CN115305501A - Hydrogen production control method, device, equipment and medium based on wind power integration - Google Patents

Hydrogen production control method, device, equipment and medium based on wind power integration Download PDF

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CN115305501A
CN115305501A CN202210787154.4A CN202210787154A CN115305501A CN 115305501 A CN115305501 A CN 115305501A CN 202210787154 A CN202210787154 A CN 202210787154A CN 115305501 A CN115305501 A CN 115305501A
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hydrogen production
wind power
wind
electrolytic cell
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王昌照
陈鸿琳
余浩
应雨恒
刘新苗
龚贤夫
刘文昕
钟治垚
艾小猛
方家琨
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Guangdong Power Grid Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C25B15/021—Process control or regulation of heating or cooling
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/67—Heating or cooling means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • 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
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
    • 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
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    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/133—Renewable energy sources, e.g. sunlight

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  • Automation & Control Theory (AREA)
  • Inorganic Chemistry (AREA)
  • Power Engineering (AREA)
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Abstract

The invention discloses a hydrogen production control method, a device, equipment and a medium based on wind power integration, wherein a hydrogen production control strategy of a wind power integration hydrogen production system is generated by acquiring system parameters of the wind power integration hydrogen production system and utilizing a preset electric heating coupling mechanism according to the system parameters, the hydrogen production control strategy comprises a target wind speed condition and a target temperature condition, and then based on the hydrogen production control strategy, when the current wind speed meets the target wind speed condition, a wind power generation module is controlled to supply power to a hydrogen production module, and until the temperature of an electrolytic cell in the hydrogen production module meets the target temperature condition, the electrolytic cell is started to produce hydrogen, so that the operation characteristics of each link in the wind power integration hydrogen production system are determined, the control strategy of the wind power production technology is perfected, and the electrolytic efficiency, the yield and other electrolytic performances of the electrolytic cell are improved.

Description

Hydrogen production control method, device, equipment and medium based on wind power integration
Technical Field
The invention relates to the technical field of power grid energy storage, in particular to a hydrogen production control method, a device, equipment and a medium based on wind power integration.
Background
The offshore wind power technology utilizes a wind driven generator to convert offshore wind energy into electric energy, the electric energy is transmitted to land through a high-voltage transmission line and is merged into a power grid or consumed on the spot through a series of electric power system equipment, and the offshore wind power technology has the characteristics of sufficient offshore wind energy and capability of being far away from the land and has wide developable space. However, with the expansion of the power generation scale, the influence of the fluctuation of renewable energy on offshore wind power grid connection is larger and larger, so that the electric energy quality and the power supply stability are poorer, and the impact on the power grid caused by wind power grid connection is caused.
At present, in order to effectively relieve the fluctuation of wind power output, the related technology utilizes the offshore wind power hydrogen production technology based on an electrolytic bath and a hydrogen storage tank to absorb redundant wind power and reduce wind power grid-connected impact. However, the control strategy of the current technology is imperfect, which basically treats the electrolyzer as a pure resistive or resistive-capacitive load, without considering the wind power output condition and the complicated electrochemical, heat flow and liquid flow processes in the electrolyzer. Resulting in the inability to effectively utilize offshore wind power resources.
Disclosure of Invention
The invention provides a hydrogen production control method, device, equipment and medium based on wind power integration, and aims to solve the technical problem that the current offshore wind power hydrogen production technology has an imperfect control strategy.
In order to solve the technical problem, in a first aspect, the invention provides a hydrogen production control method based on wind power integration, which comprises the following steps:
the method comprises the steps of obtaining system parameters of a wind power grid-connected hydrogen production system, wherein the system parameters comprise fan parameters, generator parameters, power grid parameters and electrolytic bath parameters, and the wind power grid-connected hydrogen production system comprises a wind power generation module and a hydrogen production module;
generating a hydrogen production control strategy of the wind power grid-connected hydrogen production system according to the system parameters by using a preset electric-thermal coupling mechanism, wherein the hydrogen production control strategy comprises a target wind speed condition and a target temperature condition;
and based on the hydrogen production control strategy, when the current wind speed meets the target wind speed condition, controlling the wind power generation module to supply power to the hydrogen production module, and starting the electrolytic cell to produce hydrogen until the temperature of the electrolytic cell in the hydrogen production module meets the target temperature condition.
Preferably, the controlling, based on the hydrogen production control strategy, the wind power generation module to supply power to the hydrogen production module when the current wind speed meets the target wind speed condition, and starting the electrolytic cell to produce hydrogen until the temperature of the electrolytic cell in the hydrogen production module meets the target temperature condition includes:
when the current wind speed is greater than an upper threshold value of a target wind speed or the current wind speed is less than a lower threshold value of the target wind speed, if the temperature of the electrolytic cell does not meet the target temperature condition, controlling the wind power generation module to supply power to a heater in the hydrogen production module so that the heater heats the electrolytic cell;
and when the temperature of the electrolytic cell reaches the target temperature condition, stopping supplying power to the heater, starting the electrolytic cell, and supplying power to the electrolytic cell so as to ensure that the electrolytic cell performs electrolytic hydrogen production.
Preferably, after the power supply to the heater is stopped, the electrolytic cell is started and power is supplied to the electrolytic cell to electrolyze the electrolytic cell to produce hydrogen when the temperature of the electrolytic cell reaches a target temperature condition, the method further includes:
supplying power to a cooler in the hydrogen production module to maintain the temperature of the electrolyzer to meet a target temperature condition.
Preferably, the method further comprises:
and based on the hydrogen production control strategy, if the current wind speed is between the lower threshold value of the target wind speed and the upper threshold value of the target wind speed, controlling the wind power generation module to output power to the grid-connected wind power system.
Preferably, the generating of the hydrogen production control strategy of the wind power grid-connected hydrogen production system according to the system parameters by using a preset electric-thermal coupling mechanism comprises:
generating a target temperature condition corresponding to the electrolytic bath module according to the parameters of the electrolytic bath by utilizing a preset electric heating coupling mechanism;
generating the target wind speed condition of the wind power generation module according to a fan parameter, the generator parameter and the power grid parameter by using a preset wind power conversion mechanism;
and generating a hydrogen production control strategy of the wind power grid-connected hydrogen production system according to the target temperature condition and the target wind speed condition.
Preferably, the electrothermal coupling mechanism includes an electrothermal coupling relationship, and the generating, by using a preset electrothermal coupling mechanism, a target temperature condition corresponding to the electrolytic cell module according to the electrolytic cell parameter includes:
and calculating a corresponding target temperature condition of the electrolytic cell module when the electrolytic cell module reaches the preset optimal electrolytic performance based on the electrolytic cell parameters by utilizing the electric-thermal coupling relation of the electrolytic cell module.
Preferably, the wind power conversion mechanism includes a conversion relationship between wind energy and electric energy, and the generating the target wind speed condition of the wind power generation module according to a fan parameter, the generator parameter and the grid parameter by using a preset wind power conversion mechanism includes:
and calculating a target wind speed condition corresponding to the wind power generation module when the rated power of the power grid is reached according to the fan parameter and the generator parameter by using the conversion relation between the wind energy and the electric energy.
In a second aspect, the invention provides a hydrogen production control device based on wind power integration, comprising:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring system parameters of a wind power grid-connected hydrogen production system, the system parameters comprise a fan parameter, a generator parameter, a power grid parameter and an electrolytic bath parameter, and the wind power grid-connected hydrogen production system comprises a wind power generation module and a hydrogen production module;
the generating unit is used for generating a hydrogen production control strategy of the wind power grid-connected hydrogen production system according to the system parameters by utilizing a preset electric-thermal coupling mechanism, wherein the hydrogen production control strategy comprises a target wind speed condition and a target temperature condition;
and the control unit is used for controlling the wind power generation module to supply power to the hydrogen production module when the current wind speed meets the target wind speed condition based on the hydrogen production control strategy, and starting the electrolytic cell to produce hydrogen until the temperature of the electrolytic cell in the hydrogen production module meets the target temperature condition.
In a third aspect, the present invention provides an electronic device, comprising a processor and a memory, wherein the memory is used for storing a computer program, and the computer program is executed by the processor to implement the wind power grid-connected hydrogen production control method according to the first aspect.
In a fourth aspect, the present invention provides a computer-readable storage medium storing a computer program, which when executed by a processor, implements the wind power grid-connected hydrogen production control method according to the first aspect.
Compared with the prior art, the invention has the following beneficial effects:
according to the method, the system parameters of the wind power grid-connected hydrogen production system are obtained, a preset electric heating coupling mechanism is utilized, and a hydrogen production control strategy of the wind power grid-connected hydrogen production system is generated according to the system parameters, wherein the hydrogen production control strategy comprises a target wind speed condition and a target temperature condition so as to consider the influence of wind speed fluctuation and temperature on hydrogen production performance, so that the operation characteristics of each link in the wind power grid-connected hydrogen production system are determined, the wind speed fluctuation of wind power grid connection can be more reasonably utilized, and redundant electric energy of wind power grid connection is distributed; and based on the hydrogen production control strategy, when the current wind speed meets the target wind speed condition, controlling the wind power generation module to supply power to the hydrogen production module, and starting the electrolytic cell to produce hydrogen until the temperature of the electrolytic cell in the hydrogen production module meets the target temperature condition, so as to perfect the control strategy of the wind power hydrogen production technology, improve the electrolytic efficiency, the yield and other electrolytic performances of the electrolytic cell on the basis of ensuring that the whole system is in safe and good operation, and enable the system to absorb wind power output as much as possible and convert the wind power output into hydrogen energy as much as possible.
Drawings
FIG. 1 is a schematic flow diagram of a wind power integration hydrogen production control method according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a wind power integration hydrogen production system shown in the embodiment of the invention;
FIG. 3 is a schematic structural diagram of a wind power integration hydrogen production control device according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method according to an embodiment of the present invention. The method of the embodiment of the invention can be applied to computer equipment, including but not limited to smart phones, notebook computers, tablet computers, desktop computers, physical servers, cloud servers and other equipment. As shown in fig. 1, the method of the present embodiment includes steps S101 to S103, which are detailed as follows:
step S101, system parameters of the wind power grid-connected hydrogen production system are obtained, wherein the system parameters comprise fan parameters, generator parameters, power grid parameters and electrolytic bath parameters, and the wind power grid-connected hydrogen production system comprises a wind power generation module and a hydrogen production module.
In this step, as shown in fig. 2, the wind power generation module includes a wind turbine and a permanent magnet synchronous generator, and the hydrogen production module includes an electrolyzer, a heater, and a cooler. The wind power grid-connected hydrogen production system further comprises a power grid, a transmission line, a transformer and a rectification filter module.
Optionally, the present embodiment considers that the power grid side has sufficient capacity and can provide the required reactive compensation, and the present module mainly functions to determine the power grid side voltage level and the rated voltage of each transmission line segment, and further determine the parameters of the converter station and the transformer on the transmission line. In the model, the voltage grade of the power grid side can be taken as 110KV, the connecting transmission line is converted into 35KV through a No. 1 transformer, then the voltage is converted into 600V through a No. 2 transformer, the point is taken as a rectifying module, and the power grid point and the generator grid point are connected, the power generation side and the rectifying side at the point can respectively use the No. 3 transformer and the No. 4 transformer to convert the voltage, and if the No. 4 transformer is used for reducing the voltage to 220V.
Optionally, the module converts alternating current from offshore wind power generation into direct current to supply to an electrolytic cell, and the main structure of the module consists of a rectifier and a filter. The rectifier mainly adopts a thyristor rectification circuit controlled by 6-pulse PWM, the input end of the rectifier is connected with a power grid point connected with the rectification module, and the output end of the rectifier is connected with the filtering module. The filter mainly uses an LC filter circuit, where the parameters can be set to 2mH and 50mF.
And S102, generating a hydrogen production control strategy of the wind power grid-connected hydrogen production system according to the system parameters by using a preset electric-thermal coupling mechanism, wherein the hydrogen production control strategy comprises a target wind speed condition and a target temperature condition.
In this step, the generating a hydrogen production control strategy of the wind power grid-connected hydrogen production system according to the system parameters by using a preset electric-thermal coupling mechanism includes:
generating a target temperature condition corresponding to the electrolytic bath module according to the electrolytic bath parameters by using a preset electric-thermal coupling mechanism;
generating the target wind speed condition of the wind power generation module according to a fan parameter, the generator parameter and the power grid parameter by using a preset wind power conversion mechanism;
and generating a hydrogen production control strategy of the wind power grid-connected hydrogen production system according to the target temperature condition and the target wind speed condition.
In this embodiment, the electric-thermal coupling mechanism includes an electric-thermal coupling relationship, and the wind power conversion mechanism includes a conversion relationship between wind energy and electric energy.
Optionally, the generating, by using a preset electrothermal coupling mechanism, a target temperature condition corresponding to the electrolytic cell module according to the electrolytic cell parameter includes:
and calculating a corresponding target temperature condition of the electrolytic cell module when the electrolytic cell module reaches the preset optimal electrolytic performance based on the electrolytic cell parameters by utilizing the electric-thermal coupling relation of the electrolytic cell module.
In this embodiment, the electrolyzer is the core module of the entire model, and is the place where electrical energy is converted into hydrogen energy. The electrolytic cell has the main functions of absorbing redundant wind power, reducing wind power grid-connected impact under the condition of wind speed fluctuation and improving stability. The main parameters of the electrolytic cell are voltage, current and temperature, wherein the coupling relation is as follows:
U cell ＝E rev +η act.a +η act.c +η ohm ；
Figure RE-GDA0003851980940000061
E rev.0 | T＝298 . 15K ＝1.23V；
Figure RE-GDA0003851980940000062
Figure RE-GDA0003851980940000063
j 0c ＝1.7A/m 2 ；
η ohm ＝IR electrolyzer 。
in the formula of U cell Is the voltage across the cell, in units of V; e rev The water electrolysis hydrogen production reaction is endothermic and can not be carried out spontaneously due to reversible voltage, and voltage is required to be applied to generate the hydrogen, so that the minimum voltage required by the hydrogen production reaction is called reversible voltage; eta act.a And η act.c The polarization overvoltage of the anode and the polarization overvoltage of the cathode are respectively characterized by energy provided by electrode reaction charge transfer, and the numerical value of the polarization overvoltage is in great relation with a catalyst on the surface of the electrode; eta ohm The method is characterized in that the method is ohmic overvoltage and represents voltage drop caused by various factors (namely equivalent resistance of an electrolytic cell) for blocking the flow of electrons in the electrolytic cell, and the numerical value of the voltage drop is in direct proportion to the current of an electrode; t is the temperature of the electrolytic cell;
Figure RE-GDA0003851980940000064
the reversible voltage temperature coefficient can be 0.2456 mV/K; i is total current of the electrolytic cell; a is the area of the electrode plate of the electrolytic cell, and the unit is m 2 ；j 0a And j 0c Exchange current densities for the anode and cathode, respectively; alpha is the electrode exchange coefficient, and the anode and the cathode are unified to be 0.5; f is a Faraday constant; r is a molar gas constant; a is 0a And b 0a The electrode exchange current density coefficients are 866.4A/m2 and 375K respectively; r electrolyzer The equivalent resistance of the electrolytic cell is determined by the properties of the electrolytic cell.
Concentration overvoltages, which are characteristic of voltage drops due to product concentration and material convective diffusion, are ignored here, and in alkaline cells, are small and negligible compared to polarization overvoltages and ohmic overvoltages.
In addition, in order to maintain the temperature of the electrolytic cell module, a cooler and a heater are provided, the hydrogen production reaction by water electrolysis is an endothermic reaction, but when the voltage is high, the ohmic overvoltage is large, and a large amount of heat is generated, so that the cooler and the heater are required, and the power of the cooler and the heater can be adjusted according to the temperature.
Optionally, the generating the target wind speed condition of the wind power generation module according to a fan parameter, a generator parameter and a grid parameter by using a preset wind power conversion mechanism includes:
and calculating a target wind speed condition corresponding to the wind power generation module when the rated power of the power grid is reached according to the fan parameter and the generator parameter by using the conversion relation between the wind energy and the electric energy.
In this embodiment, the wind power conversion mechanism includes a wind turbine converting wind energy into mechanical energy, and a generator converting mechanical energy into electrical energy.
The wind turbine converts wind energy into mechanical energy and transmits the mechanical energy to the generator, and the absorbed power of the wind turbine is as follows:
Figure RE-GDA0003851980940000071
P WT ＝C p P Air ＝T m ω w ；
wherein P is Air The unit of the wind power output by the sea wind after blowing to the swept surface of the wind turbine blade is W; p is WT The unit is the input power of the wind turbine, namely the power for converting the absorbed wind energy into mechanical energy; rho is air density, and rho =1.293kg/m 3 (ii) a R is the radius of the wind turbine and is in m; v is the current wind speed, and the unit is m/s; t is m The unit of the mechanical torque output by the wind turbine is N.m; omega w Is the radius of the wind turbine; c p In order to reduce the multiple, i.e. the power factor, the maximum of which is defined by the Betz limit, it is not possible to exceed 59.3%, C p The values of (d) are related to the pitch angle and tip speed ratio:
Figure RE-GDA0003851980940000072
Figure RE-GDA0003851980940000073
Figure RE-GDA0003851980940000081
wherein λ is the tip speed ratio; beta is the pitch angle of the fan, and the unit is radian; each coefficient is determined by the characteristics of the wind turbine itself, where c may be taken 1 ＝0.5176、c 2 ＝116、c 3 ＝-0.4、c 4 ＝-5、c 5 ＝-21、 c 6 ＝0.0068。
This model adopts direct drive formula fan, consequently does not have the gear box module, only needs consider the transmission shaft problem. The transmission shafting model mainly reflects the transmission process of mechanical energy, and the wind turbine and the permanent magnet synchronous generator are assumed to be equivalent to a mass block, and the torsion of the blades and the torsion of the transmission shaft are not considered, so that the rotating speeds of the wind turbine and the generator are equal, namely:
ω w ＝ω g ；
wherein ω is g For the rotation speed of the generator, the motion equation of the equivalent mass block is shown as follows:
Figure RE-GDA0003851980940000082
wherein T is e Is the electromagnetic torque of the generator, and has the unit of N.m; c g For damping coefficient, it can be simplified to 0 here; j. the design is a square 0 Is the moment of inertia of the mass in k g ·m 2 。
The generator converts the mechanical energy transmitted by the wind turbine into electric energy, and the generator can be a permanent magnet synchronous generator:
ω e ＝pω g ；
Figure RE-GDA0003851980940000083
Figure RE-GDA0003851980940000084
T e ＝1.5p[(L d -L q )i d i q +i q λ 0 ]；
P e ＝Txω e ＝1.5p 2 [(L d -L q )i d i q +i q λ 0 ]ω g ；
wherein omega e Is the electrical angular frequency, p is the number of pole pairs of the rotor of the permanent magnet synchronous generator, L d And L q Stator d-axis and q-axis inductances, i, of permanent magnet synchronous generators, respectively d And i q D-and q-axis currents, u, of permanent magnet synchronous generators, respectively d And u q Respectively d-axis component and q-axis component of output voltage of the permanent magnet synchronous generator, R is stator resistance of the permanent magnet synchronous generator, and lambda is 0 For stator permanent magnet flux linkage, it is assumed here that the d-and q-axis inductances are equal, i.e. L d ＝L q = L, simplified to give the following formula:
Figure RE-GDA0003851980940000085
Figure RE-GDA0003851980940000091
T e ＝1.5pi q λ 0 ；
P e ＝T e ω e ＝1.5p 2 i q λ 0 ω g 。
and S103, controlling the wind power generation module to supply power to the hydrogen production module when the current wind speed meets the target wind speed condition based on the hydrogen production control strategy, and starting the electrolytic cell to produce hydrogen until the temperature of the electrolytic cell in the hydrogen production module meets the target temperature condition.
In the step, the initial state of the model is stable offshore wind power grid connection under the stable wind speed, and the electrolytic cell module is in a shutdown state at the moment. When the wind speed is detected to rise, the electrolyzer module is started. One of the most important factors during start-up of the cell is temperature. The efficiency and productivity of the electrolysis process are temperature dependent, and the temperature and electrolysis efficiency are positively correlated with the productivity over the range of temperatures that the equipment can withstand. And the temperature ranges from room temperature to the working temperature with higher efficiency, and the required heating time is longer. The strategy during start-up is to preferentially distribute power to the heaters so that the cell reaches a higher operating temperature as quickly as possible.
In some embodiments, the controlling, based on the hydrogen production control strategy, the wind power generation module to supply power to the hydrogen production module when the current wind speed meets the target wind speed condition, and starting an electrolytic cell in the hydrogen production module to produce hydrogen until the temperature of the electrolytic cell meets the target temperature condition includes:
when the current wind speed is greater than a target wind speed upper threshold or the current wind speed is less than a target wind speed lower threshold, if the temperature of the electrolytic cell does not meet the target temperature condition, controlling the wind power generation module to supply power to a heater in the hydrogen production module so that the heater heats the electrolytic cell;
and when the temperature of the electrolytic cell reaches the target temperature condition, stopping supplying power to the heater, starting the electrolytic cell, and supplying power to the electrolytic cell so as to ensure that the electrolytic cell performs electrolytic hydrogen production.
Optionally, after the power supply to the heater is stopped, the electrolytic cell is started and power is supplied to the electrolytic cell when the temperature of the electrolytic cell reaches the target temperature condition, so that the electrolytic cell performs hydrogen production by electrolysis, the method further includes:
supplying power to a cooler in the hydrogen production module to maintain the temperature of the electrolyzer to meet a target temperature condition.
In the embodiment, when the wind speed is higher than the rated wind speed, the wind power generation power exceeds the rated grid-connected power, the electrolytic cell plays a role in absorption, and the part with the power exceeding is used for the electrolytic cell module. At this time, the following two cases are divided according to the temperature of the electrolytic cell: if the temperature of the electrolytic bath is below the set working temperature, the full power is supplied to the heater to rapidly raise the temperature without applying an electrolysis voltage, i.e., without starting the electrolysis process. If the temperature of the electrolytic cell is higher than the set working temperature, the heating is stopped, the redundant wind power is mainly used for the electrolysis process and the cooler, the power of the cooler is determined by the heat generated in the electrolysis process, the power can be simply considered to be positively correlated with the square of the current, and the function of the cooler is to prevent the temperature from exceeding the limit which can be born by the equipment. The other part of the power amount distributed to the electrolysis process determines the input voltage of the electrolytic cell, the voltage and the current under the current temperature and the input power can be calculated through the I-V curve of the electrolytic cell, and the voltage is used as a reference value to be input into a 6-pulse PWM pulse generator of a rectifier to control the output voltage of the rectifier, thereby adjusting the power of the electrolysis process.
When the wind power is smaller, the wind power generation power is correspondingly smaller, a wind power non-grid-connected mode can be adopted, and the wind power is completely used for the electrolytic cell. At this point the electrolysis process in the cell unit is stopped, the heater is started and full power is used for heating. Thus, the temperature of the electrolytic cell can be increased during the period of low wind power, and the electrolytic cell is prepared for later stages, so that the efficiency and the yield of the next stage of electrolytic cell electrolysis are improved. In the process, the thermal inertia of the device lasts for a long time, if extreme conditions occur, if the temperature reaches the set working temperature of the equipment, the heater is closed, the cooler is opened, the electrolysis process is started to electrolyze water to produce hydrogen, and the voltage regulation process is in the same operation state 1.
In some embodiments, the method further comprises:
and based on the hydrogen production control strategy, if the current wind speed is between the lower threshold value of the target wind speed and the upper threshold value of the target wind speed, controlling the wind power generation module to output power to the grid-connected wind power system.
In the embodiment, when the wind speed is slightly lower than the rated wind speed, the wind power generation power is slightly lower than the rated grid-connected power, and the cooler, the heater and the electrolysis process of the electrolysis bath are not started at the moment, so that the natural heat dissipation state is kept.
In order to execute the hydrogen production control method based on wind power integration corresponding to the method embodiment, corresponding functions and technical effects are realized. Referring to fig. 3, fig. 3 shows a structural block diagram of a hydrogen production control device based on wind power integration provided by the embodiment of the invention. For convenience of explanation, only the parts related to the embodiment are shown, and the hydrogen production control device based on the wind power integration provided by the embodiment of the invention comprises:
the acquisition unit 301 is used for acquiring system parameters of the wind power grid-connected hydrogen production system, wherein the system parameters comprise fan parameters, generator parameters, power grid parameters and electrolytic bath parameters, and the wind power grid-connected hydrogen production system comprises a wind power generation module and a hydrogen production module;
the generating unit 302 is configured to generate a hydrogen production control strategy of the wind power grid-connected hydrogen production system according to the system parameters by using a preset electric-thermal coupling mechanism, where the hydrogen production control strategy includes a target wind speed condition and a target temperature condition;
and the control unit 303 is configured to control the wind power generation module to supply power to the hydrogen production module when the current wind speed meets the target wind speed condition based on the hydrogen production control strategy, and start the electrolytic cell to produce hydrogen until the temperature of the electrolytic cell in the hydrogen production module meets the target temperature condition.
In some embodiments, the control unit 303 is specifically configured to:
when the current wind speed is greater than an upper threshold value of a target wind speed or the current wind speed is less than a lower threshold value of the target wind speed, if the temperature of the electrolytic cell does not meet the target temperature condition, controlling the wind power generation module to supply power to a heater in the hydrogen production module so that the heater heats the electrolytic cell;
and when the temperature of the electrolytic cell reaches the target temperature condition, stopping supplying power to the heater, starting the electrolytic cell, and supplying power to the electrolytic cell so as to ensure that the electrolytic cell performs electrolytic hydrogen production.
In some embodiments, the control unit 303 is further specifically configured to:
supplying power to a cooler in the hydrogen production module to maintain the temperature of the electrolyzer to meet a target temperature condition.
In some embodiments, the apparatus further comprises:
and the second control unit is used for controlling the wind power generation module to output power to the grid-connected wind power system if the current wind speed is between the lower threshold value of the target wind speed and the upper threshold value of the target wind speed based on the hydrogen production control strategy.
In some embodiments, the generating unit 302 includes:
the first generation subunit is used for generating a target temperature condition corresponding to the electrolytic bath module according to the parameters of the electrolytic bath by using a preset electric-thermal coupling mechanism;
the second generating subunit is configured to generate the target wind speed condition of the wind power generation module according to a fan parameter, the generator parameter, and the grid parameter by using a preset wind power conversion mechanism;
and the third generation subunit is used for generating a hydrogen production control strategy of the wind power grid-connected hydrogen production system according to the target temperature condition and the target wind speed condition.
In some embodiments, the electro-thermal coupling mechanism comprises an electro-thermal coupling relationship, and the first generating subunit is specifically configured to:
and calculating a corresponding target temperature condition of the electrolytic cell module when the electrolytic cell module reaches the preset optimal electrolytic performance based on the electrolytic cell parameters by utilizing the electric-thermal coupling relation of the electrolytic cell module.
In some embodiments, the wind power conversion mechanism includes a conversion relationship between wind energy and electric energy, and the second generating subunit is specifically configured to:
and calculating a target wind speed condition corresponding to the wind power generation module when the rated power of the power grid is reached according to the fan parameter and the generator parameter by using the conversion relation between the wind energy and the electric energy.
The hydrogen production control device based on wind power integration can implement the hydrogen production control method based on wind power integration of the embodiment of the method. The alternatives in the above-described method embodiments are also applicable to this embodiment and will not be described in detail here. The rest of the embodiments of the present invention may refer to the contents of the above method embodiments, and in this embodiment, details are not repeated.
Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. As shown in fig. 4, the electronic apparatus 4 of this embodiment includes: at least one processor 40 (only one shown in fig. 4), a memory 41, and a computer program 42 stored in the memory 41 and executable on the at least one processor 40, the processor 40 implementing the steps of any of the method embodiments described above when executing the computer program 42.
The electronic device 4 may be a computing device such as a smart phone, a tablet computer, a desktop computer, and a cloud server. The electronic device may include, but is not limited to, a processor 40, a memory 41. Those skilled in the art will appreciate that fig. 4 is merely an example of the electronic device 4, and does not constitute a limitation of the electronic device 4, and may include more or less components than those shown, or some of the components may be combined, or different components may be included, such as an input output device, a network access device, and the like.
The Processor 40 may be a Central Processing Unit (CPU), and the Processor 40 may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may in some embodiments be an internal storage unit of the electronic device 4, such as a hard disk or a memory of the electronic device 4. The memory 41 may also be an external storage device of the electronic device 4 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the electronic device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the electronic device 4. The memory 41 is used for storing an operating system, an application program, a BootLoader (BootLoader), data, and other programs, such as program codes of the computer program. The memory 41 may also be used to temporarily store data that has been output or is to be output.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in any of the method embodiments described above.
Embodiments of the present invention provide a computer program product, which, when running on an electronic device, enables the electronic device to implement the steps in the above method embodiments when executed.
In the several embodiments provided in the present invention, it should be understood that each block in the flowchart or block diagrams may represent a module, a program segment, or a portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing an electronic device to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above-mentioned embodiments are only examples of the present invention and are not intended to limit the scope of the present invention. It should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A hydrogen production control method based on wind power integration is characterized by comprising the following steps:
the method comprises the steps of obtaining system parameters of a wind power grid-connected hydrogen production system, wherein the system parameters comprise fan parameters, generator parameters, power grid parameters and electrolytic bath parameters, and the wind power grid-connected hydrogen production system comprises a wind power generation module and a hydrogen production module;
generating a hydrogen production control strategy of the wind power grid-connected hydrogen production system according to the system parameters by using a preset electric heating coupling mechanism, wherein the hydrogen production control strategy comprises a target wind speed condition and a target temperature condition;
and based on the hydrogen production control strategy, when the current wind speed meets the target wind speed condition, controlling the wind power generation module to supply power to the hydrogen production module, and starting the electrolytic cell to produce hydrogen until the temperature of the electrolytic cell in the hydrogen production module meets the target temperature condition.
2. The wind power integration-based hydrogen production control method according to claim 1, wherein the controlling the wind power generation module to supply power to the hydrogen production module when the current wind speed meets the target wind speed condition based on the hydrogen production control strategy, and starting an electrolytic cell in the hydrogen production module to produce hydrogen until the temperature of the electrolytic cell meets the target temperature condition comprises:
when the current wind speed is greater than an upper threshold value of a target wind speed or the current wind speed is less than a lower threshold value of the target wind speed, if the temperature of the electrolytic cell does not meet the target temperature condition, controlling the wind power generation module to supply power to a heater in the hydrogen production module so that the heater heats the electrolytic cell;
and when the temperature of the electrolytic cell reaches the target temperature condition, stopping supplying power to the heater, starting the electrolytic cell, and supplying power to the electrolytic cell so as to ensure that the electrolytic cell performs electrolytic hydrogen production.
3. The wind power integration-based hydrogen production control method according to claim 2, wherein after the step of stopping power supply to the heater, starting the electrolyzer, and supplying power to the electrolyzer to allow the electrolyzer to produce hydrogen by electrolysis when the temperature of the electrolyzer reaches a target temperature condition, the method further comprises the following steps:
supplying power to a cooler in the hydrogen production module to maintain the temperature of the electrolyzer to meet a target temperature condition.
4. The wind power integration-based hydrogen production control method according to claim 1, further comprising:
and based on the hydrogen production control strategy, if the current wind speed is between the lower threshold value of the target wind speed and the upper threshold value of the target wind speed, controlling the wind power generation module to output power to the grid-connected wind power system.
5. The wind power integration-based hydrogen production control method according to claim 1, wherein the generating of the hydrogen production control strategy of the wind power integration-based hydrogen production system according to the system parameters by using a preset electric-thermal coupling mechanism comprises:
generating a target temperature condition corresponding to the electrolytic bath module according to the electrolytic bath parameters by using a preset electric-thermal coupling mechanism;
generating the target wind speed condition of the wind power generation module according to a fan parameter, the generator parameter and the power grid parameter by using a preset wind power conversion mechanism;
and generating a hydrogen production control strategy of the wind power grid-connected hydrogen production system according to the target temperature condition and the target wind speed condition.
6. The wind power integration-based hydrogen production control method according to claim 5, wherein the electrothermal coupling mechanism comprises an electrothermal coupling relationship, and the generating of the target temperature condition corresponding to the electrolyzer module according to the electrolyzer parameters by using the preset electrothermal coupling mechanism comprises:
and calculating a corresponding target temperature condition of the electrolytic cell module when the electrolytic cell module reaches the preset optimal electrolytic performance based on the electrolytic cell parameters by utilizing the electric-thermal coupling relation of the electrolytic cell module.
7. The wind power integration-based hydrogen production control method according to claim 5, wherein the wind power conversion mechanism comprises a conversion relation between wind energy and electric energy, and the target wind speed condition of the wind power generation module is generated according to a fan parameter, the generator parameter and the grid parameter by using a preset wind power conversion mechanism, and comprises:
and calculating a target wind speed condition corresponding to the wind power generation module when the rated power of the power grid is reached according to the fan parameter and the generator parameter by using the conversion relation between wind energy and electric energy.
8. A hydrogen production control device based on wind power integration is characterized by comprising:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring system parameters of the wind power grid-connected hydrogen production system, the system parameters comprise fan parameters, generator parameters, power grid parameters and electrolytic bath parameters, and the wind power grid-connected hydrogen production system comprises a wind power generation module and a hydrogen production module;
the generating unit is used for generating a hydrogen production control strategy of the wind power grid-connected hydrogen production system according to the system parameters by utilizing a preset electric-thermal coupling mechanism, wherein the hydrogen production control strategy comprises a target wind speed condition and a target temperature condition;
and the control unit is used for controlling the wind power generation module to supply power to the hydrogen production module when the current wind speed meets the target wind speed condition based on the hydrogen production control strategy, and starting the electrolytic cell to produce hydrogen until the temperature of the electrolytic cell in the hydrogen production module meets the target temperature condition.
9. An electronic device comprising a processor and a memory for storing a computer program which, when executed by the processor, implements the wind grid-tied hydrogen production control method of any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when executed by a processor, implements the wind grid-connected hydrogen production control method according to any one of claims 1 to 7.
CN202210787154.4A 2022-07-05 2022-07-05 Hydrogen production control method, device, equipment and medium based on wind power integration Pending CN115305501A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116516413A (en) * 2023-07-03 2023-08-01 氢联(江苏)高科技有限公司 Control method and system for multi-tank parallel electrolytic hydrogen production

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116516413A (en) * 2023-07-03 2023-08-01 氢联(江苏)高科技有限公司 Control method and system for multi-tank parallel electrolytic hydrogen production
CN116516413B (en) * 2023-07-03 2023-12-12 氢联(江苏)高科技有限公司 Control method and system for multi-tank parallel electrolytic hydrogen production

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