Power system, power generation method of power system, computer device, and storage medium

Abstract

The invention relates to a power system, a power generation method of the power system, computer equipment and a storage medium. The power system comprises a plurality of building groups, power generation equipment and a direct-current power grid, wherein the power generation equipment comprises a photovoltaic module, a fuel cell and an energy storage battery; the power generation equipment is arranged in a plurality of building groups and is connected with the direct-current power grid; and the direct-current power grid is used for supplying power to the plurality of building groups in a mode of regulating and controlling each energy source in the power generation equipment. A photovoltaic module, a fuel cell and an energy storage cell are used as power generation equipment, distributed power generation equipment taking clean energy as fuel can be adopted for power generation, and a direct-current power grid can be adopted for supplying power to a plurality of building groups in a mode of regulating and controlling various energy sources in the power generation equipment; according to the invention, renewable clean energy can be fully utilized through regulation and control, and energy configuration and management can be effectively carried out, so that the utilization rate of low-carbon energy in an electric power system can be improved, and carbon emission in building energy can be greatly reduced.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and in particular to a power system, a power generation method of the power system, a computer device, and a storage medium. Background Art

[0002] With the development of power system technology, Building Integrated Photovoltaic (BIPV) technology has emerged. BIPV technology refers to an energy-saving and emission-reduction technology that combines photovoltaic power generation systems with building structures and uses solar power generation to achieve self-supply of electricity. At present, power systems built based on BIPV technology are widely used in different types of buildings such as commercial offices, industrial plants, and residential buildings.

[0003] However, the current power system built based on BIPV technology has the problem of low utilization rate of low-carbon energy. Summary of the invention

[0004] Based on this, it is necessary to provide a power system, a power generation method of the power system, a computer device and a storage medium that can improve the utilization rate of low-carbon energy in response to the above-mentioned technical problems.

[0005] In a first aspect, the present application provides a power system, which includes: a plurality of building groups, power generation equipment and a DC power grid, wherein the power generation equipment includes a photovoltaic module, a fuel cell and an energy storage battery; the power generation equipment is arranged in the plurality of building groups, and the power generation equipment is connected to the DC power grid;

[0006] The DC power grid is used to supply power to the multiple buildings by regulating various energy sources in the power generation equipment.

[0007] In one embodiment, the power system further includes a first AC power grid and a second AC power grid, the voltage of the first AC power grid is higher than the voltage of the second AC power grid; the first AC power grid is connected to the second AC power grid, and the second AC power grid is connected to the DC power grid;

[0008] The first AC power grid is used to transmit power to each of the building complexes;

[0009] The second AC power grid is used to transmit electricity to each building in the building complex.

[0010] In one embodiment, the power system further includes a converter and a transformer, the DC grid is connected to the second AC grid via the converter, and the second AC grid is connected to the first AC grid via the transformer.

[0011] In one of the embodiments, the power system further comprises a gas component and a heat storage component, and the gas component is connected to the DC power grid;

[0012] The gas assembly and the fuel cell are used to provide thermal resources for the multiple building complexes;

[0013] The heat storage component is used to store the thermal resource.

[0014] In one embodiment, the power generation equipment further includes a charging pile, and the charging pile is connected to the DC power grid.

[0015] In one embodiment, the photovoltaic components are arranged on the roof and facade of each building in the plurality of building complexes.

[0016] In a second aspect, the present application provides a power generation method of an electric power system, applied to the electric power system as described in any one of the first aspects, the method comprising:

[0017] Obtaining power generation of photovoltaic modules in the power system;

[0018] Determining the power generation of the fuel cell and the capacity of the energy storage battery in the power system according to the power generation of the photovoltaic module;

[0019] Power is supplied to a plurality of buildings in the power system according to the power generation of the photovoltaic module, the power generation of the fuel cell and the capacity of the energy storage battery.

[0020] In one embodiment, determining the power generation of the fuel cell and the capacity of the energy storage battery in the power system according to the power generation of the photovoltaic module includes:

[0021] Determining the capacity of the energy storage battery according to the power generation of the photovoltaic module, the power consumption of each building in the plurality of building groups and the power of the energy storage battery;

[0022] The power generation of the fuel cell is determined according to the power generation of the photovoltaic module and the power consumption of each building.

[0023] In a third aspect, the present application also provides a power generation device for a power system, comprising:

[0024] An acquisition module, used for acquiring the power generation of the photovoltaic components in the power system;

[0025] A determination module, used to determine the power generation of the fuel cell and the capacity of the energy storage battery in the power system according to the power generation of the photovoltaic assembly;

[0026] The power supply module is used to supply power to a plurality of building groups in the power system according to the power generation of the photovoltaic module, the power generation of the fuel cell and the capacity of the energy storage battery.

[0027] In a fourth aspect, the present application further provides a computer device, wherein the computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the method in any one of the embodiments of the second aspect are implemented.

[0028] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the method in any one of the embodiments of the second aspect are implemented.

[0029] In a sixth aspect, the present application further provides a computer program product, wherein the computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the method in any one of the embodiments in the second aspect are implemented.

[0030] The above-mentioned power system, power generation method of the power system, computer equipment and storage medium, the power system includes multiple building complexes, power generation equipment and DC power grid, the power generation equipment includes photovoltaic modules, fuel cells and energy storage batteries; the power generation equipment is arranged in multiple building complexes, and the power generation equipment is connected to the DC power grid; the DC power grid is used to supply power to multiple building complexes by regulating the various energy sources in the power generation equipment. In the embodiment of the present application, photovoltaic modules, fuel cells and energy storage batteries can be used as power generation equipment, that is, distributed power generation equipment using clean energy as fuel can be used for power generation, and a DC power grid can be used to supply power to multiple building complexes by regulating the various energy sources in the power generation equipment. It can make full use of renewable clean energy through regulation and effectively configure and manage energy, so it can improve the utilization rate of low-carbon energy in the power system and greatly reduce carbon emissions in building energy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 is a schematic diagram of the structure of a power system in one embodiment;

[0033] Figure 2 is a schematic diagram of the structure of a power system in an exemplary embodiment;

[0034] Figure 3 is a schematic flow chart of a power generation method of a power system in one embodiment;

[0035] Figure 4 is a structural block diagram of a power generation device of a power system in one embodiment;

[0036] Figure 5 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] With the development of power system technology, building integrated photovoltaic (BIPV) technology has emerged. BIPV technology refers to an energy-saving and emission-reduction technology that combines photovoltaic power generation systems with building structures and uses solar power generation to achieve self-supply of electricity. In BIPV technology, photovoltaic panels can be integrated into the structure of a building, such as roofs, exterior walls, windows, etc., so that photovoltaic panels can not only assume the structural function of the building, but also perform photoelectric conversion. In recent years, with the reduction of photovoltaic component costs and the upgrading of engineering technology, the construction cost of BIPV has decreased year by year, and the economic benefits are significant. At present, BIPV has shown good applicability in engineering applications. Power systems built based on BIPV technology are widely used in different types of buildings such as commercial offices, industrial plants, and residential buildings, providing guarantees for the use of new energy and low-carbon operation of buildings.

[0042] However, the current power system built based on BIPV technology cannot achieve effective energy allocation and management, so there is a problem of low utilization rate of low-carbon energy.

[0043] Based on the above technical problems, the embodiments of the present application provide a power system, a power generation method of the power system, a computer device and a storage medium, which are specifically introduced as follows.

[0044] In one embodiment, Figure 1 As shown, a power system is provided, which includes: a plurality of building groups 11, power generation equipment 12 and a DC power grid 13, wherein the power generation equipment 12 includes a photovoltaic module, a fuel cell and an energy storage battery; the power generation equipment 12 is arranged in the plurality of building groups 11, and the power generation equipment 12 is connected to the DC power grid 13;

[0045] The DC power grid 13 is used to supply power to the plurality of buildings 11 by regulating and controlling various energy sources in the power generation equipment 12 .

[0046] Among them, the multiple building groups 11 may include building group 1, building group 2, ..., building group n, and each building group represents a building group composed of multiple buildings managed by a main body, and each building group may include multiple buildings. The power generation equipment 12 may include but is not limited to power generation components such as photovoltaic components, fuel cells and energy storage batteries. The photovoltaic components may be photovoltaic panels, and the fuel cells use natural gas as the main energy source. Preferably, the fuel cell may be a solid oxide fuel cell (Solid Oxide Fuel Cell, SOFC). SOFC is a fully solid-state chemical power generation device that directly converts chemical energy stored in fuel and oxidant into electrical energy in an efficient and environmentally friendly manner at medium and high temperatures. It has the characteristics of high power density, high energy efficiency, multiple fuel types, and clean emissions. Generally, the power generation efficiency of SOFC is between 50% and 65%. At the same time, the high-temperature waste heat generated by SOFC can also be reused by making hot water, lithium bromide refrigeration, etc.

[0047] The DC grid 13 refers to a DC microgrid, which is a microgrid composed of a DC transmission and distribution system and technology. It is an important part of the future intelligent power distribution system and is of great significance to promoting energy conservation and emission reduction and achieving sustainable energy development. Compared with AC microgrids, DC microgrids can more efficiently and reliably accommodate distributed renewable energy generation systems such as wind and light, energy storage units, electric vehicles and other DC power consumption. With the popularization of small-scale distributed new energy power generation equipment, DC distribution technology has become simpler and more reliable. Building power distribution can use DC microgrids to connect distributed renewable energy power generation equipment to the power system, that is, the technical idea of ​​using DC distribution for microgrid networking can be used to build a new power system, thereby improving energy management efficiency and power supply stability.

[0048] In the embodiment of the present application, the power generation equipment 12 is arranged in the plurality of building groups 11, and the power generation equipment 12 is used to generate electricity through power generation components such as photovoltaic components, fuel cells and energy storage batteries. Since the power generation equipment 12 is connected to the DC grid 13, the DC grid 13 can obtain the various energy sources in the power generation equipment 12 and the power demand of the power system, and regulate the various energy sources in the power generation equipment 12 according to the power demand of the power system, so that the regulated various energy sources can be used to supply power to the plurality of building groups 11.

[0049] In the above-mentioned power system, the power system includes multiple building complexes, power generation equipment and a DC power grid, the power generation equipment includes photovoltaic modules, fuel cells and energy storage batteries; the power generation equipment is arranged in multiple building complexes, and the power generation equipment is connected to the DC power grid; the DC power grid is used to supply power to multiple building complexes by regulating the various energy sources in the power generation equipment. In the embodiment of the present application, photovoltaic modules, fuel cells and energy storage batteries can be used as power generation equipment, that is, distributed power generation equipment using clean energy as fuel can be used to generate electricity, and a DC power grid can be used to supply power to multiple building complexes by regulating the various energy sources in the power generation equipment. It can make full use of renewable clean energy through regulation and effectively configure and manage energy, so it can improve the utilization rate of low-carbon energy in the power system and greatly reduce carbon emissions in building energy use.

[0050] In one embodiment, Figure 2 As shown, the power system further includes a first AC grid 14 and a second AC grid 15, the voltage of the first AC grid 14 is higher than the voltage of the second AC grid 15; the first AC grid 14 is connected to the second AC grid 15, and the second AC grid 15 is connected to the DC grid 13;

[0051] The first AC power grid 14 is used to transmit power to each building complex;

[0052] The second AC power grid 15 is used to transmit power to each building in the building complex.

[0053] The voltage of the first AC power grid 14 is higher than the voltage of the second AC power grid 15. Preferably, the first AC power grid 14 may be a 10 kV medium voltage AC power grid, and the second AC power grid 15 may be a 380 V AC power grid.

[0054] In the embodiment of the present application, optionally, the first AC grid 14 can be directly connected to the second AC grid 15, and the second AC grid 15 can be directly connected to the DC grid 13. Alternatively, in one embodiment, the power system further includes a converter and a transformer, so the DC grid 13 is connected to the second AC grid 15 through the converter, and the second AC grid 15 can be connected to the first AC grid 14 through the transformer. The converter can be a bidirectional AC / DC (Alternating Current / Direct Current, alternating current / direct current) converter.

[0055] Since the first AC grid 14 is connected to the second AC grid 15, and the second AC grid 15 is connected to the DC grid 13, the first AC grid 14 can be used to transmit and distribute electricity to different building complexes in the building area, and the second AC grid 15 can be used to supply and distribute electricity to different buildings in the same building complex, that is, the DC grid 13 can be incorporated into the second AC grid 15 in the building complex through a converter to provide electricity to each building in the building complex to meet the energy needs of lighting sockets, air-conditioning systems, special electrical equipment, etc. in each building, and the DC grid 13 can be used to uniformly dispatch and control the distributed energy of the power generation equipment 12 in the same building complex, thereby improving the utilization rate of low-carbon energy in the power system.

[0056] In this embodiment, the power system also includes a first AC power grid and a second AC power grid, and the voltage of the first AC power grid is higher than the voltage of the second AC power grid; the first AC power grid is connected to the second AC power grid, and the second AC power grid is connected to the DC power grid. Based on this, the first AC power grid can be used to transmit power to each building complex, and the second AC power grid can be used to transmit power to each building in the building complex, so that the DC power grid connected to the second AC power grid can perform unified energy scheduling and control of the distributed energy of the power generation equipment in the same building complex, so that energy allocation and management can be effectively performed, and the utilization rate of low-carbon energy in the power system can be improved.

[0057] In one embodiment, in combination Figure 2 As shown, the above-mentioned power system further includes a gas component 16 and a heat storage component 17, and the gas component 16 is connected to the DC power grid 13;

[0058] The gas assembly 16 and the fuel cell are used to provide thermal resources for the plurality of building groups 11;

[0059] The heat storage component 17 is used to store thermal resources.

[0060] Among them, the gas components may include but are not limited to gas boilers, electric boilers, etc., the heat storage components may include but are not limited to heat storage water tanks, etc., and the thermal resources may include but are not limited to hot water, etc.

[0061] Since the main energy needs of the building complex involving residential functions are electricity and hot water, the embodiment of the present application can adopt a distributed energy system composed of SOFC+photovoltaic+energy storage, which can not only provide electricity for multiple building complexes, but also provide hot water for multiple building complexes. Specifically, the gas component 16 is connected to the DC power grid 13, and the heat storage component 17 is connected to the gas component 16 and the fuel cell. Based on this, the waste heat of the fuel cell can be used to produce hot water by heat recovery to provide thermal resources for each building in the multiple building complexes 11, and the gas component 16 can be used to supplement the hot water consumption, and the heat storage component 17 can be used to collect the thermal resources provided by the gas component 16 and the fuel cell, and store the thermal resources to realize the energy storage function, thereby solving the problem of mismatch between hot water supply and demand. In addition, the above-mentioned power system can also include a gas boiler, and natural gas can be used to provide energy for the gas boiler and SOFC, so that the waste heat of the gas boiler and SOFC can be used to provide thermal resources for each building in the multiple building complexes 11.

[0062] In this embodiment, the power system also includes a gas component and a heat storage component. The gas component is connected to the DC power grid; the gas component and the fuel cell are used to provide thermal resources for multiple building complexes; the heat storage component is used to store thermal resources. In this way, the supply and storage of thermal resources can be achieved through the mutual cooperation between the gas component, the fuel cell and the heat storage component to solve the problem of mismatch between hot water supply and demand.

[0063] In one embodiment, in combination Figure 2 As shown, the above power generation equipment also includes a charging pile, which is connected to the DC power grid.

[0064] In the embodiment of the present application, the above-mentioned power generation equipment may include photovoltaic components, fuel cells, energy storage batteries and charging piles. In this way, a distributed energy system composed of SOFC+photovoltaic+energy storage can be used to provide electricity to multiple building complexes through the above-mentioned multiple power generation equipment. The distributed energy in the embodiment of the present application is not connected to the grid for electricity sales, and the self-consumption of local new energy can be achieved, that is, through the operation of the energy storage battery, the energy balance of power supply and power consumption can be coordinated to achieve self-generation and self-use, and power generation does not go online. At the same time, the distributed energy in the power generation equipment can be regulated in combination with the DC power grid, which can not only greatly increase the proportion of distributed low-carbon energy use and improve energy utilization efficiency, but also simplify the architecture of the power system, taking into account the energy-saving requirements of the building complex, and can reduce the energy consumption of the building itself by 40%.

[0065] In one embodiment, the photovoltaic modules are arranged on the roofs and facades of each building in a plurality of building complexes.

[0066] In the embodiment of the present application, photovoltaic modules can be installed on the available area on the roof and facade of each building in the multiple building complexes to effectively realize photovoltaic power generation. For example, 50% of the roof and 30% of the facade of each building in the multiple building complexes can be used as the installation area of ​​photovoltaic modules, and solar photovoltaic modules can be installed on the installation area. Generally, the unit area power of roof photovoltaic is 200Wp / m 2 The unit area power of the facade photovoltaic is 140Wp / m 2 .

[0067] Based on the above embodiments, it can be seen that the present application can achieve the following effects:

[0068] First, it can conduct centralized energy management and control. Specifically, distributed energy such as photovoltaics, energy storage, and fuel cells in the area where multiple building clusters are located can be connected to the DC microgrid, and energy management and control can be achieved using the DC microgrid. The DC microgrid interacts bidirectionally with the 380V AC grid in the area where the building cluster is located through a grid connection point. In this way, the output power and / or input power of each distributed energy can be centrally dispatched in the DC microgrid, which can reduce the impact of distributed energy on the AC grid and improve the management and control efficiency of distributed energy.

[0069] Second, it can improve energy efficiency. Specifically, according to the scale of renewable energy in the area where multiple building complexes are located, the level of the DC microgrid is determined to be 750V, so that the application of high voltage reduces the power transmission and distribution current, reduces power loss in the power grid, and can improve the efficiency of power transmission and distribution and energy management. Compared with a 375V DC bus, a 750V DC microgrid can reduce the cable diameter and converter configuration capacity, thereby saving resources and improving energy efficiency.

[0070] Third, it can achieve low-carbon energy use. Specifically, the available installation area on the roof and facade of the building can be fully utilized to lay photovoltaic modules to achieve renewable energy generation, and SOFC can be used to burn natural gas, hydrogen and other clean energy to generate electricity and produce hot water. In this way, carbon emissions in the energy utilization process can be greatly reduced, and the advantages of clean energy resources can be fully explored.

[0071] Fourth, DC microgrids can be used to connect new energy distributed generation, regional power grids and users in building complexes into an energy system, which not only improves the utilization rate of solar energy in the area where the building complex is located, but also optimizes energy management and regulation methods, greatly exerting the advantages of hybrid microgrids.

[0072] In one embodiment, Figure 3 As shown, a power generation method of an electric power system is provided, and the method is applied to the electric power system in any one of the above embodiments as an example for description, including:

[0073] S201, obtaining the power generation of photovoltaic modules in the power system.

[0074] In the embodiment of the present application, the power system can optionally collect the power generation of the photovoltaic components in the power system in real time; or the power system can also collect the power generation of the photovoltaic components in the power system at a fixed time; or the power system can also collect the power generation of the photovoltaic components in the power system after receiving the acquisition instruction. Of course, the embodiment of the present application does not limit the specific implementation method for obtaining the power generation of the photovoltaic components in the power system.

[0075] S202, determining the power generation of the fuel cell and the capacity of the energy storage battery in the power system according to the power generation of the photovoltaic module.

[0076] In the embodiment of the present application, the power system can optionally determine the power generation of the fuel cell and the capacity of the energy storage battery in the power system at the same time based on the power generation of the photovoltaic module; or, the power system can first determine the power generation of the fuel cell in the power system based on the power generation of the photovoltaic module, and then determine the capacity of the energy storage battery in the power system; or, the power system can first determine the capacity of the energy storage battery in the power system based on the power generation of the photovoltaic module, and then determine the power generation of the fuel cell in the power system. Of course, the embodiment of the present application does not limit the order and specific implementation method of obtaining the power generation of the fuel cell and the capacity of the energy storage battery.

[0077] S203, supplying power to multiple buildings in the power system according to the power generation of the photovoltaic modules, the power generation of the fuel cells and the capacity of the energy storage batteries.

[0078] In an embodiment of the present application, the DC power grid in the power system can pre-acquire the various energy sources in the power generation equipment and the power demand of the power system, and according to the power demand of the power system, combined with the power generation of the photovoltaic components, the power generation of the fuel cell and the capacity of the energy storage battery, regulate the various energy sources in the power generation equipment, so that the regulated energy sources can be used to power multiple buildings in the power system.

[0079] In the power generation method of the above-mentioned power system, the power generation of the photovoltaic components in the power system is obtained; the power generation of the fuel cell and the capacity of the energy storage battery in the power system are determined according to the power generation of the photovoltaic components; and the power generation of the photovoltaic components, the power generation of the fuel cell and the capacity of the energy storage battery are used to supply power to multiple building groups in the power system. In the embodiment of the present application, the photovoltaic components, fuel cells and energy storage batteries can be used as power generation equipment, that is, distributed power generation equipment using clean energy as fuel can be used to generate power, and a DC power grid can be used to control the various energy sources in the power generation equipment to supply power to multiple building groups. Through control, renewable clean energy can be fully utilized, and energy allocation and management can be effectively performed, so the utilization rate of low-carbon energy in the power system can be improved, and carbon emissions in building energy consumption can be greatly reduced.

[0080] In one embodiment, a method for determining the power generation of a fuel cell and the capacity of an energy storage battery is provided, that is, the “determining the power generation of a fuel cell and the capacity of an energy storage battery in a power system according to the power generation of a photovoltaic module” in the above S202, including:

[0081] The capacity of the energy storage battery is determined based on the power generation of the photovoltaic panels, the power consumption of each building in the multiple building complexes, and the power of the energy storage battery.

[0082] The power generation of the fuel cell is determined based on the power generation of the photovoltaic modules and the power consumption of each building.

[0083] In the embodiment of the present application, the power system can determine the power consumption of each building in the multiple building complexes in advance based on the dynamic energy consumption index (such as different power consumption during the day and at night) and the building area, and calculate the consumption of thermal resources by the number of users, so that the total energy consumption of the building complex can be determined based on the power consumption of each building and the consumption of thermal resources of each building. In addition, the power system can also obtain the power of the energy storage battery.

[0084] Based on this, the power system can determine the capacity of the energy storage battery according to the power generation of the photovoltaic modules, the power consumption of each building in the multiple building complexes, and the power of the energy storage battery. For example, if the building complex includes a school campus, in order to ensure that the energy storage battery can fully absorb the photovoltaic power generation during the winter and summer vacations, the calculation formula for determining the capacity of the energy storage battery can be shown in the following formulas (1)-(2).

[0085]

[0086]

[0087] In the formula, Q BES is the capacity of the energy storage battery, P BES，rated is the power of the energy storage battery, P kbuilding is the hourly power consumption of each building during the preset time period during winter and summer vacations, P k PV is the hourly power generation of the photovoltaic module. BES With P BES，rated All values ​​are not less than 0.

[0088] Taking the electricity usage during holidays in a school campus as an example, when the power generation of the photovoltaic module is greater than the total power consumption of each building in the school campus, the energy storage battery can be charged and the capacity of the energy storage battery after charging can be determined; when the power generation of the photovoltaic module is less than the total power consumption of each building in the school campus, the energy storage battery can be discharged to provide electricity for the school campus.

[0089] The power system can also determine the power generation of the fuel cell based on the power generation of the photovoltaic module and the power consumption of each building, and thus determine the power generation of the fuel cell based on the power generation of the fuel cell. For example, since the power generation of the fuel cell SOFC must be guaranteed to be self-consumed by the building complex, and it is necessary to ensure that the SOFC can continue to operate at a load rate greater than 50%, the calculation formula for determining the power generation of the fuel cell can be shown in the following formula (3).

[0090]

[0091] Where P SOFC，rated is the power generated by the fuel cell, P k building is the hourly electricity consumption of each building on a typical day (e.g., a school day in the non-cooling season), P k PV is the hourly power generation of the photovoltaic module. SOFC，rated A value not less than 0.

[0092] In this embodiment, the capacity of the energy storage battery is determined according to the power generation of the photovoltaic module, the power consumption of each building in the multiple building complexes, and the power of the energy storage battery; the power generation of the fuel cell is determined according to the power generation of the photovoltaic module and the power consumption of each building. In this way, by fully exploring the renewable energy in the building complex, the energy storage battery can be used to improve the utilization rate of solar power generation in scenarios with low building utilization (such as winter and summer vacations), and SOFCs that use clean energy as fuel and have high energy efficiency can be used to provide electricity and hot water for the building complex, which can maximize the utilization of distributed energy, improve power supply efficiency, and further reduce carbon emissions. In addition, through solar power generation and the use of SOFC to simultaneously supply electricity and hot water, the system operation and maintenance costs can be reduced by 36%.

[0093] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0094] Based on the same inventive concept, the embodiment of the present application also provides a power generation device for an electric power system for implementing the power generation method of the electric power system involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of the power generation device for one or more electric power systems provided below can refer to the limitations of the power generation method for the electric power system above, and will not be repeated here.

[0095] In an exemplary embodiment, Figure 4 As shown, a power generation device of an electric power system is provided, comprising: an acquisition module 31, a determination module 32 and a power supply module 33, wherein:

[0096] The acquisition module 31 is used to acquire the power generation of the photovoltaic components in the power system.

[0097] The determination module 33 is used to determine the power generation of the fuel cell and the capacity of the energy storage battery in the power system according to the power generation of the photovoltaic module.

[0098] The power supply module 33 is used to supply power to multiple buildings in the power system according to the power generation of the photovoltaic modules, the power generation of the fuel cells and the capacity of the energy storage batteries.

[0099] In one embodiment, the determination module 33 includes:

[0100] A first capacity determination unit, configured to determine the capacity of the energy storage battery according to the power generation of the photovoltaic module, the power consumption of each building in the plurality of building groups, and the power of the energy storage battery;

[0101] The second capacity determination unit is used to determine the power generation of the fuel cell according to the power generation of the photovoltaic module and the power consumption of each building.

[0102] Each module in the power generation device of the above power system can be implemented in whole or in part by software, hardware and a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each module.

[0103] In an exemplary embodiment, a computer device is provided. The computer device may be a server, or the computer device may be a terminal. The internal structure diagram thereof may be as follows: Figure 5 As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a power generation method of an electric power system is implemented. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0104] Those skilled in the art will understand that Figure 5 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0105] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0106] Obtain the power generation of photovoltaic modules in the power system;

[0107] Determine the power generation of the fuel cell and the capacity of the energy storage battery in the power system based on the power generation of the photovoltaic module;

[0108] Power is supplied to multiple buildings in the power system based on the power generation of photovoltaic panels, the power generation of fuel cells and the capacity of energy storage batteries.

[0109] In one embodiment, the power generation of the fuel cell and the capacity of the energy storage battery in the power system are determined according to the power generation of the photovoltaic assembly, and the processor further implements the following steps when executing the computer program:

[0110] Determine the capacity of the energy storage battery based on the power generation of the photovoltaic modules, the power consumption of each building in the multiple building complexes, and the power of the energy storage battery;

[0111] The power generation of the fuel cell is determined based on the power generation of the photovoltaic modules and the power consumption of each building.

[0112] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0113] Obtain the power generation of photovoltaic modules in the power system;

[0114] Determine the power generation of the fuel cell and the capacity of the energy storage battery in the power system based on the power generation of the photovoltaic module;

[0115] Power is supplied to multiple buildings in the power system based on the power generation of photovoltaic panels, the power generation of fuel cells and the capacity of energy storage batteries.

[0116] In one embodiment, the power generation of the fuel cell and the capacity of the energy storage battery in the power system are determined according to the power generation of the photovoltaic assembly, and the computer program further implements the following steps when executed by the processor:

[0117] Determine the capacity of the energy storage battery based on the power generation of the photovoltaic modules, the power consumption of each building in the multiple building complexes, and the power of the energy storage battery;

[0118] The power generation of the fuel cell is determined based on the power generation of the photovoltaic modules and the power consumption of each building.

[0119] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0120] Obtain the power generation of photovoltaic modules in the power system;

[0121] Determine the power generation of the fuel cell and the capacity of the energy storage battery in the power system based on the power generation of the photovoltaic module;

[0122] Power is supplied to multiple buildings in the power system based on the power generation of photovoltaic panels, the power generation of fuel cells and the capacity of energy storage batteries.

[0123] In one embodiment, the power generation of the fuel cell and the capacity of the energy storage battery in the power system are determined according to the power generation of the photovoltaic assembly, and the computer program further implements the following steps when executed by the processor:

[0124] Determine the capacity of the energy storage battery based on the power generation of the photovoltaic modules, the power consumption of each building in the multiple building complexes, and the power of the energy storage battery;

[0125] The power generation of the fuel cell is determined based on the power generation of the photovoltaic modules and the power consumption of each building.

[0126] It should be noted that the user information (including but not limited to relevant information of users in the building complex, user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0127] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0128] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0129] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A power system, characterized in that: The power system comprises: a plurality of building groups, power generation equipment and a DC power grid, wherein the power generation equipment comprises a photovoltaic module, a fuel cell and an energy storage battery; the power generation equipment is arranged in the plurality of building groups, and the power generation equipment is connected to the DC power grid; The DC power grid is used to supply power to the multiple buildings by regulating various energy sources in the power generation equipment.

2. The power system according to claim 1, characterized in that: The power system further includes a first AC power grid and a second AC power grid, wherein the voltage of the first AC power grid is higher than the voltage of the second AC power grid; the first AC power grid is connected to the second AC power grid, and the second AC power grid is connected to the DC power grid; The first AC power grid is used to transmit power to each of the building complexes; The second AC power grid is used to transmit electricity to each building in the building complex.

3. The power system according to claim 2, characterized in that: The power system further includes a converter and a transformer. The DC power grid is connected to the second AC power grid via the converter, and the second AC power grid is connected to the first AC power grid via the transformer.

4. The power system according to any one of claims 1 to 3, characterized in that: The power system further comprises a gas component and a heat storage component, wherein the gas component is connected to the DC power grid; The gas assembly and the fuel cell are used to provide thermal resources for the multiple building complexes; The heat storage component is used to store the thermal resources.

5. The power system according to any one of claims 1 to 3, characterized in that: The power generation equipment also includes a charging pile, and the charging pile is connected to the DC power grid.

6. The power system according to any one of claims 1 to 3, characterized in that: The photovoltaic components are arranged on the roof and facade of each building in the plurality of building groups.

7. A method for generating electricity in an electric power system, characterized in that: Applied to the power system according to any one of claims 1 to 6, the method comprises: Obtaining power generation of photovoltaic modules in the power system; Determining the power generation of the fuel cell and the capacity of the energy storage battery in the power system according to the power generation of the photovoltaic module; Power is supplied to a plurality of buildings in the power system according to the power generation of the photovoltaic module, the power generation of the fuel cell and the capacity of the energy storage battery.

8. The method according to claim 7, characterized in that Determining the power generation of the fuel cell and the capacity of the energy storage battery in the power system according to the power generation of the photovoltaic assembly includes: Determining the capacity of the energy storage battery according to the power generation of the photovoltaic module, the power consumption of each building in the plurality of building groups and the power of the energy storage battery; The power generation of the fuel cell is determined according to the power generation of the photovoltaic module and the power consumption of each building.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to claim 7 or 8 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to claim 7 or 8 are implemented.

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