Comprehensive energy system for zero-carbon park

Abstract

The invention discloses an integrated energy system for a zero-carbon park, and relates to the technical field of energy integration. The system comprises an energy production module and an energy conversion and output module which are used for being deployed in a zero-carbon park, and the energy production module comprises a photovoltaic photo-thermal integrated assembly unit, a vertical axis wind turbine and a standby power supply unit. The energy conversion and output module comprises a cold storage unit, a phase change heat storage unit, an electricity storage unit, a photovoltaic direct-driven variable-frequency centrifugal water chilling unit / multi-connected air conditioning unit and a heat pump subsystem, and through the connection relation of the cold storage unit, the phase change heat storage unit, the electricity storage unit, the photovoltaic direct-driven variable-frequency centrifugal water chilling unit / multi-connected air conditioning unit and the heat pump subsystem, the obtained comprehensive energy system can have the characteristics of renewable energy source integration, multi-energy complementation, multi-mode energy storage, modular design and the like. Therefore, efficient collaborative supply of electricity, heat, cold and the like can be achieved, efficient utilization of energy in the park is facilitated, and the system is particularly suitable for scenes such as industrial parks and science and technology parks which have high energy consumption and need low-carbon energy supply, and practical application and popularization are facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of comprehensive energy, and particularly relates to a comprehensive energy system for a zero-carbon park. Background Art

[0002] With the intensification of global climate change and energy crisis, the concept of zero-carbon parks has gradually attracted the attention of all sectors of society. The zero-carbon park aims to achieve efficient utilization of energy and ultimately zero carbon emissions within the park by integrating various clean energy sources and efficient energy utilization technologies.

[0003] The integrated energy system (IES) at the zero-carbon park level has become the focus of achieving energy conservation, carbon reduction, quality improvement, and efficiency increase. However, the integrated energy system at the park level has characteristics such as source-network-load-storage integration, multi-energy complementarity, and dynamic game between supply and demand sides, making its optimal operation technology face many challenges such as strong uncertainty and unclear coupling mechanisms.

[0004] Currently, the existing integrated energy systems have the following defects: (1) Low energy efficiency: Traditional energy systems often rely mainly on a single energy form and cannot make full use of multiple energy sources, resulting in energy waste; (2) Insufficient utilization of renewable energy: The access ratio of renewable energy in the existing energy systems is relatively low, and the regulation ability is limited, making it difficult to meet the diverse energy demands of the park; (3) Backward energy-saving and emission-reduction technologies: Lack of efficient energy storage and intelligent regulation technologies, resulting in low energy utilization efficiency and difficult effective control of carbon emissions; (4) Insufficient multi-energy coupling: The collaborative supply ability of multiple forms of energy such as cold, heat, electricity, and steam is weak; (5) Low system integration: The existing energy systems lack unified management and optimization of multiple energy sources, energy storage devices, and load regulation, making it difficult to achieve true comprehensive energy management. Therefore, there is an urgent need to provide an integrated energy system that can achieve high energy consumption and low carbon emissions to meet the needs of zero-carbon parks. Summary of the Invention

[0005] The purpose of the present invention is to provide a comprehensive energy system for a zero-carbon park to solve the problem that the existing integrated energy systems are difficult to meet the needs of zero-carbon parks due to low energy efficiency, insufficient utilization of renewable energy, backward energy-saving and emission-reduction technologies, and insufficient multi-energy coupling.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The present invention provides an integrated energy system for a zero-carbon park, including an energy production module and an energy conversion and output module respectively used for deployment in the zero-carbon park. Among them, the energy production module includes a photovoltaic-thermal integrated component unit, a vertical-axis wind turbine, and a backup power supply unit, and the energy conversion and output module includes a chilled water storage unit, a phase change heat storage unit, an electricity storage unit, a photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit, and a heat pump subsystem;

[0008] The power output terminals of the photovoltaic-thermal integrated component unit, the vertical-axis wind turbine, and the backup power supply unit are respectively used to connect to the electrical loads in the zero-carbon park;

[0009] The power supply terminals of the chilled water storage unit are respectively connected to the power output terminals of the photovoltaic-thermal integrated component unit and the vertical-axis wind turbine, so as to make ice for chilled water storage during the valley electricity period in the zero-carbon park;

[0010] The heat source terminal of the phase change heat storage unit is connected to the waste heat output terminal of the photovoltaic-thermal integrated component unit, so as to cooperate with the chilled water storage unit for combined heat and cold supply in the zero-carbon park;

[0011] The charging terminals of the electricity storage unit are respectively connected to the power output terminals of the photovoltaic-thermal integrated component unit and the vertical-axis wind turbine, and the discharging terminal of the electricity storage unit is used to connect to the electrical loads in the zero-carbon park;

[0012] The power supply terminal of the photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit is connected to the power output terminal of the photovoltaic-thermal integrated component unit through a DC bus, so as to supply cooling for the zero-carbon park;

[0013] The heat source terminal of the heat pump subsystem is connected to the waste heat output terminal of the photovoltaic-thermal integrated component unit, so as to supply cooling and / or heating for the zero-carbon park.

[0014] Based on the above invention content, an integrated energy structure scheme suitable for a zero-carbon park is provided, that is, it includes an energy production module and an energy conversion and output module respectively used for deployment in the zero-carbon park. The energy production module includes a photovoltaic-thermal integrated component unit, a vertical-axis wind turbine, and a backup power supply unit, and the energy conversion and output module includes a chilled water storage unit, a phase change heat storage unit, an electricity storage unit, a photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit, and a heat pump subsystem. Through their connection relationships, the resulting integrated energy system can have the characteristics of integrating renewable energy, multi-energy complementarity, multi-mode energy storage, and modular design, etc. Furthermore, it can achieve efficient coordinated supply of electricity, heat, and cold, which is conducive to achieving efficient energy utilization in the park and is especially suitable for scenarios such as industrial parks and science and technology parks that have high energy consumption and require low-carbon energy supply, facilitating practical application and promotion.

[0015] In a possible design, the backup power supply unit includes an electrolytic water hydrogen production device and a hydrogen fuel cell subsystem, and the energy conversion and output module further includes a hydrogen energy storage unit;

[0016] The power supply terminals of the electrolytic water hydrogen production device are respectively connected to the power output terminals of the photovoltaic-thermal integrated component unit and the vertical axis wind turbine, so as to produce hydrogen and store energy during the valley electricity period in the zero-carbon park;

[0017] The hydrogen output terminal of the electrolytic water hydrogen production device is communicated with the hydrogen input terminal of the hydrogen energy storage unit, and the hydrogen output terminal of the hydrogen energy storage unit is communicated with the hydrogen input terminal of the hydrogen fuel cell subsystem / and the hydrogen supply terminal for communicating with the zero-carbon park;

[0018] The power output terminal of the hydrogen fuel cell subsystem is used to connect to the electrical load in the zero-carbon park;

[0019] The hot water output terminal of the hydrogen fuel cell subsystem is communicated with the heat source terminal of the heat pump subsystem and / or the hot water supply terminal for communicating with the zero-carbon park.

[0020] In a possible design, when the cold storage unit includes an absorption refrigeration unit, the hot water output terminal of the hydrogen fuel cell subsystem is communicated with the heat source terminal of the absorption refrigeration unit, so as to drive the absorption refrigeration unit to supply cooling for the zero-carbon park.

[0021] In a possible design, the heat source terminal of the phase change heat storage unit is also communicated with the hot water output terminal of the hydrogen fuel cell subsystem.

[0022] In a possible design, when the cold storage unit includes an absorption refrigeration unit, the waste heat output terminal of the photovoltaic-thermal integrated component unit is connected to the heat source terminal of the absorption refrigeration unit, so as to drive the absorption refrigeration unit to supply cooling for the zero-carbon park.

[0023] In a possible design, the energy conversion and output module further includes a steam co-generation unit for coupling with the phase change heat storage unit, and the steam output terminal of the steam co-generation unit is used to communicate with the steam supply terminal of the zero-carbon park.

[0024] In a possible design, it further includes a work scheduling module for deployment in the zero-carbon park, wherein the work scheduling instruction output terminal of the work scheduling module is respectively connected to the controlled terminals of the backup power supply unit and the energy conversion and output module.

[0025] In a possible design, the work scheduling module includes a database and a digital application support platform that are communicatively connected;

[0026] The database is used to combine the model library, solution library and / or operation database of the whole-process data of the integrated energy project, and support the planning application, design application, operation and maintenance optimization application and / or decision-making application of the integrated energy system;

[0027] The digital application support platform is used to connect the business flow, data flow and / or model flow of the integrated energy system based on the database, generate work mobilization instructions, drive business, load models and / or support work in real time, and coordinate all stages of the integrated energy business.

[0028] In one possible design, the database is used to connect the business flow, data flow, and / or model flow of the integrated energy system, generate work mobilization instructions in real time, drive business, load models, and / or support work, and coordinate all phases of the integrated energy business, including:

[0029] Based on digital twin technology, the integrated use of Internet of Things (IoT), intelligent sensing, big data analysis, and / or artificial intelligence (AI) technologies will enable real-time collection of on-site personnel data, equipment data, and / or environmental data by linking intelligent IoT devices distributed throughout the buildings in the zero-carbon campus. Based on the collected data, the system will provide indoor crowd flow monitoring, equipment failure warning and diagnosis, and / or abnormal energy consumption alarm functions.

[0030] And / or, based on the Transformer architecture, using the meteorological data of the area where the zero-carbon park is located and the historical load data of the zero-carbon park, predict the energy supply and demand of the zero-carbon park in the future period;

[0031] And / or, with the goal of economic optimization, combined with time-of-use electricity prices and carbon emission factors, an optimization algorithm is applied to search for the best energy storage strategy, and work scheduling instructions are generated based on the best energy storage strategy to maximize peak-valley arbitrage and carbon trading benefits.

[0032] In one possible design, a carbon management module for deployment in a zero-carbon park is further included, wherein the carbon management module includes a real-time carbon accounting platform and / or a carbon removal device;

[0033] A real-time carbon accounting platform, which uses carbon flow models to track direct and indirect carbon emissions from the zero-carbon park and connects to the carbon trading market to purchase carbon credits to offset excess carbon emissions;

[0034] Carbon removal devices, which absorb carbon emissions to reduce carbon emissions.

[0035] Beneficial effects of the above scheme:

[0036] (1) The present invention provides an integrated energy structure solution applicable to zero-carbon parks, which includes an energy production module and an energy conversion and output module respectively deployed in zero-carbon parks. The energy production module includes a photovoltaic-thermal integrated component unit, a vertical-axis wind turbine, and a backup power supply unit. The energy conversion and output module includes a cold storage unit, a phase change heat storage unit, an electricity storage unit, a photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit, and a heat pump subsystem. Through their connection relationships, the resulting integrated energy system can have the characteristics of integrating renewable energy, multi-energy complementarity, multi-mode energy storage, and modular design. Furthermore, it can achieve efficient coordinated supply of electricity, heat, and cold, facilitating the efficient utilization of energy within the park and being particularly suitable for scenarios such as industrial parks and science and technology parks that have high energy consumption and require low-carbon energy supply;

[0037] (2) It has the advantages of high-efficiency energy storage and time-sharing regulation: that is, by adopting advanced energy storage technologies, the problem of the volatility of renewable energy is solved;

[0038] (3) It has the advantages of multi-energy cascade utilization: that is, by using the waste heat of the photovoltaic-thermal integrated component unit to drive refrigeration / heating, and by realizing the "electricity-hydrogen-heat" dual-path conversion through the hydrogen energy subsystem, the comprehensive energy utilization rate can be increased to more than 65%;

[0039] (4) It has the advantages of dynamic energy storage coordination: that is, the cooling and heating loads can be jointly regulated through phase change heat storage and water energy storage, and the traditional heat storage efficiency bottleneck can be broken through by the self-adaptive adjustment technology of the distance between heat storage bricks;

[0040] (5) It has the advantages of a photovoltaic direct-drive system: that is, by directly connecting the DC output of the photovoltaic to the DC bus of the chiller / air conditioner unit, the energy losses in the links of photovoltaic output voltage stabilization, grid-connected inversion, and frequency conversion rectification can be saved, ensuring the utilization rate of photovoltaic direct drive;

[0041] (6) It has the advantages of: that is, through carbon capture and utilization technologies, the overall reduction of carbon emissions in the park is achieved;

[0042] (7) It has the advantages of multi-energy complementarity and intelligent regulation: that is, through the optimal allocation of multiple energies and intelligent regulation algorithms, the efficient utilization of energy is achieved;

[0043] (8) It has the advantages of realizing AI prediction: that is, based on the Transformer architecture, after inputting meteorological data and historical load data, the energy supply and demand in the future period can be predicted (the test error rate ≤ 5%);

[0044] (9) It has the advantages of an AI-driven carbon closed-loop: that is, through a scheduling algorithm that embeds carbon cost factors, the net carbon emissions in the park can be made to approach zero;

[0045] (10) realizes the on-site consumption and efficient utilization of low-grade electric power such as wind and solar power in a zero-carbon park, and also realizes the on-site consumption of new energy, which is convenient for practical application and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0047] Figure 1 It is a schematic structural diagram of the integrated energy system for a zero-carbon park provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the present invention in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the drawing structure is only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other embodiments can be obtained based on these embodiments. It should be noted here that the description of these embodiment modes is used to help understand the present invention, but does not constitute a limitation to the present invention.

[0049] It should be understood that although terms such as first and second etc. may be used herein to describe various objects, these objects should not be limited by these terms. These terms are only used to distinguish one object from another. For example, the first object can be called the second object, and similarly, the second object can be called the first object, without departing from the scope of the exemplary embodiments of the present invention.

[0050] It should be understood that for the term "and / or" that may appear in this article, it is only a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, or A and B exist simultaneously, etc. For another example, A, B, and / or C can mean any one of A, B, and C or any combination of them; for the term " / and" that may appear in this article, it is a description of another relationship between associated objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone or A and B exist simultaneously, etc. In addition, for the character " / " that may appear in this article, generally, it means that the associated objects before and after are in an "or" relationship.

[0051] EMBODIMENT

[0052] AsFigure 1 As shown, the integrated energy system provided in this embodiment and used for a zero-carbon park includes, but is not limited to, an energy production module and an energy conversion and output module respectively deployed in the zero-carbon park. Among them, the energy production module includes, but is not limited to, a photovoltaic-thermal integrated component unit, a vertical-axis wind turbine, and a backup power supply unit, etc. The energy conversion and output module includes, but is not limited to, a cold storage unit, a phase change heat storage unit, an electricity storage unit, a photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air-conditioning unit, and a heat pump subsystem, etc.; the power output terminals of the photovoltaic-thermal integrated component unit, the vertical-axis wind turbine, and the backup power supply unit are respectively used to connect to the electrical loads in the zero-carbon park; the power supply terminals of the cold storage unit are respectively connected to the power output terminals of the photovoltaic-thermal integrated component unit and the vertical-axis wind turbine to make ice for cold storage during the valley electricity period in the zero-carbon park; the heat source terminal of the phase change heat storage unit is connected to the waste heat output terminal of the photovoltaic-thermal integrated component unit to cooperate with the cold storage unit for combined cooling and heating supply in the zero-carbon park; the charging terminal of the electricity storage unit is respectively connected to the power output terminals of the photovoltaic-thermal integrated component unit and the vertical-axis wind turbine, and the discharging terminal of the electricity storage unit is used to connect to the electrical loads in the zero-carbon park; the power supply terminal of the photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air-conditioning unit is connected to the power output terminal of the photovoltaic-thermal integrated component unit through a DC bus to supply cooling for the zero-carbon park; the heat source terminal of the heat pump subsystem is connected to the waste heat output terminal of the photovoltaic-thermal integrated component unit to supply cooling and / or heating for the zero-carbon park.

[0053] As Figure 1 shown, in the specific structure of the integrated energy system, the photovoltaic-thermal integrated component unit is an existing energy device that uses solar energy to achieve synchronous power generation and heat collection, and can output both electrical energy and heat energy in the form of waste heat. The vertical-axis wind turbine is an existing energy device that uses wind energy to generate electricity, which can be adapted to low-wind-speed environments and form a wind-solar complementary subsystem with the photovoltaic-thermal integrated component unit to reduce the volatility of power generation. The backup power supply unit is used to start during the peak electricity period in the zero-carbon park (i.e., the high electricity price period when electricity consumption is concentrated and power supply is tight, usually during the day, such as 8:00 - 22:00, and the electricity price is significantly higher than the valley electricity period) to supplement the lacking electrical energy, and it can specifically but not limitedly be realized by using a fuel cell subsystem conventionally.

[0054] ​In the specific structure of the integrated energy system, the chilled water storage unit is used to make ice and store cold during the valley electricity period of the zero-carbon park (i.e., the low electricity price period when compared with the peak electricity period and when electricity consumption is not concentrated and power supply is not tense, usually at night) by using excess electric energy, so as to supply ice or provide a cold source for the zero-carbon park; preferably, when the chilled water storage unit includes but is not limited to an absorption refrigeration unit, the waste heat output end of the photovoltaic-thermal integrated component unit is connected to the heat source end of the absorption refrigeration unit to drive the absorption refrigeration unit to supply cold for the zero-carbon park. The phase change heat storage unit is used to achieve the purpose of waste heat storage, and specifically, but not limited to, paraffin / graphene composite phase change materials can be used to store heat. The electricity storage unit is used to charge and store excess electricity during the valley electricity period of the zero-carbon park and discharge it during the peak electricity period of the zero-carbon park to supplement the lacking electric energy, and specifically, but not limited to, lithium iron phosphate batteries can be used to achieve this. The photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit is an existing energy conversion device that converts the energy obtained from photovoltaic power generation into cold. Since it is directly connected to the photovoltaic-thermal integrated component unit through a DC bus, it can save energy losses in links such as photovoltaic output voltage stabilization, grid connection inversion, and frequency conversion rectification, and ensure the utilization rate of photovoltaic direct drive; specifically, the combined working modes of the photovoltaic-thermal integrated component unit and the photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit include but are not limited to a pure photovoltaic power generation mode (i.e., the photovoltaic-thermal integrated component unit does not supply power to the photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit for cooling), a photovoltaic direct-drive mode (i.e., the photovoltaic-thermal integrated component unit only supplies power to the photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit for cooling), a pure mains electricity air conditioner mode (i.e., only mains electricity supplies power to the photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit for cooling), a photovoltaic-mains electricity hybrid power supply mode (i.e., both the photovoltaic-thermal integrated component unit and mains electricity supply power to the photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit for cooling) and / or a photovoltaic direct-drive surplus electricity grid connection mode (i.e., the surplus electricity of the photovoltaic-thermal integrated component unit is supplied to the photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit for cooling through grid connection) and so on. The heat pump subsystem is an existing energy conversion device for realizing heat transfer. It can specifically adopt a structure in which an air source heat pump and a water source heat pump are connected in parallel, and combine water energy storage to output 7°C chilled water or 60°C hot water to meet the needs of central air conditioning and park processes.

[0055] Based on the foregoing detailed description of the integrated energy system, a comprehensive energy structure solution applicable to zero-carbon parks is provided, which includes an energy production module and an energy conversion and output module respectively deployed in the zero-carbon park. The energy production module includes a photovoltaic-thermal integrated component unit, a vertical-axis wind turbine, and a backup power supply unit. The energy conversion and output module includes a chilled water storage unit, a phase change heat storage unit, an electricity storage unit, a photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit, and a heat pump subsystem. Through their connection relationships, the resulting integrated energy system can have characteristics such as integrating renewable energy, multi-energy complementarity, multi-mode energy storage, and modular design. Furthermore, it can achieve efficient coordinated supply of electricity, heat, and cold, which is conducive to achieving efficient energy utilization in the park and is particularly suitable for scenarios with high energy consumption and the need for low-carbon energy supply, such as industrial parks and science and technology parks, facilitating practical application and promotion.

[0056] Preferably, the backup power supply unit includes, but is not limited to, an electrolytic water hydrogen production device and a hydrogen fuel cell subsystem, etc. The energy conversion and output module further includes, but is not limited to, a hydrogen energy storage unit, etc. The power supply end of the electrolytic water hydrogen production device is respectively connected to the power output ends of the photovoltaic-thermal integrated component unit and the vertical-axis wind turbine, so as to carry out hydrogen production and energy storage during the valley electricity period in the zero-carbon park. The hydrogen output end of the electrolytic water hydrogen production device is communicated with the hydrogen input end of the hydrogen energy storage unit, and the hydrogen output end of the hydrogen energy storage unit is communicated with the hydrogen input end of the hydrogen fuel cell subsystem / and is used to communicate with the hydrogen supply end of the zero-carbon park. The power output end of the hydrogen fuel cell subsystem is used to connect to the electrical load in the zero-carbon park. The hot water output end of the hydrogen fuel cell subsystem is communicated with the heat source end of the heat pump subsystem and / or is used to communicate with the hot water supply end of the zero-carbon park. The electrolytic water hydrogen production device is an existing device that uses PEM (Proton Exchange Membrane) electrolysis technology to produce hydrogen. The hydrogen fuel cell subsystem is used to convert hydrogen chemical energy into electrical energy and generate high-temperature hot water (such as 120°C high-temperature hot water). The hydrogen energy storage unit can specifically but is not limited to achieve the purpose of hydrogen storage by using the principle of metal hydride hydrogen storage. Through the foregoing specific structural design, the "electricity-hydrogen-heat" dual-path conversion can also be realized, further improving the comprehensive energy utilization rate (which can be increased to more than 65% through experiments).

[0057] More preferably, when the chilled water storage unit includes an absorption chiller, the hot water output end of the hydrogen fuel cell subsystem is communicated with the heat source end of the absorption chiller, so as to drive the absorption chiller to supply cooling for the zero-carbon park; and the heat source end of the phase change heat storage unit is also communicated with the hot water output end of the hydrogen fuel cell subsystem. In this way, the "electricity-hydrogen-heat" dual-path conversion and the improvement of the comprehensive energy utilization rate can be further realized.

[0058] Preferably, the energy conversion and output module further includes, but is not limited to, a steam co-generation unit for coupling with the phase change heat storage unit, and the steam output end of the steam co-generation unit is used to communicate with the steam supply end of the zero-carbon park. The steam co-generation unit is used to supply steam to the zero-carbon park, for example, steam with a pressure of 0.5-1.6 MPa is output on demand. Through the foregoing specific structural design, the efficient collaborative supply of electricity, heat, and steam can also be achieved, and it is further applicable to scenarios such as industrial parks and science and technology parks that have high energy consumption and require low-carbon energy supply.

[0059] Preferably, it also includes but is not limited to a work scheduling module for deployment in the zero-carbon park, wherein the work scheduling instruction output end of the work scheduling module is respectively connected to the controlled end of the backup power supply unit and the energy conversion and output module. In this way, the backup power supply unit and each component in the energy conversion and output module can also be managed for work scheduling (specifically, it can be implemented by conventional changes based on existing work scheduling management technology), so that the resulting integrated energy system also has the characteristics of intelligent regulation, which is further conducive to achieving efficient energy utilization in the park. In order to further improve the intelligence of regulation, it is further preferred that the work scheduling module includes but is not limited to a database and a digital application support platform that are connected in communication; the database is used to combine the model library, solution library and / or operation database of the whole process data of the integrated energy project to support the planning application, design application, operation and maintenance optimization application and / or decision-making application of the integrated energy system; the digital application support platform is used to open up the business flow, data flow and / or model flow of the integrated energy system based on the database, generate work mobilization instructions, drive business, load models and / or support work in real time, and coordinate the full stage work of the integrated energy business, specifically including but not limited to: based on digital twin technology, comprehensively utilize Internet of Things technology, intelligent perception technology, big data Analytical technology and / or artificial intelligence technology, by linking the smart IoT devices distributed in the zero-carbon park buildings, collects on-site personnel data, on-site equipment data and / or on-site environmental data in real time, and provides indoor crowd distribution monitoring function, equipment failure warning and diagnosis function and / or energy consumption abnormality alarm function based on the collected data; and / or, based on the Transformer architecture, applies the meteorological data of the area where the zero-carbon park is located and the historical load data of the zero-carbon park to predict the energy supply and demand of the zero-carbon park in the future period; and / or, with the goal of optimal economic efficiency, combines time-of-use electricity prices and carbon emission factors, applies optimization algorithms to search for the optimal energy storage strategy, and generates work scheduling instructions based on the optimal energy storage strategy to maximize peak-valley arbitrage and carbon trading benefits. The aforementioned digital twin technology, Internet of Things technology, intelligent perception technology, big data analysis technology, and / or artificial intelligence technology are all existing technologies. The aforementioned Transformer architecture is an existing deep learning model architecture based on the self-attention mechanism. The aforementioned optimization algorithm can be, but is not limited to, existing particle swarm optimization algorithms, Newton optimization algorithms, genetic optimization algorithms, Grey Wolf optimization algorithms (Grey Wolf Algorithm), whale optimization algorithms, or tuna school optimization algorithms. Therefore, based on the specific working mode design of the aforementioned work scheduling module, it is possible to optimize system operation, improve management efficiency, and enhance energy utilization.

[0060] Preferably, it further includes, but is not limited to, a carbon management module for deployment in the zero-carbon park. Among them, the carbon management module includes, but is not limited to, a real-time carbon accounting platform and / or a carbon removal device, etc.; the real-time carbon accounting platform is used to track the direct carbon emissions and indirect carbon emissions of the zero-carbon park by applying a carbon flow model, and connect to the carbon trading market to purchase carbon sinks to offset the excess carbon emissions; the carbon removal device is used to absorb carbon emissions to reduce carbon emissions. The aforementioned carbon flow model is an existing core tool for quantifying the allocation of carbon emission responsibilities in the power system. Its core principle is based on the dynamic correlation between power flow tracking and carbon emission intensity. It is mainly applied to clarify the carbon emission responsibilities of each node in the power grid (such as power plants and users), support the design of carbon trading and emission reduction policies. Therefore, the real-time carbon accounting platform can be conventionally built. The carbon removal device specifically but not limited to uses rooftop greening and algae bioreactors to make the annual carbon absorption reach 5%-10% of the total emissions of the park. This can also make the resulting integrated energy system have the characteristics of low-carbon technology integration, which is further conducive to achieving efficient energy utilization in the park.

[0061] In summary, adopting the integrated energy system for zero-carbon parks provided by this embodiment has the following technical effects:

[0062] (1) This embodiment provides an integrated energy structure solution suitable for zero-carbon parks, that is, it includes an energy production module and an energy conversion and output module respectively for deployment in zero-carbon parks. The energy production module includes a photovoltaic-thermal integrated component unit, a vertical-axis wind turbine, and a standby power supply unit. The energy conversion and output module includes a chilled water storage unit, a phase change heat storage unit, an electricity storage unit, a photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air-conditioning unit, and a heat pump subsystem. Through their connection relationship, the resulting integrated energy system can have the characteristics of integrating renewable energy, multi-energy complementarity, multi-mode energy storage, and modular design. Furthermore, it can achieve efficient coordinated supply of electricity, heat, and cold, which is conducive to achieving efficient energy utilization in the park and is particularly suitable for scenarios with high energy consumption and the need for low-carbon energy supply, such as industrial parks and science and technology parks.

[0063] (2) It has the advantages of efficient energy storage and time-sharing regulation: that is, by adopting advanced energy storage technologies, the problem of the volatility of renewable energy is solved;

[0064] (3) It has the advantage of multi-energy cascade utilization: that is, by using the waste heat of the photovoltaic-thermal integrated component unit to drive refrigeration / heating, and through the hydrogen energy subsystem to achieve the "electricity-hydrogen-heat" dual-path conversion, the comprehensive energy utilization rate can be increased to more than 65%;

[0065] (4) It has the advantage of dynamic energy storage coordination: that is, the cooling and heating loads can be jointly regulated through phase change heat storage and water energy storage, and the traditional heat storage efficiency bottleneck can be broken through by the self-adaptive adjustment technology of the distance between heat storage bricks;

[0066] (5) It has the advantages of a photovoltaic direct drive system: that is, by directly connecting the DC output of the photovoltaic to the DC bus of the chiller / air conditioner unit, energy losses in links such as photovoltaic output voltage stabilization, grid-connected inversion, and frequency conversion rectification can be saved, ensuring the utilization rate of photovoltaic direct drive;

[0067] (6) It has the advantages: that is, through carbon capture and utilization technology, comprehensive reduction of carbon emissions in the park can be achieved;

[0068] (7) It has the advantages of multi-energy complementarity and intelligent regulation: that is, through the optimal allocation of multiple energies and intelligent regulation algorithms, efficient utilization of energy can be achieved;

[0069] (8) It has the advantage of realizing AI prediction: that is, based on the Transformer architecture, after inputting meteorological data and historical load data, the energy supply and demand in future periods can be predicted (the test error rate ≤ 5%);

[0070] (9) It has the advantage of an AI-driven carbon closed-loop: that is, through a scheduling algorithm embedded with a carbon cost factor, the net carbon emissions in the park can be made to approach zero;

[0071] (10) It realizes the on-site consumption and efficient utilization of low-grade electric power such as wind and solar power in a zero-carbon park, and also realizes the on-site consumption of new energy, which is convenient for practical application and promotion.

[0072] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated energy system for a zero-carbon park, characterized in that, It includes an energy production module and an energy conversion and output module respectively for deployment in a zero-carbon park. Among them, the energy production module includes a photovoltaic-thermal integrated component unit, a vertical-axis wind turbine, and a backup power supply unit. The energy conversion and output module includes a cold storage unit, a phase change heat storage unit, an electricity storage unit, a photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit, and a heat pump subsystem; The power output terminals of the photovoltaic-thermal integrated component unit, the vertical-axis wind turbine, and the backup power supply unit are respectively used to connect to the electrical loads in the zero-carbon park; The power supply terminals of the cold storage unit are respectively connected to the power output terminals of the photovoltaic-thermal integrated component unit and the vertical-axis wind turbine, so as to make ice for cold storage during the valley electricity period in the zero-carbon park; The heat source terminal of the phase change heat storage unit is connected to the waste heat output terminal of the photovoltaic-thermal integrated component unit, so as to cooperate with the cold storage unit to supply combined cooling and heating to the zero-carbon park; The charging terminals of the electricity storage unit are respectively connected to the power output terminals of the photovoltaic-thermal integrated component unit and the vertical-axis wind turbine, and the discharging terminal of the electricity storage unit is used to connect to the electrical loads in the zero-carbon park; The power supply terminal of the photovoltaic direct-drive variable-frequency centrifugal chiller / multi-connected air conditioner unit is connected to the power output terminal of the photovoltaic-thermal integrated component unit through a DC bus, so as to supply cooling to the zero-carbon park; The heat source terminal of the heat pump subsystem is connected to the waste heat output terminal of the photovoltaic-thermal integrated component unit, so as to supply cooling and / or heating to the zero-carbon park.

2. The integrated energy system according to claim 1, characterized in that, The backup power supply unit includes an electrolytic water hydrogen production device and a hydrogen fuel cell subsystem. The energy conversion and output module also includes a hydrogen energy storage unit; The power supply terminals of the electrolytic water hydrogen production device are respectively connected to the power output terminals of the photovoltaic-thermal integrated component unit and the vertical-axis wind turbine, so as to produce hydrogen for energy storage during the valley electricity period in the zero-carbon park; The hydrogen output terminal of the electrolytic water hydrogen production device is communicated with the hydrogen input terminal of the hydrogen energy storage unit, and the hydrogen output terminal of the hydrogen energy storage unit is communicated with the hydrogen input terminal of the hydrogen fuel cell subsystem / and the hydrogen supply terminal for communicating with the zero-carbon park; The power output terminal of the hydrogen fuel cell subsystem is used to connect to the electrical loads in the zero-carbon park; The hot water output terminal of the hydrogen fuel cell subsystem is communicated with the heat source terminal of the heat pump subsystem and / or the hot water supply terminal for communicating with the zero-carbon park.

3. The integrated energy system according to claim 2, characterized in that When the cold storage unit includes an absorption refrigeration unit, the hot water output terminal of the hydrogen fuel cell subsystem is communicated with the heat source terminal of the absorption refrigeration unit, so as to drive the absorption refrigeration unit to supply cooling to the zero-carbon park.

4. The integrated energy system according to claim 2, characterized in that, The heat source terminal of the phase change heat storage unit is also communicated with the hot water output terminal of the hydrogen fuel cell subsystem.

5. The integrated energy system according to claim 1, wherein When the cold storage unit includes an absorption refrigeration unit, the waste heat output terminal of the photovoltaic-thermal integrated component unit is connected to the heat source terminal of the absorption refrigeration unit, so as to drive the absorption refrigeration unit to supply cooling to the zero-carbon park.

6. The integrated energy system according to claim 1, wherein The energy conversion and output module also includes a steam combined supply unit for coupling with the phase change heat storage unit, and the steam output terminal of the steam combined supply unit is used to communicate with the steam supply terminal of the zero-carbon park.

7. The integrated energy system according to claim 1, characterized in that, It also includes a work scheduling module for deployment in the zero-carbon park. Among them, the work scheduling instruction output terminal of the work scheduling module is respectively connected to the controlled terminals of the backup power supply unit and the energy conversion and output module.

8. The integrated energy system according to claim 7, wherein, The work scheduling module includes a communication-connected database and a digital application support platform; Databases, which are used to combine model libraries, solution libraries, and / or operational databases with data from the entire process of integrated energy projects to support planning applications, design applications, operation and maintenance optimization applications, and / or decision-making applications for integrated energy systems; The digital application support platform is used to connect the business flow, data flow and / or model flow of the integrated energy system based on the database, generate work mobilization instructions, drive business, load models and / or support work in real time, and coordinate all stages of the integrated energy business.

9. The integrated energy system according to claim 8, wherein Based on the database, the integrated energy system's business flows, data flows, and / or model flows are connected. Work mobilization instructions are generated in real time to drive business, load models, and / or support work. This coordinates all phases of the integrated energy business, including: Based on digital twin technology, the integrated use of Internet of Things (IoT) technology, intelligent sensing technology, big data analysis technology, and / or artificial intelligence technology will enable real-time collection of on-site personnel data, on-site equipment data, and / or on-site environmental data by linking intelligent IoT devices distributed within zero-carbon campus buildings. Based on the collected data, the system will provide indoor crowd distribution monitoring, equipment fault early warning and diagnosis functions, and / or abnormal energy consumption alarm functions. And / or, based on the Transformer architecture, using the meteorological data of the area where the zero-carbon park is located and the historical load data of the zero-carbon park, predict the energy supply and demand of the zero-carbon park in the future period; And / or, with the goal of economic optimization, combined with time-of-use electricity prices and carbon emission factors, an optimization algorithm is applied to search for the best energy storage strategy, and work scheduling instructions are generated based on the best energy storage strategy to maximize peak-valley arbitrage and carbon trading benefits.

10. The integrated energy system according to claim 1, characterized in that, Also included is a carbon management module for deployment in a zero-carbon park, wherein the carbon management module includes a real-time carbon accounting platform and / or a carbon removal device; A real-time carbon accounting platform, which uses carbon flow models to track direct and indirect carbon emissions from the zero-carbon park and connects to the carbon trading market to purchase carbon credits to offset excess carbon emissions; Carbon removal devices, which absorb carbon emissions to reduce carbon emissions.

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