Array heat exchanger temperature and flow cooperative control method, device and equipment

Abstract

The invention relates to the technical field of heat exchangers, in particular to a temperature and flow cooperative control method, device and equipment for an array heat exchanger, and the method comprises the steps: obtaining a given power instruction of the array heat exchanger; determining a sensitivity coefficient curve of at least one target control quantity under the power instruction; fitting the sensitivity coefficient curve of each target control quantity to determine the ratio of the inlet air temperature to the inlet air mass flow rate of the array heat exchanger; and cooperative control over the temperature and the flow is conducted on the array type heat exchanger according to the proportion. Therefore, the problems of poor heat exchanger control effect, low heat exchange efficiency, insufficient flexibility and the like in related technologies are solved.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchangers, and in particular to a method, device and equipment for coordinated control of temperature and flow of an array heat exchanger. Background Art

[0002] As a type of compressed air energy storage system, advanced adiabatic compressed air energy storage has attracted widespread attention in the context of dual carbon because of its zero-carbon emission characteristics. It is mainly divided into the compression side and the turbine side. The compression side is mainly composed of a compressor and a heat exchanger, and the turbine side is mainly composed of a turbine and a heat exchanger. As the core component connecting the entire system, the performance of the heat exchanger directly affects the efficiency of the system. In theory, the cycle efficiency of the system can exceed 70%, but in reality, due to various unpredictable factors, the current system efficiency has not yet reached this standard.

[0003] The main function of a heat exchanger is to exchange heat between hot and cold fluids. During this process, a large amount of heat will be lost, which makes the overall efficiency of the system low. In order to improve the efficiency of the system, it is very important to conduct in-depth research and optimization of the heat exchanger. At present, the shell and tube countercurrent heat exchanger is the mainstream choice, and its high temperature and high pressure resistance ensures the stable operation of the system. However, its heat exchange efficiency still needs to be improved to meet the needs of improving system performance. Summary of the invention

[0004] The present application provides a method, device and equipment for coordinated control of temperature and flow of an array heat exchanger to solve the problems of poor heat exchanger control effect, low heat exchange efficiency and insufficient flexibility in related technologies.

[0005] A first aspect embodiment of the present application provides a method for coordinated control of temperature and flow of an array heat exchanger, comprising the following steps: obtaining a given power instruction of the array heat exchanger; determining a sensitivity coefficient curve of at least one target control quantity under the power instruction; fitting the sensitivity coefficient curve of each target control quantity to determine the ratio of the inlet air temperature to the inlet air mass flow rate of the array heat exchanger; and coordinated control of the temperature and flow of the array heat exchanger according to the ratio.

[0006] Optionally, determining the sensitivity coefficient curve of at least one target control quantity under the power instruction includes: obtaining a correspondence table between power instructions and sensitivity coefficient curves; and determining the sensitivity coefficient curve of at least one target control quantity under the power instruction based on the correspondence table.

[0007] Optionally, the at least one target controlled variable includes at least one of a hot fluid temperature, a cold fluid temperature, a hot fluid linear density and a cold fluid linear density.

[0008] Optionally, before obtaining the correspondence table between the power command and the sensitivity coefficient curve, the method includes: obtaining the physical characteristic equation of the heat exchanger in the array heat exchanger; establishing a group of physical characteristic equations of the array heat exchanger according to the physical characteristic equation of the heat exchanger; performing a sensitivity analysis on the at least one target control quantity under multiple power commands, and generating a sensitivity coefficient curve according to the sensitivity analysis data, wherein the ratio of the inlet air temperature to the inlet air mass flow rate is determined before the sensitivity analysis; and generating a correspondence table according to the multiple power commands and the sensitivity coefficient curve of at least one target control quantity under each power command.

[0009] Optionally, the physical property equation is:

[0010]

[0011] Among them, T h is the temperature of the hot fluid, T c is the temperature of the cold fluid, m h is the thermal fluid linear density, m c is the linear density of the cold fluid, c ph is the specific heat capacity of the hot fluid at constant pressure, c pc is the specific heat capacity of the cold fluid at constant pressure, is the mass flow rate of the thermal fluid, is the mass flow rate of the cold fluid, U is the heat transfer coefficient, and A is the heat transfer area.

[0012] Optionally, before the temperature and flow of the array heat exchanger are coordinated controlled according to the proportion, it also includes: obtaining the initial equivalent power of the array heat exchanger; calculating the power difference between the given power corresponding to the given power instruction and the initial equivalent power; if the power difference is greater than a preset value, the temperature and flow of the array heat exchanger are coordinated controlled according to the proportion.

[0013] A second aspect of the present application provides a device for coordinated control of temperature and flow of an array heat exchanger, comprising: an acquisition module for acquiring a given power instruction of the array heat exchanger; a determination module for determining a sensitivity coefficient curve of at least one target control quantity under the power instruction; a fitting module for fitting the sensitivity coefficient curve of each target control quantity to determine the ratio of the inlet air temperature to the inlet air mass flow rate of the array heat exchanger; and a control module for coordinated control of the temperature and flow of the array heat exchanger according to the ratio.

[0014] The third aspect of the present application provides a control device for a compressed air energy storage system, comprising: 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 array heat exchanger temperature and flow coordinated control method as described above.

[0015] 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 implement the array heat exchanger temperature and flow coordinated control method as described above.

[0016] The fifth aspect of the present application provides a computer program product, including a computer program or instructions, which, when executed, are used to implement the method for coordinated control of temperature and flow of an array heat exchanger as described above.

[0017] Therefore, this application has at least the following beneficial effects:

[0018] The embodiment of the present application constructs the physical characteristic equation of the array heat exchanger, and performs sensitivity analysis on temperature control and flow control under specific working conditions to optimize the weight ratio of the two control methods. Among them, temperature control relies on a zero-carbon external heat source to accurately regulate the inlet air temperature of the heat exchanger, while flow control controls the mass flow rate of air flowing into the heat exchanger by adjusting the opening of the throttle valve in front of the heat exchanger. Under any given power instruction, precise control of the heat exchanger is achieved according to the results of the sensitivity analysis, which not only significantly improves the speed of power tracking, but also effectively reduces the energy loss caused by parameter adjustment. As a result, technical problems such as poor heat exchanger control effect, low heat exchange efficiency and lack of flexibility in related technologies are solved.

[0019] 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 the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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:

[0021] Figure 1 It is a flow chart of a method for coordinated control of temperature and flow rate of an array heat exchanger provided according to an embodiment of the present application;

[0022] Figure 2 A schematic diagram of a method for coordinated control of temperature and flow rate of an array heat exchanger provided according to an embodiment of the present application;

[0023] Figure 3 A flow chart of a method for coordinated control of temperature and flow of an array heat exchanger provided according to an embodiment of the present application;

[0024] Figure 4 An example diagram of a temperature and flow coordinated control device for an array heat exchanger is provided according to an embodiment of the present application;

[0025] Figure 5Schematic diagram of the structure of a control device for a compressed air energy storage system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] Embodiments of the present application are described in detail below, and 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.

[0027] The following describes the array heat exchanger temperature and flow coordinated control method, device and equipment of the embodiment of the present application with reference to the accompanying drawings. In view of the problem that the low heat exchange efficiency mentioned in the above background technology restricts the efficiency improvement of the energy storage system, the present application provides an array heat exchanger temperature and flow coordinated control method, in which the physical characteristic equation of the array heat exchanger is constructed, and the temperature control and flow control are subjected to sensitivity analysis under specific working conditions to optimize the weight ratio of the two control methods. Among them, the temperature control relies on the zero-carbon external heat source to accurately control the heat exchanger inlet air temperature, while the flow control controls the air mass flow rate flowing into the heat exchanger by adjusting the opening of the throttle valve in front of the heat exchanger. Under any given power instruction, the precise control of the heat exchanger is achieved according to the sensitivity analysis results, which not only significantly improves the speed of power tracking, but also effectively reduces the energy loss caused by parameter adjustment. As a result, the problems of poor heat exchanger control effect, low heat exchange efficiency and insufficient flexibility in the related technology are solved.

[0028] Specifically, Figure 1 A flow chart of a method for coordinated control of temperature and flow rate of an array heat exchanger provided in an embodiment of the present application.

[0029] like Figure 1 As shown, the array heat exchanger temperature and flow coordinated control method includes the following steps:

[0030] In step S101, a given power instruction of the array heat exchanger is obtained.

[0031] The given power instruction may be a desired heat exchange efficiency or heat output.

[0032] It can be understood that the embodiment of the present application can obtain a given power instruction of the array heat exchanger, providing a clear control target for subsequent sensitivity analysis, control quantity ratio determination, and coordinated control of temperature and flow.

[0033] In step S102, a sensitivity coefficient curve of at least one target controlled variable under a power command is determined.

[0034] The at least one target control variable may include at least one of a hot fluid temperature, a cold fluid temperature, a hot fluid linear density, and a cold fluid linear density.

[0035] It can be understood that the embodiment of the present application can clarify the degree of influence of each control variable on the performance by determining the sensitivity coefficient curve of at least one target control quantity under the power command, and then optimize the control strategy, improve the heat exchange efficiency and power tracking speed of the array heat exchanger, while reducing energy loss and enhancing adaptability and flexibility under different working conditions.

[0036] In an embodiment of the present application, determining a sensitivity coefficient curve of at least one target control quantity under a power instruction includes: obtaining a correspondence table between power instructions and sensitivity coefficient curves; and determining a sensitivity coefficient curve of at least one target control quantity under the power instruction based on the correspondence table.

[0037] The correspondence table may include the correspondence between different power instructions and corresponding sensitivity coefficients, wherein each row may represent a specific power instruction, and each column may represent a sensitivity coefficient of a target control quantity.

[0038] It is understandable that the embodiment of the present application can quickly locate and determine the sensitivity coefficient curve of at least one target control quantity under a specific power instruction by obtaining a correspondence table between power instructions and sensitivity coefficient curves. This correspondence table can provide a convenient way to understand the impact of control variables on system performance under different power requirements, and thus provide an important basis for optimizing control strategies and improving system performance. Through sensitivity coefficient curve analysis based on the correspondence table, precise control of the array heat exchanger can be achieved to meet the requirements of efficient heat exchange under different power instructions.

[0039] In an embodiment of the present application, before obtaining a correspondence table between power instructions and sensitivity coefficient curves, the method includes: obtaining a physical characteristic equation of a heat exchanger in an array heat exchanger; establishing a group of physical characteristic equations of the array heat exchanger according to the physical characteristic equation of the heat exchanger; performing a sensitivity analysis on at least one target control quantity under multiple power instructions, and generating a sensitivity coefficient curve according to the sensitivity analysis data, wherein the ratio of the inlet air temperature to the inlet air mass flow rate is determined before the sensitivity analysis; and generating a correspondence table according to multiple power instructions and the sensitivity coefficient curve of at least one target control quantity under each power instruction.

[0040] Among them, sensitivity analysis can be used to evaluate the sensitivity of the performance of the array heat exchanger to changes in different control quantities.

[0041] It is understandable that the embodiment of the present application obtains the physical characteristic equation of the array heat exchanger and establishes its equation group, and then performs sensitivity analysis on the key target control quantity under multiple power instructions to generate a sensitivity coefficient curve. Before the sensitivity analysis, the ratio of the inlet air temperature to the air mass flow rate is predetermined to optimize the control strategy. Finally, based on the analysis results, a corresponding relationship table between the power instruction and the target control quantity sensitivity coefficient is generated, which provides effective data support and control strategy guidance for improving the system heat exchange efficiency and performance optimization.

[0042] In the embodiment of the present application, the physical property equation is:

[0043]

[0044] Among them, T h is the temperature of the hot fluid, T c is the temperature of the cold fluid, m h is the thermal fluid linear density, m c is the linear density of the cold fluid, c ph is the specific heat capacity of the hot fluid at constant pressure, c pc is the specific heat capacity of the cold fluid at constant pressure, is the mass flow rate of the thermal fluid, is the mass flow rate of the cold fluid, U is the heat transfer coefficient, and A is the heat transfer area.

[0045] Specifically, for a countercurrent heat exchanger, its monomer heat transfer equation is as follows:

[0046]

[0047] Among them, T h is the temperature of the hot fluid, T c is the temperature of the cold fluid, m h is the thermal fluid linear density, m c is the linear density of the cold fluid, c ph is the specific heat capacity of the hot fluid at constant pressure, c pc is the specific heat capacity of the cold fluid at constant pressure, is the mass flow rate of the thermal fluid, is the mass flow rate of the cold fluid, U is the heat transfer coefficient, and A is the heat transfer area.

[0048] For array heat exchangers, the physical characteristic equations of all heat exchangers are as shown in the above formula. The only difference is that the fluids connected to the two heat exchangers need to satisfy the outlet temperature and mass flow rate of the fluid of one heat exchanger equal to the inlet temperature and mass flow rate of the fluid of the other heat exchanger. Therefore, the physical characteristic equation group of the array heat exchanger can be established through the above formula.

[0049] After establishing the equations, start controlling the quantity T h 、Tc , Conduct sensitivity analysis. First, specify the working condition of an array heat exchanger, then fix three control quantities, change the fourth control quantity from the lower limit to the upper limit, and observe the change of the equivalent output power of the heat exchanger. Perform the above analysis on the four control quantities in turn, and finally obtain the influence rate of the four control quantities on the equivalent power under the specified power, where the sensitivity coefficients under the working condition are allocated to the four control quantities according to the proportion of the influence rate.

[0050] Then, the above experiment is repeated with the changed working conditions until all working conditions have been simulated. At this point, the sensitivity coefficient of each control variable under different working conditions can be obtained, and the sensitivity coefficient curve of each control variable under different power commands can be fitted through the scattered point information obtained above.

[0051] In step S103, the sensitivity coefficient curve of each target control variable is fitted to determine the ratio of the inlet air temperature to the inlet air mass flow rate of the array heat exchanger.

[0052] It is understandable that the embodiment of the present application effectively determines the optimal ratio of the inlet air temperature and the inlet air mass flow rate of the array heat exchanger by fitting the sensitivity coefficient curve of each target control quantity. By quantitatively analyzing the influence of different control quantities on system performance, a scientific basis is provided for optimizing the control strategy. By accurately controlling the ratio of the inlet air temperature and the air mass flow rate, the heat exchange efficiency of the array heat exchanger can be significantly improved, ensuring that the system can achieve optimal performance under different working conditions.

[0053] In step S104, the temperature and flow rate of the array heat exchanger are coordinated controlled according to the proportion.

[0054] It can be understood that the embodiment of the present application determines the optimal temperature and flow ratio of the array heat exchanger by fitting the sensitivity coefficient curve, realizes the coordinated control of temperature and flow, optimizes the heat exchange efficiency, and contributes to energy conservation and emission reduction.

[0055] In an embodiment of the present application, before the temperature and flow of the array heat exchanger are coordinated controlled according to the proportion, it also includes: obtaining the initial equivalent power of the array heat exchanger; calculating the power difference between the given power corresponding to the given power instruction and the initial equivalent power; if the power difference is greater than the preset value, the temperature and flow of the array heat exchanger are coordinated controlled according to the proportion.

[0056] The initial equivalent power may be the heat exchange power that can be achieved under the initial setting conditions, and the preset value may be a pre-set threshold.

[0057] It is understandable that the embodiment of the present application achieves an accurate assessment of the system power demand by obtaining the initial equivalent power of the array heat exchanger and calculating the power difference between the given power instruction and the initial equivalent power. When the power difference exceeds the preset value, the coordinated control strategy of temperature and flow can be automatically triggered to ensure that the array heat exchanger can respond to the power change demand quickly and accurately, improve the response speed and accuracy, and ensure that the equipment can operate stably under different working conditions and achieve the best heat exchange efficiency.

[0058] Specifically, Figure 2 As shown, firstly, a power instruction is given, and the heat exchanger outputs an initial equivalent power under a given initial value and compares it with , and the comparison data is transmitted to the stability control system, which mainly defines the approximate control range of the four control quantities and selects a possible value of the sensitivity coefficient curve within the range. Then, the values ​​of the four control quantities corresponding to the sensitivity coefficient curve are input into the special control system, in which a diversified design can be made according to the desired purpose. Among them, if the heat exchange efficiency of the system is to be improved, the optimal control algorithm can be used, and the energy loss of the heat exchanger is used as the objective function of the optimal control algorithm and the corresponding calculation is performed to obtain the control quantity that should be input and fed back to the array heat exchanger system to achieve closed-loop control.

[0059] According to the method for coordinated control of temperature and flow of an array heat exchanger proposed in the embodiment of the present application, the physical characteristic equation of the array heat exchanger is constructed, and sensitivity analysis of temperature control and flow control is performed under specific working conditions to optimize the weight ratio of the two control methods. Among them, temperature control relies on a zero-carbon external heat source to accurately regulate the inlet air temperature of the heat exchanger, while flow control controls the mass flow rate of air flowing into the heat exchanger by adjusting the opening of the throttle valve in front of the heat exchanger. Under any given power instruction, precise control of the heat exchanger is achieved according to the results of the sensitivity analysis, which not only significantly improves the speed of power tracking, but also effectively reduces the energy loss caused by parameter adjustment. As a result, the problems of poor heat exchanger control effect, low heat exchange efficiency and lack of flexibility in the related technology are solved.

[0060] The following will be combined Figure 3 The temperature and flow coordinated control method of the array heat exchanger is specifically described as follows:

[0061] Step 1: Establish the physical characteristic equation of the array heat exchanger;

[0062] Step 2: Conduct sensitivity analysis on the temperature control and flow control of the heat exchanger under all operating conditions;

[0063] Step 3: Determine the ratio of the heat exchanger temperature control and flow control feedback input under each operating condition through curve fitting;

[0064] Step 4: Establishing array heat exchanger feedback control system;

[0065] Step 5: Control the inlet air temperature and the inlet air mass flow rate of the heat exchanger system under any command.

[0066] In summary, the embodiments of the present application perform sensitivity analysis on the only two control parameters of the heat exchanger, namely the inlet air temperature and the inlet air mass flow rate, under all operating conditions, and determine the proportion of the two parameters under various operating conditions that may be encountered before control, so that not too much time is spent on parameter calculation during control, but the system starts to quickly adjust its own parameters after receiving the power instruction; by controlling the two variables at the same time, the heat exchanger can quickly reach the parameters required under the power instruction, and some special control methods can be used to achieve rapid tracking of instructions while reducing energy losses.

[0067] Next, the temperature and flow coordinated control device of the array heat exchanger proposed in accordance with the embodiment of the present application will be described with reference to the accompanying drawings.

[0068] Figure 4 It is a block diagram of a temperature and flow coordinated control device for an array heat exchanger according to an embodiment of the present application.

[0069] like Figure 4 As shown, the array heat exchanger temperature and flow coordinated control device 10 includes: an acquisition module 100, a determination module 200, a fitting module 300 and a control module 400.

[0070] Among them, the acquisition module 100 is used to obtain a given power instruction of the array heat exchanger; the determination module 200 is used to determine the sensitivity coefficient curve of at least one target control quantity under the power instruction; the fitting module 300 is used to fit the sensitivity coefficient curve of each target control quantity to determine the ratio of the inlet air temperature and the inlet air mass flow rate of the array heat exchanger; the control module 400 is used to coordinate the temperature and flow of the array heat exchanger according to the ratio.

[0071] It should be noted that the aforementioned explanation of the embodiment of the array heat exchanger temperature and flow coordinated control method is also applicable to the array heat exchanger temperature and flow coordinated control device of this embodiment, and will not be repeated here.

[0072] According to the array heat exchanger temperature and flow coordinated control device proposed in the embodiment of the present application, the physical characteristic equation of the array heat exchanger is constructed, and the sensitivity analysis of temperature control and flow control is performed under specific working conditions to optimize the weight ratio of the two control methods. Among them, temperature control relies on a zero-carbon external heat source to accurately regulate the inlet air temperature of the heat exchanger, while flow control controls the mass flow rate of air flowing into the heat exchanger by adjusting the opening of the throttle valve in front of the heat exchanger. Under any given power instruction, precise control of the heat exchanger is achieved according to the results of the sensitivity analysis, which not only significantly improves the speed of power tracking, but also effectively reduces the energy loss caused by parameter adjustment. As a result, the problems of poor heat exchanger control effect, low heat exchange efficiency and lack of flexibility in the related technology are solved.

[0073] Figure 5 A schematic diagram of the structure of a control device for a compressed air energy storage system provided in an embodiment of the present application. The control device for the compressed air energy storage system may include:

[0074] A memory 501 , a processor 502 , and a computer program stored in the memory 501 and executable on the processor 502 .

[0075] When the processor 502 executes the program, the array heat exchanger temperature and flow coordinated control method provided in the above embodiment is implemented.

[0076] Furthermore, the control device of the compressed air energy storage system also includes:

[0077] The communication interface 503 is used for communication between the memory 501 and the processor 502 .

[0078] The memory 501 is used to store computer programs that can be executed on the processor 502 .

[0079] The memory 501 may include a high-speed RAM (Random Access Memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

[0080] If the memory 501, the processor 502 and the communication interface 503 are implemented independently, the communication interface 503, the memory 501 and the processor 502 can be connected to each other through a bus and communicate with each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0081] Optionally, in a specific implementation, if the memory 501, the processor 502 and the communication interface 503 are integrated on a chip, the memory 501, the processor 502 and the communication interface 503 can communicate with each other through an internal interface.

[0082] The processor 502 may be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0083] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned method for coordinated control of temperature and flow of an array heat exchanger.

[0084] 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 method for coordinated control of temperature and flow of an array heat exchanger.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0086] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0087] 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 more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0088] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0089] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

Claims

1. A method for coordinated control of temperature and flow rate of an array heat exchanger, characterized in that: The following steps are involved: Obtaining a given power instruction of the array heat exchanger; Determining a sensitivity coefficient curve of at least one target control variable under the power command; Fitting a sensitivity coefficient curve of each target control amount to determine a ratio of an inlet air temperature to an inlet air mass flow rate of the array heat exchanger; The temperature and flow rate of the array heat exchanger are coordinated and controlled according to the proportion.

2. The method for coordinated control of temperature and flow rate of an array heat exchanger according to claim 1, characterized in that: The determining of a sensitivity coefficient curve of at least one target control variable under the power command includes: Obtaining a corresponding relationship table between power instructions and sensitivity coefficient curves; A sensitivity coefficient curve of at least one target control variable under the power command is determined based on the corresponding relationship table.

3. The method for coordinated control of temperature and flow rate of an array heat exchanger according to claim 1 or 2, characterized in that: The at least one target controlled variable includes at least one of a hot fluid temperature, a cold fluid temperature, a hot fluid linear density, and a cold fluid linear density.

4. The method for coordinated control of temperature and flow rate of an array heat exchanger according to claim 2, characterized in that: Before obtaining the corresponding relationship table between the power command and the sensitivity coefficient curve, it includes: Obtaining a physical characteristic equation of a heat exchanger in the array heat exchanger; Establishing a group of physical characteristic equations of the array heat exchanger according to the physical characteristic equations of the heat exchanger; Performing a sensitivity analysis on the at least one target control variable under a plurality of power commands, and generating a sensitivity coefficient curve according to the sensitivity analysis data, wherein a ratio of the inlet air temperature to the inlet air mass flow rate is determined before the sensitivity analysis; A corresponding relationship table is generated according to the multiple power instructions and a sensitivity coefficient curve of at least one target control amount under each power instruction.

5. The method for coordinated control of temperature and flow rate of an array heat exchanger according to claim 4, characterized in that: The physical property equation is: Among them, T h is the temperature of the hot fluid, T c is the temperature of the cold fluid, m h is the thermal fluid linear density, m c is the linear density of the cold fluid, c ph is the specific heat capacity of the hot fluid at constant pressure, c pc is the constant pressure specific heat capacity of the cold fluid, is the mass flow rate of the thermal fluid, is the mass flow rate of the cold fluid, U is the heat transfer coefficient, and A is the heat transfer area.

6. The method for coordinated control of temperature and flow rate of an array heat exchanger according to claim 1, characterized in that: Before the array heat exchanger is controlled in a coordinated manner with respect to the temperature and flow rate according to the proportion, the method further includes: Obtaining the initial equivalent power of the array heat exchanger; Calculating a power difference between a given power corresponding to the given power instruction and the initial equivalent power; If the power difference is greater than a preset value, the temperature and flow of the array heat exchanger are coordinated controlled according to the proportion.

7. A temperature and flow coordinated control device for an array heat exchanger, characterized in that: include: An acquisition module, used for acquiring a given power instruction of the array heat exchanger; A determination module, used to determine a sensitivity coefficient curve of at least one target control quantity under the power command; A fitting module, used for fitting a sensitivity coefficient curve of each target control amount to determine a ratio of an inlet air temperature to an inlet air mass flow rate of the array heat exchanger; A control module is used to coordinately control the temperature and flow of the array heat exchanger according to the proportion.

8. A control device for a compressed air energy storage system, 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 method for coordinated control of temperature and flow of an array heat exchanger as described in 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 method for coordinated control of temperature and flow of an array heat exchanger as described in any one of claims 1 to 6.

10. A computer program product comprising a computer program or instructions, characterized in that When the computer program or instruction is executed, the array heat exchanger temperature and flow coordinated control method as described in any one of claims 1-6 is implemented.

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