Compressed air energy storage system, compressed air energy storage intake conditioning method, device, apparatus, storage medium and program product

Abstract

The application relates to a compressed air energy storage system, a compressed air energy storage air intake adjusting method, device and equipment, a storage medium and a program product, and relates to the technical field of novel energy storage. The system can solve the problem of large energy loss in the pressure relief process of a gas storage tank. The system comprises a compressor, a high-pressure gas storage tank, a sub-high-pressure gas storage tank, a high-pressure expander, a sub-high-pressure expander and a generator; the compressor is connected with the high-pressure gas storage tank; the high-pressure gas storage tank is connected with the sub-high-pressure gas storage tank and the high-pressure expander; the sub-high-pressure gas storage tank is connected with the sub-high-pressure expander; the high-pressure expander and the sub-high-pressure expander are connected with the generator; the compressor compresses air to a high-pressure state and stores the air in the high-pressure gas storage tank; the high-pressure gas storage tank releases high-pressure gas into the sub-high-pressure gas storage tank and releases high-pressure gas into the high-pressure expander to do work; the sub-high-pressure gas storage tank releases sub-high-pressure gas into the sub-high-pressure expander to do work; and the high-pressure expander and the sub-high-pressure expander are used for rotating and driving the generator to generate electricity.

Description

Technical Field

[0001] This application relates to the field of new energy storage technology, and in particular to a compressed air energy storage system, a compressed air energy storage intake regulation method, an apparatus, a computer device, a computer-readable storage medium, and a computer program product. Background Technology

[0002] Compressed air energy storage (CASS) is a large-scale energy storage technology that compresses and stores air, releasing it to generate electricity when needed. This technology is primarily used to balance electricity supply and demand, improve grid stability, and increase the utilization rate of renewable energy. During periods of low electricity demand, an electric motor drives a compressor to compress and store air in a storage tank. During peak demand periods, the compressed air is released, expands, and drives a generator to produce electricity. It offers advantages such as large storage capacity, long storage time, short construction time, and low construction cost.

[0003] Traditional compressed air energy storage technologies employ afterburning, which is inefficient and produces combustion pollution. Currently, most domestic compressed air energy storage systems use adiabatic technology, which preserves the heat generated during compression and utilizes it during the expansion phase. Although this improves energy storage efficiency compared to traditional technologies, it still suffers from significant energy loss. Summary of the Invention

[0004] Therefore, it is necessary to provide a compressed air energy storage system, a compressed air energy storage intake regulation method, an apparatus, a computer device, a computer-readable storage medium, and a computer program product to address the above-mentioned technical problems.

[0005] In a first aspect, this application provides a compressed air energy storage system, the system comprising: a compressor, a high-pressure air storage tank, a sub-high-pressure air storage tank, a high-pressure expander, a sub-high-pressure expander, and a generator; the compressor is connected to the high-pressure air storage tank, the high-pressure air storage tank is connected to both the sub-high-pressure air storage tank and the high-pressure expander, the sub-high-pressure air storage tank is connected to the sub-high-pressure expander, and the high-pressure expander and the sub-high-pressure expander are each connected to the generator;

[0006] The compressor is used to compress air to a high-pressure state and store it in the high-pressure air tank;

[0007] The high-pressure gas storage tank is used to release high-pressure gas into the sub-high-pressure gas storage tank, and the released high-pressure gas enters the high-pressure expander to do work;

[0008] The sub-high pressure gas storage tank is used to release sub-high pressure gas into the sub-high pressure expander to do work;

[0009] The high-pressure expander and the sub-high-pressure expander are used to rotate and drive the generator to generate electricity.

[0010] In one embodiment, the system further includes: a first heat exchanger, a second heat exchanger, and a third heat exchanger, wherein the first heat exchanger is connected in series between the compressor and the high-pressure gas storage tank, the second heat exchanger is connected in series between the high-pressure gas storage tank and the high-pressure expander, and the third heat exchanger is connected in series between the secondary high-pressure gas storage tank and the secondary high-pressure expander.

[0011] The first heat exchanger, the second heat exchanger, and the third heat exchanger are all used for thermal energy management during the air compression and expansion process.

[0012] In one embodiment, the system further includes a heat storage device, which is connected to the first heat exchanger, the second heat exchanger and the third heat exchanger respectively.

[0013] The heat storage device is used to store the heat transferred by the first heat exchanger and to provide the stored heat to the second and third heat exchangers.

[0014] In one embodiment, the high-pressure gas storage tank is further used to release the high-pressure gas into the secondary high-pressure gas storage tank until the gas pressure in the high-pressure gas storage tank is reduced to the first rated working gas pressure of the high-pressure expander.

[0015] The high-pressure gas storage tank is also used to release the high-pressure gas into the high-pressure expander to do work until the gas pressure in the high-pressure gas storage tank drops from the first rated working gas pressure to the second rated working gas pressure of the secondary high-pressure expander, at which point the release of the high-pressure gas stops.

[0016] In one embodiment, the sub-high pressure gas storage tank is further configured to start releasing the sub-high pressure gas into the sub-high pressure expander to do work when the high pressure gas storage tank stops releasing the high pressure gas, until the gas pressure in the sub-high pressure gas storage tank is reduced from the second rated working gas pressure to atmospheric pressure.

[0017] Secondly, this application also provides a compressed air energy storage intake regulation method, applied to a compressed air energy storage system, the method comprising:

[0018] In response to a power generation command for the compressed air energy storage system, high-pressure gas is released from the high-pressure storage tank into the sub-high-pressure storage tank until the gas pressure in the high-pressure storage tank is reduced to the first rated working gas pressure of the high-pressure expander.

[0019] The high-pressure gas is released from the high-pressure gas storage tank and enters the high-pressure expander to do work until the gas pressure in the high-pressure gas storage tank drops from the first rated working gas pressure to the second rated working gas pressure of the high-pressure expander, at which point the release of the high-pressure gas stops.

[0020] The sub-high pressure gas is released from the sub-high pressure gas storage tank and enters the sub-high pressure expander to do work until the gas pressure in the sub-high pressure gas storage tank is reduced from the second rated working gas pressure to atmospheric pressure.

[0021] Thirdly, this application also provides a compressed air energy storage intake regulating device, comprising:

[0022] The power generation preparation module is used to release high-pressure gas from the high-pressure gas storage tank into the sub-high-pressure gas storage tank in response to a power generation command for the compressed air energy storage system, until the gas pressure in the high-pressure gas storage tank is reduced to the first rated working gas pressure of the high-pressure expander.

[0023] The primary power generation module is used to release the high-pressure gas from the high-pressure gas storage tank into the high-pressure expander to do work until the gas pressure in the high-pressure gas storage tank drops from the first rated working gas pressure to the second rated working gas pressure of the secondary high-pressure expander, at which point the release of the high-pressure gas stops.

[0024] The secondary power generation module is used to release sub-high pressure gas from the sub-high pressure gas storage tank into the sub-high pressure expander to do work until the gas pressure in the sub-high pressure gas storage tank is reduced from the second rated working gas pressure to atmospheric pressure.

[0025] Fourthly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0026] In response to a power generation command for the compressed air energy storage system, high-pressure gas is released from the high-pressure gas storage tank into the secondary high-pressure gas storage tank until the gas pressure in the high-pressure gas storage tank drops to the first rated operating pressure of the high-pressure expander; the high-pressure gas is then released from the high-pressure gas storage tank into the high-pressure expander to perform work until the gas pressure in the high-pressure gas storage tank drops from the first rated operating pressure to the second rated operating pressure of the secondary high-pressure expander, at which point the release of the high-pressure gas stops; and the secondary high-pressure gas is then released from the secondary high-pressure gas storage tank into the secondary high-pressure expander to perform work until the gas pressure in the secondary high-pressure gas storage tank drops from the second rated operating pressure to atmospheric pressure.

[0027] Fifthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0028] In response to a power generation command for the compressed air energy storage system, high-pressure gas is released from the high-pressure gas storage tank into the secondary high-pressure gas storage tank until the gas pressure in the high-pressure gas storage tank drops to the first rated operating pressure of the high-pressure expander; the high-pressure gas is then released from the high-pressure gas storage tank into the high-pressure expander to perform work until the gas pressure in the high-pressure gas storage tank drops from the first rated operating pressure to the second rated operating pressure of the secondary high-pressure expander, at which point the release of the high-pressure gas stops; and the secondary high-pressure gas is then released from the secondary high-pressure gas storage tank into the secondary high-pressure expander to perform work until the gas pressure in the secondary high-pressure gas storage tank drops from the second rated operating pressure to atmospheric pressure.

[0029] Sixthly, this application also provides a computer program product, including a computer program that, when executed by a processor, performs the following steps:

[0030] In response to a power generation command for the compressed air energy storage system, high-pressure gas is released from the high-pressure gas storage tank into the secondary high-pressure gas storage tank until the gas pressure in the high-pressure gas storage tank drops to the first rated operating pressure of the high-pressure expander; the high-pressure gas is then released from the high-pressure gas storage tank into the high-pressure expander to perform work until the gas pressure in the high-pressure gas storage tank drops from the first rated operating pressure to the second rated operating pressure of the secondary high-pressure expander, at which point the release of the high-pressure gas stops; and the secondary high-pressure gas is then released from the secondary high-pressure gas storage tank into the secondary high-pressure expander to perform work until the gas pressure in the secondary high-pressure gas storage tank drops from the second rated operating pressure to atmospheric pressure.

[0031] The aforementioned compressed air energy storage system, compressed air energy storage intake regulation method, device, computer equipment, computer-readable storage medium, and computer program product, by setting up two sets of air storage tanks with different pressures (high-pressure air storage tank and sub-high-pressure air storage tank), respectively connected to high-pressure expanders and sub-high-pressure expanders with different rated working pressures, flexibly mixes the high-pressure gas in the high-pressure air storage tank and the sub-high-pressure air storage tank. That is, by adding a set of sub-high-pressure air storage tanks, the energy during the high-pressure gas depressurization process is absorbed, and the expansion power generation process is divided into two different pressure stages, effectively avoiding energy loss caused by depressurization. Furthermore, the two sets of air storage tanks are connected to different expanders, which can increase the working efficiency of the expanders, thereby improving the working depth of the compressed air energy storage system. This solves the problem of large energy loss during the depressurization process of adiabatic compressed air energy storage, and effectively improves the power generation flexibility and energy storage efficiency of the compressed air energy storage system. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a structural block diagram of a compressed air energy storage system in one embodiment;

[0034] Figure 2 This is a structural block diagram of a compressed air energy storage system in another embodiment;

[0035] Figure 3 Here is a structural block diagram of the compressed air energy storage system in another embodiment;

[0036] Figure 4 This is a flowchart illustrating a compressed air energy storage intake regulation method in one embodiment;

[0037] Figure 5 This is a structural block diagram of a compressed air energy storage intake regulating device in one embodiment;

[0038] Figure 6 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0040] In current adiabatic compressed air energy storage systems, air is primarily compressed to a high-pressure state (10MPa) by a compressor and stored in an air tank. The high-pressure gas in the tank then drives an expander to perform work. The rated inlet pressure of the expander is typically set at around 7-8MPa. Since the initial pressure in the air tank is higher than the expander's rated inlet pressure, it is necessary to release the pressure in the tank through a pressure relief valve to adjust it to the expander's rated inlet pressure. This pressure release process results in some energy loss. Subsequently, as the expander performs further work, the pressure in the air tank gradually decreases below the expander's rated inlet pressure, leading to a reduction in the expander's efficiency.

[0041] To address this, this application employs two sets of gas storage tanks with different pressures, utilizing a flexible mixing method between the high-pressure gas in the high-pressure tank and the sub-high-pressure gas tank to avoid energy loss caused by pressure relief. Furthermore, connecting the two sets of gas storage tanks to different expanders increases the expander's efficiency and improves the depth of work performed by the compressed air energy storage system.

[0042] In one embodiment, such as Figure 1 As shown, a compressed air energy storage system is provided, which includes: a compressor, a high-pressure air storage tank, a sub-high-pressure air storage tank, a high-pressure expander, a sub-high-pressure expander, and a generator; the compressor is connected to the high-pressure air storage tank, the high-pressure air storage tank is connected to both the sub-high-pressure air storage tank and the high-pressure expander, the sub-high-pressure air storage tank is connected to the sub-high-pressure expander, and the high-pressure expander and the sub-high-pressure expander are connected to the generator respectively;

[0043] A compressor is used to compress air to a high pressure state and store it in a high-pressure air tank;

[0044] High-pressure gas storage tank is used to release high-pressure gas into a sub-high-pressure gas storage tank, and to release high-pressure gas into a high-pressure expander to do work.

[0045] The sub-high pressure gas storage tank is used to release sub-high pressure gas into the sub-high pressure expander to do work.

[0046] High-pressure expanders and sub-high-pressure expanders are used to rotate and drive generators to generate electricity.

[0047] Specifically, in Figure 1 In the compressed air energy storage system shown, the rated operating pressure of the high-pressure expander is 8 MPa, and it is connected to the high-pressure gas storage tank (10 MPa); the rated operating pressure of the secondary high-pressure expander is 4 MPa, and it is connected to the secondary high-pressure gas storage tank (4 MPa). During the expansion and power generation stage, high-pressure gas is first released from the high-pressure gas storage tank into the secondary high-pressure gas storage tank until the gas pressure in the high-pressure gas storage tank drops to 8 MPa (at which point the gas pressure in the secondary high-pressure gas storage tank will increase to 4 MPa). Then, the high-pressure gas enters the high-pressure expander to do work. When the gas pressure in the high-pressure tank drops to 4 MPa, the system switches to the secondary high-pressure gas storage tank to release secondary high-pressure gas into the secondary high-pressure expander to continue doing work. The secondary high-pressure gas storage tank is directly connected to the secondary high-pressure expander to do work, thus effectively utilizing the pressure loss between 10 MPa and 8 MPa in the high-pressure gas storage tank, improving the gas's work efficiency and depth.

[0048] The aforementioned compressed air energy storage system, by setting up two sets of air storage tanks with different pressures (high-pressure air storage tank and sub-high-pressure air storage tank), is connected to a high-pressure expander and a sub-high-pressure expander with different rated working pressures, respectively. The high-pressure gas in the high-pressure air storage tank and the sub-high-pressure air storage tank are flexibly mixed. That is, by adding a set of sub-high-pressure air storage tanks, the energy during the depressurization process of the high-pressure gas is absorbed, and the expansion and power generation process is divided into two different pressure stages, which effectively avoids the energy loss caused by depressurization. Furthermore, the two sets of air storage tanks are connected to different expanders, which can increase the working efficiency of the expanders, thereby improving the working depth of the compressed air energy storage system. This solves the problem of large energy loss during the depressurization process of the air storage tank in adiabatic compressed air energy storage, and effectively improves the power generation flexibility and energy storage efficiency of the compressed air energy storage system.

[0049] In one embodiment, such as Figure 2 As shown, the compressed air energy storage system also includes: a first heat exchanger, a second heat exchanger, and a third heat exchanger. The first heat exchanger is connected in series between the compressor and the high-pressure air tank, the second heat exchanger is connected in series between the high-pressure air tank and the high-pressure expander, and the third heat exchanger is connected in series between the sub-high-pressure air tank and the sub-high-pressure expander. The first heat exchanger, the second heat exchanger, and the third heat exchanger are all used for thermal energy management during the air compression or expansion process.

[0050] In the compressed air energy storage system, the heat exchanger optimizes the compression and expansion process of air through thermal energy management, ensuring system efficiency and equipment safety. Its specific functions include cooling compressed air during the charging phase and heating expanded air during the discharging phase.

[0051] Specifically, during the compression charging phase, the first heat exchanger transfers heat to a cooling medium (such as water or air) after air compression, thereby lowering the air temperature so that the compressed air can be stored at an appropriate temperature. During the expansion power generation process, the second and third heat exchangers increase the air temperature by transferring heat from an external heat source (such as combustion gases or other heat sources) to the high-pressure gas, making the expansion process more efficient, reducing energy loss, and ensuring the normal operation of the expander.

[0052] In one embodiment, such as Figure 3 As shown, the compressed air energy storage system also includes: a heat storage device, which is connected to the first heat exchanger, the second heat exchanger and the third heat exchanger respectively; the heat storage device is used to store the heat transferred by the first heat exchanger and to provide the stored heat to the second heat exchanger and the third heat exchanger.

[0053] Among them, a thermal storage device is a device that can store and release thermal energy. Its main function is to store thermal energy in a certain medium so that it can be released when needed.

[0054] Specifically, during the compression charging phase, the first and third heat exchangers transfer heat to the heat storage device after air compression, thereby lowering the air temperature and allowing the compressed air to be stored at an appropriate temperature. During the expansion power generation process, the second and third heat exchangers increase the air temperature by transferring heat from the heat storage device to the high-pressure gas, making the expansion process more efficient, reducing energy loss, and ensuring the normal operation of the expander.

[0055] In one embodiment, the high-pressure gas storage tank is further used to release high-pressure gas into the secondary high-pressure gas storage tank until the gas pressure in the high-pressure gas storage tank drops to the first rated working gas pressure of the high-pressure expander; the high-pressure gas storage tank is also used to release high-pressure gas into the high-pressure expander to do work until the gas pressure in the high-pressure gas storage tank drops from the first rated working gas pressure to the second rated working gas pressure of the secondary high-pressure expander, and then the release of high-pressure gas stops.

[0056] For example, the first rated working pressure of a high-pressure expander can be 8 MPa, and the second rated working pressure of a secondary high-pressure expander can be 4 MPa.

[0057] Specifically, during the expansion power generation stage, the high-pressure gas storage tank first releases high-pressure gas into the secondary high-pressure gas storage tank until the gas pressure in the high-pressure gas storage tank drops to 8 MPa. At the same time, the gas pressure in the secondary high-pressure gas storage tank increases to 4 MPa. Then, the high-pressure gas is released into the high-pressure expander to do work. When the gas pressure in the high-pressure tank drops to 4 MPa, the release of high-pressure gas stops, and the process switches to the secondary high-pressure gas storage tank to release secondary high-pressure gas into the secondary high-pressure expander to continue doing work. The secondary high-pressure gas storage tank is directly connected to the secondary high-pressure expander to do work, which can effectively improve the gas's work efficiency and depth.

[0058] In one embodiment, the sub-high pressure gas storage tank is also used to start releasing sub-high pressure gas into the sub-high pressure expander to do work when the high pressure gas storage tank stops releasing high pressure gas, until the gas pressure in the sub-high pressure gas storage tank drops from the second rated working gas pressure to atmospheric pressure.

[0059] Specifically, when it is detected that the high-pressure gas storage tank has stopped releasing high-pressure gas, the secondary high-pressure gas storage tank begins to release secondary high-pressure gas into the secondary high-pressure expander to do work, until the gas pressure in the secondary high-pressure gas storage tank drops from the second rated working gas pressure to atmospheric pressure.

[0060] In one embodiment, such as Figure 4 As shown, a compressed air energy storage intake regulation method is provided, which is applied to... Figure 1 Taking a compressed air energy storage system as an example, the following steps are included:

[0061] In step S401, in response to a power generation command for the compressed air energy storage system, high-pressure gas is released from the high-pressure storage tank into the sub-high-pressure storage tank until the gas pressure in the high-pressure storage tank is reduced to the first rated operating pressure of the high-pressure expander.

[0062] In step S402, high-pressure gas is released from the high-pressure gas storage tank into the high-pressure expander to perform work until the gas pressure in the high-pressure gas storage tank drops from the first rated working gas pressure to the second rated working gas pressure of the secondary high-pressure expander, at which point the release of high-pressure gas stops.

[0063] In step S403, the sub-high pressure gas is released from the sub-high pressure gas storage tank and enters the sub-high pressure expander to do work until the gas pressure in the sub-high pressure gas storage tank is reduced from the second rated working gas pressure to atmospheric pressure.

[0064] Specifically, in response to a power generation command for the compressed air energy storage system, the high-pressure gas is released from the high-pressure storage tank into the secondary high-pressure storage tank until the pressure in the high-pressure storage tank drops to the first rated operating pressure of the high-pressure expander; high-pressure gas is then released from the high-pressure storage tank into the high-pressure expander to perform work until the pressure in the high-pressure storage tank drops from the first rated operating pressure to the second rated operating pressure of the secondary high-pressure expander, at which point the release of high-pressure gas stops; and secondary high-pressure gas is then released from the secondary high-pressure storage tank into the secondary high-pressure expander to perform work until the pressure in the secondary high-pressure storage tank drops from the second rated operating pressure to atmospheric pressure.

[0065] For specific limitations regarding the above steps, please refer to relevant embodiments of compressed air energy storage systems, which will not be repeated here.

[0066] In the aforementioned compressed air energy storage intake regulation method, two sets of air storage tanks with different pressures (high-pressure air storage tank and sub-high-pressure air storage tank) are set up and connected to high-pressure expanders and sub-high-pressure expanders with different rated working pressures, respectively. The high-pressure gas in the high-pressure air storage tank and the sub-high-pressure air storage tank are flexibly mixed. That is, by adding a set of sub-high-pressure air storage tanks, the energy during the high-pressure gas depressurization process is absorbed, and the expansion power generation process is divided into two different pressure stages, which effectively avoids the energy loss caused by depressurization. Moreover, the two sets of air storage tanks are connected to different expanders, which can increase the working efficiency of the expanders, thereby improving the working depth of the compressed air energy storage system. This solves the problem of large energy loss during the depressurization process of the air storage tank in adiabatic compressed air energy storage, and effectively improves the power generation flexibility and energy storage efficiency of the compressed air energy storage system.

[0067] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0068] Based on the same inventive concept, this application also provides a compressed air energy storage intake regulating device for implementing the compressed air energy storage intake regulating method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations of one or more compressed air energy storage intake regulating device embodiments provided below can be found in the limitations of the compressed air energy storage intake regulating method described above, and will not be repeated here.

[0069] In one exemplary embodiment, such as Figure 5 As shown, a compressed air energy storage intake regulating device is provided, comprising:

[0070] The power generation preparation module 501 is used to release high-pressure gas from the high-pressure gas storage tank into the sub-high-pressure gas storage tank in response to a power generation command for the compressed air energy storage system, until the gas pressure in the high-pressure gas storage tank is reduced to the first rated working gas pressure of the high-pressure expander.

[0071] The primary power generation module 502 is used to release the high-pressure gas from the high-pressure gas storage tank into the high-pressure expander to do work, until the gas pressure in the high-pressure gas storage tank drops from the first rated working gas pressure to the second rated working gas pressure of the secondary high-pressure expander, and then stops releasing the high-pressure gas.

[0072] The secondary power generation module 503 is used to release sub-high pressure gas from the sub-high pressure gas storage tank into the sub-high pressure expander to do work until the gas pressure in the sub-high pressure gas storage tank is reduced from the second rated working gas pressure to atmospheric pressure.

[0073] Specific limitations regarding the compressed air energy storage intake regulation device can be found in the limitations of the compressed air energy storage intake regulation method described above, and will not be repeated here. Each module in the aforementioned compressed air energy storage intake regulation device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0074] In one exemplary embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 6 As shown, the computer device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, Near Field Communication (NFC), or other technologies. When executed by the processor, the computer program implements a compressed air energy storage intake regulation method. The display unit is used to form a visually visible image and can be a display screen, projection device, or virtual reality imaging device. The display screen can be an LCD screen or an e-ink screen. The input device of the computer device can be a touch layer covering the display screen, or buttons, trackballs, or touchpads set on the casing of the computer device, or external keyboards, touchpads, or mice, etc.

[0075] Those skilled in the art will understand that Figure 6 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0076] In one embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above method embodiments.

[0077] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps in the above method embodiments.

[0078] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.

[0079] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0080] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0081] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0082] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A compressed air energy storage system, characterized in that, The system includes: a compressor, a high-pressure gas storage tank, a sub-high-pressure gas storage tank, a high-pressure expander, a sub-high-pressure expander, and a generator; the compressor is connected to the high-pressure gas storage tank, the high-pressure gas storage tank is connected to both the sub-high-pressure gas storage tank and the high-pressure expander, the sub-high-pressure gas storage tank is connected to the sub-high-pressure expander, and the high-pressure expander and the sub-high-pressure expander are each connected to the generator; The compressor is used to compress air to a high-pressure state and store it in the high-pressure air tank; The high-pressure gas storage tank is used to release high-pressure gas into the sub-high-pressure gas storage tank, and the released high-pressure gas enters the high-pressure expander to do work; The sub-high pressure gas storage tank is used to release sub-high pressure gas into the sub-high pressure expander to do work; The high-pressure expander and the sub-high-pressure expander are used to rotate and drive the generator to generate electricity; The high-pressure gas storage tank is also used to release the high-pressure gas into the secondary high-pressure gas storage tank until the gas pressure in the high-pressure gas storage tank drops to the first rated working gas pressure of the high-pressure expander. The high-pressure gas storage tank is also used to release the high-pressure gas into the high-pressure expander to do work until the gas pressure in the high-pressure gas storage tank drops from the first rated working gas pressure to the second rated working gas pressure of the secondary high-pressure expander, at which point the release of the high-pressure gas stops.

2. The system according to claim 1, characterized in that, The system further includes: a first heat exchanger, a second heat exchanger, and a third heat exchanger, wherein the first heat exchanger is connected in series between the compressor and the high-pressure gas storage tank, the second heat exchanger is connected in series between the high-pressure gas storage tank and the high-pressure expander, and the third heat exchanger is connected in series between the secondary high-pressure gas storage tank and the secondary high-pressure expander. The first heat exchanger, the second heat exchanger, and the third heat exchanger are all used for thermal energy management during the air compression or expansion process.

3. The system according to claim 2, characterized in that, The system further includes a heat storage device, which is connected to the first heat exchanger, the second heat exchanger and the third heat exchanger respectively. The heat storage device is used to store the heat transferred by the first heat exchanger and to provide the stored heat to the second and third heat exchangers.

4. The system according to any one of claims 1 to 3, characterized in that, The sub-high pressure gas storage tank is also used to start releasing the sub-high pressure gas into the sub-high pressure expander to do work when the high pressure gas storage tank stops releasing the high pressure gas, until the gas pressure in the sub-high pressure gas storage tank is reduced from the second rated working gas pressure to atmospheric pressure.

5. A method for regulating the intake air of compressed air energy storage, characterized in that, Applied to compressed air energy storage systems, the method includes: In response to a power generation command for the compressed air energy storage system, high-pressure gas is released from the high-pressure storage tank into the sub-high-pressure storage tank until the gas pressure in the high-pressure storage tank is reduced to the first rated working gas pressure of the high-pressure expander. The high-pressure gas is released from the high-pressure gas storage tank and enters the high-pressure expander to do work until the gas pressure in the high-pressure gas storage tank drops from the first rated working gas pressure to the second rated working gas pressure of the high-pressure expander, at which point the release of the high-pressure gas stops. The sub-high pressure gas is released from the sub-high pressure gas storage tank and enters the sub-high pressure expander to do work until the gas pressure in the sub-high pressure gas storage tank is reduced from the second rated working gas pressure to atmospheric pressure.

6. A compressed air energy storage intake regulating device, characterized in that, The device includes: The power generation preparation module is used to release high-pressure gas from the high-pressure gas storage tank into the sub-high-pressure gas storage tank in response to a power generation command for the compressed air energy storage system, until the gas pressure in the high-pressure gas storage tank is reduced to the first rated working gas pressure of the high-pressure expander. The primary power generation module is used to release the high-pressure gas from the high-pressure gas storage tank into the high-pressure expander to do work until the gas pressure in the high-pressure gas storage tank drops from the first rated working gas pressure to the second rated working gas pressure of the secondary high-pressure expander, at which point the release of the high-pressure gas stops. The secondary power generation module is used to release sub-high pressure gas from the sub-high pressure gas storage tank into the sub-high pressure expander to do work until the gas pressure in the sub-high pressure gas storage tank is reduced from the second rated working gas pressure to atmospheric pressure.

7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method of claim 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the method of claim 5.

9. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the method of claim 5.

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