Electric heating hydrogen multi-energy flow collaborative management system and method for new energy system in cold region

Abstract

The invention relates to an electric heating hydrogen multi-energy flow collaborative management system and method for a new energy system in a cold region. The invention relates to the field of energy supply optimization of a multi-energy-flow system, and aims to realize gradient utilization of different grades of energy sources and give full play to the advantages of collaborative optimization and multi-energy complementation among multi-energy flows by coupling various energy sources such as electricity, heat and hydrogen and determining the coupling rule of the electric, thermal and hydrogen multi-energy flows in the conversion, transportation and storage processes. And a multi-energy flow matching mechanism in an integrated process of electrochemical energy storage and hydrogen production by electrolysis of water, hydrogen storage and hydrogen supply of a hydrogen refueling station, hydrogen storage and hydrogen use of a fuel cell and the like is deeply discussed. An online energy management platform is established and used for operation of the poly-generation integrated energy system, and planning scheduling and real-time regulation and control can be carried out according to multiple time scales such as the second scale, the minute scale and the day scale. Therefore, the energy industry structure can be upgraded, the energy production and utilization mode can be improved, and the consumption of renewable energy sources can be promoted.

Description

Technical Field

[0001] The present invention relates to the field of energy supply optimization of multi-energy flow systems, and is an electric-thermal-hydrogen multi-energy flow collaborative management system and method for cold-region new energy systems. Background Art

[0002] In cold environments, low temperatures are a very significant feature, which has many impacts on people's daily lives and work, among which the demand for heating is particularly prominent. Whether it is residents' home life or various industrial production, commercial office and other work scenes, they all rely on a stable and sufficient supply of heating to ensure that people can carry out activities in a suitable temperature environment and that equipment can operate normally.

[0003] At the same time, as a key equipment in the hydrogen production process, the working characteristics of the electrolyzer determine that it must be maintained at a specific working temperature to operate effectively. Since the temperature in cold regions is often at a low level, if effective heating and insulation measures are not taken, the electrolyzer will not only fail to work properly, but may even be damaged due to the low temperature. In the hydrogen production and subsequent compression processes, a large amount of waste heat will inevitably be generated. Most of this waste heat was originally wasted and not effectively utilized.

[0004] In view of the low temperature in cold regions, there is a need for heating in life and work, and the electrolyzer also needs to be heated and insulated to maintain the working temperature. Therefore, the waste heat generated during hydrogen production and compression can be used to preheat the electrolyzer for daily startup, thereby reducing the startup time. This project has designed a high-efficiency utilization plan for waste heat and waste hydrogen, forming a variety of energy utilization forms such as hydrogen-heat cogeneration and heat-power cogeneration. In addition, the station will adopt the "photovoltaic storage direct flexible" technology to achieve flexible and low-carbon operation.

[0005] In order to solve the problems of poor system stability, insufficient safety, low energy efficiency, and poor economic benefits faced in the large-scale production and comprehensive utilization of renewable energy hydrogen, it is necessary to conduct key technology research on the integrated application of large-scale hydrogen production, storage, and use. This project focuses on the needs of large-scale development and utilization of solar energy, with photovoltaic power generation and hydrogen production technology as the core, while combining the multi-scenario and multi-link application of fuel cell cogeneration, diversified energy storage, hydrogen refueling stations, and fuel cell heavy trucks. The successful implementation of this invention can gain a first-mover advantage in the field of renewable energy hydrogen production and comprehensive utilization in the future, open up important profit growth points, and provide important technical support for promoting the large-scale utilization of renewable energy in my country and the development of the entire hydrogen energy industry chain. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention couples various energy sources such as electricity, heat, and hydrogen, clarifies the coupling rules of electric, thermal, and hydrogen multi-energy flows in the process of conversion, transportation, and storage, realizes the cascade utilization of energy of different grades, and gives full play to the collaborative optimization and multi-energy complementary advantages between multi-energy flows. And in-depth discussion of the multi-energy flow matching mechanism in the integrated process of electrochemical energy storage and water electrolysis hydrogen production, hydrogen storage and hydrogen supply at hydrogen refueling stations, and hydrogen storage and fuel cell hydrogen use. Establish an online energy management platform for the operation of a multi-generation integrated energy system, which can be planned, scheduled, and controlled in real time for multiple time scales such as seconds, minutes, and days. This will help upgrade the energy industry structure, improve energy production and utilization methods, and promote the consumption of renewable energy, thereby solving the problems mentioned in the background technology. The present invention provides an electric, thermal, and hydrogen multi-energy flow collaborative management system and method for a new energy system in cold regions.

[0007] The present invention provides the following technical solutions:

[0008] An electric, thermal and hydrogen multi-energy flow collaborative management system for a new energy system in cold regions, the system comprising:

[0009] System thermodynamic process and energy flow analysis module: determine the coupling rules between the conversion, transportation and storage of the electric and thermal hydrogen multi-energy flows within the system, and determine the multi-energy flow matching mechanism of the integrated production, storage and use process such as electrochemical energy storage and water electrolysis hydrogen production, hydrogen storage and hydrogen supply to hydrogen refueling stations, and hydrogen storage and fuel cell hydrogen use;

[0010] Operation constraint module for multi-energy flow conversion, transportation and storage: Determine the relationship and connection between various components in the system, constrain the behavior of each component in the process of multi-energy flow conversion, transportation and storage, and utilize waste heat and waste hydrogen;

[0011] Intraday energy management and scheduling module: collect historical data to calculate the energy scheduling of each energy source in different time periods; and predict future energy demand based on the calculation results according to the objective function and constraints of intraday scheduling, and determine the optimal operation strategy for each energy source at the current moment.

[0012] Preferably, the system thermodynamic process and energy flow analysis module includes hydrogen fuel cells, heat storage equipment, electricity storage equipment, hydrogen storage equipment, PEM electrolyzer and alkaline electrolyzer. Through the system thermodynamic process and energy flow analysis, an electric-thermal-hydrogen multi-energy complementary heating system is formed to efficiently utilize the waste heat and waste hydrogen of the fuel cell to form energy utilization forms such as hydrogen-heat cogeneration and cogeneration, thereby realizing flexible and low-carbon operation of the site.

[0013] Preferably, the operation constraint module for multi-energy flow conversion, transportation and storage includes a hydrogen-to-thermal power link constraint module of a hydrogen fuel cell, a photovoltaic power generation equipment constraint module, a power storage equipment constraint module, a heat storage equipment constraint module, a waste heat heating module and a hydrogen storage equipment constraint module.

[0014] Preferably, the power flow: photovoltaic power generation is used to supply power to the electrolyzer first. Under normal photovoltaic energy conditions, the power is first used in the electrolyzer, which decomposes water into hydrogen and stores it; fuel cells are used to supply power to the plant area first: fuel cells are another power source and give priority to meeting the power needs of the plant area;

[0015] Excess power storage: When the power generated by photovoltaic power generation and the power supply of fuel cells meet all needs, the remaining power is stored in the hydrogen storage system for later use;

[0016] Response when photovoltaic power is insufficient: When photovoltaic power generation is insufficient, the system will call on the power generated by the hydrogen storage device and the fuel cell to ensure that the factory's electricity needs are met.

[0017] Preferably, the heat energy flow: gives priority to the use of heat generated by fuel cells: when the heating demand for the plant area is raised, the heat energy generated by the fuel cells is used as much as possible;

[0018] Excess heat storage: After meeting heating demand, the remaining heat is stored in a heat storage device for future use;

[0019] Strategy for solving insufficient supply: When the thermal energy supply is insufficient to meet demand, the heat in the thermal storage device will be used first to ensure continuous heating.

[0020] Preferably, the hydrogen energy flow: Prioritizes the use of produced hydrogen for power generation: The system will use the hydrogen produced by the electrolyzer for fuel cell power generation, improving the efficiency of energy use;

[0021] Residual hydrogen storage: When the priority demand for hydrogen use is met, the remaining hydrogen oil will be stored in the hydrogen storage device for supplying hydrogen refueling stations and heavy trucks.

[0022] Preferably, the intraday energy management and scheduling module includes: a capacity assessment module and a cascade scheduling module;

[0023] The capacity assessment module needs to input the historical data of integrated photovoltaic power generation, and use the historical and real-time data to analyze the performance and stability of photovoltaic power generation, so as to obtain the environmental influencing factors such as temperature and light related to various energy sources, so as to evaluate the availability of energy and generate a comprehensive assessment report based on the quality assessment results;

[0024] Cascade scheduling module: Based on historical data and energy deduction models, it predicts future energy demand and sets the priority of each energy source and the operation of each component in the system according to energy demand; formulates a cascade scheduling plan based on energy demand forecasts and priorities, and adjusts the scheduling plan in real time to respond to real-time renewable energy data and the actual operation of energy stations.

[0025] A method for coordinated management of electric, thermal and hydrogen multi-energy flows for a new energy system in cold regions, the method comprising the following steps:

[0026] Step 1: Collect data and integrate historical data of photovoltaic power generation;

[0027] Step 2: Input the integrated data into the data processing center, and use historical and real-time data to analyze the performance and stability of photovoltaic power generation, so as to obtain the temperature and light environment influencing factors related to various energy sources;

[0028] Step 3: Conduct a multi-energy flow assessment to evaluate the availability of photovoltaic power generation energy and predict future energy use;

[0029] Step 4: Forecast future energy demand based on historical data and energy deduction models;

[0030] Step 5: Set the priority of each energy source and the operation of each component in the system according to energy demand;

[0031] Step 6: Develop and execute a dispatch plan based on energy demand forecasts and priorities;

[0032] Step 7: Adjust and optimize the scheduling plan in real time to cope with the actual operation of the electric thermal hydrogen multi-energy flow system.

[0033] A computer-readable storage medium stores a computer program, which is executed by a processor to implement a method for coordinated management of electric, thermal and hydrogen multi-energy flows for a cold-region new energy system.

[0034] A computer device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, a method for coordinated management of electric, thermal and hydrogen multi-energy flows for a new energy system in cold regions is implemented.

[0035] The present invention has the following beneficial effects:

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] The present invention couples and integrates various energy conversion processes for green hydrogen production, storage and transportation, such as photovoltaic power generation, water electrolysis hydrogen production, hydrogen storage, gas stations and fuel cells. The present invention explores the multi-energy flow matching mechanism between electrochemical energy storage and water electrolysis hydrogen production, hydrogen storage and gas station hydrogen supply, and hydrogen storage and fuel cell hydrogen use, to support the operation of a multi-generation integrated energy system. The platform can effectively plan, schedule and control the system operation in real time on multiple time scales such as seconds, minutes and days, and proposes a multi-objective optimization operation strategy for the system. This will significantly improve the efficiency, robustness and economy of the multi-generation integrated energy system. In summary, the present invention can effectively solve the problems of poor system stability, insufficient safety, low energy efficiency and weak economic benefits faced in the process of large-scale new energy production and comprehensive utilization, and realize the efficient utilization of waste heat and waste hydrogen.

[0038] The present invention utilizes the multiple coupling mechanisms of power flow, heat flow and hydrogen flow in time and space of the integrated green hydrogen production, storage and use system to establish an electricity-heat-hydrogen multi-energy flow transport model and dynamic energy use characteristics;

[0039] The present invention utilizes the coordinated matching mechanism of thermal parameters of multiple components of the system "source-grid-storage-load" to study the multi-objective optimization operation strategy and dynamic control method of the operation status of the main components of the system and the storage status of electricity / hydrogen / heat that meet the needs of electric-thermal decoupling;

[0040] The present invention adopts a data-driven approach to study the distribution and transport characteristics of multi-objective coordinated regulation under a wide range of working conditions, and formulates an energy management strategy for a synergistic and efficient polygeneration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 Shown is a schematic diagram of the present invention;

[0043] Figure 2 Shown is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0044] The present invention is described in detail below in conjunction with specific embodiments. Specific embodiment one:

[0046] according to Figure 1 to Figure 2As shown, the specific optimization technical solution adopted by the present invention to solve the above technical problems is: the present invention relates to an electric thermal hydrogen multi-energy flow collaborative management system and method for cold-region new energy systems.

[0047] An electric, thermal and hydrogen multi-energy flow collaborative management system for a new energy system in cold regions, the system comprising:

[0048] System thermodynamic process and energy flow analysis module: determine the coupling rules between the conversion, transportation and storage of the electric and thermal hydrogen multi-energy flows within the system, and determine the multi-energy flow matching mechanism of the integrated production, storage and use process such as electrochemical energy storage and water electrolysis hydrogen production, hydrogen storage and hydrogen supply to hydrogen refueling stations, and hydrogen storage and fuel cell hydrogen use;

[0049] Operation constraint module for multi-energy flow conversion, transportation and storage: Determine the relationship and connection between various components in the system, constrain the behavior of each component in the process of multi-energy flow conversion, transportation and storage, and utilize waste heat and waste hydrogen;

[0050] Intraday energy management and scheduling module: collect historical data to calculate the energy scheduling of each energy source in different time periods; and predict future energy demand based on the calculation results according to the objective function and constraints of intraday scheduling, and determine the optimal operation strategy for each energy source at the current moment.

[0051] The present invention couples and integrates various energy conversion processes for green hydrogen production, storage and transportation, such as photovoltaic power generation, water electrolysis hydrogen production, hydrogen storage, gas stations and fuel cells. The present invention explores the multi-energy flow matching mechanism between electrochemical energy storage and water electrolysis hydrogen production, hydrogen storage and gas station hydrogen supply, and hydrogen storage and fuel cell hydrogen use, to support the operation of a multi-generation integrated energy system. The platform can effectively plan, schedule and control the system operation in real time on multiple time scales such as seconds, minutes and days, and proposes a multi-objective optimization operation strategy for the system. This will significantly improve the efficiency, robustness and economy of the multi-generation integrated energy system. In summary, the present invention can effectively solve the problems of poor system stability, insufficient safety, low energy efficiency and weak economic benefits faced in the process of large-scale new energy production and comprehensive utilization, and realize the efficient utilization of waste heat and waste hydrogen. Specific embodiment 2:

[0053] The difference between the second embodiment of the present application and the first embodiment is that:

[0054] The system thermodynamic process and energy flow analysis module includes hydrogen fuel cells, heat storage equipment, electricity storage equipment, hydrogen storage equipment, PEM electrolyzer and alkaline electrolyzer. Through the system thermodynamic process and energy flow analysis, an electric-thermal-hydrogen multi-energy complementary heating system is formed to efficiently utilize the waste heat and waste hydrogen of the fuel cell to form energy utilization forms such as hydrogen-heat cogeneration and cogeneration, thereby realizing flexible and low-carbon operation of the site. Specific embodiment three:

[0056] The difference between the third embodiment of the present application and the second embodiment is that:

[0057] The operation constraint modules for multi-energy flow conversion, transportation and storage include the hydrogen-to-thermal power link constraint module of the hydrogen fuel cell, the photovoltaic power generation equipment constraint module, the power storage equipment constraint module, the heat storage equipment constraint module, the waste heat heating module and the hydrogen storage equipment constraint module. Specific embodiment four:

[0059] The difference between the fourth embodiment of the present application and the third embodiment is that:

[0060] Power flow: Photovoltaic power generation gives priority to the electrolyzer. Under normal photovoltaic energy conditions, electricity is first used in the electrolyzer, which decomposes water into hydrogen and stores it. Fuel cells give priority to the plant: Fuel cells serve as another power source and give priority to meeting the power needs of the plant.

[0061] Excess power storage: When the power generated by photovoltaic power generation and the power supply of fuel cells meet all needs, the remaining power is stored in the hydrogen storage system for later use;

[0062] Response when photovoltaic power is insufficient: When photovoltaic power generation is insufficient, the system will call on the power generated by the hydrogen storage device and the fuel cell to ensure that the factory's electricity needs are met. Specific embodiment five:

[0064] The difference between the fifth embodiment of the present invention and the fourth embodiment is that:

[0065] Heat flow: Prioritize the use of heat generated by fuel cells: When the heating demand for the plant area is raised, try to give priority to the use of heat generated by fuel cells;

[0066] Excess heat storage: After meeting heating demand, the remaining heat is stored in a heat storage device for future use;

[0067] Strategy for solving insufficient supply: When the thermal energy supply is insufficient to meet demand, the heat in the thermal storage device will be used first to ensure continuous heating. Specific embodiment six:

[0069] The difference between the sixth embodiment of the present invention and the fifth embodiment is that:

[0070] Hydrogen energy flow: Prioritize the use of produced hydrogen for power generation: The system will use the hydrogen produced by the electrolyzer for fuel cell power generation to improve energy efficiency;

[0071] Residual hydrogen storage: When the priority demand for hydrogen use is met, the remaining hydrogen oil will be stored in the hydrogen storage device for supplying hydrogen refueling stations and heavy trucks. Specific embodiment seven:

[0073] The difference between the seventh embodiment of the present invention and the sixth embodiment is that:

[0074] The intraday energy management and scheduling module includes: capacity assessment module and cascade scheduling module;

[0075] The capacity assessment module needs to input the historical data of integrated photovoltaic power generation, and use the historical and real-time data to analyze the performance and stability of photovoltaic power generation, so as to obtain the environmental influencing factors such as temperature and light related to various energy sources, so as to evaluate the availability of energy and generate a comprehensive assessment report based on the quality assessment results;

[0076] Cascade scheduling module: Based on historical data and energy deduction models, it predicts future energy demand and sets the priority of each energy source and the operation of each component in the system according to energy demand; formulates a cascade scheduling plan based on energy demand forecasts and priorities, and adjusts the scheduling plan in real time to respond to real-time renewable energy data and the actual operation of energy stations. Specific embodiment eight:

[0078] The difference between the eighth embodiment of the present invention and the seventh embodiment is that:

[0079] The present invention provides an electric, thermal and hydrogen multi-energy flow coordinated management method for a new energy system in cold regions, the method comprising the following steps:

[0080] Step 1: Collect data and integrate historical data of photovoltaic power generation;

[0081] Step 2: Input the integrated data into the data processing center, and use historical and real-time data to analyze the performance and stability of photovoltaic power generation, so as to obtain the temperature and light environment influencing factors related to various energy sources;

[0082] Step 3: Conduct a multi-energy flow assessment to evaluate the availability of photovoltaic power generation energy and predict future energy use;

[0083] Step 4: Forecast future energy demand based on historical data and energy deduction models;

[0084] Step 5: Set the priority of each energy source and the operation of each component in the system according to energy demand;

[0085] Step 6: Develop and execute a dispatch plan based on energy demand forecasts and priorities;

[0086] Step 7: Adjust and optimize the scheduling plan in real time to cope with the actual operation of the electric thermal hydrogen multi-energy flow system.

[0087] The present invention couples and integrates various energy conversion processes for green hydrogen production, storage and transportation, such as photovoltaic power generation, water electrolysis hydrogen production, hydrogen storage, gas stations and fuel cells. The present invention explores the multi-energy flow matching mechanism between electrochemical energy storage and water electrolysis hydrogen production, hydrogen storage and gas station hydrogen supply, and hydrogen storage and fuel cell hydrogen use, to support the operation of a multi-generation integrated energy system. The platform can effectively plan, schedule and control the system operation in real time on multiple time scales such as seconds, minutes and days, and proposes a multi-objective optimization operation strategy for the system. This will significantly improve the efficiency, robustness and economy of the multi-generation integrated energy system. In summary, the present invention can effectively solve the problems of poor system stability, insufficient safety, low energy efficiency and weak economic benefits faced in the process of large-scale new energy production and comprehensive utilization, and realize the efficient utilization of waste heat and waste hydrogen. Specific embodiment nine:

[0089] The difference between the ninth embodiment of the present invention and the eighth embodiment is that:

[0090] The present invention provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement a method for coordinated management of electric, thermal and hydrogen multi-energy flows for a new energy system in cold regions.

[0091] The method comprises the following steps:

[0092] Step 1: Collect data and integrate historical data of photovoltaic power generation;

[0093] Step 2: Input the integrated data into the data processing center, and use historical and real-time data to analyze the performance and stability of photovoltaic power generation, so as to obtain the temperature and light environment influencing factors related to various energy sources;

[0094] Step 3: Conduct a multi-energy flow assessment to evaluate the availability of photovoltaic power generation energy and predict future energy use;

[0095] Step 4: Forecast future energy demand based on historical data and energy deduction models;

[0096] Step 5: Set the priority of each energy source and the operation of each component in the system according to energy demand;

[0097] Step 6: Develop and execute a dispatch plan based on energy demand forecasts and priorities;

[0098] Step 7: Adjust and optimize the scheduling plan in real time to cope with the actual operation of the electric thermal hydrogen multi-energy flow system. Specific embodiment ten:

[0100] The difference between the tenth embodiment of the present invention and the ninth embodiment is that:

[0101] The present invention provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, a method for coordinated management of electric, thermal and hydrogen multi-energy flows for a new energy system in cold regions is implemented.

[0102] The method comprises the following steps:

[0103] Step 1: Collect data and integrate historical data of photovoltaic power generation;

[0104] Step 2: Input the integrated data into the data processing center, and use historical and real-time data to analyze the performance and stability of photovoltaic power generation, so as to obtain the temperature and light environment influencing factors related to various energy sources;

[0105] Step 3: Conduct a multi-energy flow assessment to evaluate the availability of photovoltaic power generation energy and predict future energy use;

[0106] Step 4: Forecast future energy demand based on historical data and energy deduction models;

[0107] Step 5: Set the priority of each energy source and the operation of each component in the system according to energy demand;

[0108] Step 6: Develop and execute a dispatch plan based on energy demand forecasts and priorities;

[0109] Step 7: Adjust and optimize the scheduling plan in real time to cope with the actual operation of the electric thermal hydrogen multi-energy flow system. Specific embodiment eleven:

[0111] The difference between the eleventh embodiment of the present invention and the tenth embodiment is that:

[0112] The purpose of the present invention is to provide a strategy for the coordinated management of electric thermal hydrogen multi-energy flows for cold-region new energy systems. The cold-region new energy system includes photovoltaic, energy storage power stations and hydrogen storage devices (such as electrolyzers and fuel cells). By coupling various energy sources such as electricity, heat and hydrogen, the coupling law of electric thermal hydrogen multi-energy flows in the process of conversion, transportation and storage is clarified, and the cascade utilization of energy of different grades is realized, giving full play to the coordinated optimization and multi-energy complementary advantages between multi-energy flows. And in-depth discussion of the multi-energy flow matching mechanism in the integrated process of electrochemical energy storage and water electrolysis hydrogen production, hydrogen storage and hydrogen supply at hydrogen refueling stations, and hydrogen storage and fuel cell hydrogen use. Establish an online energy management platform for the operation of a multi-generation integrated energy system, which can be planned, dispatched and controlled in real time for multiple time scales such as seconds, minutes and days. This will help upgrade the energy industry structure, improve energy production and utilization methods, and promote the absorption of renewable energy, thereby solving the problems mentioned in the background technology.

[0113] To achieve the above object, the present invention adopts the following technical solutions:

[0114] An electric, thermal and hydrogen multi-energy flow collaborative management system for a new energy system in cold regions, comprising:

[0115] System thermodynamic process and energy flow analysis models for:

[0116] Clarify the coupling rules between the conversion, transportation and storage of the electric and thermal hydrogen multi-energy flows within the system, and then explore the multi-energy flow matching mechanism of the integrated production, storage and use process such as electrochemical energy storage and hydrogen production by water electrolysis, hydrogen storage and hydrogen supply to hydrogen refueling stations, and hydrogen storage and hydrogen use for fuel cells;

[0117] Operational constraint models for multi-energy flow conversion, transportation and storage for:

[0118] Clarify the relationships and connections between the various components in the system, and constrain the behavior of each component in the process of multi-energy flow conversion, transportation and storage, so as to better utilize the waste heat and waste hydrogen;

[0119] Intraday energy management and dispatch model for:

[0120] Based on the objective function and constraint condition modules of each energy source’s intraday scheduling, historical data is collected to calculate the energy scheduling of each energy source in different time periods; and based on the objective function and constraint conditions of intraday scheduling, future energy demand is predicted based on the calculation results, so as to determine the optimal operation strategy of each energy source at the current moment.

[0121] Further, the thermodynamic process and energy flow analysis module of the system, when sunlight shines on the photovoltaic system, it starts to generate electricity. When the photovoltaic power generation energy is normal, it is first supplied to the electrolyzer, where the electricity decomposes water into hydrogen and supplies it to the fuel cell. The fuel cell directly uses hydrogen to generate electricity, which can improve the efficiency of energy use. This part of the electricity is first supplied to the cold-region plant, and the remaining electricity is stored in the energy storage power station for subsequent use. In the case of insufficient photovoltaic power generation, the system will call the power of the hydrogen storage device and the power generated by the fuel cell to ensure that the power demand of the plant is met. When the overall use demand of hydrogen in the plant is met first, the remaining hydrogen will be stored in the hydrogen tank and used to supply hydrogen filling stations and hydrogen fuel cell heavy trucks. Fuel cells generate a lot of waste heat. When winter comes, this part of the heat will meet the heating needs of the cold-region plant, and the heat will be stored in the heat storage tank. This part of the heat will be used for the heat of the electrolyzer startup. When the heat supply is not enough to meet the heating needs, the heat in the heat storage device will be called first to ensure continuous heating.

[0122] The operation constraint module of multi-energy flow conversion, transportation and storage includes the constraint condition module for the hydrogen production link of water electrolysis, the hydrogen conversion to thermal power link of hydrogen fuel cell, and photovoltaic power generation equipment, so as to clarify the photovoltaic power generation hydrogen production and hydrogen conversion to thermal power link;

[0123] The operation constraint module of multi-energy flow conversion, transportation and storage includes power storage equipment constraint module, heat storage equipment constraint module, waste heat heating module and hydrogen storage equipment constraint module to clarify the operation constraint conditions of multi-energy flow storage;

[0124] The daily energy management and scheduling module includes the objective function and constraint condition modules for daily electricity, hydrogen and thermal energy scheduling, and performs comprehensive scheduling of daily electricity, hydrogen and thermal energy;

[0125] Furthermore, the intraday energy management and scheduling module includes a data processing center, which integrates the collected historical data, evaluates the operating status of the multi-energy flow system, and matches the corresponding control strategy based on the operating status of the multi-energy flow system;

[0126] The intraday energy management and scheduling module includes a component for predicting future energy to determine the optimal operation strategy of the multi-energy flow system in the current time period, and performs energy management and scheduling according to the optimal operation strategy;

[0127] The intraday energy management and scheduling module also includes a real-time detection and optimization module, which performs real-time detection and continuously optimizes and adjusts the multi-energy flow management strategy based on historical data, energy demand speculation and multi-energy flow operation status; Specific embodiment twelve:

[0129] The difference between the twelfth embodiment of the present invention and the eleventh embodiment is that:

[0130] like Figure 1As shown, the present invention proposes an electric-thermal-hydrogen multi-energy flow collaborative management system for cold-region new energy systems, which includes the electric-thermal-hydrogen multi-energy complementary power generation system. According to the multi-energy complementary power generation system, an operation constraint module for multi-energy flow conversion, transportation and storage is established. The multi-objective optimization strategy of the present invention will focus on the following aspects: Photovoltaic power generation in cold regions is greatly affected by the season. Therefore, when the light is good and the sunshine time is long (such as summer in the four seasons and daytime every day), photovoltaic power stations are used first to supply electricity to the electrolyzer, and the energy storage power station is charged during the period of low power consumption. When the light is insufficient (such as winter in the four seasons and night every day), the hydrogen storage system will be called first. This is also because the photovoltaic power generation of this project is an independent system, and it is necessary to use fuel cells to generate electricity as much as possible to meet the power demand of the plant. In terms of heating, the heat generated by fuel cells will be used first to meet the heating needs of the plant, and thermal energy storage will be used only when the waste heat cannot meet the demand. In the process of hydrogen production, the waste heat of fuel cells will be used for winter heating of the plant, and the produced hydrogen will be used for fuel cell power generation first. Excess hydrogen will be stored in hydrogen storage tanks for future hydrogen refueling needs and for fuel cell heavy trucks. The complementary power generation system will continuously collect and prepare the following data during use: historical weather data (temperature, humidity, sunshine hours, etc.); historical energy demand data (electricity, heat, hydrogen, etc.); seasonal changes (such as different seasons); daily different time node data (light conditions in different time periods) to better predict energy demand.

[0131] A multi-energy flow collaborative management strategy for electric, thermal and hydrogen for a new energy system in cold regions, characterized by comprising: a system thermodynamic process and energy flow analysis module for:

[0132] Clarify the coupling rules between the conversion, transportation and storage of the electric and thermal hydrogen multi-energy flows within the system, and then explore the multi-energy flow matching mechanism of the integrated production, storage and use process such as electrochemical energy storage and hydrogen production by water electrolysis, hydrogen storage and hydrogen supply to hydrogen refueling stations, and hydrogen storage and hydrogen use for fuel cells;

[0133] Operational constraints module for multi-energy flow conversion, transportation and storage, used for:

[0134] Clarify the relationships and connections between the various components in the system, and constrain the behavior of each component in the process of multi-energy flow conversion, transportation and storage, so as to better utilize the waste heat and waste hydrogen;

[0135] Intraday energy management and scheduling module for:

[0136] Based on the objective function and constraint condition modules of each energy source’s intraday scheduling, historical data is collected to calculate the energy scheduling of each energy source in different time periods; and based on the objective function and constraint conditions of intraday scheduling, future energy demand is predicted based on the calculation results, so as to determine the optimal operation strategy of each energy source at the current moment.

[0137] All photovoltaic power generation is used to provide energy for electrolytic hydrogen production. This integrated demonstration project is a photovoltaic + energy storage + hydrogen production project, in which photovoltaic operation is off-grid;

[0138] The system thermodynamic process and energy flow analysis module is composed of a hydrogen fuel cell, a heat storage device, an electricity storage device, a hydrogen storage device, a PEM electrolyzer and an alkaline electrolyzer⑥, which form an electric-thermal-hydrogen multi-energy complementary heating system through system thermodynamic process and energy flow analysis, and efficiently utilize the waste heat and waste hydrogen of the fuel cell to form energy utilization forms such as hydrogen-heat cogeneration and heat-power cogeneration, so as to realize flexible and low-carbon operation of the site;

[0139] Operation constraint modules for multi-energy flow conversion, transportation and storage: hydrogen-to-thermal power link constraint module for hydrogen fuel cells; photovoltaic power generation equipment constraint module; power storage equipment constraint module; heat storage equipment constraint module, waste heat heating module; hydrogen storage equipment constraint module;

[0140] The operation constraint module of the multi-energy flow conversion, transportation and storage is operated based on the following strategies:

[0141] Electric energy flow: Photovoltaic power generation gives priority to the electrolyzer: Under normal conditions of photovoltaic energy, electricity will first be used in the electrolyzer, which decomposes water into hydrogen and stores it; Fuel cells give priority to the plant: Fuel cells serve as another power source and give priority to meeting the power needs of the plant; Excess power storage: When the power generated by photovoltaic power generation and the power supply of fuel cells meet all needs, the remaining power is stored in the hydrogen storage system for later use; Response to insufficient photovoltaic power: In the case of insufficient photovoltaic power generation, the system will call on the power of the hydrogen storage device and the power generated by the fuel cell to ensure that the power demand of the plant is met. Thermal energy flow: Prioritize the use of heat generated by fuel cells: When the heating demand of the plant is raised, try to give priority to the use of heat generated by fuel cells; Excess heat storage: After meeting the heating demand, the remaining heat is stored in the heat storage device for future needs; Solution strategy for insufficient supply: When the heat supply is insufficient to meet the demand, the heat in the heat storage device will be called on first to ensure continuous heating.

[0142] Hydrogen energy flow: The produced hydrogen will be used for power generation first: The system will use the hydrogen produced by the electrolyzer for fuel cell power generation, which can improve the efficiency of energy use; Remaining hydrogen storage: When the priority demand for hydrogen use is met, the remaining hydrogen oil will be stored in the hydrogen storage device for supplying hydrogen refueling stations and heavy trucks.

[0143] The intraday energy management and scheduling module includes: an objective function and constraint condition module for intraday electric energy scheduling; an objective function and constraint condition module for intraday hydrogen energy scheduling; an objective function and constraint condition module for intraday thermal energy scheduling;

[0144] The intraday energy management and scheduling module includes: Capacity evaluation module: It is necessary to input the historical data of integrated photovoltaic power generation, and use historical and real-time data to analyze the performance and stability of photovoltaic power generation, so as to obtain environmental influencing factors such as temperature and light related to various types of energy, so as to evaluate the availability of energy and generate a comprehensive evaluation report based on the quality evaluation results.

[0145] Cascade scheduling module: Based on historical data and energy deduction modules, it predicts future energy demand and sets the priority of each energy source and the operation of each component in the system according to energy demand. It formulates a cascade scheduling plan based on energy demand forecasts and priorities, and adjusts the scheduling plan in real time to respond to real-time renewable energy data and the actual operation of energy stations.

[0146] like Figure 2 As shown, the present invention proposes an electric-thermal-hydrogen multi-energy flow collaborative management strategy for a cold-region new energy system, which includes a multi-energy flow collaborative operation scheduling method flow chart, which includes the following steps:

[0147] Step 1: Collect data and integrate historical data of photovoltaic power generation;

[0148] Step 2: Input the integrated data into the data processing center, and use historical and real-time data to analyze the performance and stability of photovoltaic power generation, so as to obtain environmental factors such as temperature and light related to various energy sources;

[0149] Step 3: Then, a multi-energy flow assessment is conducted to evaluate the availability of photovoltaic power generation energy and predict future energy use;

[0150] Step 4: Forecast future energy demand based on historical data and energy deduction module;

[0151] Step 5: Set the priority of each energy source and the operation of each component in the system according to energy demand;

[0152] Step 6: Develop and execute a dispatch plan based on energy demand forecasts and priorities;

[0153] Step 7: Adjust and optimize the scheduling plan in real time to cope with the actual operation of the electric thermal hydrogen multi-energy flow system.

[0154] The above is only a preferred implementation of an electric-thermal-hydrogen multi-energy flow collaborative management system and method for a cold-region new energy system. The protection scope of an electric-thermal-hydrogen multi-energy flow collaborative management system and method for a cold-region new energy system is not limited to the above embodiments. All technical solutions under this idea belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, several improvements and changes without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An electric, thermal and hydrogen multi-energy flow collaborative management system for a cold-region new energy system, characterized by: The system comprises: System thermodynamic process and energy flow analysis module: determine the coupling rules between the conversion, transportation and storage of the electric and thermal hydrogen multi-energy flows within the system, and determine the multi-energy flow matching mechanism of the integrated production, storage and use process such as electrochemical energy storage and water electrolysis hydrogen production, hydrogen storage and hydrogen supply to hydrogen refueling stations, and hydrogen storage and fuel cell hydrogen use; Operation constraint module for multi-energy flow conversion, transportation and storage: Determine the relationship and connection between various components in the system, constrain the behavior of each component in the process of multi-energy flow conversion, transportation and storage, and utilize waste heat and waste hydrogen; Intraday energy management and scheduling module: collect historical data to calculate the energy scheduling of each energy source in different time periods; and predict future energy demand based on the calculation results according to the objective function and constraints of intraday scheduling, and determine the optimal operation strategy for each energy source at the current moment.

2. The system according to claim 1, characterized in that: The system thermodynamic process and energy flow analysis module includes hydrogen fuel cells, heat storage equipment, electricity storage equipment, hydrogen storage equipment, PEM electrolyzer and alkaline electrolyzer. Through the system thermodynamic process and energy flow analysis, an electric-thermal-hydrogen multi-energy complementary heating system is formed to efficiently utilize the waste heat and waste hydrogen of the fuel cell to form energy utilization forms such as hydrogen-heat cogeneration and cogeneration, thereby realizing flexible and low-carbon operation of the site.

3. The system according to claim 2, characterized in that: The operation constraint modules for multi-energy flow conversion, transportation and storage include the hydrogen-to-thermal power link constraint module of the hydrogen fuel cell, the photovoltaic power generation equipment constraint module, the power storage equipment constraint module, the heat storage equipment constraint module, the waste heat heating module and the hydrogen storage equipment constraint module.

4. The system according to claim 3, characterized in that: Power flow: Photovoltaic power generation gives priority to the electrolyzer. Under normal conditions of photovoltaic energy, electricity is first used in the electrolyzer, which decomposes water into hydrogen and stores it. Fuel cells give priority to the plant: Fuel cells serve as another power source and give priority to meeting the power needs of the plant. Excess power storage: When the power generated by photovoltaic power generation and the power supply of fuel cells meet all needs, the remaining power is stored in the hydrogen storage system for later use; Response when photovoltaic power is insufficient: When photovoltaic power generation is insufficient, the system will call on the power generated by the hydrogen storage device and the fuel cell to ensure that the factory's electricity needs are met.

5. The system according to claim 4, characterized in that: Heat flow: Prioritize the use of heat generated by fuel cells: When the heating demand for the plant area is raised, try to give priority to the use of heat generated by fuel cells; Excess heat storage: After meeting heating demand, the remaining heat is stored in a heat storage device for future use; Strategy for solving insufficient supply: When the thermal energy supply is insufficient to meet demand, the heat in the thermal storage device will be used first to ensure continuous heating.

6. The system according to claim 5, characterized in that: Hydrogen energy flow: Prioritize the use of produced hydrogen for power generation: The system will use the hydrogen produced by the electrolyzer for fuel cell power generation to improve energy efficiency; Residual hydrogen storage: When the priority demand for hydrogen use is met, the remaining hydrogen oil will be stored in the hydrogen storage device for supplying hydrogen refueling stations and heavy trucks.

7. The system according to claim 6, characterized in that: The intraday energy management and scheduling module includes: capacity assessment module and cascade scheduling module; The capacity assessment module needs to input the historical data of integrated photovoltaic power generation, and use the historical and real-time data to analyze the performance and stability of photovoltaic power generation, so as to obtain the environmental influencing factors such as temperature and light related to various energy sources, so as to evaluate the availability of energy and generate a comprehensive assessment report based on the quality assessment results; Cascade scheduling module: Based on historical data and energy deduction models, it predicts future energy demand and sets the priority of each energy source and the operation of each component in the system according to energy demand; formulates a cascade scheduling plan based on energy demand forecasts and priorities, and adjusts the scheduling plan in real time to respond to real-time renewable energy data and the actual operation of energy stations.

8. A method for coordinated management of electric, thermal and hydrogen multi-energy flows for a new energy system in cold regions, characterized by: The method comprises the following steps: Step 1: Collect data and integrate historical data of photovoltaic power generation; Step 2: Input the integrated data into the data processing center, and use historical and real-time data to analyze the performance and stability of photovoltaic power generation, so as to obtain the temperature and light environment influencing factors related to various energy sources; Step 3: Conduct a multi-energy flow assessment to evaluate the availability of photovoltaic power generation energy and predict future energy use; Step 4: Forecast future energy demand based on historical data and energy deduction models; Step 5: Set the priority of each energy source and the operation of each component in the system according to energy demand; Step 6: Develop and execute a dispatch plan based on energy demand forecasts and priorities; Step 7: Adjust and optimize the scheduling plan in real time to cope with the actual operation of the electric thermal hydrogen multi-energy flow system.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the method according to claim 8.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: The method of claim 8 is implemented when the processor executes the computer program.

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