Prefabricated cable duct bank and heat dissipation control method and device

Abstract

The invention discloses a prefabricated cable duct bank and a heat dissipation control method and device, and the method comprises the following steps: collecting a first parameter value which comprises the air temperature and / or the power cable temperature in the prefabricated cable duct bank; a second parameter value is obtained, and a corresponding fan starting condition and / or a fan closing condition are / is generated according to the second parameter value; and whether the first parameter value meets the fan starting condition or the fan stopping condition or not is judged, and starting and stopping of the fan are controlled according to the judgment result. The air duct and the fan are arranged in the prefabricated cable duct bank, and the opening and closing conditions of the fan are flexibly set, so that the power cable in the duct bank laying mode is timely cooled, the cooling effect is good, the current-carrying capacity and the power transmission efficiency of the power cable are remarkably improved, temperature monitoring can be carried out on the running state of each cable, and the service life of the cable is prolonged. The use safety is higher, and popularization and application in the power industry are easier.

Description

Technical Field

[0001] The present invention relates to the technical field of power cable transmission technology, and in particular to a prefabricated cable conduit and a heat dissipation control method and device. Background Art

[0002] With the continuous advancement of China's urbanization process, cities are developing faster and faster, and the demand for electricity is also increasing. Therefore, it is necessary to strengthen the construction of urban power grids. There are many ways to lay power cables, which can be divided into direct burial, tunnel, cable trench, pipe laying, shaft, bridge, underwater laying, etc. Among them, cable pipe laying is a laying method in which the cable is laid in a pipe pre-buried underground. It is usually used for underground cables crossing roads and railways, underground cables passing through crowded areas such as sidewalks, squares, heavy traffic, and underground corridors of industrial and mining enterprises. Compared with other laying methods, pipe laying has the advantages of being less susceptible to external damage, taking up less space, being safe and stable, and being able to effectively prevent pests and moisture.

[0003] However, the existing cable conduit laying method has the disadvantage of poor heat dissipation. When a large current flows through the cable or the load suddenly increases, the cable temperature will increase significantly, which can easily cause safety accidents. In order to ensure the smooth operation of the transmission system, usually only the current carrying capacity can be controlled, which seriously restricts the transmission capacity. Summary of the Invention

[0004] The present invention provides a prefabricated cable conduit and a heat dissipation control method and device, which solve the technical problem that accumulated heat is difficult to dissipate when multiple tubes are arranged inside the prefabricated cable conduit.

[0005] A first aspect of an embodiment of the present invention provides a prefabricated cable duct, which includes a concrete duct body, an air duct passing through the concrete duct body, and several groups of power cable pipes arranged parallel to the air duct. The several groups of power cable pipes are evenly distributed around the air duct in the concrete duct body, and a fan is provided in the air duct.

[0006] A second aspect of an embodiment of the present invention provides a method for controlling heat dissipation of a prefabricated cable duct, comprising the following steps: Step 1: collecting a first parameter value, where the first parameter value includes the air temperature and / or the power cable temperature in the prefabricated cable duct; Step 2: obtaining a second parameter value, and generating a corresponding fan on condition and / or fan off condition according to the second parameter value; Step 3: determine whether the first parameter value meets the fan on condition or the fan off condition, and control the on and off of the fan according to the determination result.

[0007] A third aspect of an embodiment of the present invention provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the heat dissipation control method for the prefabricated cable duct described above is implemented.

[0008] A fourth aspect of an embodiment of the present invention provides a heat dissipation control device for a prefabricated cable duct, comprising a computer-readable storage medium and a processor, wherein the processor implements the steps of the above-mentioned heat dissipation control method for the prefabricated cable duct when executing the computer program on the computer-readable storage medium.

[0009] A fifth aspect of the embodiments of the present invention provides a heat dissipation control device for a prefabricated cable duct, comprising a collection module, a condition generation module, and a control module. The acquisition module is used to acquire a first parameter value, wherein the first parameter value includes the air temperature and / or the power cable temperature in the prefabricated cable duct; The condition generation module is used to obtain a second parameter value and generate a corresponding fan start condition and / or fan shut-down condition according to the second parameter value; The control module is used to determine whether the first parameter value meets the fan on condition or the fan off condition, and control the on and off of the fan according to the determination result.

[0010] The beneficial effects of the present invention are as follows: the present invention provides a prefabricated cable conduit and a heat dissipation control method and device, in which air ducts and fans are arranged in the prefabricated cable conduit, and the fan on and off conditions are flexibly set, so as to timely dissipate heat for the power cables in the conduit laying mode. Not only is the heat dissipation effect good, but the current carrying capacity and transmission efficiency of the power cables are significantly improved. At the same time, the temperature of the operating status of each cable can be monitored, which is safer to use and easier to promote and apply in the power industry.

[0011] In order to make the above-mentioned objects, features and advantages of the invention more obvious and easy to understand, preferred embodiments of the present invention are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a schematic structural diagram of the prefabricated cable conduit provided in Example 1; Figure 22 is a flow chart of a heat dissipation control method for a prefabricated cable conduit provided in Example 2; Figure 3 Schematic diagram of the structure of the heat dissipation control device for the prefabricated cable duct provided in Example 3; Figure 4 This is a schematic structural diagram of the heat dissipation control device for the prefabricated cable duct provided in Example 4. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0015] It should be noted that, unless there is a conflict, the various features of the embodiments of the present invention may be combined with each other and are all within the scope of protection of the present invention. In addition, although the functional modules are divided in the device schematics and the logical order is shown in the flow charts, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flow charts. Furthermore, the terms "first," "second," "third," etc. used in the present invention do not limit the data or execution order, but only distinguish between identical or similar items with substantially the same functions and effects.

[0016] Figure 1 This is a schematic diagram of the structure of the prefabricated cable conduit provided in Example 1. Figure 1 As shown, the prefabricated cable pipe includes a concrete pipe body 1, an air duct 3 passing through the concrete pipe body 1, and several groups of power cable pipes 2 arranged parallel to the air duct 3. The several groups of power cable pipes 2 are evenly distributed around the air duct 3 in the concrete pipe body 1. A fan 4, such as an axial flow fan, is provided in the air duct 3. When the temperature in the prefabricated cable pipe is high due to heating of the cables, the fan can be turned on in time to dissipate heat, which has a good heat dissipation effect and ensures the safety of the power cable and the power transmission efficiency.

[0017] It can be understood that the above-mentioned power cable conduit 2 can adopt modified polypropylene cable conduit, and the power cable conduit 2 is distributed in a rectangular array on the cross section of the concrete pipe body 1. Of course, it can also be evenly arranged along the circumference of the concrete pipe body 1 to meet actual usage requirements.

[0018] In a preferred embodiment, in order to further improve the heat dissipation effect, as Figure 1As shown, the air duct 3 can be set at the center of the concrete pipe body 1, and the concrete pipe body 1 is further provided with multiple groups of heat dissipation pipes 5 that are parallel to and penetrate the concrete pipe body 1. The multiple groups of heat dissipation pipes 5 are evenly distributed around the air duct 3 and staggered with the power cable pipes 2. By providing heat dissipation pipes 5 made of materials such as copper pipes, aluminum pipes, and PPR pipes, and introducing a cooling medium such as cooling air, cooling water, or heat exchange fluid into the heat dissipation pipes 5, heat exchange is performed between the cooling medium in the heat dissipation pipes 5 and the power cable, and in cooperation with the fan, the temperature of the power cable is further reduced, thereby improving the power transmission efficiency of the power cable.

[0019] In a preferred embodiment, multiple sets of functional cable ducts are further provided within the concrete conduit body 1, running parallel to and extending through the concrete conduit body 1. These sets of functional cable ducts are evenly distributed around the air duct 3 and interlaced with the functional cable ducts 2. It is understood that communication optical cables, weak current cables, power cables, and the like can be installed within these functional cable ducts, allowing for pre-arrangement and avoiding multiple excavations when needed, thereby reducing the operating and maintenance costs of the prefabricated cable conduits.

[0020] Figure 2 This is a flow chart of a heat dissipation control method for a prefabricated cable duct provided in Example 2. Figure 2 As shown, the heat dissipation control method includes the following steps: Step 1: collecting a first parameter value, where the first parameter value includes the air temperature and / or the power cable temperature in the prefabricated cable duct; Step 2: obtaining a second parameter value, and generating a corresponding fan on condition and / or fan off condition according to the second parameter value; Step 3: determine whether the first parameter value meets the fan on condition or the fan off condition, and control the on and off of the fan according to the determination result.

[0021] The above embodiment provides a heat dissipation control method for a prefabricated cable duct. First, an air duct and a fan are set in the prefabricated cable duct, and the fan on and off conditions are flexibly set, so as to timely dissipate heat for the power cable under the duct laying method. Not only is the heat dissipation effect good, but it also significantly improves the current carrying capacity and transmission efficiency of the power cable. At the same time, it can monitor the temperature of the operating status of each cable, which is safer to use and easier to promote and apply in the power industry.

[0022] Each step of the above method is described in detail below using specific embodiments.

[0023] It is understood that in one embodiment, a determination is first made as to whether a functional cable conduit is provided within the prefabricated cable conduit. If not, the power cable temperature is collected as the first parameter value; if so, the air temperature is collected as the first parameter value. Whether a functional cable conduit is provided within the prefabricated cable conduit or whether a functional cable is installed therein can be determined by reviewing the design drawings of the prefabricated cable conduit or inspecting the prefabricated cable conduit.

[0024] If other functional cables are provided, and the functional cables will also generate heat, the air temperature in the prefabricated cable duct can be collected to make an overall evaluation of the heating state. Specifically, the temperature at the fan in the air duct can be collected by a temperature sensor as the air temperature. In other embodiments, a temperature measuring cavity can be provided in the middle area near the air duct, the power cable duct and the functional cable duct, and a temperature measuring cable can be provided in the temperature measuring cavity. The temperature of at least one temperature measuring cavity area is collected by the temperature measuring cable, or the average temperature of multiple temperature measuring cavity areas is calculated and used as the air temperature. The air temperature can measure the overall heating level of all power cables and functional cables in the prefabricated cable duct, including communication optical cables, weak current cables, power cables, etc. The fan is turned on and off when the air temperature is higher or lower than the set value, thereby improving the heat dissipation effect and use safety of the prefabricated cable duct. It can be understood that in other embodiments, if functional cable ducts and power cable ducts are provided in the prefabricated cable duct at the same time, the power cable temperature and air temperature can also be collected at the same time as the first parameter, and the fan can be turned on or off based on the comparison results of the power cable temperature and air temperature with the corresponding parameter values, thereby further improving the efficiency and effectiveness of the fan heat dissipation control.

[0025] In another embodiment, if no other functional cables are provided, the temperature (conductor temperature) of any power cable in the prefabricated cable duct can be collected by optical fiber temperature measurement, or the average temperature can be calculated after collecting the temperatures of all power cables. When the temperature of any power cable or the average power cable temperature is higher than the set value, the fan is controlled to further improve the heat dissipation effect and safety of use of the prefabricated cable duct.

[0026] In a preferred embodiment, the second parameter value includes at least one or more of the ambient temperature, the power load, the installation position of the fan in the air duct, the setting distance of the adjacent prefabricated cable ducts, the type of cooling medium in the heat dissipation duct, and the number of power cable ducts, heat dissipation ducts and / or functional cable ducts in the prefabricated cable duct. Specifically, the ambient temperature and the power load will affect the heat generation of each power cable / functional cable, and the number of power cable ducts and functional cable ducts will affect the overall heat generation inside the prefabricated cable duct. At the same time, the installation position of the fan in the air duct, the setting distance of the adjacent prefabricated cable ducts, the number of heat dissipation ducts and the type of cooling medium in the heat dissipation duct, etc. will also affect the heat dissipation efficiency inside the prefabricated cable duct, including the heat dissipation effect of heat exchange with the external air. Therefore, different fan on or off temperatures need to be set under different second parameter values ​​to improve the heat dissipation efficiency and effect. It can be understood that the above-mentioned corresponding fan on condition and / or fan off condition generated according to the second parameter value is specifically: Obtaining a first heating value of the power cables in the power cable conduit and a second heating value of the functional cables in the functional cable conduit under power load, and generating a total heating value of the prefabricated cable conduit; Querying a preset mapping relationship table, and generating a corresponding warning value according to the numerical range of the total heat value; generating an influence coefficient corresponding to the second parameter value according to a preset multiple linear regression model, and updating the warning value based on the influence coefficient; Generate corresponding fan start conditions and / or fan shut-off conditions based on the updated warning value. Specifically, in step 3, when the first parameter value meets any of the following fan start conditions, control the fan to start; The air temperature in the prefabricated cable duct is greater than a first warning value; The temperature of any power cable in the prefabricated cable conduit is greater than the second warning value; The average temperature of all power cables in the prefabricated cable conduit is greater than a third warning value; The air temperature in the prefabricated cable duct rises at a rate greater than a fourth warning value.

[0027] When the first parameter value satisfies any of the following fan shutdown conditions, the fan is controlled to be shut down: The air temperature in the prefabricated cable duct is lower than the fifth warning value; The temperature of any power cable in the prefabricated cable conduit is lower than the sixth warning value; The average temperature of all power cables in the prefabricated cable conduit is less than the seventh warning value.

[0028] The first through seventh warning values ​​described above can all be generated based on a preset multiple linear regression model. It will be appreciated that a multiple linear regression model is a regression analysis method in statistics. This embodiment employs a multiple linear regression model to establish a linear relationship between multiple independent variables (i.e., the second parameter values ​​described above) and a dependent variable (i.e., the heat dissipation efficiency of the prefabricated cable duct, i.e., the temporal variation of the air temperature within the prefabricated cable duct or the temperature of the power cable). Specifically, historical data on the temperature changes of any power cable or air temperature after the prefabricated cable conduit is laid is first collected, and the historical heat dissipation efficiency of the prefabricated cable conduit is calculated. This heat dissipation efficiency is then associated with the corresponding second parameter value. The associated data is then selected, sorted, and standardized, and an initial multivariate linear regression model is constructed. This model uses methods such as the least squares method to estimate model parameters. Finally, the model parameters are optimized through multiple iterations until a preset convergence condition is reached. This allows the comprehensive impact of the above second parameter values ​​(mainly including the installation position of the fan in the air duct, the installation distance between adjacent prefabricated cable conduits, the number of heat dissipation ducts, the type of cooling medium in the heat dissipation ducts, etc.) on the heat dissipation efficiency within the prefabricated cable conduit to be determined. Based on the actual second parameter value, a reasonable heat dissipation efficiency is obtained and a corresponding influence coefficient is set according to the numerical range of the heat dissipation efficiency. Based on the influence coefficient, the warning value is updated to further improve the effectiveness and efficiency of the fan heat dissipation control. The specific model construction method has been discussed in other fields and related technical documents and will not be described in detail here.

[0029] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0030] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the heat dissipation control method for the prefabricated cable duct described above is implemented.

[0031] Figure 3 Schematic diagram of the heat dissipation control device for the prefabricated cable duct provided in Example 3. Figure 3 As shown, it includes an acquisition module 100, a condition generation module 200 and a control module 300. The acquisition module 100 is used to acquire a first parameter value, wherein the first parameter value includes the air temperature and / or the power cable temperature in the prefabricated cable duct; The condition generation module 200 is used to obtain a second parameter value and generate a corresponding fan on condition and / or fan off condition according to the second parameter value; The control module 300 is configured to determine whether the first parameter value satisfies the fan on condition or the fan off condition, and control the on and off of the fan according to the determination result.

[0032] The above embodiment provides a heat dissipation control device for a prefabricated cable duct. An air duct and a fan are provided in the prefabricated cable duct. By flexibly setting the on and off conditions of the fan, the power cable in the duct laying mode can be timely cooled. Not only is the heat dissipation effect good, but the current carrying capacity and transmission efficiency of the power cable are significantly improved. At the same time, the temperature of the operating status of each cable can be monitored, which is safer to use and easier to promote and apply in the power industry.

[0033] In a preferred embodiment, the condition generation module 200 specifically includes: an acquiring unit, configured to acquire a first heating value of the power cables in the power cable conduit and a second heating value of the functional cables in the functional cable conduit under power load, and generate a total heating value of the prefabricated cable conduit; A query unit, configured to query a preset mapping relationship table and generate a corresponding warning value according to a numerical range of the total heat value; an optimization unit, configured to generate an influence coefficient corresponding to the second parameter value according to a preset multiple linear regression model, and update the warning value based on the influence coefficient; A generating unit is configured to generate corresponding fan on-conditions and / or fan off-conditions according to the updated warning value.

[0034] An embodiment of the present invention also provides a heat dissipation control device for a prefabricated cable duct, comprising a computer-readable storage medium and a processor. When the processor executes the computer program on the computer-readable storage medium, the processor implements the steps of the heat dissipation control method for the prefabricated cable duct described above.

[0035] Figure 4 Schematic diagram of the heat dissipation control device of the prefabricated cable duct provided in Example 4 of the present invention. Figure 4 As shown, the heat dissipation control device 8 for the prefabricated cable conduit of this embodiment includes: a processor 80, a readable storage medium 81, and a computer program 82 stored in the readable storage medium 81 and executable on the processor 80. When the processor 80 executes the computer program 82, the steps in the above-mentioned various method embodiments are implemented, such as Figure 2 Alternatively, when the processor 80 executes the computer program 82, the functions of the modules in the above-mentioned device embodiments are realized, for example Figure 3 Functionality of the modules shown.

[0036] Exemplarily, the computer program 82 may be divided into one or more modules, which are stored in the readable storage medium 81 and executed by the processor 80 to implement the present invention. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program 82 in the heat dissipation control device 8 for the prefabricated cable conduit.

[0037] The heat dissipation control device 8 of the prefabricated cable conduit may include, but is not limited to, a processor 80 and a readable storage medium 81. It will be understood by those skilled in the art that Figure 4 It is only an example of the heat dissipation control device 8 for the prefabricated cable duct and does not constitute a limitation on the heat dissipation control device 8 for the prefabricated cable duct. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the heat dissipation control device for the prefabricated cable duct may also include a power management module, an operation processing module, input and output devices, network access devices, a bus, etc.

[0038] The processor 80 may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0039] The readable storage medium 81 can be an internal storage unit of the prefabricated cable conduit heat dissipation control device 8, such as a hard drive or memory within the prefabricated cable conduit heat dissipation control device 8. The readable storage medium 81 can also be an external storage device within the prefabricated cable conduit heat dissipation control device 8, such as a plug-in hard drive, Smart Media Card (SMC), Secure Digital (SD) card, Flash Card, etc. Furthermore, the readable storage medium 81 can include both the internal storage unit and an external storage device within the prefabricated cable conduit heat dissipation control device 8. The readable storage medium 81 is used to store the computer program and other programs and data required by the prefabricated cable conduit heat dissipation control device. The readable storage medium 81 can also be used to temporarily store data that has been output or is about to be output.

[0040] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0041] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0042] Those skilled in the art will appreciate that the units and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0043] In the embodiments provided by the present invention, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are merely illustrative. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0044] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0045] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0046] The present invention is not limited to what is described in the specification and embodiments, and additional advantages and modifications will be readily apparent to those skilled in the art. Therefore, the present invention is not limited to the specific details, representative devices, and illustrative examples shown and described herein without departing from the spirit and scope of the general concept defined by the claims and their equivalents.

Claims

1. A prefabricated cable duct, characterized in that: The prefabricated cable duct includes a concrete duct body, an air duct passing through the concrete duct body, and several groups of power cable pipes arranged parallel to the air duct. The several groups of power cable pipes are evenly distributed around the air duct in the concrete duct body, and a fan is provided in the air duct.

2. The prefabricated cable duct according to claim 1, characterized in that: The air duct is arranged at the center of the concrete pipe body. The concrete pipe body is also provided with multiple groups of heat dissipation pipes and / or multiple groups of functional cable pipes that are parallel to and pass through the concrete pipe body. The multiple groups of heat dissipation pipes and / or multiple groups of functional cable pipes are evenly distributed around the air duct and are staggered with the power cable pipes.

3. The prefabricated cable duct according to claim 2, characterized in that: A cooling medium is passed into the heat dissipation pipe.

4. A heat dissipation control method for a prefabricated cable duct, based on the prefabricated cable duct according to any one of claims 1 to 3, characterized in that: The heat dissipation control method comprises the following steps: Step 1: collecting a first parameter value, where the first parameter value includes the air temperature and / or the power cable temperature in the prefabricated cable duct; Step 2: obtaining a second parameter value, and generating a corresponding fan on condition and / or fan off condition according to the second parameter value; Step 3: determine whether the first parameter value meets the fan on condition or the fan off condition, and control the on and off of the fan according to the determination result.

5. The heat dissipation control method of the prefabricated cable duct according to claim 4, characterized in that: Obtain a judgment result of whether a functional cable duct is set in the prefabricated cable duct. If not, collect the power cable temperature as the first parameter value; if so, collect the air temperature and the power cable temperature as the first parameter value.

6. The heat dissipation control method for prefabricated cable ducts according to claim 4, characterized in that: The second parameter value includes at least one or more of the ambient temperature, power load, installation position of the fan in the air duct, setting distance between adjacent prefabricated cable ducts, type of cooling medium in the heat dissipation duct, and number of power cable ducts, heat dissipation ducts and / or functional cable ducts in the prefabricated cable duct.

7. The heat dissipation control method for prefabricated cable ducts according to claim 4, characterized in that: Generate corresponding fan on condition and / or fan off condition according to the second parameter value, specifically: Obtaining a first heating value of the power cables in the power cable conduit and a second heating value of the functional cables in the functional cable conduit under power load, and generating a total heating value of the prefabricated cable conduit; Querying a preset mapping relationship table, and generating a corresponding warning value according to the numerical range of the total heat value; generating an influence coefficient corresponding to the second parameter value according to a preset multiple linear regression model, and updating the warning value based on the influence coefficient; The corresponding fan on condition and / or fan off condition is generated according to the updated warning value.

8. The heat dissipation control method for prefabricated cable ducts according to claim 7, characterized in that: In step 3, when the first parameter value satisfies any of the following fan start-up conditions, the fan is controlled to be turned on; The air temperature in the prefabricated cable duct is greater than a first warning value; The temperature of any power cable in the prefabricated cable conduit is greater than the second warning value; The average temperature of all power cables in the prefabricated cable conduit is greater than a third warning value; The air temperature in the prefabricated cable duct increases at a rate greater than a fourth warning value; In step 3, when the first parameter value satisfies any of the following fan shutdown conditions, the fan is controlled to be shut down: The air temperature in the prefabricated cable duct is lower than the fifth warning value; The temperature of any power cable in the prefabricated cable conduit is lower than the sixth warning value; The average temperature of all power cables in the prefabricated cable conduit is less than the seventh warning value.

9. A heat dissipation control device for a prefabricated cable duct, characterized in that: Including acquisition module, condition generation module and control module, The acquisition module is used to acquire a first parameter value, wherein the first parameter value includes the air temperature and / or the power cable temperature in the prefabricated cable duct; The condition generation module is used to obtain a second parameter value and generate a corresponding fan start condition and / or fan shut-down condition according to the second parameter value; The control module is used to determine whether the first parameter value meets the fan on condition or the fan off condition, and control the on and off of the fan according to the determination result.

10. The heat dissipation control device for the prefabricated cable duct according to claim 9, characterized in that: The condition generation module specifically includes: an acquiring unit, configured to acquire a first heating value of the power cables in the power cable conduit and a second heating value of the functional cables in the functional cable conduit under power load, and generate a total heating value of the prefabricated cable conduit; A query unit, configured to query a preset mapping relationship table and generate a corresponding warning value according to a numerical range of the total heat value; an optimization unit, configured to generate an influence coefficient corresponding to the second parameter value according to a preset multiple linear regression model, and update the warning value based on the influence coefficient; A generating unit is configured to generate corresponding fan on-conditions and / or fan off-conditions according to the updated warning value.

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