Community distributed green electricity hydrogen production and combined heat and power supply integrated system and control method

Abstract

The invention discloses a community distributed green electricity hydrogen production and cogeneration integrated system and a control method. In the system, a photovoltaic / wind power generation module converts solar energy / wind energy into electric energy and supplies power to user side electric equipment connected with a converter and a water electrolysis hydrogen production module; the water electrolysis hydrogen production module is used for electrolyzing water to produce hydrogen; the hydrogen storage module is used for storing the prepared hydrogen, and a storage period from several hours to several months can be realized; the hydrogen fuel cell heat and power cogeneration module is used for supplying electric energy generated by hydrogen to user side electric equipment, heat energy is transmitted to the heat storage water tank for heat storage, and heat is supplied to users and domestic hot water is provided. According to the system, community renewable energy green electricity can be utilized to produce hydrogen and store the hydrogen, the hydrogen is supplied to the hydrogen fuel cell combined heat and power module when a user side needs to use energy, the capacity and energy consumption volatility and time difference are balanced, the distributed renewable energy utilization rate is increased, dependence of a community on power grid energy is relieved, and carbon emission is reduced.

Description

Technical Field

[0001] The present invention relates to the field of new energy technologies, and in particular to a community distributed green electricity hydrogen production and cogeneration integrated system and a control method. Background Art

[0002] In the current energy development pattern, new energy (especially green energy) is gradually occupying an important position and being widely used. Hydrogen energy, as a clean and efficient secondary energy, has attracted widespread attention because of its abundant reserves, renewable nature, and the only combustion product is water. However, traditional hydrogen production methods mostly rely on fossil energy and cannot be completely green and environmentally friendly.

[0003] The existing green electricity hydrogen production and application technologies mainly face the following problems: 1) Insufficient utilization of green electricity. Although solar photovoltaic and wind power generation have been applied in many communities and parks, due to the volatility of renewable energy generation and the inflexibility of grid dispatch, there is a widespread problem of power generation abandonment, and the utilization rate of green electricity is low. In addition, as renewable energy accounts for an increasing proportion of energy utilization, the problems of wind and solar power abandonment and power allocation will become more and more prominent, which will cause serious waste of green electricity resources and is not conducive to the promotion of energy transformation; 2) Low efficiency of hydrogen production and storage. Traditional water electrolysis hydrogen production and storage technology has many limitations. From the perspective of energy efficiency, its energy conversion efficiency needs to be improved; in terms of cost, the equipment, materials, operation and maintenance costs involved in the hydrogen production and storage process are relatively high; in addition, it is difficult to achieve a good match between the hydrogen transportation link and the volatility of renewable energy generation. These factors combined make it difficult to achieve efficient use of community distributed renewable energy and hydrogen energy, thereby limiting the large-scale promotion and application of green electricity hydrogen production technology at the community level; 3) Cogeneration is disconnected from renewable energy utilization. Existing cogeneration systems and renewable energy power generation systems usually operate independently, without working together to achieve higher energy efficiency. This independence makes it impossible for the two to work together to achieve higher energy efficiency. For example, the cogeneration system may rely more on traditional energy supply during operation, and fail to make full use of the green electricity generated by the renewable energy power generation system. At the same time, the electricity generated by the renewable energy power generation system is not effectively integrated with the cogeneration system, resulting in a waste of energy resources and is not conducive to building an integrated and efficient energy supply system. 4) The problem of coupling electricity and hydrogen. Renewable energy generation is intermittent and volatile. For example, photovoltaic power generation is affected by factors such as day and night and weather, and wind power generation is affected by factors such as wind speed. The hydrogen production process requires stable power input. How to effectively couple unstable renewable energy power with the hydrogen production system to achieve efficient and stable green electricity hydrogen production is a key technical challenge. Summary of the invention

[0004] The embodiments of the present invention provide a community distributed green electricity hydrogen production and cogeneration integrated system and control method, aiming to solve the problem of low green electricity utilization rate caused by volatility and inflexible grid scheduling in renewable energy power generation methods used in communities and parks in the prior art methods.

[0005] In the first aspect, an embodiment of the present invention provides a community distributed green electricity hydrogen production and cogeneration integrated system, which includes a photovoltaic / wind power generation module, a water electrolysis hydrogen production module, a hydrogen storage module, a hydrogen fuel cell cogeneration module and a hot water storage tank; The photovoltaic / wind power generation module converts solar energy / wind energy into electrical energy through a converter, and can supply power to the user-side electrical equipment connected to the converter, and also to the water electrolysis hydrogen production module; The water electrolysis hydrogen production module is used to electrolyze water to produce hydrogen; The hydrogen storage module is connected to the water electrolysis hydrogen production module through a connecting pipe, and is used to store the hydrogen produced by the water electrolysis hydrogen production module; The hydrogen fuel cell cogeneration module is connected to the hydrogen storage module through a gas supply pipeline, and is used to use the generated electricity to power the user-side electrical equipment connected to the hydrogen fuel cell cogeneration module, and transfer the heat energy generated during the power generation process to the hot water storage tank for heat storage; The hot water storage tank is used to store the thermal energy generated by the hydrogen fuel cell cogeneration module to provide heating to users or domestic hot water.

[0006] In a second aspect, an embodiment of the present invention provides a control method for a community distributed green electricity hydrogen production and cogeneration integrated system, which is applied to a control console, wherein the photovoltaic / wind power generation module, the water electrolysis hydrogen production module, the hydrogen storage module, the hydrogen fuel cell cogeneration module and the hot water storage tank in the community distributed green electricity hydrogen production and cogeneration integrated system are all connected to the control console; the control method comprises: Acquire current meteorological data and equipment deployment information of photovoltaic / wind power generation modules in the target community, and determine the current power generation working mode of the photovoltaic / wind power generation module based on a preset new energy power generation working mode recommendation strategy, the current meteorological data and the equipment deployment information; Determine, according to the current power generation working mode, a first power supply ratio corresponding to the photovoltaic / wind power generation module supplying power to the user-side electrical equipment, and a second power supply ratio corresponding to the water electrolysis hydrogen production module supplying power; Controlling the water electrolysis hydrogen production module to produce hydrogen when the photovoltaic / wind power generation module supplies power according to the second power supply ratio, and storing the hydrogen in the hydrogen storage module; Based on the community electricity consumption history data of the target community, the current average electricity consumption data corresponding to the user-side power consumption equipment and the preset hydrogen fuel cell power generation control strategy, the current power generation power of the hydrogen fuel cell cogeneration module is determined to control the hydrogen fuel cell cogeneration module to generate electricity at the current power generation power.

[0007] The embodiment of the present invention provides a community distributed green electricity hydrogen production and cogeneration integrated system and control method, the system includes a photovoltaic / wind power generation module, a water electrolysis hydrogen production module, a hydrogen storage module, a hydrogen fuel cell cogeneration module and a hot water storage tank; the photovoltaic / wind power generation module converts solar energy / wind energy into electrical energy through a converter, and can power the user-side electrical equipment connected to the converter, and power the water electrolysis hydrogen production module; the water electrolysis hydrogen production module is used to electrolyze water to prepare hydrogen; the hydrogen storage module is connected to the water electrolysis hydrogen production module through a connecting pipe, and is used to store the hydrogen prepared by the water electrolysis hydrogen production module; the hydrogen fuel cell cogeneration module is connected to the hydrogen storage module through a gas supply pipe, and is used to power the user-side electrical equipment connected to the hydrogen fuel cell cogeneration module with the generated electrical energy, and transfer the generated heat energy to the hot water storage tank for heat storage; the hot water storage tank is used to store the heat energy generated by the hydrogen fuel cell cogeneration module to heat the user or provide hot water for daily use. Through the above system, the electric energy generated by green electricity generation can be fully utilized to provide hydrogen to the water electrolysis hydrogen production module for hydrogen production, and the prepared hydrogen can be supplied to the hydrogen fuel cell cogeneration module. The hydrogen fuel cell cogeneration module uses the electric energy generated by the hydrogen to provide it to the user-side electrical equipment, and the generated heat energy is stored in the water storage tank, thereby improving the utilization rate of green electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0009] Figure 1 A schematic block diagram of a community distributed green electricity hydrogen production and cogeneration integrated system provided by an embodiment of the present invention; Figure 2 A schematic block diagram of a hydrogen fuel cell cogeneration module in a community distributed green electricity hydrogen production and cogeneration integrated system provided by an embodiment of the present invention; Figure 3 A schematic block diagram of a water electrolysis hydrogen production module in a community distributed green electricity hydrogen production and cogeneration integrated system provided by an embodiment of the present invention; Figure 4A flow chart of a control method for a community distributed green electricity hydrogen production and cogeneration integrated system provided by an embodiment of the present invention; Figure 5 A schematic diagram of a sub-process of a control method for a community distributed green electricity hydrogen production and cogeneration integrated system provided by an embodiment of the present invention; Figure 6 A schematic diagram of another sub-process of the control method of the community distributed green electricity hydrogen production and cogeneration integrated system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0010] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0011] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0012] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0013] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0014] See also Figure 1 , which is a schematic block diagram of a community distributed green electricity hydrogen production and cogeneration integrated system provided by an embodiment of the present invention. Figure 1 As shown, the community distributed green electricity hydrogen production and cogeneration integrated system includes a photovoltaic / wind power generation module 10, a water electrolysis hydrogen production module 20, a hydrogen storage module 30, a hydrogen fuel cell cogeneration module 40 and a hot water storage tank 50; The photovoltaic / wind power generation module 10 converts solar / wind energy into electrical energy through the converter 11, and can supply power to the user-side electrical equipment 60 connected to the converter 11, and also supplies power to the water electrolysis hydrogen production module 20; The water electrolysis hydrogen production module 20 is used to electrolyze water to produce hydrogen; The hydrogen storage module 30 is connected to the water electrolysis hydrogen production module 20 through a connecting pipe 31, and is used to store the hydrogen produced by the water electrolysis hydrogen production module 20; The hydrogen fuel cell cogeneration module 40 is connected to the hydrogen storage module 30 through the gas supply pipeline 32, and is used to use the generated electric energy to power the user-side electrical equipment 60 connected to the hydrogen fuel cell cogeneration module 40, and transfer the heat energy generated during the hydrogen power generation process to the hot water storage tank 50 for heat storage; The hot water storage tank 50 is used to store the thermal energy generated by the hydrogen fuel cell cogeneration module 40 to provide heating for users or hot water for domestic use.

[0015] In this embodiment, the photovoltaic / wind power generation module 10 is deployed in a community (such as a residential community, a residential quarter, etc.) or a park (such as an industrial park, an office park, etc.), and the building surfaces, parking lots, small squares, green spaces, roads and other open spaces in the community are used to build or renovate photovoltaic power generation devices, making full use of solar energy resources for power generation; at the same time, wind power generation devices can be built or renovated in areas such as the rooftops and open spaces in the community. In this way, the photovoltaic / wind power generation module 10 deployed in the community can effectively generate green electricity (i.e., use solar energy and wind energy to supply energy to the community, reduce the demand for power grid power supply, and thus significantly reduce the community's carbon emissions), and the electric energy obtained by the conversion of the power generation through the converter can directly supply the user-side electrical equipment 60 in the community on the one hand, and can supply power to the water electrolysis hydrogen production module 20 on the other hand to enable it to prepare hydrogen.

[0016] Since the power supply of the water electrolysis hydrogen production module 20 is a photovoltaic / wind power generation module, rather than relying on the burning of fossil energy as the energy source for the hydrogen production process, the electric energy generated by green power generation is fully utilized to provide the water electrolysis hydrogen production module 20 for hydrogen production.

[0017] Moreover, the hydrogen produced by the water electrolysis hydrogen production module 20 is first stored in the hydrogen storage module 30. When the hydrogen fuel cell cogeneration module 40 has a power generation demand, hydrogen is obtained from the hydrogen storage module 30 and power is generated, thereby supplying power to the user-side electrical equipment 60 connected to the hydrogen fuel cell cogeneration module 40, and transferring the heat energy generated in the hydrogen power generation process to the hot water storage tank 50 (the hot water storage tank 50 is a hot water storage tank with a heat preservation function) for heat storage. The above process makes full use of the electrical energy and heat energy generated in the hydrogen power generation process.

[0018] The above example is based on the deployment of a community distributed green electricity hydrogen production and cogeneration integrated system in a community. When the above-mentioned community distributed green electricity hydrogen production and cogeneration integrated system is deployed in multiple communities in a distributed manner, the flexibility and reliability of energy supply are improved, and it can cope with different changes in energy demand.

[0019] In one embodiment, if Figure 1 and Figure 2 As shown, the hydrogen fuel cell cogeneration module 40 includes a first controller 41 and a hydrogen fuel cell 42 . The hydrogen fuel cell 42 is connected to the hydrogen storage module 30 via the gas supply pipeline 32 , and the hydrogen fuel cell 42 is electrically connected to the first controller 41 .

[0020] In this embodiment, in order to realize intelligent control of the power generation process in the hydrogen fuel cell 42, a first controller 41 can be specifically set in the hydrogen fuel cell cogeneration module 40, and the power generation process of the hydrogen fuel cell 42 is intelligently controlled based on the control signal generated by the first controller 41 itself or received from other controllers (such as control centers such as consoles). In addition, the first controller 41 can also intelligently and dynamically adjust the power generation and heating power of the hydrogen fuel cell 42 according to the user's electricity and heating needs.

[0021] In one embodiment, if Figure 1 As shown, the community distributed green electricity hydrogen production and cogeneration integrated system also includes a hydrogen processing area 70; the water electrolysis hydrogen production module 20 and the hydrogen storage module 30 are arranged in the hydrogen processing area 70, and the distance between the hydrogen processing area 70 and the user-side electrical equipment 60, the photovoltaic / wind power generation module 10, and the hydrogen fuel cell cogeneration module 40 exceeds the first preset safety distance.

[0022] In this embodiment, in order to improve the system safety of the integrated system of distributed green electricity hydrogen production and cogeneration in the community, the water electrolysis hydrogen production module 20 and the hydrogen storage module 30 can be set in the hydrogen processing area 70, so as to facilitate the unified safety management of the hydrogen production module 20 and the hydrogen storage module 30 in the hydrogen processing area 70. Moreover, since the distance between the hydrogen processing area 70 and the user-side electrical equipment 60, the photovoltaic / wind power generation module 10, and the hydrogen fuel cell cogeneration module 40 exceeds the first preset safety distance, the safety of the user-side electrical equipment 60, the photovoltaic / wind power generation module 10, and the hydrogen fuel cell cogeneration module 40 is guaranteed. Moreover, through the mode of centralized hydrogen production and distributed hydrogen fuel cell cogeneration in the community, the problem of hydrogen transportation and storage is solved, and the comprehensive utilization efficiency of hydrogen energy is improved.

[0023] In one embodiment, if Figure 1 As shown, the community distributed green electricity hydrogen production and cogeneration integrated system also includes a cogeneration processing area 80; the hydrogen fuel cell cogeneration module 40 and the hot water storage tank 50 are arranged in the cogeneration processing area 80, and the distance between the cogeneration processing area 80 and the user-side electrical equipment 60 exceeds the second preset safety distance, and the second preset safety distance is smaller than the first preset safety distance.

[0024] In this embodiment, since the hydrogen fuel cell cogeneration module 40 and the hot water storage tank 50 in the community distributed green electricity hydrogen production and cogeneration integrated system are the core modules of cogeneration and have higher safety, they are set in the cogeneration processing area 80 closer to the user, which can reduce the use of the pipeline for the hot water storage tank 50 to transport hot water to the user side. In addition, the distance between the hydrogen fuel cell cogeneration module 40 and the hot water storage tank 50 can also be set to be less than the third preset safety distance, so that the heat generated by the hydrogen fuel cell 42 in the hydrogen fuel cell cogeneration module 40 is transferred to the hot water storage tank 50 with less loss.

[0025] In one embodiment, if Figure 3 As shown, the water electrolysis hydrogen production module 20 includes a second controller 21, an electrolytic cell 22 and a cooling device 23. The electrolytic cell 22 is electrically connected to the photovoltaic / wind power generation module 10, and the electrolytic cell 22 is also electrically connected to the second controller 21; the cooling device 23 is arranged in the electrolytic cell 22 or on the outer wall of the electrolytic cell 22, and the cooling device 23 is electrically connected to the second controller 21.

[0026] In this embodiment, the water electrolysis hydrogen production module 20 specifically adopts an electrolyzer 22 to prepare hydrogen, and in order to realize intelligent control of its hydrogen production process, a second controller 21 is also provided, and the hydrogen production process of the electrolyzer 22 can be controlled by the second controller 21. In addition, since a large amount of heat is generated in the process of preparing hydrogen, in order to ensure the equipment stability and safety of the water electrolysis hydrogen production module 20, it can be cooled, specifically, by a cooling device 23 arranged in the electrolyzer 22 or on the outer wall of the electrolyzer 22 to cool the electrolyzer 22 during the start-up of hydrogen production.

[0027] It can be seen that the implementation of the community distributed green electricity hydrogen production and cogeneration integrated system in the embodiment of the present application makes full use of the electric energy generated by green electricity generation to provide it to the water electrolysis hydrogen production module for hydrogen production, and stores renewable energy through the hydrogen storage module. When the user needs energy, the prepared hydrogen can be supplied to the hydrogen fuel cell cogeneration module, and the electric energy generated by the hydrogen in the hydrogen fuel cell cogeneration module is provided to the user's electrical equipment, and the generated heat energy is stored in the water storage tank, thereby improving the utilization rate of green electricity.

[0028] The embodiment of the present invention also provides a control method for a community distributed green electricity hydrogen production and cogeneration integrated system, such as Figure 4 As shown, the method includes steps S110 to S140. The control method is applied to a console, and the console is connected to Figure 1 The photovoltaic / wind power generation module 10, water electrolysis hydrogen production module 20, hydrogen storage module 30, hydrogen fuel cell cogeneration module 40 and hot water storage tank 50 in the community distributed green electricity hydrogen production and cogeneration integrated system shown are all connected.

[0029] S110, obtaining current meteorological data and equipment deployment information of photovoltaic / wind power generation modules in the target community, and determining the current power generation working mode of the photovoltaic / wind power generation module based on a preset new energy power generation working mode recommendation strategy, the current meteorological data and the equipment deployment information.

[0030] In this embodiment, in order to realize the intelligent control of the community distributed green electricity hydrogen production and cogeneration integrated system by the control console (which can be understood as a computer room or edge server deployed in the community), the current meteorological data of the target community area where the community distributed green electricity hydrogen production and cogeneration integrated system is deployed can be obtained at a preset fixed time point every day (such as 6:00 in the morning) (which can be the meteorological data within the next hour or the meteorological data for the whole day), and the current meteorological data is taken as the meteorological data for the next hour and the method of steps S110-S140 is also effective within the next hour as an example (that is, the control console needs to control the execution of steps S110-S140 once every hour, and the technical solution is illustrated by taking the execution of steps S110-S140 once from 6:00 to 7:00 in the morning as an example). After determining the temperature information, wind information, light radiation intensity and other information in the current meteorological data, it can also be combined with the equipment deployment information of the photovoltaic / wind power generation module in the target community as the input data of the new energy power generation working mode recommendation strategy, and the new energy power generation working mode recommendation strategy outputs a current power generation working mode. Afterwards, the photovoltaic / wind power generation module 10 in the community's distributed green electricity hydrogen production and cogeneration integrated system generates electricity according to the current power generation working mode.

[0031] During specific implementation, the strategy for recommending the working mode of new energy power generation can adopt a convolutional neural network, and the temperature information, wind information, light radiation intensity in the current meteorological data and the equipment deployment information of the photovoltaic / wind power generation module in the target community form an input vector, which is input into the convolutional neural network, and a classification result can be output for selecting the target power generation working mode corresponding to the classification result from multiple preset power generation working modes as the current power generation working mode. Of course, the specific implementation of the strategy for recommending the working mode of new energy power generation is not limited to the use of convolutional neural networks, but can also adopt other implementation methods such as preset mapping tables, which can be flexibly set according to the actual needs of users. It can be seen that based on the current meteorological data of the area to which the target community belongs and the equipment deployment information of the photovoltaic / wind power generation module in the target community, the specific power generation mode of the photovoltaic / wind power generation module can be quickly and intelligently determined.

[0032] In one embodiment, if Figure 5 As shown, step S110 includes: S111, determining photovoltaic power generation deployment information and wind power generation deployment information in the photovoltaic / wind power generation module according to the device deployment information; S112, determining the device startup type and device startup quantity in the photovoltaic / wind power generation module according to the weather type of the current meteorological data; S113: Determine the current power generation working mode according to the recommended strategy for the new energy power generation working mode, the device startup type and the device startup quantity.

[0033] In this embodiment, after the console knows the equipment deployment information in the target community, it can first obtain the photovoltaic power generation deployment information in the photovoltaic / wind power generation module (that is, the specific deployment location and specific deployment quantity of each photovoltaic power generation panel in the target community can be obtained from the photovoltaic power generation deployment information) and the wind power generation deployment information (that is, the specific deployment location and specific deployment quantity of each wind power generation device in the target community can be obtained from the wind power generation deployment information).

[0034] Afterwards, the device startup type and the number of devices started in the photovoltaic / wind power generation module can be determined specifically according to the weather type of the current meteorological data. For example, if the weather type corresponding to the current meteorological data is rainy, all wind power generation devices in the photovoltaic / wind power generation module can be started for wind power generation, and the photovoltaic power generation panels can be turned off; if the weather type corresponding to the current meteorological data is sunny, all wind power generation devices and photovoltaic power generation panels in the photovoltaic / wind power generation module can be started in corresponding quantities according to the wind information and light radiation intensity.

[0035] Finally, after the device startup type and the number of device startups are known, by combining them with the recommended strategy for the new energy power generation working mode (using classification models such as convolutional neural networks or preset mapping tables), the current power generation working mode can be quickly and intelligently determined.

[0036] S120. Determine, according to the current power generation working mode, a first power supply ratio corresponding to the photovoltaic / wind power generation module supplying power to the user-side electrical equipment, and a second power supply ratio corresponding to the water electrolysis hydrogen production module supplying power.

[0037] In this embodiment, after the console determines the current power generation working mode corresponding to the photovoltaic / wind power generation module, for example, still referring to the above example, in the time interval of 6:00-7:00 in the morning, the photovoltaic / wind power generation module generates electricity in the current power generation working mode, and can also determine the first power supply ratio corresponding to the power supply to the user-side power equipment and the second power supply ratio corresponding to the power supply to the water electrolysis hydrogen production module according to the power supply ratio corresponding to the current power generation working mode. In the time interval of 6:00-7:00 in the morning, the power consumption of the general user-side power equipment is in the non-peak time period of the whole day. At this time, the first power supply ratio can be set to 50% and the second power supply ratio can be set to 50%, which means that 50% of the power generation of the photovoltaic / wind power generation module is delivered to the user-side power equipment for power supply, and the other 50% of the power generation of the photovoltaic / wind power generation module is delivered to the water electrolysis hydrogen production module for hydrogen production.

[0038] In one embodiment, step S120 includes: The current hydrogen production power supply power when the photovoltaic / wind power generation module supplies power according to the second power supply ratio is obtained, and the corresponding hydrogen production of the water electrolysis hydrogen production module is controlled by the current hydrogen production power supply power.

[0039] In this embodiment, after determining the second power supply ratio corresponding to the power supply of the water electrolysis hydrogen production module, the current hydrogen production power supply can be determined according to the product of the power generation power of the photovoltaic / wind power generation module, the preset first power transmission loss rate and the second power supply ratio. Afterwards, the console sends a control signal to the water electrolysis hydrogen production module to control the water electrolysis hydrogen production module to produce hydrogen at the current hydrogen production power supply. It can be seen that the hydrogen production power of the water electrolysis hydrogen production module can be flexibly controlled based on the second power supply ratio.

[0040] S130, controlling the water electrolysis hydrogen production module to produce hydrogen when the photovoltaic / wind power generation module supplies power according to the second power supply ratio, and storing the hydrogen in the hydrogen storage module.

[0041] In this embodiment, after the control console determines the second power supply ratio corresponding to the water electrolysis hydrogen production module and the current hydrogen production power corresponding thereto, a control signal can be sent to the water electrolysis hydrogen production module, and the control signal is used to control the water electrolysis hydrogen production module to produce hydrogen at the current hydrogen production power. Moreover, the hydrogen produced by the water electrolysis hydrogen production module is not used for power generation immediately, but is first stored in a hydrogen storage module, and hydrogen is obtained from the hydrogen storage module when there is a power supply demand.

[0042] S140, based on the community electricity consumption history data of the target community, the current average electricity consumption data corresponding to the user-side power consumption equipment and the preset hydrogen fuel cell power generation control strategy, determine the current power generation power of the hydrogen fuel cell cogeneration module to control the hydrogen fuel cell cogeneration module to generate electricity at the current power generation power.

[0043] In this embodiment, in order to more accurately and intelligently control the hydrogen fuel cell cogeneration module to perform cogeneration, the community electricity consumption history data of the target community can be first obtained (for example, the total electricity consumption, daily electricity consumption, and daily minimum electricity consumption of the target community in the previous natural month are obtained to form the community electricity consumption history data of the target community), the current average electricity consumption data corresponding to the user-side power equipment (in specific implementation, it can be the current average electricity consumption data in the target community in the previous hour time interval compared to the effective time interval of steps S110-S140, such as 5:00-6:00 in the morning) and the preset hydrogen fuel cell power generation control strategy (which can be a convolutional neural network, a recurrent neural network, etc., or a preset electricity consumption data-power generation power mapping relationship, etc.), and then the community electricity consumption history data of the target community and the current average electricity consumption data corresponding to the user-side power equipment are used as input data of the hydrogen fuel cell power generation control strategy, and the current power generation power of the hydrogen fuel cell cogeneration module can be obtained to control the hydrogen fuel cell cogeneration module to generate electricity at the current power generation power. It can be seen that based on the community electricity consumption history data of the target community and the current average electricity consumption data corresponding to the user-side power consumption equipment, the current power generation power of the hydrogen fuel cell cogeneration module can be determined quickly and intelligently.

[0044] In one embodiment, if Figure 6 As shown, step S140 includes: S141, determining the daily minimum electricity consumption of the target community based on the community electricity consumption history data of the target community; S142, obtaining the current estimated remaining power of the hydrogen fuel cell in the hydrogen fuel cell cogeneration module; S143. If it is determined that the current remaining power exceeds the daily minimum power consumption, or it is determined that the full-day power consumption data corresponding to the current average power consumption data does not exceed the daily minimum power consumption, then based on the first hydrogen fuel cell power generation control sub-strategy in the hydrogen fuel cell power generation control strategy, determine the current power generation power of the hydrogen fuel cell cogeneration module.

[0045] In this embodiment, in order to more intelligently and flexibly determine the current power generation of the hydrogen fuel cell cogeneration module, the minimum daily power consumption of the target community can be determined based on the community power consumption history data of the target community. For example, the total power consumption, daily power consumption, daily average power consumption, and daily minimum power consumption of the target community in the previous natural month are obtained to form the community power consumption history data of the target community. The minimum daily power consumption of the target community can be obtained in the community power consumption history data. After that, the current estimated remaining power of the hydrogen fuel cell in the hydrogen fuel cell cogeneration module is obtained. Specifically, the current actual remaining power of the hydrogen fuel cell can be obtained through the power detection circuit in the hydrogen fuel cell, and then multiplied by the preset estimation coefficient to obtain the current estimated remaining power of the hydrogen fuel cell. Finally, it is determined whether the current remaining power exceeds the minimum daily power consumption, and whether the full-day power consumption data corresponding to the current average power consumption data exceeds the minimum daily power consumption. When it is determined that the current remaining power exceeds the daily minimum power consumption, or when it is determined that the full-day power consumption data corresponding to the current average power consumption data (the full-day power consumption data corresponding to the current average power consumption data is determined by the current average power consumption data * 24 hours) does not exceed the daily minimum power consumption, it means that even if the hydrogen fuel cell in the hydrogen fuel cell cogeneration module does not increase the power generation, the power generation will not be insufficient to supply the user-side power equipment. At this time, it is necessary to determine the current power generation of the hydrogen fuel cell cogeneration module based on the first hydrogen fuel cell power generation control sub-strategy in the hydrogen fuel cell power generation control strategy (the first hydrogen fuel cell power generation control sub-strategy is used to determine the current power generation based on the daily minimum power consumption in the community power consumption history data of the target community divided by the preset time, where the preset time can be 1 hour). It can be seen that based on the above method, the current power generation of the hydrogen fuel cell cogeneration module can be quickly and intelligently determined.

[0046] In one embodiment, if Figure 6 As shown, after step S142, the following steps are also included: S144. If it is determined that the current remaining power does not exceed the daily minimum power consumption, or it is determined that the full-day power consumption data corresponding to the current average power consumption data exceeds the daily minimum power consumption, then based on the second hydrogen fuel cell power generation control sub-strategy in the hydrogen fuel cell power generation control strategy, determine the current power generation power of the hydrogen fuel cell cogeneration module.

[0047] In this embodiment, when it is determined that the current remaining power does not exceed the daily minimum power consumption, or when it is determined that the full-day power consumption data corresponding to the current average power consumption data (the full-day power consumption data corresponding to the current average power consumption data is determined by the current average power consumption data * 24 hours) exceeds the daily minimum power consumption, it means that if the hydrogen fuel cell in the hydrogen fuel cell cogeneration module does not increase the power generation, the power generated will be insufficient to supply the user-side power equipment. At this time, it is necessary to determine the current power generation power of the hydrogen fuel cell cogeneration module based on the second hydrogen fuel cell power generation control sub-strategy in the hydrogen fuel cell power generation control strategy (the second hydrogen fuel cell power generation control sub-strategy is used to determine the current power generation power based on the daily average power consumption in the community power consumption history data of the target community divided by the preset time, where the preset time can be 1 hour). It can be seen that based on the above method, the current power generation power of the hydrogen fuel cell cogeneration module can also be quickly and intelligently determined.

[0048] Through the above method, community renewable energy green electricity can be used to produce and store hydrogen. When the user needs energy, hydrogen can be supplied to the hydrogen fuel cell cogeneration module to balance the volatility and time difference of production capacity and energy consumption, improve the utilization rate of distributed renewable energy, alleviate the community's dependence on grid energy, and reduce carbon emissions.

[0049] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A community distributed green electricity hydrogen production and cogeneration integrated system, characterized in that: include: Photovoltaic / wind power generation modules, water electrolysis hydrogen production modules, hydrogen storage modules, hydrogen fuel cell cogeneration modules and hot water storage tanks; The photovoltaic / wind power generation module converts solar energy / wind energy into electrical energy through a converter, and can supply power to the user-side electrical equipment connected to the converter, and also to the water electrolysis hydrogen production module; The water electrolysis hydrogen production module is used to electrolyze water to produce hydrogen; The hydrogen storage module is connected to the water electrolysis hydrogen production module through a connecting pipe, and is used to store the hydrogen produced by the water electrolysis hydrogen production module; The hydrogen fuel cell cogeneration module is connected to the hydrogen storage module through a gas supply pipeline, and is used to use the generated electricity to power the user-side electrical equipment connected to the hydrogen fuel cell cogeneration module, and transfer the heat energy generated during the hydrogen power generation process to the hot water storage tank for heat storage; The hot water storage tank is used to store the thermal energy generated by the hydrogen fuel cell cogeneration module to provide heating to users or domestic hot water.

2. The community distributed green electricity hydrogen production and cogeneration integrated system according to claim 1 is characterized in that: The hydrogen fuel cell cogeneration module includes a first controller and a hydrogen fuel cell. The hydrogen fuel cell is connected to the hydrogen storage module via the gas supply pipeline, and the hydrogen fuel cell is electrically connected to the first controller.

3. The community distributed green electricity hydrogen production and cogeneration integrated system according to claim 1 is characterized in that: It also includes a hydrogen processing area; the water electrolysis hydrogen production module and the hydrogen storage module are arranged in the hydrogen processing area, and the distance between the hydrogen processing area and the user-side electrical equipment, the photovoltaic / wind power generation module, and the hydrogen fuel cell cogeneration module exceeds the first preset safety distance.

4. The community distributed green electricity hydrogen production and cogeneration integrated system according to claim 3 is characterized in that: It also includes a cogeneration processing area; the hydrogen fuel cell cogeneration module and the hot water storage tank are arranged in the cogeneration processing area, and the distance between the cogeneration processing area and the user-side electrical equipment exceeds the second preset safety distance, and the second preset safety distance is smaller than the first preset safety distance.

5. The community distributed green electricity hydrogen production and cogeneration integrated system according to claim 1 is characterized in that: The water electrolysis hydrogen production module includes a second controller, an electrolytic cell and a cooling device. The electrolytic cell is electrically connected to the photovoltaic / wind power generation module, and the electrolytic cell is also electrically connected to the second controller; the cooling device is arranged in the electrolytic cell or on the outer wall of the electrolytic cell, and the cooling device is electrically connected to the second controller.

6. A control method for a community distributed green electricity hydrogen production and cogeneration integrated system as claimed in any one of claims 1 to 5, applied to a control console, characterized in that: The photovoltaic / wind power generation module, water electrolysis hydrogen production module, hydrogen storage module, hydrogen fuel cell cogeneration module and hot water storage tank in the community distributed green electricity hydrogen production and cogeneration integrated system are all connected to the console; the control method includes: Acquire current meteorological data and equipment deployment information of photovoltaic / wind power generation modules in the target community, and determine the current power generation working mode of the photovoltaic / wind power generation module based on a preset new energy power generation working mode recommendation strategy, the current meteorological data and the equipment deployment information; Determine, according to the current power generation working mode, a first power supply ratio corresponding to the photovoltaic / wind power generation module supplying power to the user-side electrical equipment, and a second power supply ratio corresponding to the water electrolysis hydrogen production module supplying power; Controlling the water electrolysis hydrogen production module to produce hydrogen when the photovoltaic / wind power generation module supplies power according to the second power supply ratio, and storing the hydrogen in the hydrogen storage module; Based on the community electricity consumption history data of the target community, the current average electricity consumption data corresponding to the user-side power consumption equipment and the preset hydrogen fuel cell power generation control strategy, the current power generation power of the hydrogen fuel cell cogeneration module is determined to control the hydrogen fuel cell cogeneration module to generate electricity at the current power generation power.

7. The control method of the community distributed green electricity hydrogen production and cogeneration integrated system according to claim 6 is characterized in that: The determining of the current power generation working mode of the photovoltaic / wind power generation module based on the preset new energy power generation working mode recommendation strategy, the current meteorological data and the equipment deployment information includes: Determine photovoltaic power generation deployment information and wind power generation deployment information in the photovoltaic / wind power generation module according to the device deployment information; Determine the equipment startup type and equipment startup quantity in the photovoltaic / wind power generation module according to the weather type of the current meteorological data; The current power generation working mode is determined according to the recommended strategy for the new energy power generation working mode, the equipment startup type and the equipment startup quantity.

8. The control method of the community distributed green electricity hydrogen production and cogeneration integrated system according to claim 6 is characterized in that: The controlling the water electrolysis hydrogen production module to produce hydrogen when the photovoltaic / wind power generation module supplies power according to the second power supply ratio includes: The current hydrogen production power supply power when the photovoltaic / wind power generation module supplies power according to the second power supply ratio is obtained, and the corresponding hydrogen production of the water electrolysis hydrogen production module is controlled by the current hydrogen production power supply power.

9. The control method of the community distributed green electricity hydrogen production and cogeneration integrated system according to claim 6 is characterized in that: The method of determining the current power generation power of the hydrogen fuel cell cogeneration module based on the community power consumption history data of the target community, the current average power consumption data corresponding to the user-side power consumption equipment, and the preset hydrogen fuel cell power generation control strategy includes: Determine the daily minimum electricity consumption of the target community based on the community electricity consumption history data of the target community; Obtaining the current estimated remaining power of the hydrogen fuel cell in the hydrogen fuel cell cogeneration module; If it is determined that the current remaining power exceeds the daily minimum power consumption, or it is determined that the full-day power consumption data corresponding to the current average power consumption data does not exceed the daily minimum power consumption, then based on the first hydrogen fuel cell power generation control sub-strategy in the hydrogen fuel cell power generation control strategy, the current power generation power of the hydrogen fuel cell cogeneration module is determined.

10. The control method of the community distributed green electricity hydrogen production and cogeneration integrated system according to claim 9 is characterized in that: After the step of obtaining the current estimated remaining power of the hydrogen fuel cell in the hydrogen fuel cell cogeneration module, the method further includes: If it is determined that the current remaining power does not exceed the daily minimum power consumption, or it is determined that the full-day power consumption data corresponding to the current average power consumption data exceeds the daily minimum power consumption, then based on the second hydrogen fuel cell power generation control sub-strategy in the hydrogen fuel cell power generation control strategy, the current power generation power of the hydrogen fuel cell cogeneration module is determined.

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