A switch cabinet internal temperature monitoring device and use method thereof
By integrating monitoring and control modules and adjustment mechanisms in the switch cabinet, using temperature and current data analysis to adaptively adjust the ventilation system, the problem of inaccurate judgment of ventilation system faults in the existing technology is solved, and more accurate temperature monitoring and heat dissipation are achieved Effect.
Patent Information
- Application Number
- CN202411247388.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2044-09-06
AI Technical Summary
The existing switch cabinet temperature monitoring system cannot accurately judge the ventilation system failure, resulting in inaccurate judgment of busbar temperature, which increases the complexity of misjudgment and maintenance.
A temperature monitoring device inside the switch cabinet is designed, including a monitoring control module, ventilation system and adjustment mechanism. The busbar and ambient temperature data are obtained through the current transformer, wireless temperature sensor and electronic thermometer, and the busbar state is determined by using the temperature analysis formula. , and adaptively adjust the ventilation system air volume through an electric regulating valve to ensure the heat dissipation effect.
It improves the heat dissipation effect of the ventilation system, reduces misjudgment, enhances accurate monitoring and control of the internal temperature of the switch cabinet, and reduces the complexity of maintenance.
Smart Images
Figure CN118763524B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of temperature monitoring, and in particular to a switch cabinet internal temperature monitoring device and a use method thereof. Background Art
[0002] A switchgear is an electrical device that is mainly used to control, protect, and measure power systems and distribute power as needed. The switchgear seals electrical-related equipment in a shell, which is generally a metal shell. During use, the switchgear is controlled by staff to open and close to ensure the normal operation of the electrical equipment.
[0003] In a patent document entitled "A high-voltage switch cabinet temperature monitoring system and method" with a publication number of CN111256876B, the system includes: a current transformer CT arranged on the busbar in the switch cabinet, a first wireless temperature sensor arranged on the busbar in the switch cabinet, an intelligent temperature measurement and dehumidification device arranged on the inner wall of the switch cabinet, and a field monitoring host and server; the intelligent temperature measurement and dehumidification device is provided with a second wireless temperature measurement sensor and a humidity sensor; in the document, by monitoring the busbar current and the internal temperature, the two variables of the busbar temperature and the internal temperature are combined for comparative analysis, so as to judge whether the switch cabinet has busbar aging, equipment damage, etc., but the switch cabinet is also integrated with a ventilation and heat dissipation system, including conveying and ventilation pipes. In the patent document, the busbar condition is judged only based on the change in current, and it is impossible to judge whether the temperature of the busbar is affected by a failure of the ventilation system. The judgment result is inaccurate, which increases the possibility of misjudgment and the complexity of maintenance. Summary of the invention
[0004] The purpose of the present invention is to solve the problems in the background technology and to propose a switch cabinet internal temperature monitoring device and a use method thereof.
[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a switch cabinet internal temperature monitoring device, comprising a switch cabinet body, wherein a monitoring control module is arranged in the switch cabinet body, and the monitoring control module comprises a temperature detection control unit and an image detection control unit;
[0006] The temperature detection control unit obtains the busbar current I and the busbar temperature T respectively through the first monitoring mechanism, performs data analysis on the busbar current and the busbar temperature to obtain a first analysis result, implements a control scheme and a detection scheme for the ventilation system according to the first analysis result, and determines the state of the busbar;
[0007] The switch cabinet body is provided with a ventilation system and a regulating mechanism for regulating the ventilation system. The temperature detection control unit monitors the ambient temperature in the cabinet through the second monitoring mechanism, performs data analysis on the ambient temperature in the cabinet at different positions, obtains a second analysis result, and adaptively adjusts the regulating mechanism according to the second analysis result to control the air volume entering the switch cabinet body;
[0008] The switch cabinet body is provided with three cabinet areas, which are an upper cabinet, a middle cabinet and a lower cabinet respectively. The first monitoring mechanism includes a current transformer arranged on the busbar in the upper cabinet and a wireless temperature sensor fixedly installed on the inner wall of the cabinet door of the upper cabinet corresponding to the position of the busbar. The current transformer is used to detect the magnitude of the current passing through the busbar. The cabinet door of the upper cabinet is provided with an electronic display screen. The second monitoring mechanism includes three electronic thermometers. The inner walls of the three upper cabinets, the middle cabinet and the lower cabinet are all fixedly provided with electronic thermometers. The three electronic thermometers are used to obtain the cabinet ambient temperatures of the upper cabinet, the middle cabinet and the lower cabinet respectively.
[0009] The processing steps of the temperature detection control unit include:
[0010] Obtain the detected busbar temperature T and busbar current I;
[0011] By temperature processing formula: ;
[0012] The temperature analysis value A is calculated, and T0 is the standard temperature. The temperature analysis value A is analyzed. If the temperature analysis value A is not greater than 1.1, the busbar temperature is judged to be normal and a continuous monitoring tag is generated. If the temperature analysis value A is greater than 1.1 and less than 1.5, the busbar temperature is judged to be slightly abnormal and a control tag is generated. If the temperature analysis value A is not less than 1.5, the busbar temperature is judged to be severely abnormal and a statistical tag is generated.
[0013] The control tag is used to control the implementation of the control scheme. After the control scheme is implemented, the control temperature analysis value A is traced and analyzed. If the control temperature analysis value A is not greater than 1.1, the busbar is judged to be normal and a control valid tag is generated; if the control temperature analysis value A is still greater than 1.1, a control invalid tag is generated;
[0014] The statistical label is used to mark the control temperature analysis value A as the severe abnormal monitoring value Aj, where j is the number corresponding to different control temperature analysis values, j={1, 2, 3, ...}; the total number of all severe abnormal monitoring values that appear on the day is analyzed; if the total number of severe abnormal monitoring values is not greater than 10, the busbar is judged to be normal; if the total number of severe abnormal monitoring values is greater than 10, the busbar is judged to be aged and a record label is generated, indicating that it needs to be replaced; if the temperature analysis value A is greater than 1.5, it is necessary to implement the control plan or the detection plan first to eliminate the problem of the ventilation system. If the ventilation system operates normally, it indicates that the busbar is aged;
[0015] The recording tag is used to obtain the detection current I corresponding to the severe abnormal monitoring value Aj and mark it as the abnormal detection current Ik, where k is the number corresponding to different detection currents I, k={1, 2, 3, ...}, and the minimum abnormal detection current Imin among the abnormal detection currents Ik is obtained according to the linear search algorithm, and the minimum abnormal detection current Imin is set as the dangerous current. When the subsequent detection current I reaches the dangerous current Imin, an alarm is initiated;
[0016] The control invalid tag is used to control the implementation of the detection plan, and conduct a secondary traceability analysis on the control temperature analysis value A after the implementation of the detection plan. If the control temperature analysis value A is not greater than 1.5, it is determined that the ventilation system is blocked and prompts for maintenance; if the temperature analysis value A is still greater than 1.5, it is determined that the ventilation system is faulty and prompts for maintenance;
[0017] The effective control tag is used to control and maintain the operating power of the ventilation system; the invalid control tag is used to control the implementation of the detection plan, and conduct a secondary traceback analysis on the control temperature analysis value A after the implementation of the detection plan. If the control temperature analysis value A is not greater than 1.1 and less than 1.5, it is determined that the ventilation system is blocked; if the temperature analysis value A is still greater than 1.5, it is determined that the ventilation system is faulty;
[0018] The standard temperature T0 is updated in units of weeks. The standard monitoring temperature Tc obtained by detecting the busbar when the busbar reaches the standard current I0 every time within a week is collected. The standard temperature T0 is obtained by averaging all the standard monitoring temperatures Tc, and the standard temperature T0 is compared with the initial standard temperature T0 to obtain the standard temperature increase ratio q. If q is greater than 1.2, the busbar is judged to be aged, a record label is generated, and a prompt is given that it needs to be replaced.
[0019] The continuous monitoring tag is used to control and maintain the monitoring of the temperature and current of the busbar, and calculate and analyze the busbar temperature T and busbar current I obtained subsequently through the temperature processing formula; the control temperature analysis value A is obtained by calculating the detection data after the implementation of the control scheme through the temperature processing formula according to the control tag or the statistical tag, and the control scheme or the detection scheme is implemented respectively;
[0020] The current transformer, wireless temperature sensor, electronic thermometer and thermal imaging camera are connected to the monitoring host through wireless technology. The monitoring host uploads the data to the server. The server is provided with a monitoring and analysis module. The data is analyzed by the monitoring and analysis module and returned to the electronic display screen to display the analysis results.
[0021] In the above-mentioned internal temperature monitoring device of a switch cabinet, the ventilation system includes an L-shaped fan assembly, a main pipe, and two branch pipes connected to the main pipe. Air inlet slots corresponding to the upper cabinet, the middle cabinet and the lower cabinet are respectively arranged in the switch cabinet body, and air outlet slots are arranged at the cabinet doors of the upper cabinet, the middle cabinet and the lower cabinet. The adjustment mechanism includes two electric regulating valves arranged on the branch pipes.
[0022] In the above-mentioned internal temperature monitoring device of a switch cabinet, a slide rail assembly is arranged in the switch cabinet body, and the slide rail assembly is arranged on the outside of the air outlet slots of the middle cabinet and the lower cabinet. The slide rail assembly includes a slide rail 1 with an inverted U-shaped structure arranged on the inner wall of the cabinet door of the middle cabinet and two symmetrical slide rails 2 arranged on the inner wall of the cabinet door of the lower cabinet. The two ends of the slide rail 1 are flush with the lower surface of the cabinet door of the middle cabinet, and the installation positions of the two slide rails 2 correspond to the two ends of the slide rail 1. The tops of the two slide rails 2 are flush with the upper surface of the cabinet door of the lower cabinet, and the bottoms of the two slide rails 2 are blocked. The slide rails 1 are connected to the channels of the slide rails 2, and a thermal imaging unit is slidably arranged on the slide rail 1.
[0023] In the above-mentioned internal temperature monitoring device of a switch cabinet, the thermal imaging unit includes a moving mechanism and a thermal imaging camera. The moving mechanism slides in slide rails one and two. The moving mechanism includes a slider with a circular structure, a mounting structure installed on the slider, a driving component arranged on the mounting structure, and a rack arranged on the outside of the slide rail assembly. The thermal imaging camera is installed on the mounting structure, and the thermal imaging camera is used to collect thermal images inside the middle cabinet and the lower cabinet.
[0024] In the above-mentioned switch cabinet internal temperature monitoring device, the image detection control unit is used to obtain thermal images of the middle cabinet and the lower cabinet through a thermal imaging camera, perform image analysis on the thermal images at different positions, obtain the monitoring temperature information of the connection points in the middle cabinet and the lower cabinet, and upload it to the server;
[0025] The current transformer, wireless temperature sensor, electronic thermometer and thermal imaging camera are connected to the monitoring host through wireless technology. The monitoring host uploads the data to the server. The server is provided with a monitoring and analysis module. The monitoring and analysis module analyzes the data and returns the analysis results to the electronic display screen.
[0026] The switch cabinet body is provided with a transformer, and the wireless temperature sensor, the electronic thermometer, the driving component and the thermal imaging camera are all connected to the transformer;
[0027] The wireless temperature sensor uploads the detected temperature of the busbar to the electronic display screen, and the three electronic thermometers upload the temperatures of the three cabinet areas to the electronic display screen respectively.
[0028] In addition, the present invention also discloses a method for using a switch cabinet internal temperature monitoring device, and the specific steps are as follows:
[0029] S1. Debugging current: adjust the busbar current to the median value of the full-load current, use the median current to test the busbar, obtain the busbar temperature at different time periods of the day through the wireless temperature sensor, and obtain the standard temperature through the average calculation;
[0030] S2. Check the ventilation system: Check the main pipe and branch pipes to avoid failure of the ventilation system to dissipate heat in the switch cabinet body 1, and ensure that the air volume is not reduced due to blockage of the ventilation system;
[0031] S3. Debug the main duct air volume: obtain the busbar temperature, debug the valve port size of the electric control valve, and ensure that the busbar temperature is the same in different time periods during the above S1 current debugging process.
[0032] Compared with the prior art, the advantages of the present invention are:
[0033] 1. The temperature of the busbar is obtained through the wireless temperature sensor. The ventilation system drives the air flow into the cabinet through the air inlet slot and leaves the cabinet through the air outlet slot to take away the heat from the inside of the switch cabinet, thereby maintaining the temperature balance inside the switch cabinet.
[0034] 2. The servo motor drives the gears to rotate, and the thermal imaging unit moves back and forth along the slide rail assembly, so that the movement range of the thermal imaging camera covers the middle cabinet and the lower cabinet, which is convenient for the thermal imaging camera to move dynamically and continuously obtain thermal imaging images.
[0035] 3. The air volume distribution of the upper cabinet, middle cabinet and lower cabinet is controlled by the electric regulating valve, so that the operation process of the switch cabinet can be adequately heat-dissipated and the heat-dissipating effect of the ventilation system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0036] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.
[0037] Figure 2 It is a schematic cross-sectional structural diagram of the switch cabinet body of the present invention.
[0038] Figure 3 It is a planar structural schematic diagram of the slide rail assembly and the thermal imaging unit of the present invention.
[0039] Figure 4 It is a schematic cross-sectional structural diagram of the air inlet notch of the present invention.
[0040] Figure 5 It is a schematic cross-sectional structural diagram of the thermal imaging unit of the present invention.
[0041] Figure 6 It is a monitoring control flow chart of the present invention.
[0042] In the figure: 1. switch cabinet body; 101. upper cabinet; 102. middle cabinet; 103. lower cabinet; 104. air inlet slot; 105. air outlet slot; 2. current transformer; 3. wireless temperature sensor; 4. electronic display screen; 5. electronic thermometer; 6. fan assembly; 7. main pipe; 701. branch pipe; 702. electric regulating valve; 801. slide rail 1; 802. slide rail 2; 803. rack; 9. thermal imaging unit; 901. thermal imaging camera; 902. slider; 903. mounting structure; 904. drive component; 10. transformer. DETAILED DESCRIPTION
[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0044] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0045] Example 1: Reference Figure 1-Figure 5A switch cabinet internal temperature monitoring device comprises a switch cabinet body 1, wherein the switch cabinet body 1 is provided with three cabinet areas, namely an upper cabinet 101, a middle cabinet 102 and a lower cabinet 103. A current transformer 2 connected to a busbar is provided in the switch cabinet body 1 and located in the upper cabinet 101. The current transformer 2 is used to detect the magnitude of the current passing through the busbar. A wireless temperature measuring sensor 3 corresponding to the position of the busbar is fixedly installed on the inner wall of the cabinet door of the upper cabinet 101. An electronic display screen 4 is provided at the cabinet door of the upper cabinet 101. Electronic thermometers 5 are fixedly provided on the inner walls of the upper cabinet 101, the middle cabinet 102 and the lower cabinet 103. The three electronic thermometers 5 are used to obtain the cabinet ambient temperatures of the upper cabinet 101, the middle cabinet 102 and the lower cabinet 103 respectively. The wireless temperature measuring sensor 3 uploads the detected busbar temperature to the electronic display screen 4. The three electronic The thermometer 5 uploads the temperatures of the three cabinet areas to the electronic display screen 4 respectively. A ventilation system for heat dissipation is arranged in the switch cabinet body 1. The ventilation system includes an L-shaped fan assembly 6, a main pipe 7, and two branch pipes 701 connected to the main pipe 7. The switch cabinet body 1 is respectively provided with air inlet slots 104 corresponding to the upper cabinet 101, the middle cabinet 102 and the lower cabinet 103. The cabinet doors of the upper cabinet 101, the middle cabinet 102 and the lower cabinet 103 are all provided with air outlet slots 105. The two branch pipes 701 correspond to the middle cabinet 102 and the lower cabinet 103 respectively. The current on the busbar is detected by the current transformer 2, and the temperature of the busbar is obtained by the wireless temperature sensor. The ventilation system drives the airflow into the cabinet through the air inlet slot 104, and leaves the cabinet through the air outlet slot 105 to take away the heat from the inside of the switch cabinet, thereby achieving the effect of temperature control.
[0046] A slide rail assembly is arranged in the switch cabinet body 1, and the slide rail assembly includes a slide rail 1 801 with an inverted U-shaped structure arranged on the inner wall of the cabinet door of the middle cabinet 102 and two symmetrical slide rails 2 802 arranged on the inner wall of the cabinet door of the lower cabinet 103. The two ends of the slide rail 1 801 are flush with the lower surface of the cabinet door of the middle cabinet 102, and the installation positions of the two slide rails 2 802 correspond to the two ends of the slide rail 1 801. The tops of the two slide rails 2 802 are flush with the upper surface of the cabinet door of the lower cabinet 103, and the bottoms of the two slide rails 2 802 are blocked. The slide rail 1 801 is connected to the channel of the slide rail 2 802. A thermal imaging unit 9 is slidably arranged on the slide rail 1 801. The thermal imaging unit 9 moves along the slide rail assembly to facilitate the acquisition of the temperature of the components in the middle cabinet 102 and the lower cabinet 103, and further monitor the temperature in the switch cabinet.
[0047] The thermal imaging unit 9 includes a moving mechanism and a thermal imaging camera 901. The moving mechanism slides in the slide rail 1 801 and the slide rail 2 802. The moving mechanism includes a slider 902 with a circular structure, a mounting structure 903 mounted on the slider 902, a driving component 904 arranged on the mounting structure 903, and a rack 803 arranged on the outside of the slide rail assembly. The thermal imaging camera 901 is installed on the mounting structure 903. The thermal imaging camera 901 is used to collect thermal images in the middle cabinet 102 and the lower cabinet 103. The driving component 904 is a servo motor and a gear, wherein the gear is meshed with the rack 803, and the gear is driven to rotate by the servo motor. The thermal imaging unit 9 reciprocates along the slide rail assembly on the slide rail assembly, so that the moving range of the thermal imaging camera 901 covers the middle cabinet 102 and the lower cabinet 103, which is convenient for the thermal imaging camera 901 to move dynamically and obtain thermal imaging images.
[0048] The two branch pipes 701 are both provided with electric regulating valves 702 , and the air volume introduced into the middle cabinet 102 and the lower cabinet 103 by the ventilation system is adjusted by adjusting the electric regulating valves 702 .
[0049] The slide rail assembly is arranged outside the air outlet slots 105 of the middle cabinet 102 and the lower cabinet 103 to avoid affecting the air exhaust of the middle cabinet 102 and the lower cabinet 103 .
[0050] The current transformer 2, wireless temperature sensor, electronic thermometer 5 and thermal imaging camera are connected to the monitoring host through wireless technology. The monitoring host uploads the data to the server. The server is equipped with a monitoring and analysis module. The data is analyzed by the monitoring and analysis module and returned to the electronic display screen 4 to display the analysis results.
[0051] A transformer 10 is provided in the switch cabinet body 1 , and the wireless temperature sensor, the electronic thermometer 5 , the driving component 904 and the thermal imaging camera 901 are all connected to the transformer 10 , and the transformer 10 is used to power the above-mentioned electronic devices.
[0052] In addition, the present invention also discloses a method for using a switch cabinet internal temperature monitoring device, and the specific steps are as follows:
[0053] S1. Debugging current: adjust the busbar current to the median value of the full-load current, use the median current to test the busbar, obtain the busbar temperature at different time periods of the day through the wireless temperature sensor, and obtain the standard temperature through the average calculation;
[0054] S2. Check the ventilation system: Check the main pipe 7 and the branch pipe 701 to avoid failure of the ventilation system to dissipate heat in the switch cabinet body 1, and ensure that the air volume is not reduced due to blockage of the ventilation system;
[0055] S3. Debug the air volume of main pipe 7: obtain the busbar temperature, debug the valve port size of the electric regulating valve 702, and ensure that the busbar temperature is the same in different time periods during the above S1 current debugging process.
[0056] Example 2: Reference Figure 6 , a monitoring control module is provided in the switch cabinet body 1, and the monitoring control module includes a temperature detection control unit and an image detection control unit;
[0057] The temperature detection control unit is used to obtain the busbar current I and the busbar temperature T through the current transformer 2 and the wireless temperature sensor respectively, perform data analysis on the busbar current and the busbar temperature to obtain a first analysis result, implement a control plan and a detection plan for the ventilation system according to the first analysis result, and determine the state of the busbar; and, respectively monitor the cabinet ambient temperature of the upper cabinet 101, the middle cabinet 102 and the lower cabinet 103 through different electronic thermometers 5, perform data analysis on the cabinet ambient temperature at different positions to obtain a second analysis result, and adaptively adjust the electric regulating valve 702 according to the second analysis result to control the air volume entering the upper cabinet 101, the middle cabinet 102 and the lower cabinet 103; wherein, adaptively performing proportional calculation according to the ambient temperature obtained by different electronic thermometers 5 to obtain a calculation result, and adjusting the operating power of the ventilation system and the air volume entering the corresponding cabinet according to the calculation result is a prior art and will not be repeated here;
[0058] The image detection control unit is used to obtain thermal images in the middle cabinet 102 and the lower cabinet 103 through the thermal imaging camera 901, perform image analysis on the thermal images at different positions, obtain the monitoring temperature information of the connection points in the middle cabinet 102 and the lower cabinet 103, and upload it to the server;
[0059] The processing steps of the temperature detection control unit include:
[0060] Obtain the detected busbar temperature T and busbar current I;
[0061] By temperature processing formula: ;
[0062] The temperature analysis value A is calculated, and T0 is the standard temperature. The temperature analysis value A is analyzed. If the temperature analysis value A is not greater than 1.1, the busbar temperature is judged to be normal and a continuous monitoring tag is generated. If the temperature analysis value A is greater than 1.1 and less than 1.5, the busbar temperature is judged to be slightly abnormal and a control tag is generated. If the temperature analysis value A is not less than 1.5, the busbar temperature is judged to be severely abnormal and a statistical tag is generated.
[0063] The standard temperature T0 is updated in units of weeks. The standard monitoring temperature Tc obtained by detecting the busbar when the busbar reaches the standard current I0 every time within a week is collected. The standard temperature T0 is obtained by averaging all the standard monitoring temperatures Tc, and the standard temperature T0 is compared with the initial standard temperature T0 to obtain the standard temperature increase ratio q. If q is greater than 1.2, the busbar is judged to be aged, a record label is generated, and a replacement prompt is given.
[0064] Maintain monitoring of the busbar temperature and current according to the continuous monitoring tag, and calculate and analyze the subsequently obtained busbar temperature T and busbar current I through the temperature processing formula; calculate the control temperature analysis value A obtained by the temperature processing formula for the detection data after the implementation of the control scheme according to the control tag or statistical tag, and implement the control scheme or detection scheme respectively;
[0065] The specific implementation steps of the regulation plan are as follows:
[0066] Adjust the channel sizes of the two electric regulating valves 702 to adjust the air volume entering the upper cabinet 101; when implementing the adjustment plan, obtain the control temperature analysis value A;
[0067] By formula: ;
[0068] The regulated air volume f of the ventilation system entering the upper cabinet 101 is calculated; f0 is the initial air volume entering the upper cabinet 101 according to the initial adaptive adjustment;
[0069] The specific implementation steps of the detection plan are:
[0070] Close the electric regulating valves 702 on the two branch pipes 701, and adjust the air volume of the ventilation system input to the upper cabinet 101 to the rated output air volume;
[0071] Implement the control plan according to the control label. After the control plan is implemented, perform a traceback analysis on the control temperature analysis value A. If the control temperature analysis value A is not greater than 1.1, the busbar is judged to be normal and a control effective label is generated; if the control temperature analysis value A is still greater than 1.1, a control invalid label is generated; maintain the air volume entering the upper cabinet 101, the middle cabinet 102 and the lower cabinet 103 of the ventilation system according to the control effective label;
[0072] According to the statistical label, the control temperature analysis value A is marked as the severe abnormal monitoring value Aj, where j is the number corresponding to different control temperature analysis values, j={1, 2, 3, ...}; the total number of all severe abnormal monitoring values that appear on the day is analyzed; if the total number of severe abnormal monitoring values is not greater than 10, the busbar is judged to be normal; if the total number of severe abnormal monitoring values is greater than 10, the busbar is judged to be aged and a record label is generated, indicating that it needs to be replaced; if the temperature analysis value A is greater than 1.5, it is necessary to implement the control plan or the detection plan first to eliminate the problem of the ventilation system. If the ventilation system operates normally, it indicates that the busbar is aged; further, if the temperature analysis value A on the day exceeds the set total number of severe abnormal monitoring values 10, it also indicates that the busbar has an aging problem and needs to be repaired;
[0073] According to the record tag, the detection current I corresponding to the severe abnormal monitoring value Aj is obtained and marked as the abnormal detection current Ik, where k is the number corresponding to different detection currents I, k={1, 2, 3, ...}, and the minimum abnormal detection current Imin among the abnormal detection currents Ik is obtained according to the linear search algorithm, and the minimum abnormal detection current Imin is set as the dangerous current. When the subsequent detection current I reaches the dangerous current Imin, an alarm is initiated; wherein the linear search algorithm is an existing search technology and will not be described in detail here;
[0074] Implement the detection plan according to the invalid control label, and conduct a secondary traceability analysis on the control temperature analysis value A after the implementation of the detection plan. If the control temperature analysis value A is not greater than 1.5, the ventilation system is determined to be blocked and a maintenance prompt is given; if the temperature analysis value A is still greater than 1.5, the ventilation system is determined to be faulty and a maintenance prompt is given;
[0075] Maintain the operating power of the ventilation system according to the effective control label; implement the detection plan according to the invalid control label, and conduct a secondary traceability analysis on the control temperature analysis value A after the implementation of the detection plan. If the control temperature analysis value A is not greater than 1.1 and less than 1.5, the ventilation system is determined to be blocked; if the temperature analysis value A is still greater than 1.5, the ventilation system is determined to be faulty.
[0076] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.
[0077] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A switch cabinet internal temperature monitoring device, comprising a switch cabinet body (1), characterized in that: The switch cabinet body (1) is provided with a monitoring control module, the monitoring control module comprising a temperature detection control unit and an image detection control unit; The temperature detection control unit obtains the busbar current I and the busbar temperature T respectively through the first monitoring mechanism, performs data analysis on the busbar current and the busbar temperature to obtain a first analysis result, implements a control scheme and a detection scheme for the ventilation system according to the first analysis result, and determines the state of the busbar; The switch cabinet body is provided with a ventilation system and a regulating mechanism for regulating the ventilation system, the temperature detection control unit monitors the ambient temperature in the cabinet through a second monitoring mechanism, performs data analysis on the ambient temperature in the cabinet at different positions, obtains a second analysis result, and adaptively adjusts the regulating mechanism according to the second analysis result to control the air volume entering the switch cabinet body (1); The switch cabinet body (1) is provided with three cabinet areas, the three cabinet areas are an upper cabinet (101), a middle cabinet (102) and a lower cabinet (103), a first monitoring mechanism comprises a current transformer (2) arranged on a busbar in the upper cabinet (101) and a wireless temperature measuring sensor (3) fixedly installed on the inner wall of the cabinet door of the upper cabinet (101) and corresponding to the position of the busbar, the current transformer (2) is used to detect the magnitude of the current passing through the busbar, an electronic display screen (4) is provided on the cabinet door of the upper cabinet (101), and a second monitoring mechanism comprises three electronic thermometers (5), the inner walls of the three upper cabinets (101), the middle cabinet (102) and the lower cabinet (103) are all fixedly provided with electronic thermometers (5), and the three are used to obtain the cabinet environment temperature of the upper cabinet (101), the middle cabinet (102) and the lower cabinet (103) respectively; The processing steps of the temperature detection control unit include: Obtain the detected busbar temperature T and busbar current I; By temperature processing formula: ; The temperature analysis value A is calculated, and T0 is the standard temperature. The temperature analysis value A is analyzed. If the temperature analysis value A is not greater than 1.1, the busbar temperature is judged to be normal and a continuous monitoring tag is generated. If the temperature analysis value A is greater than 1.1 and less than 1.5, the busbar temperature is judged to be slightly abnormal and a control tag is generated. If the temperature analysis value A is not less than 1.5, the busbar temperature is judged to be severely abnormal and a statistical tag is generated. The control tag is used to control the implementation of the control scheme. After the control scheme is implemented, the control temperature analysis value A is traced and analyzed. If the control temperature analysis value A is not greater than 1.1, the busbar is judged to be normal and a control valid tag is generated; if the control temperature analysis value A is still greater than 1.1, a control invalid tag is generated; The statistical label is used to mark the control temperature analysis value A as the severe abnormal monitoring value Aj, where j is the number corresponding to different control temperature analysis values, j={1, 2, 3, ...}; the total number of all severe abnormal monitoring values that appear on the day is analyzed; if the total number of severe abnormal monitoring values is not greater than 10, the busbar is judged to be normal; if the total number of severe abnormal monitoring values is greater than 10, the busbar is judged to be aged and a record label is generated, indicating that it needs to be replaced; if the temperature analysis value A is greater than 1.5, it is necessary to implement the control plan or the detection plan first to eliminate the problem of the ventilation system. If the ventilation system operates normally, it indicates that the busbar is aged; The recording tag is used to obtain the detection current I corresponding to the severe abnormal monitoring value Aj and mark it as the abnormal detection current Ik, where k is the number corresponding to different detection currents I, k={1, 2, 3, ...}, and the minimum abnormal detection current Imin among the abnormal detection currents Ik is obtained according to the linear search algorithm, and the minimum abnormal detection current Imin is set as the dangerous current. When the subsequent detection current I reaches the dangerous current Imin, an alarm is initiated; The control invalid tag is used to control the implementation of the detection plan, and conduct a secondary traceability analysis on the control temperature analysis value A after the implementation of the detection plan. If the control temperature analysis value A is not greater than 1.5, it is determined that the ventilation system is blocked and prompts for maintenance; if the temperature analysis value A is still greater than 1.5, it is determined that the ventilation system is faulty and prompts for maintenance; The effective control tag is used to control and maintain the operating power of the ventilation system; the invalid control tag is used to control the implementation of the detection plan, and conduct a secondary traceback analysis on the control temperature analysis value A after the implementation of the detection plan. If the control temperature analysis value A is not greater than 1.1 and less than 1.5, it is determined that the ventilation system is blocked; if the temperature analysis value A is still greater than 1.5, it is determined that the ventilation system is faulty; The standard temperature T0 is updated in units of weeks. The standard monitoring temperature Tc obtained by detecting the busbar when the busbar reaches the standard current I0 every time within a week is collected. The standard temperature T0 is obtained by averaging all the standard monitoring temperatures Tc, and the standard temperature T0 is compared with the initial standard temperature T0 to obtain the standard temperature increase ratio q. If q is greater than 1.2, the busbar is judged to be aged, a record label is generated, and a prompt is given that it needs to be replaced. The continuous monitoring tag is used to control and maintain the monitoring of the busbar temperature and current, and to calculate and analyze the subsequently obtained busbar temperature T and busbar current I through the temperature processing formula; the control temperature analysis value A is obtained by calculating the detection data after the implementation of the control scheme through the temperature processing formula according to the control tag or statistical tag, and the control scheme or detection scheme is implemented respectively.
2. A switch cabinet internal temperature monitoring device according to claim 1, characterized in that: The ventilation system comprises an L-shaped fan assembly (6), a main pipe (7), and two branch pipes (701) connected to the main pipe (7); air inlet slots (104) corresponding to the upper cabinet (101), the middle cabinet (102), and the lower cabinet (103) are respectively arranged in the switch cabinet body (1); air outlet slots (105) are arranged at the cabinet doors of the upper cabinet (101), the middle cabinet (102), and the lower cabinet (103); and the regulating mechanism comprises two electric regulating valves (702) arranged on the branch pipes (701).
3. A switch cabinet internal temperature monitoring device according to claim 2, characterized in that: A slide rail assembly is arranged in the switch cabinet body (1), and the slide rail assembly is arranged on the outer sides of the air outlet slots (105) of the middle cabinet (102) and the lower cabinet (103). The slide rail assembly comprises a slide rail 1 (801) with an inverted U-shaped structure arranged on the inner wall of the cabinet door of the middle cabinet (102) and two symmetrical slide rails 2 (802) arranged on the inner wall of the cabinet door of the lower cabinet (103). The two ends of the slide rail 1 (801) are flush with the lower surface of the cabinet door of the middle cabinet (102). The installation positions of the two slide rails 2 (802) correspond to the two ends of the slide rail 1 (801). The tops of the two slide rails 2 (802) are flush with the upper surface of the cabinet door of the lower cabinet (103). The bottoms of the two slide rails 2 (802) are both blocked. The slide rail 1 (801) is connected to the channel of the slide rail 2 (802). A thermal imaging unit (9) is slidably arranged on the slide rail 1 (801).
4. A switch cabinet internal temperature monitoring device according to claim 3, characterized in that: The thermal imaging unit (9) comprises a moving mechanism and a thermal imaging camera (901); the moving mechanism slides within a first slide rail (801) and a second slide rail (802); the moving mechanism comprises a slider (902) of a circular structure, a mounting structure (903) mounted on the slider (902), a driving component (904) disposed on the mounting structure (903), and a rack (803) disposed on the outside of the slide rail assembly; the thermal imaging camera (901) is mounted on the mounting structure (903); and the thermal imaging camera (901) is used to collect thermal images within the middle cabinet (102) and the lower cabinet (103).
5. A switch cabinet internal temperature monitoring device according to claim 4, characterized in that: The image detection control unit is used to obtain thermal images of the middle cabinet (102) and the lower cabinet (103) through a thermal imaging camera (901), perform image analysis on the thermal images at different positions, obtain monitoring temperature information of the connection points in the middle cabinet (102) and the lower cabinet (103), and upload the information to a server; The current transformer (2), wireless temperature sensor, electronic thermometer (5) and thermal imaging camera are connected to a monitoring host via wireless technology, and the monitoring host uploads data to a server. A monitoring and analysis module is provided in the server, and the data is analyzed by the monitoring and analysis module and returned to the electronic display screen (4) to display the analysis results; A transformer (10) is arranged in the switch cabinet body (1), and the wireless temperature sensor, the electronic thermometer (5), the drive component (904) and the thermal imaging camera (901) are all connected to the transformer (10); The wireless temperature measurement sensor (3) uploads the detected temperature of the busbar to the electronic display screen (4), and the three electronic thermometers (5) upload the temperatures of the three cabinet areas to the electronic display screen (4) respectively.
6. A method for using a switch cabinet internal temperature monitoring device, using the switch cabinet internal temperature monitoring device as described in claim 5, characterized in that: The following steps are involved: S1. Debugging current: adjust the busbar current to the median value of the full-load current, use the median current to test the busbar, obtain the busbar temperature at different time periods of the day through the wireless temperature sensor, and obtain the standard temperature through the average calculation; S2. Check the ventilation system: Check the main pipe (7) and the branch pipe (701) to prevent the switch cabinet body (1) from being unable to dissipate heat due to a ventilation system failure, and to ensure that the air volume is not reduced due to a blockage in the ventilation system; S3. Debug the air volume of the main pipe (7): obtain the busbar temperature, debug the valve port size of the electric control valve (702), and ensure that the busbar temperature is the same in different time periods during the above S1 current debugging process.