Joint modeling method of salt cavern comprehensive energy system

Abstract

The invention relates to the technical field of new energy, in particular to a combined modeling method for a salt-cavern integrated energy system, and the method comprises the steps: obtaining a physical structure of the salt-cavern integrated energy system; identifying a wind power generation system, a photovoltaic power generation system, a salt-cavern compressed air energy storage system and a transmission route in the physical structure, and establishing a model of the salt-cavern comprehensive energy system based on the wind power generation system, the photovoltaic power generation system, the salt-cavern compressed air energy storage system and the transmission route; and controlling the salt cavern compressed air energy storage system to store energy and generate power by using the model of the salt cavern comprehensive energy system according to the generating capacity of the wind power generation system, the generating capacity of the photovoltaic power generation system and the required electric quantity. Therefore, the problem that the power generation efficiency and the operation stability of the power grid are affected due to the fact that the energy source of the new energy system has intermittency and volatility in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to a joint modeling method for a salt cavern integrated energy system. Background Art

[0002] Traditional fossil energy is no longer able to meet the current requirements for clean and sustainable energy development due to its non-renewable nature and the many problems it causes, such as environmental pollution and greenhouse gas emissions, caused by its combustion. Therefore, people are actively exploring new energy solutions.

[0003] Among related technologies, photovoltaic and wind power, as renewable energy sources, have seen large-scale adoption in recent years. Photovoltaic power converts solar energy into electricity, while wind power utilizes wind resources to generate electricity. Both offer significant advantages in being clean and pollution-free. However, the intermittent and volatile nature of their energy sources cannot be ignored. For example, wind power output fluctuates significantly with wind speed, while photovoltaic power generation is unstable due to weather conditions and the alternation of day and night. This often leads to operational issues such as frequency fluctuations and voltage instability when these power sources are connected to the grid individually, posing significant challenges to the safe and stable operation of the grid. Summary of the Invention

[0004] The present application provides a joint modeling method, apparatus, equipment, storage medium, and program for a salt cavern integrated energy system to address the problems in related technologies such as the intermittent and fluctuating energy sources of new energy systems, which affect the power generation efficiency and operational stability of the power grid.

[0005] A first aspect of the present application provides a joint modeling method for a salt cavern integrated energy system, comprising the following steps: obtaining the physical structure of the salt cavern integrated energy system; identifying a wind power generation system, a photovoltaic power generation system, a salt cavern compressed air energy storage system, and a transmission route in the physical structure, and establishing a model of the salt cavern integrated energy system based on the wind power generation system, the photovoltaic power generation system, the salt cavern compressed air energy storage system, and the transmission route; and controlling the energy storage and power generation of the salt cavern compressed air energy storage system using the model of the salt cavern integrated energy system according to the power generation of the wind power generation system, the power generation of the photovoltaic power generation system, and the power demand.

[0006] Optionally, the model of the salt cavern integrated energy system includes a first constraint and a second constraint, wherein the first constraint is that the total power generation of the wind power generation system and the photovoltaic power generation system is greater than or equal to the required power; the second constraint is that the power generated by the surplus power is within the power range of normal operation of the compression side compressor of the salt cavern compressed air energy storage system, wherein the surplus power is calculated based on the total power generation of the wind power generation system and the photovoltaic power generation system and the required power.

[0007] Optionally, before using the model of the salt cavern integrated energy system to control the energy storage and power generation of the salt cavern compressed air energy storage system, it includes: identifying whether the power generation of the wind power generation system, the power generation of the photovoltaic power generation system and the required power satisfy a first constraint and a second constraint; if the power generation of the wind power generation system, the power generation of the photovoltaic power generation system and the required power satisfy the first constraint and the second constraint, then controlling the salt cavern compressed air energy storage system to store energy; if the power generation of the wind power generation system, the power generation of the photovoltaic power generation system and the required power do not satisfy at least one of the first constraint and the second constraint, then controlling the salt cavern compressed air energy storage system to generate power.

[0008] Optionally, using the model of the salt cavern integrated energy system to control the power generation of the salt cavern compressed air energy storage system includes: obtaining the power generation efficiency of the salt cavern integrated energy system; adjusting the power generation weights of the wind power generation system, the photovoltaic power generation system, and the salt cavern compressed air energy storage system according to the power generation efficiency of the salt cavern integrated energy system; and controlling the power generation of the salt cavern compressed air energy storage system according to the power generation ratio.

[0009] Optionally, obtaining the power generation efficiency of the turbine on the turbine side of the salt cavern integrated energy system includes: obtaining the comprehensive conversion efficiency of the turbine and the thermoelectric conversion efficiency of the heat exchanger; and determining the power generation efficiency of the salt cavern integrated energy system based on the comprehensive conversion efficiency and the thermoelectric conversion efficiency.

[0010] Optionally, adjusting the power generation weights of the wind power generation system, the photovoltaic power generation system, and the salt cavern compressed air energy storage system according to the power generation efficiency of the salt cavern integrated energy system includes: if the power generation efficiency of the salt cavern compressed air energy storage system is greater than or equal to a target efficiency threshold, adjusting the power generation weights of the wind power generation system, the photovoltaic power generation system, and the salt cavern compressed air energy storage system according to a first preset ratio; if the power generation efficiency of the salt cavern compressed air energy storage system is less than the target efficiency threshold, adjusting the power generation weights of the wind power generation system, the photovoltaic power generation system, and the salt cavern compressed air energy storage system according to a second preset ratio.

[0011] In a second aspect, an embodiment of the present application provides a joint modeling device for a salt cavern integrated energy system, including: an acquisition module for acquiring the physical structure of the salt cavern integrated energy system; an identification module for identifying a wind power generation system, a photovoltaic power generation system, a salt cavern compressed air energy storage system, and a transmission route in the physical structure, and establishing a model of the salt cavern integrated energy system based on the wind power generation system, the photovoltaic power generation system, the salt cavern compressed air energy storage system, and the transmission route; and a control module for controlling the energy storage and power generation of the salt cavern compressed air energy storage system using the model of the salt cavern integrated energy system according to the power generation of the wind power generation system, the power generation of the photovoltaic power generation system, and the power demand.

[0012] An embodiment of the third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to perform the joint modeling method of the salt cavern integrated energy system as described in the above embodiment.

[0013] The fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to perform the joint modeling method of the salt cavern integrated energy system as described in the above embodiment.

[0014] The fifth embodiment of the present application provides a computer program product, including a computer program or instructions, which, when executed, implements the joint modeling method of the salt cavern integrated energy system as described in the above embodiment.

[0015] Therefore, this application has at least the following beneficial effects:

[0016] The embodiment of the present application establishes a model of a salt cavern integrated energy system through wind power generation, photovoltaic power generation, a salt cavern compressed air energy storage system, and a transmission route. Based on the power generation of the wind power generation system, the power generation of the photovoltaic power generation system, and the power demand, the salt cavern integrated energy system model is used to control the energy storage and power generation of the salt cavern compressed air energy storage system. When the salt cavern integrated energy system has sufficient power, the generated electricity is transmitted as a power source to the compressor end of the compressed air energy storage, driving the compressor to compress the air and store it in the salt cavern, thereby realizing the conversion of electrical energy into compressed air potential energy. When the output of photovoltaic and wind power is insufficient or the power demand is peak, the high-pressure air stored in the salt cavern releases energy through the turbine expander to generate electricity, and the compressed air potential energy is converted back into electrical energy, which is reversely supplemented to the entire energy supply system, completing the cyclic conversion process of electrical energy among the three, and improving the overall power generation efficiency and operational stability of the system.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 This is a flow chart of a joint modeling method for a salt cave integrated energy system provided according to an embodiment of the present application;

[0020] Figure 2 A schematic diagram of a model for establishing a wind power, photovoltaic, and salt cavern compressed air energy storage system according to an embodiment of the present application;

[0021] Figure 3 This is an example diagram of a joint modeling device for a salt cavern integrated energy system provided according to an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the structure of an electronic device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0024] The following describes the joint modeling method, device, electronic device, storage medium and program of the salt cavern integrated energy system in the embodiments of the present application with reference to the accompanying drawings.

[0025] Specifically, Figure 1 A flow chart of a joint modeling method for a salt cavern integrated energy system provided in an embodiment of the present application.

[0026] like Figure 1 As shown in FIG, the joint modeling method of the salt cavern integrated energy system includes the following steps:

[0027] In step S101, the physical structure of the salt cavern integrated energy system is obtained.

[0028] It is understandable that the embodiments of the present application can obtain the physical structure of the salt cavern integrated energy system to facilitate the subsequent establishment of a model of the salt cavern integrated energy system.

[0029] It should be noted that the physical structure of the salt cavern integrated energy system includes but is not limited to a wind power generation system, a photovoltaic power generation system, a salt cavern compressed air energy storage system and a transmission route.

[0030] In step S102, the wind power generation system, photovoltaic power generation system, salt cavern compressed air energy storage system and transmission route in the physical structure are identified, and a model of the salt cavern integrated energy system is established based on the wind power generation system, photovoltaic power generation system, salt cavern compressed air energy storage system and transmission route.

[0031] It can be understood that the embodiments of the present application can establish a model of the salt cavern integrated energy system based on the wind power generation system, photovoltaic power generation system, salt cavern compressed air energy storage system and transmission route, so as to facilitate the subsequent optimization of energy distribution according to the model of the salt cavern integrated energy system, ensure the stable operation of the power grid, store excess energy when electricity is sufficient, release stored energy when electricity is insufficient, and improve energy utilization efficiency; by dynamically coordinating the operation of wind and solar power generation and energy storage systems, the overall reliability and economy of the system can be improved.

[0032] It should be noted that this application integrates wind power generation, photovoltaic power generation and salt cavern compressed air energy storage system into a unified energy system model to solve the intermittent and fluctuating problems of wind and solar power generation; Figure 2 As shown in the figure, a model is built based on the system's physical structure, including wind power generation, photovoltaic power generation, salt cavern compressed air energy storage systems, and transmission lines. This joint modeling achieves the following goals: optimizing energy distribution to ensure stable grid operation; storing excess energy when power is abundant and releasing stored energy when power is insufficient, improving energy utilization efficiency; and dynamically coordinating the operation of wind and solar power generation and energy storage systems to improve the overall reliability and cost-effectiveness of the system.

[0033] In step S103 , based on the power generation of the wind power generation system, the power generation of the photovoltaic power generation system, and the power demand, the model of the salt cavern integrated energy system is used to control the energy storage and power generation of the salt cavern compressed air energy storage system.

[0034] It can be understood that the embodiment of the present application can use the model of the salt cavern integrated energy system to control the energy storage and power generation of the salt cavern compressed air energy storage system based on the power generation of the wind power generation system, the power generation of the photovoltaic power generation system and the required power, so as to improve the overall power generation efficiency and operational stability of the system.

[0035] Specifically, the established model can control the operation of the compressed air energy storage system based on the real-time power generation of photovoltaic and wind power. On the compression side, the air compression volume is adjusted to match the compression side's operating range based on the photovoltaic and wind power generation and the regional surplus electricity, ensuring the appropriate power on the compression side. On the turbine side, power generation is prioritized, with photovoltaic and wind power being used first, followed by compressed air energy storage. Power generation is coordinated through a proportional allocation method, thus enabling analysis and control of the salt cavern compressed air energy storage system's operation and ensuring the stable operation of the entire system.

[0036] In the salt cavern integrated energy system, when there is sufficient electricity, the electricity generated by photovoltaic and wind power is used as a power source to drive the compressor, compressing the air and storing it in the salt cavern, realizing the conversion of electricity into compressed air potential energy; when the output of photovoltaic and wind power is insufficient or the electricity demand is peak, the high-pressure air in the salt cavern releases energy through the turbine expander to generate electricity, converting the compressed air potential energy back into electricity, and reversely replenishing it to the energy supply system, completing the cycle conversion of electricity among the three.

[0037] In an embodiment of the present application, the model of the salt cavern integrated energy system includes a first constraint and a second constraint, wherein the first constraint is that the total power generation of the wind power generation system and the photovoltaic power generation system is greater than or equal to the required power; the second constraint is that the power generated by the surplus power is within the power range of normal operation of the compression side compressor of the salt cavern compressed air energy storage system, wherein the surplus power is calculated based on the total power generation of the wind power generation system and the photovoltaic power generation system and the required power.

[0038] It can be understood that the model of the salt cavern integrated energy system in the embodiment of the present application includes a first constraint and a second constraint. The constraints can accurately control the operating state of the compression side to maintain its power within a reasonable range. In addition to meeting the basic electricity demand in the current area of ​​the salt cavern integrated energy system, it is also necessary to understand the remaining electric energy available for allocation to the compression side, so as to reasonably limit the electric energy input from wind power and photovoltaic power generation to the compression side for air compression, so as to avoid the compression side power exceeding the reasonable range due to excessive or insufficient electric energy, thereby affecting the stable and efficient operation of the entire salt cavern integrated energy system.

[0039] Specifically, the constraints:

[0040] P 光 +P 风 ≥P 网

[0041] P 余 =P 网 -P 光 -P 风

[0042] P min ≤P 余 ≤P max

[0043] Among them, P 光 is the photovoltaic power generation power, P 风 is the wind power generation power, P 网 is the power required by the grid, P 余 is the surplus electricity in the region, P min The minimum power required for the normal operation of the compression side compressor, P maxThis is the maximum power required for normal operation of the compression side compressor.

[0044] A key constraint condition is added to the compression side of the compressed air energy storage. This constraint condition aims to accurately control the operating state of the compression side and keep its power within a reasonable range. This constraint condition requires that the amount of wind power and photovoltaic power generation must be compatible with the operating range of the compression side and the abundant power situation in the area. In other words, based on parameters such as the upper and lower limits of the power that the compression side equipment can withstand, the optimal power range for stable operation, and the remaining power that can be allocated to the compression side after meeting basic electricity needs in the current area, reasonable restrictions should be placed on the power input from wind power and photovoltaic power generation to the compression side for air compression, so as to avoid the power on the compression side exceeding the reasonable range due to too much or too little electricity, thereby affecting the stable and efficient operation of the entire salt cavern integrated energy system.

[0045] In an embodiment of the present application, before using the model of the salt cavern integrated energy system to control the energy storage and power generation of the salt cavern compressed air energy storage system, it includes: identifying whether the power generation of the wind power generation system, the power generation of the photovoltaic power generation system and the required power meet the first constraint and the second constraint; if the power generation of the wind power generation system, the power generation of the photovoltaic power generation system and the required power meet the first constraint and the second constraint, then controlling the salt cavern compressed air energy storage system to store energy; if the power generation of the wind power generation system, the power generation of the photovoltaic power generation system and the required power do not meet at least one of the first constraint and the second constraint, then controlling the salt cavern compressed air energy storage system to generate power.

[0046] It can be understood that in the embodiment of the present application, when wind and solar power generation is sufficient and meets the constraints, the energy storage system can absorb excess electricity to avoid grid overload; when wind and solar power generation is insufficient or the power exceeds the limit, the energy storage system can replenish electricity in time to maintain the stability of grid frequency and voltage, avoid wind and solar power curtailment, improve the utilization rate of renewable energy, and achieve a balance between efficient energy utilization and stable grid operation.

[0047] Specifically, when the lighting conditions are good and the wind conditions are ideal, resulting in abundant electricity, this electricity will be used as the power source to drive the compressor and will be accurately transmitted to the compressor end of the compressed air energy storage system, prompting the compressor to operate efficiently, compressing the air, and storing the compressed air in the salt cavern, thus achieving the key link of converting electrical energy into compressed air potential energy; when facing poor photovoltaic and wind power output, which cannot meet the system's electricity demand, or when the electricity supply is tight during peak hours, the high-pressure air stored in the salt cavern will release energy through the turbine expander according to the established energy conversion mechanism, and convert the compressed air potential energy it contains back into electrical energy, and then reversely replenish this part of the electrical energy to the entire energy supply system, thereby completely realizing the cyclical conversion process of electrical energy between photovoltaic, wind power and compressed air energy storage, laying a solid foundation for the continuous and stable power supply of the energy system.

[0048] In an embodiment of the present application, a model of a salt cavern integrated energy system is used to control the power generation of a salt cavern compressed air energy storage system, including: obtaining the power generation efficiency of the salt cavern integrated energy system; adjusting the power generation weights of a wind power generation system, a photovoltaic power generation system, and a salt cavern compressed air energy storage system according to the power generation efficiency of the salt cavern integrated energy system; and controlling the power generation of the salt cavern compressed air energy storage system according to the power generation ratio.

[0049] It can be understood that the embodiment of the present application can start the energy stored in the compressed air energy storage to generate electricity when the wind power and photovoltaic output are unstable and the generated electricity cannot meet the minimum power demand for the normal operation of the system, based on the consideration of ensuring continuous power supply to the system, to ensure that the entire energy supply link will not be interrupted, maintain stable operation of the system, and dynamically distribute the power generation power signal according to the proportional distribution method, so as to achieve efficient and reasonable operation of the power generation link of the entire system.

[0050] It's important to note that within the salt cavern integrated energy system, the turbine side of the compressed air energy storage system plays a crucial role in generating electricity. A logical and orderly prioritization has been devised for its specific power generation arrangements. Because wind and photovoltaic power are green and renewable, they align with the current trend toward cleaner energy utilization, and therefore prioritize their use for power generation. As long as the amount of electricity generated by wind and photovoltaic power can meet the system's power requirements, they remain the primary choice. However, due to the limitations of wind and photovoltaic power generation, including natural factors, power shortages are inevitable. When wind and photovoltaic power generation fluctuates and the generated electricity falls short of the minimum power requirement for normal system operation, the compressed air energy storage system is activated to generate electricity to ensure continuous power supply, ensuring uninterrupted energy supply and maintaining stable system operation.

[0051] On the turbine side of the salt cavern integrated energy system, a proportional allocation method is used to dynamically distribute the power signal, thereby achieving efficient and rational operation of the entire system's power generation chain. A key factor in power generation decisions is the power generation efficiency of the compressed air energy storage. Power generation efficiency is determined by the product of two key efficiencies within the power generation system, under the condition that compression conditions remain stable. Specifically, it is the product of the turbine's electricity-heat-gas conversion efficiency and the heat exchanger's thermoelectric conversion efficiency. As a core component, the turbine converts thermal energy, kinetic energy, and potential energy into electricity. However, there are certain efficiency differences in this conversion process, and this efficiency reflects its actual ability to convert various types of energy into electricity. The heat exchanger, equally critical, is responsible for converting thermal energy into electricity. Its thermoelectric conversion efficiency also varies depending on factors such as equipment performance and operating environment. The resulting power generation efficiency, derived by multiplying the two, becomes a key indicator for determining the power generation method.

[0052] In an embodiment of the present application, obtaining the power generation efficiency of the turbine on the turbine side of the salt cavern integrated energy system includes: obtaining the comprehensive conversion efficiency of the turbine and the thermoelectric conversion efficiency of the heat exchanger; and determining the power generation efficiency of the salt cavern integrated energy system based on the comprehensive conversion efficiency and the thermoelectric conversion efficiency.

[0053] It is understandable that the embodiments of the present application can obtain the comprehensive conversion efficiency of the turbine and the thermoelectric conversion efficiency of the heat exchanger; determine the power generation efficiency of the salt cavern integrated energy system based on the comprehensive conversion efficiency and the thermoelectric conversion efficiency to improve the accuracy of the calculation.

[0054] Specifically, taking the power generation efficiency of compressed air energy storage as the key basis, under the condition of stable compression conditions, the power generation efficiency is determined by the product of the electricity, heat, and gas conversion efficiency of the turbine and the thermoelectric conversion efficiency of the heat exchanger. Specifically: Calculate the power generation efficiency of compressed air energy storage:

[0055] η 储 =η 透平 +η 换热器 ;

[0056] Among them, η 透平 is the comprehensive conversion efficiency of the turbine, η 换热器 is the thermoelectric conversion efficiency of the heat exchanger.

[0057] In an embodiment of the present application, the power generation weights of the wind power generation system, the photovoltaic power generation system, and the salt cavern compressed air energy storage system are adjusted according to the power generation efficiency of the salt cavern integrated energy system, including: if the power generation efficiency of the salt cavern compressed air energy storage system is greater than or equal to the target efficiency threshold, the power generation weights of the wind power generation system, the photovoltaic power generation system, and the salt cavern compressed air energy storage system are adjusted according to a first preset ratio; if the power generation efficiency of the salt cavern compressed air energy storage system is less than the target efficiency threshold, the power generation weights of the wind power generation system, the photovoltaic power generation system, and the salt cavern compressed air energy storage system are adjusted according to a second preset ratio.

[0058] The first preset ratio and the second preset ratio can be set according to actual needs and are not specifically limited.

[0059] It can be understood that the embodiment of the present application can allocate more power generation signals to wind and solar power generation according to the proportional allocation method when the power generation efficiency of the pressure storage is lower than the preset value; when the power generation efficiency of the pressure storage is higher than the preset value, more power generation signals are allocated to the pressure storage. Through such dynamic proportional allocation, the power generation on the turbine side can be flexibly adjusted according to the actual situation, so as to maintain the stable and efficient output of electricity of the entire energy system.

[0060] It should be noted that during specific operations, a manually set preset value is set. It is determined through long-term system operation experience and is specifically used to measure whether the pressure storage is suitable for power generation. When the power generation efficiency of the pressure storage is lower than this preset value, it means that the efficiency of the pressure storage power generation is relatively low at this time. The proportional allocation method will tend to allocate more power generation signals to wind and solar power generation, allowing wind and solar power generation to occupy a larger proportion of the overall power generation to ensure that the system can efficiently utilize energy for power generation. On the contrary, if the power generation efficiency of the pressure storage is higher than the preset value, it indicates that the pressure storage has a good power generation advantage at the moment. The proportional allocation method will accordingly allocate more power generation signals to the pressure storage, allowing it to assume a more important power generation share in the power generation process. Through this dynamic proportional allocation, the power generation on the turbine side can be flexibly adjusted according to the actual situation, maintaining the stable and efficient output of electricity for the entire energy system.

[0061] Specifically, by setting a preset value based on the summary of system operation experience, the pressure storage power generation efficiency is compared with the preset value. When the pressure storage power generation efficiency is lower than the preset value, the proportional allocation method tends to allocate more power generation signals to wind and solar power generation; when the pressure storage power generation efficiency is higher than the preset value, more power generation signals are allocated to pressure storage; specifically:

[0062] Compare power generation efficiency with the preset value η 预设 :(1) If η 储 <η 预设 , the power generation is distributed proportionally, for example, wind and solar power generation accounts for 70% and energy storage accounts for 30%. (2) If η 储 ≥η预设 , the proportion of energy storage power generation is increased, for example, wind and solar power generation accounts for 40%, and energy storage accounts for 60%. This dynamically adjusts the allocation ratio to ensure that the total power generation of the system meets the needs of the grid, while giving priority to wind and solar power generation.

[0063] According to the combined operation of salt cavern integrated energy proposed in the embodiment of the present application, the embodiment of the present application establishes a model of the salt cavern integrated energy system through wind power generation, photovoltaic power generation, salt cavern compressed air energy storage system and transmission route. Based on the power generation of the wind power generation system, the power generation of the photovoltaic power generation system and the power demand, the salt cavern compressed air energy storage system energy storage and power generation are controlled by the model of the salt cavern integrated energy system. When the salt cavern integrated energy system has sufficient power, the generated electricity is transmitted as a power source to the compressor end of the compressed air energy storage, driving the compressor to compress and store air in the salt cavern, realizing the conversion of electrical energy into compressed air potential energy. When the output of photovoltaic and wind power is insufficient or the power demand is peak, the high-pressure air stored in the salt cavern releases energy through the turbine expander to generate electricity, and the compressed air potential energy is converted back into electrical energy, which is reversely supplemented to the entire energy supply system, completing the cyclic conversion process of electrical energy among the three, and improving the overall power generation efficiency and operational stability of the system.

[0064] Next, a joint modeling device for a salt cavern integrated energy system proposed in accordance with an embodiment of the present application will be described with reference to the accompanying drawings.

[0065] Figure 3 Schematic diagram of a block diagram of a joint modeling device for a salt cavern integrated energy system according to an embodiment of the present application.

[0066] like Figure 3 As shown, the joint modeling device 10 of the salt cavern integrated energy system includes: an acquisition module 100 , an identification module 200 and a control module 300 .

[0067] Among them, the acquisition module 100 is used to obtain the physical structure of the salt cavern integrated energy system; the identification module 200 is used to identify the wind power generation system, photovoltaic power generation system, salt cavern compressed air energy storage system and transmission route in the physical structure, and establish a model of the salt cavern integrated energy system based on the wind power generation system, photovoltaic power generation system, salt cavern compressed air energy storage system and transmission route; the control module 300 is used to control the energy storage and power generation of the salt cavern compressed air energy storage system using the model of the salt cavern integrated energy system according to the power generation of the wind power generation system, the power generation of the photovoltaic power generation system and the required power.

[0068] It should be noted that the above explanation of the embodiment of the joint modeling method of the salt cavern integrated energy system is also applicable to the joint modeling device of the salt cavern integrated energy system of this embodiment, and will not be repeated here.

[0069] According to the joint modeling device for the salt cavern integrated energy system proposed in the embodiment of the present application, the embodiment of the present application establishes a model of the salt cavern integrated energy system through wind power generation, photovoltaic power generation, salt cavern compressed air energy storage system and transmission route. Based on the power generation of the wind power generation system, the power generation of the photovoltaic power generation system and the power demand, the salt cavern integrated energy system model is used to control the energy storage and power generation of the salt cavern compressed air energy storage system. When the salt cavern integrated energy system has sufficient power, the generated electricity is transmitted as a power source to the compressor end of the compressed air energy storage, driving the compressor to compress and store air in the salt cavern, realizing the conversion of electrical energy into compressed air potential energy. When the output of photovoltaic and wind power is insufficient or the power demand is peak, the high-pressure air stored in the salt cavern releases energy through the turbine expander to generate electricity, and the compressed air potential energy is converted back into electrical energy, which is reversely supplemented to the entire energy supply system, completing the cyclic conversion process of electrical energy among the three, thereby improving the overall power generation efficiency and operational stability of the system.

[0070] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include:

[0071] Memory 401 , processor 402 , and computer programs stored in the memory 401 and executable on the processor 402 .

[0072] When the processor 402 executes the program, the joint modeling method of the salt cavern integrated energy system provided in the above embodiment is implemented.

[0073] Furthermore, the electronic device further includes:

[0074] The communication interface 403 is used for communication between the memory 401 and the processor 402 .

[0075] The memory 401 is used to store computer programs that can be run on the processor 402 .

[0076] The memory 401 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0077] If the memory 401, the processor 402, and the communication interface 403 are implemented independently, the communication interface 403, the memory 401, and the processor 402 can be connected to each other via a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0078] Optionally, in a specific implementation, if the memory 401, the processor 402 and the communication interface 403 are integrated on a chip, the memory 401, the processor 402 and the communication interface 403 can communicate with each other through an internal interface.

[0079] The processor 402 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0080] An embodiment of the present application further provides a computer-readable storage medium having a computer program or instruction stored thereon. When the computer program or instruction is executed by a processor, the above-mentioned joint modeling method of the salt cavern integrated energy system is implemented.

[0081] An embodiment of the present application also provides a computer program product, including a computer program or instructions, which, when executed, implements the above-mentioned joint modeling method for the salt cavern integrated energy system.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this application, "N" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0084] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing a custom logical function or process step, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed in a different order than shown or discussed, including performing functions in a substantially simultaneous manner or in a reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application pertain.

[0085] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiment, the N steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, it can be implemented using any one or a combination of the following technologies known in the art: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0086] Those skilled in the art will understand that all or part of the steps in the method of the above embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

Claims

1. A joint modeling method for a salt cavern integrated energy system, characterized in that: The following steps are involved: Obtain the physical structure of the salt cavern integrated energy system; Identifying a wind power generation system, a photovoltaic power generation system, a salt cavern compressed air energy storage system, and a transmission route in the physical structure, and establishing a model of the salt cavern integrated energy system based on the wind power generation system, the photovoltaic power generation system, the salt cavern compressed air energy storage system, and the transmission route; According to the power generation of the wind power generation system, the power generation of the photovoltaic power generation system and the required power, the model of the salt cavern integrated energy system is used to control the energy storage and power generation of the salt cavern compressed air energy storage system.

2. The joint modeling method of the salt cavern integrated energy system according to claim 1 is characterized in that: The model of the salt cavern integrated energy system includes a first constraint and a second constraint, wherein: The first constraint condition is that the total power generation of the wind power generation system and the power generation of the photovoltaic power generation system is greater than or equal to the required power; The second constraint condition is that the power generated by the surplus electricity is within the power range of normal operation of the compression-side compressor of the salt cavern compressed air energy storage system, wherein the surplus electricity is calculated based on the total power generation of the wind power generation system and the power generation of the photovoltaic power generation system and the required power.

3. The joint modeling method of the salt cavern integrated energy system according to claim 2 is characterized in that: Before using the model of the salt cavern integrated energy system to control the energy storage and power generation of the salt cavern compressed air energy storage system, the method includes: Identifying whether the power generation of the wind power generation system, the power generation of the photovoltaic power generation system, and the required power meet a first constraint condition and a second constraint condition; If the power generation of the wind power generation system, the power generation of the photovoltaic power generation system, and the required power meet the first constraint condition and the second constraint condition, controlling the salt cavern compressed air energy storage system to store energy; If the power generation of the wind power generation system, the power generation of the photovoltaic power generation system, and the required power do not satisfy at least one of the first constraint condition and the second constraint condition, the salt cavern compressed air energy storage system is controlled to generate power.

4. The joint modeling method of the salt cavern integrated energy system according to claim 2 is characterized in that: The method of controlling the salt cavern compressed air energy storage system to generate electricity by utilizing the model of the salt cavern integrated energy system includes: Obtaining the power generation efficiency of the salt cavern integrated energy system; Adjusting the power generation weights of the wind power generation system, the photovoltaic power generation system, and the salt cavern compressed air energy storage system according to the power generation efficiency of the salt cavern integrated energy system; The salt cavern compressed air energy storage system is controlled to generate electricity according to the power generation ratio.

5. The joint modeling method of the salt cavern integrated energy system according to claim 4 is characterized in that: The obtaining of the power generation efficiency of the turbine on the turbine side of the salt cavern integrated energy system includes: Obtain the comprehensive conversion efficiency of the turbine and the thermoelectric conversion efficiency of the heat exchanger; The power generation efficiency of the salt cavern integrated energy system is determined according to the comprehensive conversion efficiency and the thermoelectric conversion efficiency.

6. The joint modeling method of the salt cavern integrated energy system according to claim 4 is characterized in that: The adjusting the power generation weights of the wind power generation system, the photovoltaic power generation system, and the salt cavern compressed air energy storage system according to the power generation efficiency of the salt cavern integrated energy system includes: If the power generation efficiency of the salt cavern compressed air energy storage system is greater than or equal to a target efficiency threshold, adjusting the power generation weights of the wind power generation system, the photovoltaic power generation system, and the salt cavern compressed air energy storage system according to a first preset ratio; If the power generation efficiency of the salt cavern compressed air energy storage system is lower than the target efficiency threshold, the power generation weights of the wind power generation system, the photovoltaic power generation system, and the salt cavern compressed air energy storage system are adjusted according to a second preset ratio.

7. A joint modeling device for a salt cavern integrated energy system, characterized in that: include: An acquisition module is used to obtain the physical structure of the salt cavern integrated energy system; an identification module for identifying a wind power generation system, a photovoltaic power generation system, a salt cavern compressed air energy storage system, and a transmission route in the physical structure, and establishing a model of the salt cavern integrated energy system based on the wind power generation system, the photovoltaic power generation system, the salt cavern compressed air energy storage system, and the transmission route; A control module is used to control the energy storage and power generation of the salt cavern compressed air energy storage system using a model of the salt cavern integrated energy system according to the power generation of the wind power generation system, the power generation of the photovoltaic power generation system and the power demand.

8. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the joint modeling method for the salt cavern integrated energy system according to any one of claims 1 to 6.

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 joint modeling method of the salt cavern integrated energy system according to any one of claims 1 to 6.

10. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, is used to implement the joint modeling method of the salt cavern integrated energy system according to any one of claims 1 to 6.

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