Air cooler operation state monitoring method, device and equipment and storage medium

Abstract

The invention provides an air cooler operation state monitoring method and device, equipment and a storage medium, and the method comprises the steps: obtaining a first operation parameter of an air cooler at a first moment, and a first temperature characteristic parameter and a first power characteristic parameter of first equipment; obtaining a first heat exchange coefficient based on the first operation parameter; obtaining a first threshold range corresponding to the first heat exchange coefficient and a second threshold range corresponding to the first temperature characteristic parameter based on the correlation between the power characteristic and the heat exchange coefficient and the correlation between the power characteristic and the temperature characteristic; based on the first heat exchange coefficient, a first gradual change rate is obtained; based on the first temperature characteristic parameter and a historical temperature characteristic parameter acquired in advance, acquiring a second gradual change rate; and based on the first heat exchange coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate and the second slow change rate, the operation state of the air cooler is monitored. According to the application, the operation state of the air cooler can be accurately monitored.

Description

Technical Field

[0001] This application relates to the technical field of air coolers, and particularly to a method, device, equipment, and storage medium for monitoring the operating state of an air cooler. Background Art

[0002] In the related art, for giant generator sets, the cooling effect of the air cooler is usually comprehensively judged by parameters such as the temperature of each stator core and tooth pressing plate of the generator, the hot and cold air temperatures of the air cooler, and the supply and drainage temperatures. Moreover, the above-mentioned various parameters will change with the changes in load, ambient temperature, water temperature, etc., resulting in inability to perform quantitative analysis and making it difficult to detect the operating faults of the air cooler in a timely manner. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems in the related art to some extent.

[0004] In a first aspect, this application proposes a method for monitoring the operating state of an air cooler. The method includes: obtaining the first operating parameter of the air cooler at a first moment, as well as the first temperature characteristic parameter and the first power characteristic parameter of a first device; wherein, the first device is a device that exchanges heat through the air cooler; obtaining a first heat transfer coefficient based on the first operating parameter; obtaining a first threshold range corresponding to the first heat transfer coefficient based on a first correlation relationship between the power characteristic and the heat transfer coefficient, and obtaining a second threshold range corresponding to the first temperature characteristic parameter based on a second correlation relationship between the power characteristic and the temperature characteristic; obtaining a first slow change rate based on the first heat transfer coefficient and a previously obtained historical heat transfer coefficient; obtaining a second slow change rate based on the first temperature characteristic parameter and a previously obtained historical temperature characteristic parameter; and monitoring the operating state of the air cooler based on the first heat transfer coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate, and the second slow change rate.

[0005] In one implementation, the operating parameter includes at least one of the following: cooling water flow rate; supply water temperature; drainage water temperature; inlet air temperature; outlet air temperature.

[0006] In an optional implementation, the calculation formula of the heat transfer coefficient is as follows:

[0007]

[0008] Wherein, K represents the heat transfer coefficient, C represents the specific heat capacity of water, Q represents the cooling water flow rate, ρ represents the density of water, Δt represents the temperature difference between the supply water temperature and the drainage water temperature, A represents the heat transfer area of the air cooler, Δt mDenote the logarithmic mean temperature difference of the air cooler, which is calculated from the water supply temperature, the water discharge temperature, the inlet air temperature, and the outlet air temperature.

[0009] In one implementation, the power characteristic parameters include active power and reactive power. The obtaining of the first threshold range corresponding to the first heat transfer coefficient based on the first correlation relationship between the power characteristics and the heat transfer coefficient includes: obtaining the historical active power and historical reactive power of the first device at multiple historical moments; obtaining the historical heat transfer coefficient of the air cooler at the multiple historical moments; performing a correlation analysis on the historical active power, the historical reactive power, and the historical heat transfer coefficient to obtain the first correlation relationship; and obtaining the first threshold range based on the first active power, the first reactive power, and the first correlation relationship.

[0010] In one implementation, the monitoring of the operating state of the air cooler based on the first heat transfer coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate, and the second slow change rate includes: determining that the air cooler is operating abnormally in response to the heat transfer coefficient exceeding the first threshold range, the first temperature characteristic parameter exceeding the second threshold range, the first slow change rate being greater than a preset slow change rate threshold, and the temperature characteristic parameter being greater than a preset temperature threshold.

[0011] In one implementation, the first device is a generator, and the first temperature characteristic parameter includes the temperature value of the generator stator.

[0012] Second aspect, the present application provides a monitoring device for the operating state of an air cooler. The device includes: an acquisition module, configured to acquire a first operating parameter of the air cooler at a first moment, as well as a first temperature characteristic parameter and a first power characteristic parameter of a first device; wherein the first device is a device that exchanges heat through the air cooler; a first processing module, configured to acquire a first heat transfer coefficient based on the first operating parameter; a second processing module, configured to acquire a first threshold range corresponding to the first heat transfer coefficient based on a first correlation relationship between the power characteristic and the heat transfer coefficient, and acquire a second threshold range corresponding to the first temperature characteristic parameter based on a second correlation relationship between the power characteristic and the temperature characteristic; a third processing module, configured to acquire a first slow change rate based on the first heat transfer coefficient and a previously acquired historical heat transfer coefficient; a fourth processing module, configured to acquire a second slow change rate based on the first temperature characteristic parameter and a previously acquired historical temperature characteristic parameter; a monitoring module, configured to monitor the operating state of the air cooler based on the first heat transfer coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate, and the second slow change rate. In one implementation, the operating parameter includes at least one of the following: cooling water flow rate; supply water temperature; drain water temperature; inlet air temperature; outlet air temperature.

[0013] In an alternative implementation, the calculation formula of the heat transfer coefficient is as follows:

[0014]

[0015] Wherein, K represents the heat transfer coefficient, C represents the specific heat capacity of water, Q represents the cooling water flow rate, ρ represents the density of water, Δt represents the temperature difference between the supply water temperature and the drain water temperature, A represents the heat transfer area of the air cooler, and Δt m represents the logarithmic mean temperature difference of the air cooler, and the logarithmic mean temperature difference of the air cooler is calculated from the supply water temperature, the drain water temperature, the inlet air temperature, and the outlet air temperature.

[0016] In one implementation, the power characteristic parameter includes active power and reactive power, and the second processing module can be configured to: acquire the historical active power and historical reactive power of the first device at multiple historical moments; acquire the historical heat transfer coefficient of the air cooler at the multiple historical moments; perform a correlation analysis on the historical active power, the historical reactive power, and the historical heat transfer coefficient to acquire the first correlation relationship; and acquire the first threshold range based on the first active power, the first reactive power, and the first correlation relationship.

[0017] In one implementation, the monitoring module can be used to: determine that the air cooler is operating abnormally in response to the heat transfer coefficient exceeding the first threshold range, the first temperature characteristic parameter exceeding the second threshold range, the first slow change rate being greater than a preset slow change rate threshold, and the temperature characteristic parameter being greater than a preset temperature threshold.

[0018] In one implementation, the first device is a generator, and the first temperature characteristic parameter includes the temperature value of the generator stator.

[0019] In a third aspect, the present application provides an electronic device, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the air cooler operating state monitoring method as described in the first aspect.

[0020] In a fourth aspect, the present application provides a computer-readable storage medium for storing instructions that, when executed, implement the method as described in the first aspect.

[0021] In a fifth aspect, the present application provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the air cooler operating state monitoring method as described in the first aspect.

[0022] The air cooler operating state monitoring method, device, equipment, and storage medium provided by the present application can obtain the heat transfer coefficient based on the operating parameters of the air cooler, and then obtain the first slow change rate. At the same time, obtain the second slow change rate of the first device, and obtain the first threshold range corresponding to the first heat transfer coefficient and the second threshold range corresponding to the first temperature characteristic parameter based on the active power and reactive power of the first device, so as to monitor the operating state of the air cooler based on the first heat transfer coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate, and the second slow change rate. It can quickly and accurately monitor the operating state of the air cooler.

[0023] The additional aspects and advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. Description of the Drawings

[0024] The above and / or additional aspects and advantages of the present application will become apparent and be easily understood from the following description of the embodiments in conjunction with the drawings, where:

[0025] Figure 1 is a schematic flowchart of an air cooler operating state monitoring method provided by an embodiment of the present application;

[0026] Figure 2 is a schematic flowchart of another method for monitoring the operating state of an air cooler provided by an embodiment of the present application;

[0027] Figure 3 is a schematic diagram of a monitoring scheme for the operating state of an air cooler provided by an embodiment of the present application;

[0028] Figure 4 is a schematic structural diagram of a device for monitoring the operating state of an air cooler provided by an embodiment of the present application;

[0029] Figure 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0030] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

[0031] The method and device for monitoring the operating state of an air cooler according to the embodiments of the present application will be described below with reference to the accompanying drawings.

[0032] Figure 1 is a schematic flowchart of a method for monitoring the operating state of an air cooler provided by an embodiment of the present application. As Figure 1 shown, the method may include but is not limited to the following steps:

[0033] Step S101: Obtain the first operating parameter of the air cooler at the first moment, as well as the first temperature characteristic parameter and the first power characteristic parameter of the first device.

[0034] Wherein, the first device is a device that exchanges heat through the air cooler.

[0035] Exemplarily, the first moment may be the current moment.

[0036] Exemplarily, the temperature characteristic parameter may include but is not limited to: temperature fluctuation degree, heating rate, cooling rate, temperature rise, and device temperature.

[0037] Exemplarily, in the embodiments of the present application, the power characteristic parameter may include but is not limited to: active power, reactive power, and apparent power.

[0038] In one implementation, the first device is a generator, and the first operating temperature may be the temperature value of the generator stator.

[0039] It should be noted that in the embodiments of the present application, the maximum value among the temperatures of each part of the generator stator can be obtained as the temperature value of the generator stator.

[0040] Step S102: Obtain a first heat transfer coefficient based on the first operating parameter.

[0041] Among them, in the embodiments of the present application, the operating parameters include at least one of the following: cooling water flow rate; water supply temperature; drainage temperature; inlet air temperature; outlet air temperature.

[0042] In an alternative implementation, the calculation formula of the heat transfer coefficient is as follows:

[0043]

[0044] Among them, K represents the heat transfer coefficient, C represents the specific heat capacity of water, Q represents the cooling water flow rate, ρ represents the density of water, Δt represents the temperature difference between the water supply temperature and the drainage temperature, A represents the heat transfer area of the air cooler, and Δt m represents the logarithmic mean temperature difference of the air cooler, and the logarithmic mean temperature difference of the air cooler is calculated from the water supply temperature, the drainage temperature, the inlet air temperature, and the outlet air temperature.

[0045] Exemplarily, the unit of the heat transfer coefficient of the cooler can be W / m2·℃, the specific heat capacity of water can be taken as 4200 (J / kg·℃), and the unit of the cooling water flow rate can be m 3 / h.

[0046] Exemplarily, the calculation formula of the logarithmic mean temperature difference of the air cooler can be expressed as follows:

[0047]

[0048] Among them, ΔT1 is the temperature difference between the outlet air temperature and the drainage temperature, and ΔT2 is the temperature difference between the inlet air temperature and the water supply temperature.

[0049] Step S103: Based on the first correlation relationship between the power characteristics and the heat transfer coefficient, obtain the first threshold range corresponding to the first heat transfer coefficient, and based on the second correlation relationship between the power characteristics and the temperature characteristics, obtain the second threshold range corresponding to the first temperature characteristic parameter.

[0050] Exemplarily, different ranges of heat transfer coefficients corresponding to different power characteristics are determined in advance, so as to obtain the first threshold range corresponding to the first heat transfer coefficient according to the first active power and the first reactive power.

[0051] Exemplarily, different ranges of operating temperatures corresponding to different power characteristics are determined in advance, so as to obtain the second threshold range corresponding to the first heat transfer coefficient according to the first active power and the first reactive power.

[0052] In some embodiments, the power characteristics include active power and reactive power.

[0053] Exemplarily, different ranges of heat transfer coefficients corresponding to active power and reactive power are determined in advance, so as to obtain a first threshold range corresponding to the first heat transfer coefficient according to the first active power and the first reactive power.

[0054] Exemplarily, different ranges of operating temperatures corresponding to active power and reactive power are determined in advance, so as to obtain a second threshold range corresponding to the first heat transfer coefficient according to the first active power and the first reactive power.

[0055] Step S104: Based on the first heat transfer coefficient and the previously obtained historical heat transfer coefficient, obtain a first slow change rate.

[0056] Exemplarily, based on the first heat transfer coefficient and the previously obtained historical heat transfer coefficient, obtain the change rate of the heat transfer coefficient of the first device over time as the first slow change rate.

[0057] Step S105: Based on the first temperature characteristic parameter and the previously obtained historical temperature characteristic parameter, obtain a second slow change rate.

[0058] Exemplarily, based on the first temperature characteristic parameter and the previously obtained historical temperature characteristic parameter, obtain the change rate of the temperature characteristic parameter over time as the operating temperature slow change rate.

[0059] Step S106: Monitor the operating state of the air cooler based on the first heat transfer coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate, and the second slow change rate.

[0060] Exemplarily, determine whether the first heat transfer coefficient is within the first threshold range, whether the first operating temperature is within the second threshold range, whether the first slow change rate is greater than a preset first slow change rate threshold, and whether the second slow change rate is greater than a preset second slow change rate threshold. If at least one of the above conditions is met, it is determined that the air cooler is operating abnormally.

[0061] By implementing the embodiments of the present application, the heat transfer coefficient can be obtained based on the operating parameters of the air cooler, and then the first slow change rate can be obtained. At the same time, the second slow change rate of the first device can be obtained, and the first threshold range corresponding to the first heat transfer coefficient and the second threshold range corresponding to the first temperature characteristic parameter are obtained based on the active power and reactive power of the first device, so as to monitor the operating state of the air cooler based on the first heat transfer coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate, and the second slow change rate. It is possible to quickly and accurately monitor the operating state of the air cooler.

[0062] In some embodiments, based on the correlation between the heat transfer coefficient and the power characteristics, the first threshold range corresponding to the first heat transfer coefficient can be obtained. As an example, please refer to Figure 2 , Figure 2 which is a schematic flowchart of another method for monitoring the operating state of an air cooler provided by an embodiment of the present application. As shown in Figure 2 , the method may include but is not limited to the following steps:

[0063] Step S201: Obtain the first operating parameter of the air cooler at the first moment, as well as the first temperature characteristic parameter and the first power characteristic parameter of the first device.

[0064] In the embodiments of the present application, step S201 can be implemented in any one of the embodiments of the present application, and the embodiments of the present application do not limit this and will not elaborate further.

[0065] Step S202: Obtain the first heat transfer coefficient based on the first operating parameter.

[0066] In the embodiments of the present application, step S202 can be implemented in any one of the embodiments of the present application, and the embodiments of the present application do not limit this and will not elaborate further.

[0067] Step S203: Obtain the historical active power and historical reactive power of the first device at multiple historical moments.

[0068] Step S204: Obtain the historical heat transfer coefficients of the air cooler at multiple historical moments.

[0069] Exemplarily, obtain the historical operating parameters of the air cooler at each of the multiple historical moments, and thus obtain the historical heat transfer coefficient at each historical moment based on the historical operating parameter at each moment.

[0070] Among them, the specific implementation manner of obtaining the historical heat transfer coefficient at each historical moment based on the historical operating parameter at each moment can be implemented in any one of the embodiments of the present application, and the embodiments of the present application do not limit this and will not elaborate further.

[0071] Step S205: Perform a correlation analysis on the historical active power, historical reactive power, and historical heat transfer coefficient to obtain the first correlation.

[0072] Exemplarily, establish a three-dimensional coordinate system based on the historical active power, historical reactive power, and historical heat transfer coefficient as the first correlation.

[0073] Exemplarily, perform regression analysis on historical active power, historical reactive power, and historical heat transfer coefficient, and establish a regression equation between active power, reactive power, and heat transfer coefficient as the first correlation relationship. And obtain the data statistical characteristics of the heat transfer coefficient. For example, the standard deviation of the heat transfer coefficient.

[0074] Step S206: Based on the first active power, the first reactive power, and the first correlation relationship, obtain the first threshold range.

[0075] Exemplarily, taking the above first correlation relationship as an example of a three-dimensional coordinate system among active power, reactive power, and heat transfer coefficient, obtain the maximum heat transfer coefficient and the minimum heat transfer coefficient corresponding to the first active power and the first reactive power in this three-dimensional coordinate system as the first threshold range.

[0076] Exemplarily, taking the above first correlation relationship as an example of a regression equation between active power, reactive power, and heat transfer coefficient, obtain the predicted heat transfer coefficient corresponding to the first active power and the first reactive power based on this regression equation, and obtain the first threshold range based on this predicted heat transfer coefficient and the data statistical characteristics obtained above. For example, subtract the standard deviation from the predicted heat transfer coefficient to obtain the minimum value of the first threshold range, and add the standard deviation to the predicted heat transfer coefficient to obtain the maximum value of the first threshold range.

[0077] Step S207: Based on the first active power, the first reactive power, and the second correlation relationship, obtain the second threshold range corresponding to the first temperature characteristic parameter.

[0078] It should be noted that in the embodiments of the present application, the specific implementation manner of obtaining the second correlation relationship between the power characteristic and the temperature characteristic may refer to the specific implementation manner of the first correlation relationship between the power characteristic and the heat transfer coefficient in the embodiments of the present application.

[0079] It should be noted that in the embodiments of the present application, the specific implementation manner of obtaining the second threshold range may refer to the implementation manner of the first threshold range in the embodiments of the present application.

[0080] Step S208: Based on the first heat transfer coefficient and the pre-obtained historical heat transfer coefficient, obtain the first slow change rate.

[0081] In the embodiments of the present application, step S208 can be implemented in any one of the embodiments of the present application. The embodiments of the present application do not make any limitations in this regard and will not be elaborated further.

[0082] Step S209: Based on the first temperature characteristic parameter and the pre-obtained historical temperature characteristic parameter, obtain the second slow change rate.

[0083] In the embodiments of the present application, step S209 can be implemented in any one of the embodiments of the present application, and the embodiments of the present application do not limit this and will not elaborate further.

[0084] Step S2010: Monitor the operating state of the air cooler based on the first heat transfer coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate, and the second slow change rate.

[0085] In the embodiments of the present application, step S2010 can be implemented in any one of the embodiments of the present application, and the embodiments of the present application do not limit this and will not elaborate further.

[0086] By implementing the embodiments of the present application, the historical active power, historical reactive power of the first device, and the historical heat transfer coefficient of the air cooler can be used to establish the correlation relationship among the heat transfer coefficient, active power, and reactive power, so as to obtain the first threshold range corresponding to the first heat transfer coefficient based on this correlation relationship. To determine whether the first heat transfer coefficient is abnormal based on the first threshold range. It is possible to quickly and accurately monitor the operating state of the air cooler.

[0087] Please refer to Figure 3 , Figure 3 which is a schematic diagram of a monitoring scheme for the operating state of an air cooler provided by the embodiments of the present application. As Figure 3 shown, this scheme can collect the operating parameters of the air cooler in real time through the hydropower station computer monitoring system, convert these operating parameters into intermediate quantities through the heat transfer coefficient calculation formula, establish a three-dimensional model of the heat transfer coefficient, active power, and reactive power of the generator based on the accumulated historical data, obtain the database of the heat transfer coefficient of the air cooler under different loads, set reasonable alarm thresholds in the current state based on this three-dimensional model, and use the same method to obtain the alarm threshold of the stator core temperature, so as to monitor the operating state of the air cooler.

[0088] Please refer to Figure 4 , Figure 4 which is a schematic structural diagram of a monitoring device for the operating state of an air cooler provided by the embodiments of the present application. As Figure 4As shown, the device 400 includes: an acquisition module 401, configured to acquire the first operating parameter of the air cooler at the first moment, as well as the first temperature characteristic parameter and the first power characteristic parameter of the first device; wherein, the first device is the device that exchanges heat through the air cooler; a first processing module 402, configured to obtain a first heat transfer coefficient based on the first operating parameter; a second processing module 403, configured to obtain a first threshold range corresponding to the first heat transfer coefficient based on a first correlation relationship between the power characteristic and the heat transfer coefficient, and obtain a second threshold range corresponding to the first temperature characteristic parameter based on a second correlation relationship between the power characteristic and the temperature characteristic; a third processing module 404, configured to obtain a first slow change rate based on the first heat transfer coefficient and the previously acquired historical heat transfer coefficient; a fourth processing module 405, configured to obtain a second slow change rate based on the first temperature characteristic parameter and the previously acquired historical temperature characteristic parameter; a monitoring module 406, configured to monitor the operating state of the air cooler based on the first heat transfer coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate, and the second slow change rate. In one implementation, the operating parameter includes at least one of the following: cooling water flow rate; supply water temperature; drainage water temperature; inlet air temperature; outlet air temperature.

[0089] In an alternative implementation, the calculation formula of the heat transfer coefficient is as follows:

[0090]

[0091] Wherein, K represents the heat transfer coefficient, C represents the specific heat capacity of water, Q represents the cooling water flow rate, ρ represents the density of water, Δt represents the temperature difference between the supply water temperature and the drainage water temperature, A represents the heat transfer area of the air cooler, and Δt m represents the logarithmic mean temperature difference of the air cooler, and the logarithmic mean temperature difference of the air cooler is calculated from the supply water temperature, the drainage water temperature, the inlet air temperature, and the outlet air temperature.

[0092] In one implementation, the power characteristic parameters include active power and reactive power, and the second processing module 403 may be configured to: acquire the historical active power and historical reactive power of the first device at multiple historical moments; acquire the historical heat transfer coefficients of the air cooler at multiple historical moments; perform a correlation analysis on the historical active power, historical reactive power, and historical heat transfer coefficients to obtain a first correlation relationship; and obtain a first threshold range based on the first active power, the first reactive power, and the first correlation relationship.

[0093] In one implementation, the monitoring module 406 may be configured to: in response to the heat transfer coefficient exceeding the first threshold range, and the first temperature characteristic parameter exceeding the second threshold range, and the first slow change rate being greater than a preset slow change rate threshold, and the temperature characteristic parameter being greater than a preset temperature threshold, determine that the air cooler is operating abnormally.

[0094] In one implementation, the first device is a generator, and the first temperature characteristic parameter includes the temperature value of the generator stator.

[0095] Through the device according to the embodiments of the present application, the heat transfer coefficient can be obtained based on the operating parameters of the air cooler, and then the first slow change rate can be obtained. At the same time, the second slow change rate of the first device is obtained, and the first threshold range corresponding to the first heat transfer coefficient and the second threshold range corresponding to the first temperature characteristic parameter are obtained based on the active power and reactive power of the first device, so as to monitor the operating state of the air cooler based on the first heat transfer coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate, and the second slow change rate. It is possible to quickly and accurately monitor the operating state of the air cooler.

[0096] It should be noted that the foregoing explanation of the embodiments of the method for monitoring the operating state of the air cooler also applies to the device for monitoring the operating state of the air cooler in this embodiment, and will not be elaborated here.

[0097] To implement the above embodiments, the present application also proposes an electronic device. Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of the electronic device provided by the embodiments of the present application. As Figure 5 shown, the electronic device 500 includes: a processor 501 and a memory 502 communicatively connected to the processor 501; the memory 502 stores computer-executable instructions; the processor 501 executes the computer-executable instructions stored in the memory to implement the method provided by the foregoing embodiments.

[0098] To implement the above embodiments, the present application also proposes a computer-readable storage medium, in which computer-executable instructions are stored, and the computer-executable instructions are used to implement the method provided by the foregoing embodiments when executed by a processor.

[0099] To implement the above embodiments, the present application also proposes a computer program product, including a computer program, and the computer program implements the method provided by the foregoing embodiments when executed by a processor.

[0100] Wherein, in the description of the present application, unless otherwise specified, " / " means "or", for example, A / B may mean A or B; herein, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone.

[0101] In the description of the foregoing embodiments, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, 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.

[0102] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0103] Any process or method description in a flowchart or described otherwise herein can be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a customized logic function or process, and the scope of the preferred embodiments of the present application includes additional implementations, where the functions may be executed in a substantially simultaneous manner or in an order opposite to that shown or discussed, according to the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application pertain.

[0104] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definable sequence list of executable instructions for implementing logical functions, which can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in conjunction with these instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or otherwise processing as appropriate, and then storing it in a computer memory.

[0105] It should be understood that various parts of the present application can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple 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 in hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0106] Those of ordinary skill in the art of this technology can understand that all or part of the steps carried by the method of implementing the above embodiments can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0107] In addition, each functional unit in various embodiments of the present application may be integrated into one processing module, may exist separately as individual physical units, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0108] The above-mentioned storage medium may be a read-only memory, a magnetic disk, an optical disc, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A method for monitoring the operating state of an air cooler, characterized in that, Including: Obtain the first operating parameter of the air cooler at the first moment, as well as the first temperature characteristic parameter and the first power characteristic parameter of the first device; wherein, the first device is a device that exchanges heat through the air cooler; Obtain the first heat transfer coefficient based on the first operating parameter; Based on the first correlation relationship between the power characteristic and the heat transfer coefficient, obtain the first threshold range corresponding to the first heat transfer coefficient, and based on the second correlation relationship between the power characteristic and the temperature characteristic, obtain the second threshold range corresponding to the first temperature characteristic parameter; Obtain the first slow change rate based on the first heat transfer coefficient and the previously obtained historical heat transfer coefficient; Obtain the second slow change rate based on the first temperature characteristic parameter and the previously obtained historical temperature characteristic parameter; Monitor the operating state of the air cooler based on the first heat transfer coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate, and the second slow change rate.

2. The method according to claim 1, characterized in that, The operating parameter includes at least one of the following: Cooling water flow rate; Supply water temperature; Drainage temperature; Inlet air temperature; Outlet air temperature.

3. The method according to claim 2, characterized in that The calculation formula of the heat transfer coefficient is as follows: Among them, K represents the heat transfer coefficient, C represents the specific heat capacity of water, Q represents the cooling water flow rate, ρ represents the density of water, Δt represents the temperature difference between the supply water temperature and the drainage water temperature, A represents the heat transfer area of the air cooler, and Δt m represents the logarithmic mean temperature difference of the air cooler, and the logarithmic mean temperature difference of the air cooler is calculated from the supply water temperature, the drainage water temperature, the inlet air temperature, and the outlet air temperature.

4. The method according to claim 1, characterized in that The power characteristic parameter includes active power and reactive power. The obtaining of the first threshold range corresponding to the first heat transfer coefficient based on the first correlation relationship between the power characteristic and the heat transfer coefficient includes: Obtain the historical active power and historical reactive power of the first device at multiple historical moments; Obtain the historical heat transfer coefficient of the air cooler at the multiple historical moments; Conduct a correlation analysis on the historical active power, the historical reactive power, and the historical heat transfer coefficient to obtain the first correlation relationship; Obtain the first threshold range based on the first active power, the first reactive power, and the first correlation relationship.

5. The method according to claim 1, characterized in that, The monitoring of the operating state of the air cooler based on the first heat transfer coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate, and the second slow change rate includes: In response to the heat transfer coefficient exceeding the first threshold range, and the first temperature characteristic parameter exceeding the second threshold range, and the first slow change rate being greater than a preset slow change rate threshold, and the temperature characteristic parameter being greater than a preset temperature threshold, determine that the air cooler is operating abnormally.

6. The method according to claim 1, wherein The first device is a generator, and the first temperature characteristic parameter includes the temperature value of the generator stator.

7. An air cooler operating status monitoring device, characterized in that Including: An obtaining module, configured to obtain the first operating parameter of the air cooler at the first moment, as well as the first temperature characteristic parameter and the first power characteristic parameter of the first device; wherein, the first device is a device that exchanges heat through the air cooler; A first processing module, configured to obtain the first heat transfer coefficient based on the first operating parameter; A second processing module, configured to obtain the first threshold range corresponding to the first heat transfer coefficient based on the first correlation relationship between the power characteristic and the heat transfer coefficient, and obtain the second threshold range corresponding to the first temperature characteristic parameter based on the second correlation relationship between the power characteristic and the temperature characteristic; A third processing module, configured to obtain a first slow change rate based on the first heat transfer coefficient and a pre-acquired historical heat transfer coefficient; A fourth processing module, configured to obtain a second slow change rate based on the first temperature characteristic parameter and a pre-acquired historical temperature characteristic parameter; A monitoring module, configured to monitor the operating state of the air cooler based on the first heat transfer coefficient, the first temperature characteristic parameter, the first threshold range, the second threshold range, the first slow change rate, and the second slow change rate.

8. An electronic device, characterized in that, Comprising: A processor and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, Computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by the processor, they are used to implement the method according to any one of claims 1 to 6.

10. A computer program product, characterized in that, Comprising a computer program, where the computer program, when executed by the processor, implements the method according to any one of claims 1 to 6.

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