P B ≤P E +P C , the power collection bus supplies power to the charging and swapping station and the electricity hydrogen production equipment, the low-voltage side of the biomass power plant supplies power to the methanol synthesis system, the electricity hydrogen production equipment delivers hydrogen to the external hydrogen system through the hydrogen delivery pipeline and delivers oxygen to the external oxygen system through the oxygen delivery pipeline; when V H3 >V O-H , the comprehensive monitoring module issues an instruction to the No. 3 hydrogen monitoring module to close the hydrogen delivery pipeline and stop delivering hydrogen to the external hydrogen system, issues an instruction to the No. 3 oxygen monitoring module to close the oxygen delivery pipeline and stop delivering oxygen to the external oxygen system, and simultaneously transmits information to the wind power monitoring module, the photovoltaic power monitoring module and the biomass power plant power monitoring module to reduce the output until P W +P P +P B =P C .

[0106] When P E ≤P W +P P +P B ≤P E +P C , the power collection bus supplies power to the charging and swapping station and the electricity hydrogen production equipment, the low-voltage side of the biomass power plant supplies power to the methanol synthesis system, the electricity hydrogen production equipment delivers hydrogen to the external hydrogen system through the hydrogen delivery pipeline and delivers oxygen to the external oxygen system through the oxygen delivery pipeline; when V H3 >VO-H At that time, the integrated monitoring module sends an instruction to the No. 3 hydrogen consumption monitoring module to close the hydrogen pipeline and stop supplying hydrogen to the external hydrogen consumption system. It also sends an instruction to the No. 3 oxygen consumption monitoring module to close the oxygen pipeline and stop supplying oxygen to the external oxygen consumption system. Simultaneously, it transmits information to the wind power monitoring module, photovoltaic power monitoring module, and biomass power monitoring module to reduce output until P... W +P P +P B =P C ;

[0107] When P W +P P +P B <P E When the charging and battery swapping station has sufficient power, the integrated monitoring module sends a command to the power monitoring module of the charging and battery swapping station, causing the station to switch from charging to discharging. The discharged power from the charging and battery swapping station is collected by the power exchange line to the power collection bus. The power collection bus collects power from the wind power generation system, the photovoltaic power generation system, and the charging and battery swapping station, and then sends it to the hydrogen production system, ensuring P W +P P +P B +P L ≤P E It provides the electricity needed for external hydrogen production systems.

[0108] Figure 2 The off-grid system for producing green hydrogen alcohol based on the combined use of wind, solar, and biomass, which is connected to a hydrogen refueling station, as disclosed in this utility model, clearly defines the external hydrogen consumption system as the hydrogen refueling station.

[0109] This invention proposes an off-grid system for the combined production of green hydrogen alcohols from wind, solar, and biomass, which has the following technical advantages:

[0110] By establishing an off-grid system for the combined production of green hydrogen alcohols from wind, solar, and biomass, we can achieve the coupling and synergy of renewable energy power generation and green hydrogen alcohol production, thus ensuring the greening of the entire hydrogen-based energy industry chain.

[0111] By monitoring the discharge power of wind power generation systems, photovoltaic power generation systems, biomass power generation systems, and charging and swapping stations, the electricity generated by renewable energy is used to produce hydrogen alcohol. By rationally adjusting and optimizing the combination of various power sources, the clean and green electricity production of hydrogen alcohol with zero emissions is achieved throughout the entire process.

[0112] Hydrogen is supplied to the methanol synthesis system through hydrogen storage pipelines and hydrogen supply pipelines, by electric hydrogen production equipment and hydrogen storage equipment; carbon dioxide is supplied to the methanol synthesis system through carbon dioxide transmission pipelines and carbon dioxide supply pipelines, by biomass power generation system and carbon dioxide storage equipment; and hydrogen is supplied to external hydrogen-using systems through hydrogen transmission pipelines, ensuring the degree of hydrogen-based greening.

[0113] The oxygen storage pipeline and the oxygen supply pipeline are used to supplement oxygen for the biomass power generation system from the electric hydrogen production equipment and the oxygen storage equipment, and the power generation efficiency of the biomass power generation system is improved;

[0114] Through the comprehensive monitoring module, the power monitoring module, the hydrogen monitoring module and the carbon dioxide monitoring module, the joint monitoring strategy is implemented on the transmission line, the power exchange line, the power supply line, the electric hydrogen production equipment, the hydrogen storage equipment, the carbon dioxide storage equipment, the methanol synthesis system, the charging and changing station, the hydrogen pipeline, the hydrogen supply pipeline, the hydrogen storage pipeline, the carbon dioxide pipeline and the carbon dioxide supply pipeline, so that the renewable energy coupling and collaborative utilization are improved, and the zero carbonization of the green hydrogen-based energy is realized.

[0115] Based on the above embodiments, according to the renewable resource condition, the methanol synthesis system and external hydrogen system demand condition, the charging and changing station discharge demand condition, the power supply side power output condition and other aspects, the off-grid system for producing green hydrogen alcohol based on wind, light and biomass is used, the wind power generation system, the photovoltaic power generation system, the biomass power generation system, the transmission line, the power exchange line, the power supply line, the electric hydrogen production equipment, the hydrogen storage equipment, the methanol synthesis system, the carbon dioxide storage equipment, the hydrogen pipeline, the hydrogen supply pipeline, the hydrogen pipeline, the carbon dioxide pipeline, the carbon dioxide supply pipeline, the charging and changing station, the power monitoring module, the hydrogen monitoring module and the carbon dioxide monitoring module are optimized, adjusted and combined, the wind power, the photovoltaic and the biomass coupling and collaborative development are realized, and the hydrogen-based energy full industry chain greenization is ensured.

Claims

1. A kind of off-grid system of green hydrogen alcohol combined with wind, light, biomass, it is characterized in that: The wind power generation system, the photovoltaic power generation system, the biomass power generation system, the electric hydrogen production device, the methanol synthesis system, the hydrogen storage device, the oxygen storage device, the carbon dioxide storage device, the charging and swapping station, and the power collection bus are connected through the wind power transmission line, the photovoltaic power transmission line, the biomass power plant transmission line, the hydrogen production power supply line, the power exchange line, the hydrogen transmission pipeline, the oxygen transmission pipeline, the hydrogen storage pipeline, the oxygen storage pipeline, the hydrogen supply pipeline, the oxygen supply pipeline, the carbon dioxide supply pipeline, and the carbon dioxide storage pipeline. The wind power generation system is connected to the power collection bus through the wind power transmission line. The photovoltaic power generation system is connected to the power collection bus through the photovoltaic power transmission line. The biomass power generation system is connected to the power collection bus through the biomass power plant transmission line. The electric hydrogen production device is connected to the power collection bus through the hydrogen production power supply line. The charging and swapping station is connected to the power collection bus through the power exchange line. The electric hydrogen production device is connected to the external hydrogen system through the hydrogen transmission pipeline. The electric hydrogen production device is connected to the external oxygen system through the oxygen transmission pipeline. The electric hydrogen production device is connected to the hydrogen storage device through the hydrogen storage pipeline. The electric hydrogen production device is connected to the oxygen storage device through the oxygen storage pipeline. The hydrogen storage device is connected to the methanol synthesis system through the hydrogen supply pipeline. The oxygen storage device is connected to the biomass power generation system through the oxygen supply pipeline. The biomass power generation system is connected to the methanol synthesis system through the methanol synthesis system power supply line. The biomass power generation system is connected to the carbon dioxide storage device through the carbon dioxide transmission pipeline. The carbon dioxide storage device is connected to the methanol synthesis system through the carbon dioxide supply pipeline.

2. The off-grid system for producing green hydrogen alcohol based on wind, light and biomass combination according to claim 1, characterized in that: The wind power sending line is provided with a wind power monitoring module for obtaining wind power supply power P W ; The photovoltaic power supply line is provided with a photovoltaic power monitoring module for obtaining photovoltaic power P P ; The biomass power plant power monitoring module is arranged on the biomass power plant outgoing line, and is used for obtaining the power P supplied by the biomass generator set B ; The power transmission line is provided with an electric hydrogen production power monitoring module for obtaining the electric power P used by the electric hydrogen production system E ; The power monitoring module is arranged on the electric exchange line to obtain the charging power P of the charging station C and the discharging power P of the charging station L ; A biomass power plant low-voltage side power monitoring module is arranged on the methanol synthesis system power supply line to switch the methanol synthesis system power supply line. The hydrogen storage pipeline is provided with a No. 1 hydrogen monitoring module for obtaining the standard volume V H1 of the hydrogen storage pipeline H ; The hydrogen supply pipeline is provided with a No. 2 hydrogen monitoring module for obtaining the standard volume V H2 of the hydrogen supply pipeline M-H ; The hydrogen delivery pipeline is provided with a No. 3 hydrogen monitoring module for obtaining the standard volume V H3 of the hydrogen delivery pipeline O-H ; The oxygen storage pipeline is provided with a No. 1 oxygen monitoring module for obtaining the standard volume V O1 of the oxygen storage pipeline O ; A second oxygen monitoring module is arranged on the oxygen supply pipeline. A third oxygen monitoring module is arranged on the oxygen transmission pipeline. The carbon dioxide pipeline is provided with a first carbon dioxide monitoring module for obtaining the standard volume V C1 of the carbon dioxide pipeline C ; the rated standard volume of the carbon dioxide storage device is V The carbon dioxide supply pipeline is provided with a second carbon dioxide monitoring module for obtaining the standard volume V C2 of the carbon dioxide supply pipeline M-C ; The wind power monitoring module, the photovoltaic power monitoring module, the biomass power plant power monitoring module, the charging and swapping station power monitoring module, the electric hydrogen power monitoring module, the biomass power plant low-voltage side power monitoring module, the first hydrogen monitoring module, the second hydrogen monitoring module, the third hydrogen monitoring module, the first oxygen monitoring module, the second oxygen monitoring module, the third oxygen monitoring module, the first carbon dioxide monitoring module, the second carbon dioxide monitoring module, and the electric hydrogen device connection comprehensive monitoring module are connected. The comprehensive monitoring module is used for judging the electric hydrogen production system electric power P E The logical relationship between the wind power sending power P W , the photovoltaic sending power P P , the biomass power plant sending power P B , the charging power P C of the charging and discharging station and the discharging power P L of the charging and discharging station and the logical relationship between the electric hydrogen production equipment hydrogen production standard volume V EH reported to the comprehensive monitoring module by the electric hydrogen production equipment and the external hydrogen system standard volume V O-H , the hydrogen pipeline standard volume V H1 , the hydrogen storage equipment rated standard volume V H , the hydrogen storage pipeline standard volume V H2 , the hydrogen supply pipeline standard volume V H3 and the hydrogen rated standard volume V M-H of the methanol synthesis system and the logical relationship between the electric hydrogen production equipment oxygen production standard volume V EO reported to the comprehensive monitoring module by the electric hydrogen production equipment and the oxygen storage pipeline standard volume V O2 , the oxygen storage equipment rated standard volume V O and the logical relationship between the carbon dioxide rated standard volume V M-C of the methanol synthesis system reported to the comprehensive monitoring module by the methanol synthesis system and the carbon dioxide pipeline standard volume V C1 , the carbon dioxide storage equipment rated standard volume V C , the carbon dioxide supply pipeline standard volume V C2 and sending instructions; The comprehensive monitoring module is used to determine logical relationships and send instructions, specifically as follows: 1) System initial start-up stage: The comprehensive monitoring module sends instructions to the electric hydrogen production device and the methanol synthesis system to start the electric hydrogen production device and the methanol synthesis system, simultaneously sends instructions to the electric hydrogen power monitoring module to input the hydrogen production power supply line, supplies power collected by the power collection bus to the electric hydrogen production device, and simultaneously sends instructions to the biomass power plant low-voltage side power monitoring module to input the methanol synthesis system power supply line and supply low-voltage side power of the biomass power plant to the methanol synthesis system; When P W + P P + P B ≤ P E , the integrated monitoring module sends instructions to the No. 1 hydrogen monitoring module and the No. 2 hydrogen monitoring module to open the hydrogen storage pipeline and the hydrogen supply pipeline, to deliver hydrogen to the methanol synthesis system, to the No. 1 carbon dioxide monitoring module and the No. 2 carbon dioxide monitoring module to open the carbon dioxide hydrogen delivery pipeline and the carbon dioxide hydrogen supply pipeline, to deliver carbon dioxide to the methanol synthesis system, to the methanol synthesis system to synthesize methanol, and to the No. 1 oxygen monitoring module and the No. 2 oxygen monitoring module to send instructions to open the oxygen storage pipeline and the oxygen supply pipeline, to deliver oxygen to the biomass power generation system, to improve the efficiency of the biomass power generation system; when V H2 > V M-H , the integrated monitoring module sends instructions to the No. 2 hydrogen monitoring module to reduce the hydrogen delivery capacity of the hydrogen supply pipeline, to ensure that V H2 = V M-H , and to start the hydrogen storage device to begin hydrogen storage, and to the No. 2 oxygen monitoring module to send instructions to close the oxygen supply pipeline and to start the oxygen storage device to begin oxygen storage; when V C2 > V M-C , the integrated monitoring module sends instructions to the No. 2 carbon dioxide monitoring module to reduce the carbon dioxide delivery capacity of the carbon dioxide supply pipeline, to ensure that V C2 = V M-C , and to start the carbon dioxide storage device to begin carbon dioxide storage; when V H1 > V H , the integrated monitoring module sends instructions to the No. 1 hydrogen monitoring module to close the hydrogen storage pipeline, and simultaneously sends instructions to the No. 3 hydrogen monitoring module to start the hydrogen delivery pipeline to deliver hydrogen to the external hydrogen system; when V O1 > V O , the integrated monitoring module sends instructions to the No. 1 oxygen monitoring module to close the oxygen storage pipeline, and simultaneously sends instructions to the No. 3 oxygen monitoring module to start the oxygen delivery pipeline to deliver oxygen to the external oxygen system; when V C1 > V C , the integrated monitoring module sends instructions to the No. 1 carbon dioxide monitoring module to close the carbon dioxide delivery pipeline; when V H3 > V O-H , the integrated monitoring module sends instructions to the No. 3 hydrogen monitoring module to close the hydrogen delivery pipeline and stop delivering hydrogen to the external hydrogen system, and the integrated monitoring module simultaneously sends information to the electric hydrogen power monitoring module, the power transmission line exits operation, the power collection bus no longer provides power to the electric hydrogen device, the integrated monitoring module sends information to the power charging station power monitoring module, the power exchange line is put into operation, and the power collected by the power collection bus is supplied to the power charging station; when P W + P P + P B > P C When, the integrated monitoring module passes information to the wind power monitoring module, the photovoltaic power monitoring module and the biomass power plant power monitoring module, reduces the output, until P W +P P +P B ≤P C ; 2) After power supply to the charging and swapping station: When P E When P W When P P When P B When P E When P C When P When P W +P P +P B >P E +P C , the power collected by the power collection bus supplies power to the hydrogen production equipment and the charging and swapping station at the same time, the low-voltage side of the biomass power plant supplies power to the methanol synthesis system, the synchronous comprehensive monitoring module transmits information to the wind power monitoring module, the photovoltaic power monitoring module and the biomass power plant power monitoring module, and the output is reduced until P W +P P +P B ≤P E +P C ; 3) When the hydrogen storage device is saturated and the electric hydrogen production device stops delivering hydrogen to the hydrogen storage device: When P C <P W +P P +P B ≤P E +P C , the power collection bus supplies power to the charging and hydrogen production station and the biomass power plant supplies power to the methanol synthesis system, the hydrogen production equipment transports hydrogen to the external hydrogen system through the hydrogen pipeline and transports oxygen to the external oxygen system through the oxygen pipeline; when V H3 >V O-H , the comprehensive monitoring module sends instructions to the No. 3 hydrogen monitoring module to close the hydrogen pipeline and stop transporting hydrogen to the external hydrogen system, sends instructions to the No. 3 oxygen monitoring module to close the oxygen pipeline and stop transporting oxygen to the external oxygen system, synchronously transmits information to the wind power monitoring module, the photovoltaic power monitoring module and the biomass power plant power monitoring module to reduce the output until P W +P P +P B =P C ; When P E ≤ P W + P P + P B ≤ P E + P C , the power collection bus supplies power to the charging and hydrogen production equipment, the low-voltage side of the biomass power plant supplies power to the methanol synthesis system, the hydrogen production equipment supplies hydrogen to the external hydrogen system through the hydrogen pipeline and supplies oxygen to the external oxygen system through the oxygen pipeline; when V H3 > V O-H , the comprehensive monitoring module sends instructions to the No. 3 hydrogen monitoring module to close the hydrogen pipeline and stop hydrogen supply to the external hydrogen system, sends instructions to the No. 3 oxygen monitoring module to close the oxygen pipeline and stop oxygen supply to the external oxygen system, synchronously transmits information to the wind power monitoring module, the photovoltaic power monitoring module and the biomass power plant power monitoring module to reduce output until P W + P P + P B = P C ; When P W +P P +P B <P E , and the power of the charging and changing station is sufficient, the integrated monitoring module sends an instruction to the charging and changing station power monitoring module, the charging and changing station is converted from the charging state to the discharging state, the discharging power of the charging and changing station is collected to the power collection bus through the power exchange line, after the power collection bus collects the power of the wind power generation system, the photovoltaic power generation system and the charging and changing station, it is sent to the hydrogen production system, and it is guaranteed that P W +P P +P B +P L ≤P E , the power required by the external hydrogen production system is provided.

3. The off-grid system for producing green hydrogen alcohol based on wind, light and biomass combination according to claim 1, characterized in that, The wind power generation system comprises a fan and a booster unit connected in sequence; the photovoltaic power generation system comprises a photovoltaic matrix and a booster unit connected in sequence; the biomass power generation system comprises a biomass power generation unit and a booster unit connected in sequence, and is equipped with a CO2 capture system; the booster unit comprises a booster transformer low-voltage bus, a booster transformer and a booster transformer high-voltage bus connected in sequence.

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