Cable temperature intelligent control method and device

Abstract

The invention relates to the technical field of cable temperature control, and particularly provides a cable temperature intelligent control method and device, and the method comprises the steps: obtaining the real-time cable temperature information through a temperature collection assembly for each detection region, and obtaining the cable temperature rise rate information according to a historical cable temperature data set; when the real-time cable temperature information is larger than a preset temperature threshold value or the cable temperature rising rate information is larger than a first preset temperature rising rate, the air outlet adjusting amount is calculated according to the difference value between the real-time cable temperature information and a target temperature threshold value; or according to the difference value between the cable temperature rising rate information and the target temperature rising rate, the air outlet adjusting amount is calculated; the air outlet amount of the corresponding air cooling assembly is adjusted according to the air outlet adjusting amount so as to cool the cable until the real-time cable temperature information is reduced to the target temperature threshold value and the cable temperature rising rate information is reduced to the target temperature rising rate; according to the method, zoning dynamic adjustment of the cable temperature can be realized.

Description

Technical Field

[0001] This application relates to the field of cable temperature control technology, and more specifically, to a method and apparatus for intelligent control of cable temperature. Background Technology

[0002] Urban power grids commonly use cables for power transmission. However, cables inevitably generate heat during operation, especially during peak electricity consumption periods or when there is a sudden increase in load current, at which point the heat generation of the cables increases significantly. Prolonged operation at high temperatures accelerates the aging of cable insulation materials, reduces the insulation performance and mechanical strength of the cables, and shortens their service life. In severe cases, it may even lead to major safety accidents such as insulation breakdown, short circuits, or even fires. To dissipate heat from the cables, current technology typically uses air-cooling assemblies, and the airflow rate of these assemblies is usually fixed.

[0003] However, using a fixed airflow cooling method has several shortcomings. Specifically, during peak electricity consumption periods or when there is a sudden increase in load current, the heat generated by the cable increases dramatically. A fixed airflow may not be able to meet the cable's heat dissipation needs, leading to excessively high overall cable temperature. This, in turn, accelerates the aging of the insulation material, reduces the cable's insulation performance and mechanical strength, and shortens its service life. Conversely, during off-peak electricity consumption periods, the cable generates less heat, and a fixed airflow may cause excessive heat dissipation, resulting in energy waste. Furthermore, because different areas of the cable are located in different environments, their heat dissipation needs vary. Therefore, a fixed airflow cooling method cannot simultaneously meet the heat dissipation needs of all areas of the cable, leading to localized overheating. This, in turn, causes localized reductions in insulation performance and mechanical strength, and a shortened service life in those areas.

[0004] Currently, there is no effective technical solution to the above-mentioned problems. It should be noted that the information disclosed in this section is only for understanding the background of the present invention and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] The purpose of this application is to provide a method and device for intelligent control of cable temperature, which can effectively avoid situations such as accelerated aging of insulation materials, reduced insulation performance and mechanical strength of cables, and shortened service life due to excessively high overall cable temperature, energy waste due to excessive heat dissipation of cables during off-peak electricity hours, and reduced insulation performance and mechanical strength and shortened service life of local areas of cables due to overheating.

[0006] In a first aspect, this application provides an intelligent cable temperature control method for regulating cable temperature. Applied in a cable temperature regulation system, the cable is divided into multiple detection zones. The cable temperature regulation system includes multiple temperature acquisition components and multiple air-cooling components. Each detection zone corresponds to at least one temperature acquisition component and at least one air-cooling component. The intelligent cable temperature control method includes the following steps:

[0007] S1. For each detection area, the temperature acquisition component is used to obtain real-time cable temperature information, and the cable temperature rise rate information is obtained according to the historical cable temperature dataset. The historical cable temperature dataset is a collection of all real-time cable temperature information within a preset time period before the current time node.

[0008] S2. When the real-time cable temperature information is greater than the preset temperature threshold or the cable temperature rise rate information is greater than the first preset temperature rise rate, calculate the air conditioning amount based on the difference between the real-time cable temperature information and the target temperature threshold, or calculate the air conditioning amount based on the difference between the cable temperature rise rate information and the target temperature rise rate. The target temperature threshold is less than the preset temperature threshold, and the target temperature rise rate is less than the first preset temperature rise rate.

[0009] S3. Adjust the airflow of the corresponding air-cooling component according to the airflow adjustment amount to cool the cable until the real-time cable temperature information drops to the target temperature threshold and the cable temperature rise rate information drops to the target temperature rise rate.

[0010] Optionally, step S2 includes:

[0011] S21. When the real-time cable temperature information is greater than the preset temperature threshold or the cable temperature rise rate information is greater than the first preset temperature rise rate, the initial air outlet adjustment amount is calculated based on the difference between the real-time cable temperature information and the target temperature threshold, or the initial air outlet adjustment amount is calculated based on the difference between the cable temperature rise rate information and the target temperature rise rate, using PID control.

[0012] S22. Obtain the ventilation condition parameters of the detection area corresponding to the initial air outlet adjustment amount;

[0013] S23. Obtain the first air volume compensation coefficient based on the ventilation condition parameters;

[0014] S24. Calculate the air outlet adjustment amount based on the preliminary air outlet adjustment amount and the first air outlet volume compensation coefficient.

[0015] Optionally, step S24 includes:

[0016] S241. Calculate the first adjustment amount based on the preliminary air outlet adjustment amount and the first air outlet volume compensation coefficient;

[0017] S242. Obtain the real-time airflow of the air-cooled components in the detection area adjacent to the detection area corresponding to the initial airflow adjustment amount.

[0018] S243. Obtain the second adjustment amount based on the real-time air volume;

[0019] S244. Calculate the air conditioning amount based on the first and second conditioning amounts.

[0020] Optionally, step S244 includes:

[0021] A1. Obtain the cumulative operating time and surface cleanliness of the air-cooled components in the detection area corresponding to the initial air outlet adjustment amount;

[0022] A2. Obtain the second air volume compensation coefficient based on the cumulative operating time and surface cleanliness;

[0023] A3. Calculate the airflow adjustment amount based on the first adjustment amount, the second adjustment amount, and the second airflow compensation coefficient.

[0024] Optionally, the cables are located inside the pipe rack, and the ventilation parameters include the pipe rack structure, the number of air-cooled components, and the power of the air-cooled components.

[0025] Optionally, the detection area is the area obtained by dividing the cable into regions based on the pipe gallery structure and cable laying conditions.

[0026] Optionally, the cable temperature regulation system also includes multiple water-cooling components, with each detection area corresponding to at least one water-cooling component. The intelligent cable temperature control method further includes the following steps:

[0027] S4. When the cable temperature rise rate is greater than the second preset temperature rise rate, control the water cooling component to cool the cable. The second preset temperature rise rate is greater than the first preset temperature rise rate.

[0028] Optionally, there are multiple cables, and different cables within the same detection area correspond to different temperature acquisition components. The cable temperature regulation system also includes a direction adjustment component for adjusting the air outlet direction of the air-cooling component. Step S3 includes:

[0029] S31. Obtain real-time cable temperature information that is greater than a preset temperature threshold or cable temperature rise rate information that is greater than a first preset temperature rise rate.

[0030] S32. Calculate the air outlet direction adjustment amount based on the location information and the current air outlet direction of the air-cooled component corresponding to the air outlet adjustment amount;

[0031] S33. Adjust the air outlet direction of the air-cooling component according to the air outlet direction adjustment amount, and adjust the air outlet volume of the corresponding air-cooling component according to the air outlet adjustment amount to cool the cable until the real-time cable temperature information drops to the target temperature threshold and the cable temperature rise rate information drops to the target temperature rise rate.

[0032] Optionally, when there are multiple cables with real-time cable temperature information greater than a preset temperature threshold or cable temperature rise rate information greater than a first preset temperature rise rate, the location information is the location of the cable with the highest preset temperature threshold or the highest cable temperature rise rate information.

[0033] Secondly, this application also provides a cable temperature intelligent control device for regulating cable temperature, applied in a cable temperature regulation system. The cable is divided into multiple detection zones. The cable temperature regulation system includes multiple temperature acquisition components and multiple air-cooling components. Each detection zone corresponds to at least one temperature acquisition component and at least one air-cooling component. The cable temperature intelligent control device includes:

[0034] The information acquisition module is used to acquire real-time cable temperature information for each detection area using the temperature acquisition component, and to acquire cable temperature rise rate information based on the historical cable temperature dataset. The historical cable temperature dataset is a collection of all real-time cable temperature information within a preset time period before the current time node.

[0035] The air outlet regulation calculation module is used to calculate the air outlet regulation based on the difference between the real-time cable temperature information and the target temperature threshold, or based on the difference between the cable temperature rise rate information and the target temperature rise rate, when the real-time cable temperature information is greater than the preset temperature threshold or the cable temperature rise rate information is greater than the first preset temperature rise rate. The target temperature threshold is less than the preset temperature threshold and the target temperature rise rate is less than the first preset temperature rise rate.

[0036] The airflow adjustment module is used to adjust the airflow of the corresponding air-cooling component according to the airflow adjustment amount to cool the cable until the real-time cable temperature information drops to the target temperature threshold and the cable temperature rise rate information drops to the target temperature rise rate.

[0037] As can be seen from the above, the intelligent cable temperature control method and device provided in this application can acquire real-time cable temperature information and cable temperature rise rate information in different zones. By calculating the air outlet adjustment amount of the detection zone with real-time cable temperature information greater than a preset temperature threshold or cable temperature rise rate information greater than a first preset temperature rise rate, the air outlet volume of the corresponding air-cooling component in different detection zones can be dynamically adjusted according to the temperature deviation or temperature rise rate deviation. That is, this application can realize the dynamic adjustment of cable temperature in different zones to meet the heat dissipation needs of each zone of the cable. Therefore, this application can effectively avoid the situation where the heat dissipation method with a fixed air outlet volume cannot meet the heat dissipation needs of the cable during peak power consumption periods or sudden increases in load current, excessive heat dissipation of the cable during off-peak power consumption periods, and local overheating of the cable due to the difficulty in taking into account the heat dissipation needs of each zone of the cable. Thus, it can effectively avoid the situation where the overall temperature of the cable is too high, resulting in accelerated aging of the insulation material, reduced insulation performance and mechanical strength of the cable, and shortened service life of the cable; energy waste due to excessive heat dissipation of the cable during off-peak power consumption periods; and reduced insulation performance and mechanical strength and shortened service life of the cable due to local overheating of the cable. Attached Figure Description

[0038] Figure 1 A flowchart illustrating a smart cable temperature control method provided in this application embodiment.

[0039] Figure 2 This is a schematic diagram of the structure of a cable temperature intelligent control device provided in an embodiment of this application.

[0040] Attached reference numerals: 1. Information acquisition module; 2. Air outlet adjustment calculation module; 3. Air outlet adjustment module. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0042] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Firstly, such as Figure 1 As shown, this application provides an intelligent cable temperature control method for regulating cable temperature. Applied in a cable temperature regulation system, the cable is divided into multiple detection zones. The cable temperature regulation system includes multiple temperature acquisition components and multiple air-cooling components. Each detection zone corresponds to at least one temperature acquisition component and at least one air-cooling component. The intelligent cable temperature control method includes the following steps:

[0044] S1. For each detection area, the temperature acquisition component is used to obtain real-time cable temperature information, and the cable temperature rise rate information is obtained according to the historical cable temperature dataset. The historical cable temperature dataset is a collection of all real-time cable temperature information within a preset time period before the current time node.

[0045] S2. When the real-time cable temperature information is greater than the preset temperature threshold or the cable temperature rise rate information is greater than the first preset temperature rise rate, calculate the air conditioning amount based on the difference between the real-time cable temperature information and the target temperature threshold, or calculate the air conditioning amount based on the difference between the cable temperature rise rate information and the target temperature rise rate. The target temperature threshold is less than the preset temperature threshold, and the target temperature rise rate is less than the first preset temperature rise rate.

[0046] S3. Adjust the airflow of the corresponding air-cooling component according to the airflow adjustment amount to cool the cable until the real-time cable temperature information drops to the target temperature threshold and the cable temperature rise rate information drops to the target temperature rise rate.

[0047] In this embodiment, the cable can be divided into multiple detection areas by dividing the cable at equal intervals. The intelligent cable temperature control method provided in this embodiment is applied to a cable temperature regulation system. The cable temperature regulation system includes multiple temperature acquisition components and multiple air-cooling components. The temperature acquisition components can be existing temperature sensors or infrared thermal imagers and other components capable of measuring temperature. The air-cooling components in this embodiment can be existing air-cooling mechanisms.

[0048] The preset time period in step S1 can be a value set by those skilled in the art based on experience or actual needs. This preset time period is preferably a positive integer multiple of the time interval at which the temperature acquisition component collects real-time cable temperature information. The process for obtaining cable temperature rise rate information based on the historical cable temperature dataset in step S1 can be as follows: calculate the difference between adjacent real-time cable temperature information in the historical cable temperature dataset to obtain at least one difference; calculate the cable temperature rise rate based on the difference and the acquisition interval of the real-time cable temperature information (it should be understood that if the difference is negative (equivalent to the cable temperature at the previous moment being higher than the current moment), then the cable temperature rise rate is considered 0); and use the average value or the maximum value of the cable temperature rise rates as the cable temperature rise rate information.

[0049] The preset temperature threshold in step S2 is a value set by those skilled in the art based on experience or actual needs. If the real-time cable temperature information is greater than the preset temperature threshold, it indicates that the cable temperature is too high. In this case, it is necessary to calculate the air conditioning amount based on the difference between the real-time cable temperature information and the target temperature threshold to cool the cable. The preset temperature threshold is preferably 70°C. In this embodiment, the target temperature threshold is a value set by those skilled in the art based on experience or actual needs, which is less than the preset temperature threshold. This target temperature threshold is equivalent to the ideal temperature of the cable, and the preset temperature threshold is preferably 60°C. The first preset temperature rise rate in step S2 can be a value set by those skilled in the art based on experience or actual needs. If the cable temperature rise rate information is greater than the first preset temperature rise rate, it indicates that the cable temperature rise rate is too fast and there is a risk of cable overheating. In this case, it is necessary to calculate the air conditioning amount based on the difference between the cable temperature rise rate information and the target temperature rise rate to cool the cable. The first preset temperature rise rate is preferably 1°C / minute (1°C rise per minute). In this embodiment, the target temperature rise rate is a value set by those skilled in the art based on experience or actual needs, and the target temperature rise rate is preferably 0. It should be understood that, since the cable temperature rise rate information can reflect the rising trend of the cable temperature, when the cable temperature rise rate information is greater than the first preset temperature rise rate, this embodiment first calculates the air supply adjustment amount based on the difference between the cable temperature rise rate information and the target temperature rise rate, and then adjusts the air supply volume of the corresponding air-cooling component based on the air supply adjustment amount. Therefore, this embodiment is equivalent to cooling the cable in advance when the cable temperature rises too quickly, so as to avoid the cable overheating.

[0050] Step S3 can cool the cable by adjusting the airflow of the corresponding air-cooling component according to the airflow adjustment amount using existing air-cooling component adjustment technology. Since the airflow of the air-cooling component will be adjusted to the initial value only when the real-time cable temperature information drops to the target temperature threshold and the cable temperature rise rate information drops to the target temperature rise rate, this embodiment can effectively avoid the cable overheating due to excessive heat generation or excessively rapid temperature rise. It should be understood that, since this application divides the cable into multiple detection zones, it can obtain real-time cable temperature information and cable temperature rise rate information for each detection zone. Furthermore, this application can perform zoned cooling of the cable by first calculating the air outlet adjustment amount for the detection zone where the real-time cable temperature information exceeds a preset temperature threshold or the cable temperature rise rate exceeds a first preset temperature rise rate, and then adjusting the air outlet volume of the corresponding air-cooling component based on the air outlet adjustment amount. Therefore, this application can dynamically adjust the air outlet volume of the air-cooling component corresponding to different detection zones based on temperature deviation or temperature rise rate deviation, thereby effectively avoiding situations where a fixed air outlet cooling method cannot meet the heat dissipation requirements of the cable during peak power consumption periods or sudden increases in load current, or excessive heat dissipation of the cable during off-peak power consumption periods, or localized overheating of the cable due to the difficulty in simultaneously meeting the heat dissipation requirements of each area of ​​the cable.

[0051] In some preferred embodiments, step S2 includes:

[0052] S21. When the real-time cable temperature information is greater than the preset temperature threshold or the cable temperature rise rate information is greater than the first preset temperature rise rate, the initial air outlet adjustment amount is calculated based on the difference between the real-time cable temperature information and the target temperature threshold using PID control, or the initial air outlet adjustment amount is calculated based on the difference between the cable temperature rise rate information and the target temperature rise rate using PID control.

[0053] S22. Obtain the ventilation condition parameters of the detection area corresponding to the initial air outlet adjustment amount;

[0054] S23. Obtain the first air volume compensation coefficient based on the ventilation condition parameters;

[0055] S24. Calculate the air outlet adjustment amount based on the preliminary air outlet adjustment amount and the first air outlet volume compensation coefficient.

[0056] The PID control in step S21 is preferably an existing PID control algorithm. Those skilled in the art can set the proportional, integral, and derivative parameters in the PID control algorithm based on their own experience. That is, this embodiment can use an empirical method to set the PID control parameters. The ventilation condition parameters in step S22 can reflect the ventilation conditions of the detection area. Since the ventilation conditions of the detection area are related to the ambient wind speed of the detection area, the ventilation adjustment parameters in this embodiment can be the ambient wind speed of the detection area. Step S23 can obtain the first airflow compensation coefficient by querying a pre-built mapping table of ventilation condition parameters and airflow compensation coefficients based on the ventilation condition parameters. This mapping table stores the correspondence between different ventilation condition parameters and airflow compensation coefficients. Specifically, in this mapping table, the better the ventilation condition corresponding to the ventilation condition parameter, the smaller the airflow compensation coefficient; the worse the ventilation condition corresponding to the ventilation condition parameter, the larger the airflow compensation coefficient. For example, when the ventilation condition parameter is that the detection area is located in a narrow pipe gallery section with few vents (poor ventilation capacity of the pipe gallery structure) and the number and power of the air-cooled components configured in this area are small, the airflow compensation coefficient is 1.3; when the ventilation condition parameter is that the detection area is located in a spacious and well-ventilated pipe gallery section (good ventilation capacity of the pipe gallery structure) and the number and power of the air-cooled components configured in this area are small, the airflow compensation coefficient is 1.3. When the number of components is large and the power is high, the airflow compensation coefficient is 0.9. The construction process of this mapping table can be as follows: Under ideal conditions and a specific cable heat generation, measure the required airflow to reduce the real-time cable temperature information to the target temperature threshold and the cable temperature rise rate information to the target temperature rise rate to obtain the first airflow; install different numbers of air-cooled components in different types of pipe racks; under a specific cable heat generation, measure the required airflow to reduce the real-time cable temperature information to the target temperature threshold and the cable temperature rise rate information to the target temperature rise rate to obtain the second airflow; use the ratio of the second airflow to the first airflow as the airflow compensation coefficient to obtain the airflow compensation coefficient corresponding to each ventilation condition parameter; construct a mapping table based on all ventilation condition parameters and their corresponding airflow compensation coefficients. This embodiment can also obtain the first outlet airflow compensation coefficient by inputting the ventilation condition parameters into a pre-trained ventilation condition-based airflow compensation evaluation model. This model preferably adopts a deep learning architecture and is trained using multiple pre-calibrated sets of ventilation conditions and preliminary outlet airflow coefficients. Step S24 can be used to calculate the air supply adjustment amount by multiplying the initial air supply adjustment amount by the first air supply compensation coefficient.Since the ventilation conditions of the detection area are related to the heat dissipation effect of the air-cooling component on the cable in the detection area, and this embodiment is equivalent to correcting the airflow adjustment based on the ventilation conditions by obtaining the first airflow compensation coefficient according to the ventilation condition parameters, this embodiment can effectively avoid the situation where the heat dissipation effect in the detection area is limited due to poor ventilation conditions, and the cable in the detection area still overheats. That is, this embodiment can effectively improve the accuracy and reliability of cable temperature control.

[0057] In some preferred embodiments, step S24 includes:

[0058] S241. Calculate the first adjustment amount based on the preliminary air outlet adjustment amount and the first air outlet volume compensation coefficient;

[0059] S242. Obtain the real-time airflow of the air-cooled components in the detection area adjacent to the detection area corresponding to the initial airflow adjustment amount.

[0060] S243. Obtain the second adjustment amount based on the real-time air volume;

[0061] S244. Calculate the air conditioning amount based on the first and second conditioning amounts.

[0062] Step S243 can obtain the second adjustment amount by querying a pre-built mapping table of air volume and air volume compensation amount based on the real-time air volume. This mapping table stores the correspondence between the real-time air volume of the air-cooled components in adjacent areas and the air volume compensation amount. For example, when the air volume is at the "high" level, the air volume compensation amount is a small negative value; when the air volume is at the "low" level, the air volume compensation amount is a large negative value. Step S244 can calculate the air volume adjustment amount by summing the first adjustment amount and the second adjustment amount. Since the detection areas are interconnected, adjacent detection areas can experience airflow interference and heat transfer. The degree of airflow interference and heat transfer is related to the airflow output of the air-cooled components. Therefore, this embodiment reduces the airflow influence and heat transfer interference of adjacent detection areas on the detection area corresponding to the initial airflow adjustment. This is achieved by first obtaining the real-time airflow output of the air-cooled components in the detection areas adjacent to the detection area corresponding to the initial airflow adjustment, then obtaining the second adjustment based on the real-time airflow output, and finally calculating the airflow adjustment based on the first and second adjustment. In other words, this embodiment reduces the impact of the heat dissipation behavior of adjacent detection areas on the heat dissipation behavior of the current detection area, thereby effectively improving the accuracy and reliability of the airflow adjustment, ensuring that the heat dissipation requirements of the detection area are met, and further improving the accuracy and reliability of cable temperature control.

[0063] In some preferred embodiments, step S244 includes:

[0064] A1. Obtain the cumulative operating time and surface cleanliness of the air-cooled components in the detection area corresponding to the initial air outlet adjustment amount;

[0065] A2. Obtain the second air volume compensation coefficient based on the cumulative operating time and surface cleanliness;

[0066] A3. Calculate the airflow adjustment amount based on the first adjustment amount, the second adjustment amount, and the second airflow compensation coefficient.

[0067] The cumulative running time in this embodiment can be obtained by a timer, which starts timing when the air-cooled component starts running and stops timing when the air-cooled component stops running. This embodiment can utilize existing visual inspection technology to obtain the surface cleanliness of the air-cooled component. Specifically, this embodiment can quantify the surface cleanliness by analyzing the amount of dust deposition or the degree of dirt on the surface of the air-cooled component. Step A2 can obtain the second airflow compensation coefficient by querying a pre-built mapping table of running time, cleanliness, and airflow compensation coefficient based on the cumulative running time and surface cleanliness. This mapping table stores the correspondence between different combinations of running time and surface cleanliness and the corresponding airflow compensation coefficient. Preferably, in this mapping table, the longer the running time and the lower the surface cleanliness, the larger the airflow compensation coefficient should be. For example, when the running time is 0-1000 hours and the cleanliness is clean, the airflow compensation coefficient is 1.0; when the running time is 1000-5000 hours and the cleanliness is moderate, the airflow compensation coefficient is 1. 2. When the operating time exceeds 5000 hours and the cleanliness level is dirty, the airflow compensation coefficient is 1.5. The construction process of this mapping table can be as follows: Select air-cooled component samples with different cumulative operating times and different surface cleanliness levels; in a controlled experimental environment, measure the actual airflow of these air-cooled components under different set airflow rates; use the ratio of the set airflow rate to the actual airflow rate of the air-cooled component as the airflow compensation coefficient of the air-cooled component under the current operating time and cleanliness level to obtain different combinations of operating time and cleanliness and their corresponding airflow compensation coefficients; construct a mapping table based on all combinations of operating time and cleanliness and their corresponding airflow compensation coefficients. Step A3 can be calculated by first summing the first and second adjustment values, and then multiplying the sum by the second airflow compensation coefficient. In practical applications, the performance of air-cooled components gradually degrades with increasing operating time and decreasing surface cleanliness, resulting in actual airflow being less than theoretical airflow and poorer heat dissipation. This embodiment first obtains the cumulative operating time and surface cleanliness of the air-cooled components in the detection area corresponding to the initial airflow adjustment amount. Then, it obtains a second airflow compensation coefficient based on the cumulative operating time and surface cleanliness. Finally, it calculates the airflow adjustment amount based on the first adjustment amount, the second adjustment amount, and the second airflow compensation coefficient. In other words, this embodiment is equivalent to correcting the airflow adjustment amount based on the cumulative operating time and surface cleanliness of the air-cooled components. Therefore, this embodiment can effectively avoid situations where the air-cooled components' heat dissipation effect on the cable cannot meet the cable's heat dissipation requirements due to the performance of the air-cooled components. Thus, this embodiment further improves the accuracy and reliability of the airflow adjustment amount, thereby further improving the precision and reliability of cable temperature control.

[0068] In some preferred embodiments, the cable is located within a pipe rack, and the ventilation parameters include the pipe rack structure, the number of air-cooled components, and the power of the air-cooled components. In this embodiment, the cable is located within a pipe rack, the pipe rack structure of which reflects the specific structure of the pipe rack, the number of air-cooled components corresponds to the number of air-cooled components in the detection area (equivalent to the number of air-cooled components installed in a specific detection area within the pipe rack), and the power of the air-cooled components reflects the cooling capacity of a single air-cooled component and the maximum airflow it can generate. Since different pipe rack structures inherently possess different natural ventilation capabilities—for example, a pipe rack with more open space and ventilation shafts has better ventilation capabilities compared to a closed, poorly ventilated pipe rack—and the number and power of the air-cooled components installed in the detection area directly determine the forced ventilation capability of the detection area, this embodiment can use the pipe rack structure, the number of air-cooled components, and the power of the air-cooled components as ventilation parameter information.

[0069] In some specific implementations, detection area 1 is located in a narrow part of the pipe gallery with limited natural ventilation and is equipped with two standard air-cooled fans. Detection area 2 is located in a wide part of the pipe gallery and is equipped with three high-power fans. That is, the number and power of air-cooled components in detection area 1 are less than those in detection area 2. Therefore, the ventilation conditions in detection area 1 are worse than those in detection area 2. If the cables in detection area 1 and detection area 2 have experienced similar temperature rises, the air outlet regulation of detection area 1 is greater than that of detection area 2.

[0070] In some preferred embodiments, the detection area is a region obtained by dividing the cable area based on the pipe gallery structure and cable laying pattern. Specifically, when dividing the area based on the pipe gallery structure, this embodiment can consider factors such as the shape, size, and ventilation hole location of the pipe gallery. For example, in areas with complex pipe gallery structures or poor ventilation, the detection area can be divided into smaller and denser sections for more precise detection and control of cable temperature. Conversely, in areas with simple pipe gallery structures or good ventilation, the detection area can be divided into larger and sparser sections to reduce the number of temperature acquisition components and air-cooling components required. When dividing the area based on the cable laying pattern, this embodiment can consider factors such as the number of cables, their arrangement, and spacing. For example, in areas with dense cable laying, the detection area can be divided into smaller and denser sections to more accurately reflect the temperature distribution in these areas. Conversely, in areas with sparse cable laying, the detection area can be divided into larger and sparser sections. This embodiment is equivalent to dividing the cable into zones by comprehensively considering the structure of the pipe gallery and the cable laying situation. Therefore, this embodiment can reduce the number of air-cooling components and temperature acquisition components while ensuring the accuracy of cable temperature control, thereby effectively reducing the cost of cable temperature control.

[0071] In some preferred embodiments, the cable temperature regulation system further includes multiple water-cooling components, with each detection area corresponding to at least one water-cooling component. The intelligent cable temperature control method further includes the following steps:

[0072] S4. When the cable temperature rise rate is greater than the second preset temperature rise rate, control the water cooling component to cool the cable. The second preset temperature rise rate is greater than the first preset temperature rise rate.

[0073] The water-cooling component in this embodiment can be a water-cooled pipe in close contact with the cable, or it can be a spray device that sprays cooling water onto the cable surface. Since the second preset temperature rise rate in this embodiment is greater than the first preset temperature rise rate, the second preset temperature rise rate represents a more urgent situation regarding cable temperature rise. Specifically, when the cable temperature rise rate is greater than the second preset temperature rise rate, relying solely on the air-cooling component may not be sufficient to effectively suppress the cable's temperature rise. Therefore, when the cable temperature rise rate is greater than the second preset temperature rise rate, the water-cooling component is controlled to cool the cable, simultaneously utilizing both air-cooling and water-cooling methods to suppress the cable's temperature rise. This effectively avoids the cable overheating in the detection area due to the air-cooling component's inability to effectively suppress the cable's temperature rise, and further effectively avoids the reduction in insulation performance and mechanical strength, as well as the shortened service life, caused by localized overheating of the cable. This embodiment is equivalent to using only the air-cooling component to cool the cable when the temperature rise rate is relatively slow; and using both the air-cooling and water-cooling components to cool the cable when the temperature rise rate is relatively rapid, thereby improving the heat dissipation effect of the cable and ensuring the safety and reliability of cable operation. It should be understood that this embodiment can control the water cooling component to stop working after the cable temperature rise rate information decreases to less than the second preset temperature rise rate.

[0074] In some preferred embodiments, there are multiple cables, and different cables within the same detection area correspond to different temperature acquisition components. The cable temperature regulation system also includes a direction adjustment component for adjusting the air outlet direction of the air-cooling component. Step S3 includes:

[0075] S31. Obtain real-time cable temperature information that is greater than a preset temperature threshold or cable temperature rise rate information that is greater than a first preset temperature rise rate.

[0076] S32. Calculate the air outlet direction adjustment amount based on the location information and the current air outlet direction of the air-cooled component corresponding to the air outlet adjustment amount;

[0077] S33. Adjust the air outlet direction of the air-cooling component according to the air outlet direction adjustment amount, and adjust the air outlet volume of the corresponding air-cooling component according to the air outlet adjustment amount to cool the cable until the real-time cable temperature information drops to the target temperature threshold and the cable temperature rise rate information drops to the target temperature rise rate.

[0078] When the real-time cable temperature information of some or all of multiple cables exceeds a preset temperature threshold or the temperature rise rate information exceeds a first preset temperature rise rate, this embodiment identifies the cable location information. Specifically, since the cables are fixed, i.e., the cable installation position is a fixed value, the cable position can be a pre-calibrated value. That is, this embodiment can directly obtain the location information of the cables whose real-time cable temperature information exceeds the preset temperature threshold or whose temperature rise rate information exceeds the first preset temperature rise rate. Since different cables correspond to different temperature acquisition components, this embodiment can also determine the cable location information by utilizing the arrangement position of the temperature acquisition components within the detection area. The direction adjustment component of this embodiment can be an electric push rod mechanism. This direction adjustment component is connected to the air outlet of the air-cooling component. This embodiment can change the air outlet direction of the air-cooling component by controlling the extension and retraction of the electric push rod mechanism to adjust the angle of the air outlet in the horizontal or vertical direction. This embodiment calculates the airflow direction adjustment amount by first obtaining the centerline of the air outlet of the air-cooling component, and then calculating the deviation angle between the centerline of the air outlet and the position of the high-temperature cable. After receiving the airflow direction adjustment amount, the direction adjustment component drives the electric push rod mechanism to extend or retract, so that the air outlet of the air-cooling component is aligned with the cable whose real-time cable temperature information exceeds a preset temperature threshold or whose temperature rise rate information exceeds a first preset temperature rise rate. Since this embodiment can calculate the airflow direction adjustment amount based on the position information and the current airflow direction of the air-cooling component corresponding to the airflow adjustment amount, and control the direction adjustment component to adjust the airflow direction of the air-cooling component based on the airflow direction adjustment amount, so that the air outlet of the air-cooling component is aligned with the cable whose real-time cable temperature information exceeds a preset temperature threshold or whose temperature rise rate information exceeds a first preset temperature rise rate, this embodiment can effectively reduce the waste of cold air and improve cooling efficiency.

[0079] In some preferred embodiments, when there are multiple cables with real-time cable temperature information exceeding a preset temperature threshold or with a cable temperature rise rate exceeding a first preset temperature rise rate, the location information is the location of the cable with the highest preset temperature threshold or the highest cable temperature rise rate. Since the location information in this embodiment is the location of the cable with the highest preset temperature threshold or the highest cable temperature rise rate, this embodiment is equivalent to selecting the cable most in need of cooling from among multiple cables requiring cooling, and prioritizing the cooling of that cable.

[0080] As can be seen from the above, the intelligent cable temperature control method provided in this application can acquire real-time cable temperature information and cable temperature rise rate information in different zones. It can also dynamically adjust the airflow of the air-cooling components corresponding to different detection zones based on temperature deviation or temperature rise rate deviation by calculating the airflow adjustment amount of detection zones with real-time cable temperature information exceeding a preset temperature threshold or cable temperature rise rate exceeding a first preset temperature rise rate. In other words, this application can achieve dynamic adjustment of cable temperature in different zones to meet the heat dissipation needs of each zone of the cable. Therefore, this application can effectively avoid situations where a fixed airflow cooling method cannot meet the heat dissipation needs of the cable during peak power consumption periods or sudden increases in load current, excessive heat dissipation of the cable during off-peak power consumption periods, and localized overheating of the cable due to the difficulty in simultaneously meeting the heat dissipation needs of each zone. This effectively avoids situations where excessively high overall cable temperature leads to accelerated aging of insulation materials, reduced insulation performance and mechanical strength, and shortened cable lifespan; excessive heat dissipation of the cable during off-peak power consumption periods leads to energy waste; and localized overheating of the cable leads to reduced insulation performance and mechanical strength and shortened service life in localized areas.

[0081] Secondly, this application also provides a cable temperature intelligent control device for regulating cable temperature, applied in a cable temperature regulation system. The cable is divided into multiple detection zones. The cable temperature regulation system includes multiple temperature acquisition components and multiple air-cooling components. Each detection zone corresponds to at least one temperature acquisition component and at least one air-cooling component. The cable temperature intelligent control device includes:

[0082] Information acquisition module 1 is used to acquire real-time cable temperature information for each detection area using temperature acquisition components, and to acquire cable temperature rise rate information based on historical cable temperature dataset. The historical cable temperature dataset is a collection of all real-time cable temperature information within a preset time period before the current time node.

[0083] The air outlet regulation calculation module 2 is used to calculate the air outlet regulation based on the difference between the real-time cable temperature information and the target temperature threshold, or the difference between the cable temperature rise rate information and the target temperature rise rate, when the real-time cable temperature information is greater than the preset temperature threshold or the cable temperature rise rate information is greater than the first preset temperature rise rate. The target temperature threshold is less than the preset temperature threshold and the target temperature rise rate is less than the first preset temperature rise rate.

[0084] The air volume adjustment module 3 is used to adjust the air volume of the corresponding air-cooling component according to the air volume adjustment amount to cool the cable until the real-time cable temperature information drops to the target temperature threshold and the cable temperature rise rate information drops to the target temperature rise rate.

[0085] The cable temperature intelligent control device provided in this application includes an information acquisition module 1, an air outlet adjustment calculation module 2, and an air outlet adjustment module 3. The cable temperature intelligent control device provided in this embodiment is used to execute the steps in the cable temperature intelligent control method provided in the first aspect above. The principle of the cable temperature intelligent control device provided in this embodiment is the same as the principle of the cable temperature intelligent control method provided in the first aspect above, and will not be discussed in detail here.

[0086] In the embodiments provided in this application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of the above units is only a logical functional division, and there may be other division methods in actual implementation. Furthermore, multiple units or components may be combined or integrated into another robot, or some features may be ignored or not executed. Additionally, the coupling or direct coupling or communication connection shown or discussed may be through some communication interface; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0087] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0088] In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations.

[0089] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for intelligent control of cable temperature, used to regulate the temperature of a cable, characterized in that, In a cable temperature control system, the cable is divided into multiple detection zones. The cable temperature control system includes multiple temperature acquisition components and multiple air-cooling components. Each detection zone corresponds to at least one temperature acquisition component and at least one air-cooling component. The intelligent cable temperature control method includes the following steps: S1. For each detection area, the temperature acquisition component is used to obtain real-time cable temperature information, and the cable temperature rise rate information is obtained according to the historical cable temperature dataset. The historical cable temperature dataset is a collection of all real-time cable temperature information within a preset time period before the current time node. S2. When the real-time cable temperature information is greater than the preset temperature threshold or the cable temperature rise rate information is greater than the first preset temperature rise rate, calculate the air conditioning amount based on the difference between the real-time cable temperature information and the target preset temperature threshold, or calculate the air conditioning amount based on the difference between the cable temperature rise rate information and the target temperature rise rate, wherein the target temperature threshold is less than the preset temperature threshold and the target temperature rise rate is less than the first preset temperature rise rate. S3. Adjust the airflow of the corresponding air-cooling component according to the airflow adjustment amount to cool the cable until the real-time cable temperature information drops to the target temperature threshold and the cable temperature rise rate information drops to the target temperature rise rate.

2. The intelligent cable temperature control method according to claim 1, characterized in that, Step S2 includes: S21. When the real-time cable temperature information is greater than the preset temperature threshold or the cable temperature rise rate information is greater than the first preset temperature rise rate, the initial air outlet adjustment amount is calculated based on the difference between the real-time cable temperature information and the target preset temperature threshold using PID control, or the initial air outlet adjustment amount is calculated based on the difference between the cable temperature rise rate information and the target temperature rise rate using PID control. S22. Obtain the ventilation condition parameters of the detection area corresponding to the initial air outlet adjustment amount; S23. Obtain the first air volume compensation coefficient based on the ventilation condition parameters; S24. Calculate the air outlet adjustment amount based on the preliminary air outlet adjustment amount and the first air outlet compensation coefficient.

3. The intelligent cable temperature control method according to claim 2, characterized in that, Step S24 includes: S241. Calculate the first adjustment amount based on the preliminary air outlet adjustment amount and the first air outlet compensation coefficient; S242. Obtain the real-time airflow of the air-cooled component in the detection area adjacent to the detection area corresponding to the initial airflow adjustment amount; S243. Obtain the second adjustment amount based on the real-time air volume; S244. Calculate the air conditioning amount based on the first adjustment amount and the second adjustment amount.

4. The intelligent cable temperature control method according to claim 3, characterized in that, Step S244 includes: A1. Obtain the cumulative operating time and surface cleanliness of the air-cooled components in the detection area corresponding to the initial air outlet adjustment amount; A2. Obtain the second air volume compensation coefficient based on the cumulative operating time and the surface cleanliness; A3. Calculate the air outlet adjustment amount based on the first adjustment amount, the second adjustment amount, and the second air outlet volume compensation coefficient.

5. The intelligent cable temperature control method according to claim 2, characterized in that, The cable is located inside the pipe gallery, and the ventilation parameters include the pipe gallery structure, the number of air-cooled components, and the power of the air-cooled components.

6. The intelligent cable temperature control method according to claim 5, characterized in that, The detection area is the area obtained by dividing the cable into regions based on the structure of the pipe gallery and the laying of the cable.

7. The intelligent cable temperature control method according to claim 1, characterized in that, The cable temperature regulation system further includes multiple water-cooling components, and each detection area corresponds to at least one of the water-cooling components. The intelligent cable temperature control method further includes the following steps: S4. When the cable temperature rise rate is greater than the second preset temperature rise rate, control the water cooling component to cool the cable, wherein the second preset temperature rise rate is greater than the first preset temperature rise rate.

8. The intelligent cable temperature control method according to claim 1, characterized in that, The number of cables is multiple, and different cables within the same detection area correspond to different temperature acquisition components. The cable temperature regulation system also includes a direction adjustment component for adjusting the air outlet direction of the air-cooling component. Step S3 includes: S31. Obtain real-time cable temperature information that is greater than the preset temperature threshold or cable temperature rise rate information that is greater than the first preset temperature rise rate. S32. Calculate the air outlet direction adjustment amount based on the location information and the current air outlet direction of the air-cooled component corresponding to the air outlet adjustment amount; S33. Control the direction adjustment component to adjust the air outlet direction of the air-cooling component according to the air outlet direction adjustment amount, and adjust the air outlet volume of the corresponding air-cooling component according to the air outlet adjustment amount to cool the cable until the real-time cable temperature information drops to the target temperature threshold and the cable temperature rise rate information drops to the target temperature rise rate.

9. The intelligent cable temperature control method according to claim 8, characterized in that, When there are multiple cables with real-time cable temperature information greater than the preset temperature threshold or cable temperature rise rate information greater than the first preset temperature rise rate, the location information is the location of the cable with the highest preset temperature threshold or the highest cable temperature rise rate information.

10. A cable temperature intelligent control device for regulating cable temperature, characterized in that, In a cable temperature control system, the cable is divided into multiple detection zones. The cable temperature control system includes multiple temperature acquisition components and multiple air-cooling components. Each detection zone corresponds to at least one temperature acquisition component and at least one air-cooling component. The intelligent cable temperature control device includes: The information acquisition module is used to acquire real-time cable temperature information using the temperature acquisition component for each detection area, and to acquire cable temperature rise rate information based on the historical cable temperature dataset, wherein the historical cable temperature dataset is a collection of all real-time cable temperature information within a preset time period before the current time node. An air outlet regulation calculation module is used to calculate the air outlet regulation based on the difference between the real-time cable temperature information and a target preset temperature threshold, or to calculate the air outlet regulation based on the difference between the cable temperature rise rate information and a target temperature rise rate, when the real-time cable temperature information is greater than a preset temperature threshold or the cable temperature rise rate information is greater than a first preset temperature rise rate. The target temperature threshold is less than the preset temperature threshold, and the target temperature rise rate is less than the first preset temperature rise rate. An airflow adjustment module is used to adjust the airflow of the corresponding air-cooling component according to the airflow adjustment amount to cool the cable until the real-time cable temperature information drops to the target temperature threshold and the cable temperature rise rate information drops to the target temperature rise rate.

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