Heat exchanger operation control method and system for compressed air energy storage

Abstract

This invention provides a method and system for controlling the operation of a heat exchanger in a compressed air energy storage device, relating to the field of energy storage device technology. The method includes: acquiring a compressed air energy storage device, comprising an intelligent control unit, an energy storage unit, and a power generation unit, wherein the energy storage unit and the power generation unit are connected via a heat exchanger, and heat exchange tubes are arranged inside the heat exchanger; setting the device to a first state; monitoring the temperature inside the heat exchange tubes through a temperature monitoring module to obtain temperature monitoring data; generating a first control command when any of the multiple temperature values ​​is lower than a warning value for the temperature inside the tubes; and increasing the water flow rate in the heat exchange tubes via a water flow control valve in the heat exchanger. This invention solves the technical problem that traditional heat exchanger control methods lack effective temperature monitoring and data processing means, leading to difficulty in timely detection and handling of temperature anomalies, resulting in poor operating efficiency and stability of the compressed air energy storage device.

Description

Technical Field

[0001] This invention relates to the field of energy storage device technology, and more specifically to a heat exchanger operation control method and system for compressed air energy storage devices. Background Technology

[0002] Compressed air energy storage refers to an energy storage method that uses electrical energy to compress air during periods of low grid load, sealing the air at high pressure, and then releasing the compressed air to drive a steam turbine to generate electricity during periods of high grid load. The heat exchanger is a crucial component of the compressed air energy storage system, responsible for transferring the heat energy generated during the storage phase to the release phase. Due to changes in the operating environment, improper system design, or equipment aging, abnormal temperatures may occur inside the heat exchanger. For example, excessively low temperatures can lead to water freezing, pipe blockages, and other problems, severely impacting the operational stability and efficiency of the equipment. Traditional heat exchanger control methods lack effective temperature monitoring and data processing capabilities, making it difficult to detect and address temperature anomalies in a timely manner, resulting in poor operational efficiency and stability of the compressed air energy storage device. Summary of the Invention

[0003] This application provides a heat exchanger operation control method for compressed air energy storage devices, aiming to solve the technical problem that traditional heat exchanger control methods lack effective temperature monitoring and data processing means, making it difficult to detect and handle temperature anomalies in a timely manner, resulting in poor operating efficiency and stability of compressed air energy storage devices.

[0004] In view of the above problems, this application provides a method and system for controlling the operation of a heat exchanger in a compressed air energy storage device.

[0005] The first aspect disclosed in this application provides a method for controlling the operation of a heat exchanger in a compressed air energy storage device. The method includes: acquiring a compressed air energy storage device, the compressed air energy storage device comprising an intelligent control unit, an energy storage unit, and a power generation unit, wherein the energy storage unit and the power generation unit are connected via a heat exchanger, and heat exchange tubes are arranged inside the heat exchanger; setting the compressed air energy storage device to a first state via the intelligent control unit, wherein the first state involves releasing compressed air from the energy storage unit to the power generation unit; setting a temperature monitoring module, wherein in the first state, the temperature monitoring module monitors the temperature inside the heat exchange tubes to obtain temperature monitoring data, wherein the temperature monitoring data includes multiple temperature values ​​from multiple temperature monitoring points; obtaining a tube temperature warning value, wherein when any of the multiple temperature values ​​is lower than the tube temperature warning value, a first control command is generated; and based on the first control command, the water flow rate of the heat exchange tubes is increased by a water flow control valve of the heat exchanger.

[0006] The second aspect of this application discloses a heat exchanger operation control system for a compressed air energy storage device. The system is used in the aforementioned heat exchanger operation control method for a compressed air energy storage device. The system includes: an energy storage device acquisition module for acquiring a compressed air energy storage device, the compressed air energy storage device including an intelligent control unit, an energy storage unit, and a power generation unit, wherein the energy storage unit and the power generation unit are connected via a heat exchanger, and the heat exchanger contains heat exchange tubes; and a first state setting module for setting the compressed air energy storage device to a first state via the intelligent control unit, wherein the first state is a state where the compressed air energy storage device is in use. The unit releases compressed air into the power generation unit; an internal temperature monitoring module is used to set up a temperature monitoring module, which monitors the temperature inside the heat exchange tube in the first state to obtain temperature monitoring data, wherein the temperature monitoring data includes multiple temperature values ​​from multiple temperature monitoring points; a control command generation module is used to obtain a tube temperature warning value, and generates a first control command when any of the multiple temperature values ​​is lower than the tube temperature warning value; a water flow control module is used to increase the water flow of the heat exchange tube by the water flow control valve of the heat exchanger based on the first control command.

[0007] A third aspect of this application discloses a computer device including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement any step of the first aspect of this application.

[0008] A fourth aspect of this application discloses a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any step of the first aspect of this application.

[0009] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0010] By setting up a temperature monitoring module and obtaining temperature monitoring data inside the tubes, the temperature changes inside the heat exchange tubes can be monitored in real time, and anomalies can be detected in a timely manner. When the monitored temperature value is lower than the preset tube temperature warning value, a first control command is generated to provide an early warning and prevent problems caused by excessively low temperatures. According to the first control command, the intelligent control unit controls the water flow control valve of the heat exchanger to increase the water flow in the heat exchange tubes. This effectively regulates the heat exchange rate inside the heat exchanger to maintain the temperature inside the tubes within a safe range, preventing equipment failure or performance degradation due to abnormal temperatures, thereby ensuring the safe and stable operation of the entire compressed air energy storage device. In summary, this heat exchanger operation control method for compressed air energy storage devices, by establishing a temperature monitoring and early warning mechanism and realizing intelligent control of the water flow in the heat exchanger, effectively solves the problem of abnormal heat exchanger temperature in compressed air energy storage devices, ensuring the safe and stable operation of the equipment.

[0011] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0012] Figure 1 A schematic flowchart of a heat exchanger operation control method for a compressed air energy storage device provided in an embodiment of this application;

[0013] Figure 2 A schematic diagram of the heat exchanger operation control system for a compressed air energy storage device provided in this application embodiment;

[0014] Figure 3 This is an internal structural diagram of a computer device provided in an embodiment of this application.

[0015] Explanation of reference numerals in the attached drawings: Energy storage device acquisition module 10, first state setting module 20, internal temperature monitoring module 30, control command generation module 40, and water flow control module 50. Detailed Implementation

[0016] This application provides a heat exchanger operation control method for compressed air energy storage devices, which solves the technical problem that traditional heat exchanger control methods lack effective temperature monitoring and data processing methods, making it difficult to detect and handle temperature anomalies in a timely manner, resulting in poor operating efficiency and stability of compressed air energy storage devices.

[0017] After introducing the basic principles of this application, various non-limiting embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0018] like Figure 1 As shown in the embodiment of this application, a heat exchanger operation control method for a compressed air energy storage device is provided, the method comprising:

[0019] A compressed air energy storage device is obtained, the compressed air energy storage device includes an intelligent control unit, an energy storage unit, and a power generation unit, wherein the energy storage unit and the power generation unit are connected through a heat exchanger, and the heat exchanger is provided with heat exchange tubes.

[0020] The intelligent control unit is the component that controls and manages the entire compressed air energy storage device. It regulates the energy storage and power generation processes through software algorithms or hardware control. The energy storage unit is the component used to store energy, specifically compressed air. This unit can convert externally input energy into compressed air and store it for later use. The power generation unit is the component that uses the stored compressed air energy to generate electricity. It can release the compressed air and convert mechanical energy into electrical energy through a generator. The heat exchanger is the component that connects the energy storage unit and the power generation unit. Its function is to transfer the released heat energy to another fluid, usually water, when the compressed air is released, in order to realize the energy conversion and utilization. Heat exchange tubes are arranged inside the heat exchanger, and heat energy is transferred through these tubes.

[0021] The intelligent control unit sets the compressed air energy storage device to a first state, wherein the first state is to release compressed air from the energy storage unit to the power generation unit;

[0022] The intelligent control unit sets the compressed air energy storage device to a first state, which is the state of releasing compressed air from the energy storage unit to the power generation unit. In short, this means that the intelligent control unit, through corresponding operations, causes the energy storage unit to start releasing compressed air and guides this compressed air to the power generation unit so as to use this air to generate electricity.

[0023] A temperature monitoring module is set up. In the first state, the temperature inside the heat exchange tube is monitored through the temperature monitoring module to obtain temperature monitoring data. The temperature monitoring data includes multiple temperature values ​​from multiple temperature monitoring points.

[0024] A device for monitoring temperature is installed inside the heat exchange tube to monitor the internal temperature of the energy storage device in real time during operation. In the first state, the temperature is monitored at multiple locations on the heat exchange tube, with each location corresponding to a temperature value, thus obtaining multiple temperature values ​​from multiple temperature monitoring points to gain a more comprehensive understanding of the temperature distribution inside the heat exchange tube.

[0025] Obtain a pipe temperature warning value; when any of the plurality of temperature values ​​is lower than the pipe temperature warning value, generate a first control command.

[0026] A pre-warning value for the internal temperature of the heat exchanger tubes is established to indicate the safe range of temperature inside the tubes. This pre-warning value can be determined based on factors such as design requirements, equipment specifications, or operational experience. When any of the monitored temperature values ​​falls below the set pre-warning value, it indicates a possible abnormal or excessively low temperature inside the heat exchanger tubes. In this case, a first control command is generated to adjust the operation of the heat exchanger to ensure that the internal temperature remains within the safe range.

[0027] Based on the first control command, the water flow rate of the heat exchanger tube is increased by the water flow control valve of the heat exchanger.

[0028] According to the first control command generated, the water flow rate is increased by adjusting the water flow control valve on the heat exchanger. This increases the flow velocity of the water in the heat exchanger, thereby improving the heat exchange efficiency between the water and compressed air in the tube, and thus regulating the temperature in the tube to ensure that it is within the safe operating range.

[0029] Furthermore, the internal fluid of the heat exchange tube is circulating water, and the external fluid of the heat exchange tube is compressed air.

[0030] Inside the heat exchange tubes flows circulating water, which typically serves as the medium in the heat exchanger. During the heat exchange process, the circulating water absorbs or releases heat and then circulates through the pipes to maintain the thermal balance in the system. Outside the heat exchange tubes flows compressed air, which is part of the compressed air release process in the compressed air energy storage device. When the compressed air passes through the heat exchanger and is outside the heat exchange tubes, it exchanges heat with the circulating water inside the heat exchange tubes.

[0031] Furthermore, it also includes:

[0032] A pressure monitoring module is set up so that, in the first state, the pressure outside the heat exchange tube is monitored through the pressure monitoring module to obtain pressure monitoring data;

[0033] The pressure monitoring data is input into the pressure-temperature prediction model to predict the temperature and obtain the predicted temperature data.

[0034] Obtain an external temperature warning value; when the predicted temperature data is lower than the external temperature warning value, generate a second control command.

[0035] Based on the second control command, the water flow rate of the heat exchanger is increased by the water flow control valve of the heat exchanger.

[0036] A module for monitoring the external pressure of the heat exchange tubes is installed in the compressed air energy storage device to monitor the pressure changes outside the heat exchange tubes in real time. The pressure monitoring module obtains the pressure information outside the heat exchange tubes by sensing and forms pressure monitoring data.

[0037] The obtained pressure monitoring data is input into a pre-established pressure-temperature prediction model for temperature prediction. This model, built based on big data, is used to predict temperature changes outside the heat exchanger tubes based on pressure variations. The pressure-temperature prediction model analyzes the input pressure monitoring data to derive the predicted temperature data, i.e., the temperature outside the heat exchanger tubes.

[0038] Based on the system design and operation requirements, an external temperature warning value is set. This value represents the lowest allowable external temperature during system operation. This value is determined based on the system's safety, the equipment's tolerance, and other factors, and is usually higher than the freezing point temperature.

[0039] Based on the predicted temperature data, it is determined whether it is lower than the set external temperature warning value. If the predicted temperature data is lower than this warning value, a second control command is generated. According to the generated second control command, the control valve of the heat exchange tube water flow is adjusted accordingly to increase the water flow. The purpose of this is to increase the water flow, thereby accelerating the heat transfer speed, so as to prevent the external temperature of the heat exchange tube from being too low and maintain the stable operation of the system.

[0040] Furthermore, constructing the pressure-temperature prediction model includes:

[0041] Based on the heat exchanger operation data records, a sample pressure monitoring data set and a sample temperature monitoring data set are obtained, wherein the sample pressure monitoring data set and the sample temperature monitoring data set have a mapping relationship;

[0042] Based on the mapping relationship, a constructed dataset is obtained, wherein the constructed dataset includes a training set and a test set with a preset ratio;

[0043] Based on neural networks, the network structure of the pressure-temperature prediction model is constructed.

[0044] The pressure-temperature prediction model is trained using the training set, evaluated using the test set, and then fine-tuned based on the evaluation results until preset conditions are met, thus obtaining the pressure-temperature prediction model.

[0045] By retrieving historical pressure and temperature data from operation logs and other sources during heat exchanger operation, sample data is collected based on actual operating conditions to obtain sample pressure monitoring datasets and sample temperature monitoring datasets. The sample pressure monitoring dataset includes multiple pressure values, and the sample temperature monitoring dataset includes multiple temperature values. A mapping relationship exists between the pressure and temperature of each sample, allowing for the matching of a specific pressure value with its corresponding temperature value.

[0046] Based on this mapping relationship, the sample pressure monitoring dataset and the sample temperature monitoring dataset are matched to form a complete dataset, which includes the pairing of pressure and temperature values ​​for subsequent model building.

[0047] When constructing the dataset, the data is divided into a training set and a test set according to a preset ratio, for example, the preset ratio can be 8:2. The training set is used for model training and parameter tuning, and the test set is used to evaluate the model's performance and generalization ability.

[0048] The structure of the neural network is designed, including determining the number of layers, the number of neurons in each layer, and the activation function. The goal of this neural network is to predict the corresponding temperature data from the input pressure data. The constructed neural network model is trained using a prepared training set. During training, the neural network learns the relationship between the input pressure data and the corresponding temperature data. After training, the model's performance is evaluated using an independent test set to assess its generalization ability, i.e., its ability to adapt to unseen data.

[0049] Based on the evaluation results of the test set, adjust the model parameters or network structure to improve the model's performance and accuracy. Repeat the training, evaluation and tuning of the model until it reaches the preset performance requirements, such as the preset accuracy or the preset number of iterations. At this point, the pressure-temperature prediction model is obtained and can be used for subsequent temperature prediction work.

[0050] Furthermore, a temperature monitoring module is installed, including:

[0051] The tube length data of the heat exchange tube is obtained, the tube length data is evenly divided, and multiple initial monitoring points are obtained according to the division nodes.

[0052] A special section of the heat exchange tube is obtained, special monitoring points are set up on the special section, the multiple initial monitoring points are adjusted based on the special monitoring points, and the multiple temperature monitoring points are obtained according to the adjusted multiple initial monitoring points and special monitoring points.

[0053] The special pipe section includes the heat exchange tube inlet, the heat exchange tube outlet, and the heat exchange tube bend.

[0054] The multiple temperature monitoring points correspond to multiple temperature monitoring blocks, and the multiple temperature monitoring blocks are integrated to generate the temperature monitoring module.

[0055] Obtain the tube length data, i.e., the actual length of the heat exchanger tube. This data can be obtained through measurement or from the design document. Divide the tube length evenly into several segments, each of equal or similar length. Determine an initial monitoring point at each division node, located at the point where the tube length is evenly divided, to ensure that temperature changes throughout the entire tube segment can be effectively monitored.

[0056] Identify special sections within the heat exchanger tubes. These are the parts that require special attention during actual use, such as the pipe inlet, outlet, or bends. Select locations on these special sections and install special monitoring points. These monitoring points are used to monitor temperature changes in these special sections to gain a more accurate understanding of their operating status.

[0057] Based on the location of the special monitoring points, the initial monitoring points are adjusted. Specifically, initial monitoring points that are closer or farther from the special monitoring points are moved, and all points are adjusted sequentially to evenly cover the temperature changes across the entire pipe section. Based on the adjusted initial and special monitoring points, the final locations of the temperature monitoring points are determined. These temperature monitoring points can cover the temperature changes of the entire heat exchanger tube, providing comprehensive monitoring data.

[0058] Special pipe sections refer to the parts of the heat exchanger tubes that have special properties or require special attention, including the inlet, outlet, and bends of the pipe. These locations can affect the heat exchange process, so special monitoring is required.

[0059] Multiple temperature monitoring points are arranged on the heat exchange tubes. These monitoring points divide the heat exchange tubes into multiple temperature monitoring blocks according to their different locations. Each temperature monitoring block corresponds to a specific area on the pipe and is used to monitor the temperature changes in that area. All temperature monitoring blocks are integrated together to form a complete temperature monitoring module. This module includes data acquisition, storage, and analysis functions for all monitoring points, so as to monitor the temperature status of the heat exchange tubes in real time.

[0060] Furthermore, the inlet of the heat exchange tube includes an electric heating module, and the method includes:

[0061] When the compressed air energy storage device is in an abnormal operating condition, it performs abnormal operating condition temperature prediction based on temperature monitoring data and obtains multiple predicted temperature values ​​for the multiple temperature monitoring points.

[0062] When any predicted temperature value is lower than the preset antifreeze temperature, the heating command is activated;

[0063] The electric heating module is controlled to heat the circulating water based on the heating command.

[0064] When in abnormal operating conditions, such as start-up and shutdown processes, extreme operating conditions, or when abnormal operating conditions are caused by malfunctions or abnormal operations, timely and real-time monitoring of temperature data is used to predict the temperature under abnormal operating conditions and obtain the predicted temperature value for each temperature monitoring point. These values ​​indicate the predicted temperature at each location under the current state.

[0065] Monitor all predicted temperature values. If any predicted temperature value is lower than the preset antifreeze temperature, a heating command will be triggered. This preset antifreeze temperature is a safety threshold, indicating that when the temperature drops below this value, there is a risk of freezing and measures need to be taken to heat it up.

[0066] Upon receiving a heating command, the electric heating module is immediately activated to raise the temperature of the circulating water. The heating module will continuously heat the circulating water until the temperature reaches a safe range or the set target temperature. This prevents the heat exchange tubes from freezing or becoming too cold, ensuring the normal operation and safety of the system.

[0067] Furthermore, when the compressed air energy storage device is in an abnormal operating condition, based on temperature monitoring data, abnormal operating condition temperature prediction is performed to obtain multiple predicted temperature values ​​for the multiple temperature monitoring points, including:

[0068] A temperature drop comparison table for calibrated abnormal operating conditions was constructed based on big data, which includes multiple temperature drop values ​​under multiple calibrated abnormal operating conditions.

[0069] The abnormal operating condition is matched with the plurality of calibrated abnormal operating conditions to obtain the first calibrated abnormal operating condition with the highest matching value;

[0070] Based on the calibration abnormal operating condition temperature drop comparison table, the first temperature drop value of the first calibration abnormal operating condition is obtained as the temperature drop value of the abnormal operating condition.

[0071] Based on the temperature monitoring data, the temperature drop value is subtracted from the multiple temperature values ​​of the multiple temperature monitoring points to obtain the multiple predicted temperature values.

[0072] Based on big data, a large amount of data on abnormal operating conditions was collected. This data included temperature drops under different abnormal operating conditions. A calibration table of abnormal operating condition temperature drops was constructed. This calibration table of abnormal operating condition temperature drops listed multiple abnormal operating conditions and recorded the temperature drop value under each condition. These temperature drop values ​​can reflect the changes in heat exchanger tube temperature under different abnormal conditions.

[0073] The abnormal operating conditions detected in the actual operation are compared and matched with multiple pre-established calibrated abnormal operating conditions. This matching process includes comparing various parameters of the abnormal operating conditions. During the comparison process, the matching degree between each calibrated abnormal operating condition and the actual abnormal operating condition is calculated. A similarity algorithm is usually used for evaluation. The similarity calculation result is used as the matching value, and the first calibrated abnormal operating condition with the highest matching value is taken as the best matching result for the current abnormal operating condition.

[0074] Using the constructed calibration abnormal operating condition temperature drop reference table, based on the first calibration abnormal operating condition with the highest matching value, find the corresponding temperature drop value in the calibration abnormal operating condition temperature drop reference table. This value represents the amount of temperature drop in the system under the calibration abnormal operating condition. The obtained temperature drop value is used as the temperature drop value of the current actual abnormal operating condition.

[0075] Using real-time temperature monitoring data, which includes temperature values ​​from multiple monitoring points at the current time, the predicted temperature value for each monitoring point can be estimated by subtracting the temperature drop value from the corresponding temperature value for each monitoring point under abnormal operating conditions.

[0076] Through the above calculations, multiple predicted temperature values ​​are obtained from various temperature monitoring points. These values ​​represent the predicted temperature conditions at each location under the current abnormal operating conditions. These predicted values ​​can be used to assess the operating status of the system, helping to identify problems in a timely manner and take corresponding measures.

[0077] In summary, the heat exchanger operation control method for compressed air energy storage devices provided in this application has the following technical effects:

[0078] 1. By setting up a temperature monitoring module and obtaining the temperature monitoring data inside the tube, the temperature change inside the heat exchange tube can be monitored in real time, and abnormalities can be detected in time. When the temperature value is detected to be lower than the preset tube temperature warning value, the first control command is generated to give an early warning and prevent problems caused by excessively low temperature.

[0079] 2. According to the first control command, the intelligent control unit controls the water flow control valve of the heat exchanger to increase the water flow in the heat exchange tube. This can effectively regulate the heat exchange rate inside the heat exchanger to maintain the temperature inside the tube within a safe range, prevent equipment failure or performance degradation caused by abnormal temperature, and thus ensure the safe and stable operation of the entire compressed air energy storage device.

[0080] In summary, the heat exchanger operation control method for compressed air energy storage devices effectively solves the problem of abnormal heat exchanger temperature in compressed air energy storage devices by establishing a temperature monitoring and early warning mechanism and realizing intelligent regulation of heat exchanger water flow, thus ensuring the safe and stable operation of the equipment.

[0081] Based on the same inventive concept as the heat exchanger operation control method for the compressed air energy storage device in the foregoing embodiments, such as Figure 2 As shown, this application provides a heat exchanger operation control system for a compressed air energy storage device, the system comprising:

[0082] Energy storage device acquisition module 10 is used to acquire compressed air energy storage device. The compressed air energy storage device includes an intelligent control unit, an energy storage unit, and a power generation unit. The energy storage unit and the power generation unit are connected through a heat exchanger, and heat exchange tubes are arranged inside the heat exchanger.

[0083] First state setting module 20, the first state setting module 20 is used to set the compressed air energy storage device to a first state through the intelligent control unit, wherein the first state is to release compressed air from the energy storage unit to the power generation unit;

[0084] An internal temperature monitoring module 30 is used to set up a temperature monitoring module. In the first state, the temperature inside the heat exchange tube is monitored by the temperature monitoring module to obtain temperature monitoring data. The temperature monitoring data includes multiple temperature values ​​from multiple temperature monitoring points.

[0085] The control command generation module 40 is used to obtain the pipe temperature warning value, and generate a first control command when any of the plurality of temperature values ​​is lower than the pipe temperature warning value.

[0086] A water flow control module 50 is used to increase the water flow rate of the heat exchange tube by the water flow control valve of the heat exchanger based on the first control command.

[0087] Furthermore, the internal fluid of the heat exchange tube is circulating water, and the external fluid of the heat exchange tube is compressed air.

[0088] Furthermore, the system also includes a water flow amplification module to perform the following operational steps:

[0089] A pressure monitoring module is set up so that, in the first state, the pressure outside the heat exchange tube is monitored through the pressure monitoring module to obtain pressure monitoring data;

[0090] The pressure monitoring data is input into the pressure-temperature prediction model to predict the temperature and obtain the predicted temperature data.

[0091] Obtain an external temperature warning value; when the predicted temperature data is lower than the external temperature warning value, generate a second control command.

[0092] Based on the second control command, the water flow rate of the heat exchanger is increased by the water flow control valve of the heat exchanger.

[0093] Furthermore, the system also includes a model building module to perform the following steps:

[0094] Based on the heat exchanger operation data records, a sample pressure monitoring data set and a sample temperature monitoring data set are obtained, wherein the sample pressure monitoring data set and the sample temperature monitoring data set have a mapping relationship;

[0095] Based on the mapping relationship, a constructed dataset is obtained, wherein the constructed dataset includes a training set and a test set with a preset ratio;

[0096] Based on neural networks, the network structure of the pressure-temperature prediction model is constructed.

[0097] The pressure-temperature prediction model is trained using the training set, evaluated using the test set, and then fine-tuned based on the evaluation results until preset conditions are met, thus obtaining the pressure-temperature prediction model.

[0098] Furthermore, the system also includes a temperature monitoring point generation module to perform the following steps:

[0099] The tube length data of the heat exchange tube is obtained, the tube length data is evenly divided, and multiple initial monitoring points are obtained according to the division nodes.

[0100] A special section of the heat exchange tube is obtained, special monitoring points are set up on the special section, the multiple initial monitoring points are adjusted based on the special monitoring points, and the multiple temperature monitoring points are obtained according to the adjusted multiple initial monitoring points and special monitoring points.

[0101] The special pipe section includes the heat exchange tube inlet, the heat exchange tube outlet, and the heat exchange tube bend.

[0102] The multiple temperature monitoring points correspond to multiple temperature monitoring blocks, and the multiple temperature monitoring blocks are integrated to generate the temperature monitoring module.

[0103] Furthermore, the system also includes a circulating water heating module to perform the following operational steps:

[0104] When the compressed air energy storage device is in an abnormal operating condition, it performs abnormal operating condition temperature prediction based on temperature monitoring data and obtains multiple predicted temperature values ​​for the multiple temperature monitoring points.

[0105] When any predicted temperature value is lower than the preset antifreeze temperature, the heating command is activated;

[0106] The electric heating module is controlled to heat the circulating water based on the heating command.

[0107] Furthermore, the system also includes a predicted temperature value acquisition module to perform the following operational steps:

[0108] A temperature drop comparison table for calibrated abnormal operating conditions was constructed based on big data, which includes multiple temperature drop values ​​under multiple calibrated abnormal operating conditions.

[0109] The abnormal operating condition is matched with the plurality of calibrated abnormal operating conditions to obtain the first calibrated abnormal operating condition with the highest matching value;

[0110] Based on the calibration abnormal operating condition temperature drop comparison table, the first temperature drop value of the first calibration abnormal operating condition is obtained as the temperature drop value of the abnormal operating condition.

[0111] Based on the temperature monitoring data, the temperature drop value is subtracted from the multiple temperature values ​​of the multiple temperature monitoring points to obtain the multiple predicted temperature values.

[0112] Through the foregoing detailed description of the heat exchanger operation control method for a compressed air energy storage device, those skilled in the art can clearly understand the heat exchanger operation control system for a compressed air energy storage device in this embodiment. Since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and relevant parts can be referred to in the method section.

[0113] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 3As shown, the computer device includes a processor, memory, and a network interface connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage medium. The network interface is used for communication with external terminals via a network connection. The computer program is executed by the processor to implement a method for controlling the operation of a heat exchanger in a compressed air energy storage device.

[0114] Those skilled in the art will understand that Figure 3 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.

[0115] 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 specification.

[0116] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling the operation of a heat exchanger in a compressed air energy storage device, characterized in that, The method includes: A compressed air energy storage device is obtained, the compressed air energy storage device includes an intelligent control unit, an energy storage unit, and a power generation unit, wherein the energy storage unit and the power generation unit are connected through a heat exchanger, and the heat exchanger is provided with heat exchange tubes. The intelligent control unit sets the compressed air energy storage device to a first state, wherein the first state is to release compressed air from the energy storage unit to the power generation unit; A temperature monitoring module is set up. In the first state, the temperature inside the heat exchange tube is monitored through the temperature monitoring module to obtain temperature monitoring data. The temperature monitoring data includes multiple temperature values ​​from multiple temperature monitoring points. Obtain a pipe temperature warning value; when any of the plurality of temperature values ​​is lower than the pipe temperature warning value, generate a first control command. Based on the first control command, the water flow rate of the heat exchanger tube is increased by the water flow control valve of the heat exchanger. Also includes: A pressure monitoring module is set up so that, in the first state, the pressure outside the heat exchange tube is monitored through the pressure monitoring module to obtain pressure monitoring data; The pressure monitoring data is input into the pressure-temperature prediction model to predict the temperature and obtain the predicted temperature data. Obtain an external temperature warning value; when the predicted temperature data is lower than the external temperature warning value, generate a second control command. Based on the second control command, the water flow rate of the heat exchanger is increased by the water flow control valve of the heat exchanger. The inlet of the heat exchange tube includes an electric heating module, and the method includes: When the compressed air energy storage device is in an abnormal operating condition, it performs abnormal operating condition temperature prediction based on temperature monitoring data and obtains multiple predicted temperature values ​​for the multiple temperature monitoring points. When any predicted temperature value is lower than the preset antifreeze temperature, the heating command is activated; The electric heating module is controlled to heat circulating water based on the heating command; When the compressed air energy storage device is in an abnormal operating condition, based on temperature monitoring data, abnormal operating condition temperature prediction is performed to obtain multiple predicted temperature values ​​for the multiple temperature monitoring points, including: A temperature drop comparison table for calibrated abnormal operating conditions was constructed based on big data, which includes multiple temperature drop values ​​under multiple calibrated abnormal operating conditions. The abnormal operating condition is matched with the plurality of calibrated abnormal operating conditions to obtain the first calibrated abnormal operating condition with the highest matching value; Based on the calibration abnormal operating condition temperature drop comparison table, the first temperature drop value of the first calibration abnormal operating condition is obtained as the temperature drop value of the abnormal operating condition. Based on the temperature monitoring data, the temperature drop value is subtracted from the multiple temperature values ​​of the multiple temperature monitoring points to obtain the multiple predicted temperature values.

2. The method as described in claim 1, characterized in that, The internal fluid of the heat exchange tube is circulating water, and the external fluid of the heat exchange tube is compressed air.

3. The method as described in claim 1, characterized in that constructing the pressure-temperature prediction model includes: Based on the heat exchanger operation data records, a sample pressure monitoring data set and a sample temperature monitoring data set are obtained, wherein the sample pressure monitoring data set and the sample temperature monitoring data set have a mapping relationship; Based on the mapping relationship, a constructed dataset is obtained, wherein the constructed dataset includes a training set and a test set with a preset ratio; Based on neural networks, the network structure of the pressure-temperature prediction model is constructed. The pressure-temperature prediction model is trained using the training set, evaluated using the test set, and then fine-tuned based on the evaluation results until preset conditions are met, thus obtaining the pressure-temperature prediction model.

4. The method as described in claim 1, characterized in that a temperature monitoring module is provided, comprising: The tube length data of the heat exchange tube is obtained, the tube length data is evenly divided, and multiple initial monitoring points are obtained according to the division nodes. A special section of the heat exchange tube is obtained, special monitoring points are set up on the special section, the multiple initial monitoring points are adjusted based on the special monitoring points, and the multiple temperature monitoring points are obtained according to the adjusted multiple initial monitoring points and special monitoring points. The special pipe section includes the heat exchange tube inlet, the heat exchange tube outlet, and the heat exchange tube bend. The multiple temperature monitoring points correspond to multiple temperature monitoring blocks, and the multiple temperature monitoring blocks are integrated to generate the temperature monitoring module.

5. A heat exchanger operation control system for a compressed air energy storage device, characterized in that, For implementing the heat exchanger operation control method for a compressed air energy storage device according to any one of claims 1-4, the system comprises: An energy storage device acquisition module is used to acquire a compressed air energy storage device. The compressed air energy storage device includes an intelligent control unit, an energy storage unit, and a power generation unit. The energy storage unit and the power generation unit are connected through a heat exchanger, and the heat exchanger is provided with heat exchange tubes. The first state setting module is used to set the compressed air energy storage device to a first state through the intelligent control unit, wherein the first state is to release compressed air from the energy storage unit to the power generation unit. An internal temperature monitoring module is used to set up a temperature monitoring module. In the first state, the temperature inside the heat exchange tube is monitored by the temperature monitoring module to obtain temperature monitoring data, wherein the temperature monitoring data includes multiple temperature values ​​from multiple temperature monitoring points. A control command generation module is used to obtain a pipe temperature warning value. When any one of the plurality of temperature values ​​is lower than the pipe temperature warning value, a first control command is generated. A water flow control module is used to increase the water flow rate of the heat exchange tube by means of the water flow control valve of the heat exchanger based on the first control command.

6. 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 heat exchanger operation control method for a compressed air energy storage device as described in any one of claims 1 to 4.

7. 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 heat exchanger operation control method for a compressed air energy storage device as described in any one of claims 1 to 4.

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