GIS control cubicle capable of intelligently monitoring and regulating temperature and detection method of GIS control cubicle

Abstract

The invention discloses a GIS control cubicle capable of intelligently monitoring, regulating and controlling temperature and a detection method thereof, and relates to the technical field of GIS control cubicles, the GIS control cubicle comprises a GIS element cabin and an intelligent control cabin, the intelligent control cabin is fixedly installed on the outer wall of the GIS element cabin, a wiring terminal is arranged on the side face of the outer wall of the GIS element cabin, the wiring terminal is connected with an access point of the intelligent control cabin, and the intelligent control cabin is connected with the GIS element cabin. The access point is arranged on the side face of the outer wall, close to the GIS element cabin, of the intelligent control cabin. Through the intelligent control cabin, the temperature of the GIS control cubicle is intelligently monitored, regulated and controlled, the problem of inaccurate temperature control of the control cubicle is solved, stable and efficient operation of the GIS control cubicle is guaranteed, the operation and maintenance cost and the safety risk are reduced, and powerful support is provided for reliable operation of a power system.

Description

Technical Field

[0001] The present invention relates to the technical field of GIS control cabinets, and in particular to a GIS control cabinet with intelligent temperature monitoring and control and a detection method thereof. Background Art

[0002] GIS control cabinet is a control and monitoring device for gas-insulated fully enclosed combined electrical appliances. It is mainly used to control the operation of circuit breakers, disconnectors, earthing switches, etc. in GIS equipment, and monitor the operating status of these equipment. GIS control cabinets are widely used in power system places such as substations and converter stations. In substations, it is a key device for realizing power distribution, control and protection. Since the GIS equipment itself is fully enclosed and its internal status cannot be directly observed, the control cabinet becomes an important interface between the operator and the GIS equipment, which plays a vital role in ensuring the stable operation of the power system and the reliability of power supply.

[0003] The electrical components inside some control cabinets are installed compactly, the components in the corners are difficult to maintain, and there is a lack of structural design that is easy to repair. The internal structure layout is not optimized, resulting in low space utilization. As the functions increase, it is difficult to accommodate more equipment and lines, limiting its scalability and upgrade potential. The insulation capacity of the ST6 gas used in GIS equipment is greatly affected by the uniformity of the electric field. When there are sharp points or foreign objects inside, insulation abnormalities are prone to occur. SF6 gas is a greenhouse gas. Once leaked, it will have a great impact on the environment. In addition, some control cabinets have poor insulation, moisture-proof and dust-proof performance in harsh outdoor environments such as high cold, high humidity, and strong winds and sand, which affects the normal operation and life of internal components.

[0004] Therefore, it is very necessary for the present application to propose a GIS control cabinet with intelligent temperature monitoring and control and a detection method thereof to solve the problems in the background.

[0005] 1. Patent document CN106602414B discloses an outdoor GIS control cabinet. The above patent saves space in the intelligent control cabinet, shortens delivery time, and meets the on-site "plug and play" requirements. However, the above patent cannot realize intelligent monitoring and control of the temperature of the GIS control cabinet.

[0006] 2. Patent document CN112018620B discloses a control cabinet for GIS equipment and GIS equipment using the control cabinet. The above patent realizes that when the external ambient temperature reaches the starting temperature of the controller, the controller accurately starts to control the heating device to heat the GIS shell, but the above patent cannot realize the accurate collection of temperature changes by using the compensation mechanism.

[0007] 3. Patent document CN117013418B discloses a high-voltage switch GIS monitoring device with a safety protection structure. The above patent not only adjusts the use position of the anti-leakage component according to the different locations of the leakage points, thereby increasing the applicable scope of the anti-leakage component, but the above patent cannot effectively regulate the internal temperature of the GIS control cabinet and prevent the cabinet from being corroded by external influences.

[0008] 4. Patent document CN113253038B discloses an online monitoring device and method for the integrated alarm unit of substation GIS equipment. The above patent realizes online monitoring of whether the operation of the integrated alarm unit is abnormal, and is convenient for directly modifying and installing the existing integrated alarm unit. The installation in the GIS equipment control cabinet can be completed by fixing with screws and performing simple snap-on wiring. The process is simple, but the above patent cannot achieve accurate positioning of abnormal temperature points of components.

[0009] In summary, the above patents cannot realize intelligent monitoring and control of the temperature of the GIS control cabinet, accurately collect temperature changes using compensation mechanisms, accurately locate abnormal temperature points of components, effectively regulate the internal temperature of the GIS control cabinet, and prevent the cabinet from being damaged by external influences. As a result, the temperature control of the control cabinet is not accurate, and the temperature changes in the cabinet cannot be obtained in time. It is difficult to fully and intuitively grasp the temperature distribution status in the cabin by relying solely on conventional temperature sensors, and the control cabinet is easily damaged by temperature imbalance and harsh environments. To this end, the present application proposes a GIS control cabinet and its detection method that can realize intelligent monitoring and control of the temperature of the GIS control cabinet, accurately collect temperature changes using a compensation mechanism, accurately locate abnormal temperature points of components, effectively regulate the internal temperature of the GIS control cabinet, and prevent the cabinet from being damaged by external influences. Summary of the invention

[0010] The purpose of the present invention is to provide a GIS control cabinet with intelligent temperature monitoring and control and a detection method thereof, so as to solve the technical problems proposed in the above background technology that the temperature of the GIS control cabinet cannot be intelligently monitored and controlled, the temperature changes can be accurately collected by using a compensation mechanism, the abnormal temperature points of components can be accurately located, the internal temperature of the GIS control cabinet can be effectively adjusted, and the cabinet body can be prevented from being corroded by external influences, resulting in inaccurate temperature control of the control cabinet, inability to obtain temperature changes in the cabinet in time, difficulty in fully and intuitively grasping the temperature distribution state in the cabin by relying solely on conventional temperature sensors, and temperature imbalance in the control cabinet and easy damage in harsh environments.

[0011] To achieve the above object, the present invention provides the following technical solutions: a GIS control cabinet for intelligent temperature monitoring and control, comprising a GIS component cabin and an intelligent control cabin, wherein the outer wall of the GIS component cabin is fixedly mounted with the intelligent control cabin, and the side of the outer wall of the GIS component cabin is provided with a wiring terminal, the wiring terminal is connected to an access point of the intelligent control cabin, and the access point is provided on the side of the outer wall of the intelligent control cabin close to the GIS component cabin; The intelligent control cabin includes a temperature sensing module and an intelligent control module. The temperature sensing module is fixedly installed on the side of the connection between the mutual inductor, circuit breaker and busbar inside the GIS component cabin. The temperature sensing module is also fixedly installed on the top of the inner wall of the intelligent control cabin. The temperature sensing module is uploaded to the intelligent control module via a data cable. The temperature sensing module includes a thermistor, a platinum resistor and an analog front-end chip. The thermistor and the platinum resistor are combined to form a temperature-sensitive composite. The outer wall of the temperature-sensitive composite is wrapped with a packaging plate, and the packaging plate is formed by compressing an aluminum nitride substrate inside a thermally conductive gasket. The output end of the platinum resistor is connected to a signal conditioning circuit No. 1, and the signal conditioning circuit No. 1 is connected to a resistance measurement channel of the analog front-end chip. The thermistor is connected to a capacitance measurement circuit, and the capacitance measurement circuit is connected to a signal conditioning circuit No. 2, and the signal conditioning circuit No. 2 is connected to a capacitance measurement channel of the analog front-end chip. The digital communication interface of the analog front-end chip wirelessly transmits the temperature signal to the intelligent control module.

[0012] Preferably, an auxiliary temperature control cavity is fixedly installed on the upper half of the side of the outer wall of the GIS component cabin, and the bottom end of the outer wall of the auxiliary temperature control cavity is fixedly installed on the top of the outer wall of the GIS component cabin. The auxiliary temperature control cavity includes an evaporator, a condenser and a circulating air duct. The evaporator and the condenser are respectively connected to the circulating air duct through a copper tube, and the circulating air duct is constructed inside the auxiliary temperature control cavity; The air inlet of the circulating air duct is fixedly penetrated through the top of the auxiliary temperature control cavity, the air outlet of the circulating air duct is fixedly penetrated through the side of the auxiliary temperature control cavity, the evaporator is fixedly installed at the air inlet of the circulating air duct, the condenser is fixedly installed at the air outlet of the circulating air duct, and the inner walls of the air inlet, air outlet and circulating air duct branch are fixedly installed with dampers, the rotating shaft of the damper is connected to the output shaft of the electric actuator through a coupling, the quantity output interface of the intelligent control module is connected to the control input end of the electric actuator through a control cable, the outer shell of the auxiliary temperature control cavity adopts a double-layer metal structure, the middle of the outer shell is filled with heat insulation cotton, and a layer of reflective heat insulation film is pasted on the inner wall of the auxiliary temperature control cavity.

[0013] Preferably, the intelligent control module includes an infrared detector, a monitoring display screen and a signal processing unit. The infrared detector is fixedly installed on the top of the inner wall of the GIS component cabin. An inclined V-shaped groove is provided on the front of the outer wall of the GIS component cabin. The monitoring display screen is embedded in the V-shaped groove. The output digital interface of the infrared detector is connected to the input digital interface of the signal processing unit. The output interface of the signal processing unit is connected to the data acquisition card of the microprocessor of the auxiliary device. The output end of the data acquisition card is connected to the monitoring display screen. The power supply lines of the infrared detector and the signal processing unit are connected to the DC power supply system of the GIS component cabin.

[0014] Preferably, a distributed controller is fixedly installed on the middle end of the inner wall of the intelligent control cabin, and a regional microprocessor is arranged inside the distributed controller. The regional microprocessor includes an auxiliary device microprocessor, a temperature and humidity control microcontroller and a communication microcontroller. A temperature and humidity control microcontroller is fixedly installed on the top of the outer wall of the auxiliary device microprocessor, and a communication microcontroller is fixedly installed on the top of the outer wall of the temperature and humidity control microcontroller. The auxiliary device microprocessor, the temperature and humidity control microcontroller and the communication microcontroller are connected through the Internet of Things, the communication microcontroller is connected to the remote monitoring terminal through wireless communication, and the temperature and humidity control microcontroller has an embedded self-learning algorithm.

[0015] Preferably, the output pin of the analog front-end chip is connected to a comparison circuit, the comparison circuit is connected to an auxiliary device microprocessor, the auxiliary device microprocessor is connected to a current limiting component via a data line, and the current limiting component is connected to the anode of the indicator light.

[0016] Preferably, the remote monitoring terminal is connected to the driving display chip of the monitoring display screen through the Internet of Things, a two-way communication interface is established between the driving display chip and the temperature and humidity control microcontroller, the output end of the temperature and humidity control microcontroller is connected to the comparison circuit, the temperature sensor module is connected to the power control circuit of the evaporator and the condenser through a data line, and the intelligent control module is wired to the auxiliary device microprocessor.

[0017] Preferably, the outer shell of the GIS component cabin and the intelligent control cabin is made of double-layer stainless steel, the interior of the stainless steel is filled with rock wool boards, and the outer surface of the stainless steel is coated with anti-ultraviolet dressings. Ventilation holes are arranged on the side of the shell of the GIS component cabin, and electric baffles are arranged at the vents. The main control line of the electric baffles is connected to the output end of the temperature-sensitive complex. A drain plate is arranged at the rear end of the shell of the GIS component cabin, and the drain plate is opened downward at 45°.

[0018] Preferably, a cable wiring area is provided at the bottom of the inner wall of the GIS component cabin, an isolation plate is fixedly installed at the bottom of the outer wall of the cable wiring area, and an overhead bracket is fixedly installed at the bottom of the outer wall of the isolation plate; A semiconductor refrigeration plate is installed inside the cable distribution area. The semiconductor refrigeration plate is connected to power electronic devices to form a driving circuit. The driving circuit is connected to the output end of the temperature and humidity control microcontroller. The relay circuit is connected in series with a heating wire. The control end of the relay is connected to the output end of the temperature and humidity control microcontroller. The optical cable distribution area adopts a modular design, and a temperature and humidity threshold control algorithm is set inside the temperature and humidity control microcontroller.

[0019] Preferably, the detection method comprises the following steps: S1. The temperature sensor module is fixedly installed on the side of the connection between the transformer, circuit breaker and busbar inside the GIS component compartment and on the top of the inner wall of the intelligent control compartment; S2, the thermistor and platinum resistor in the temperature-sensitive complex sense the change of ambient temperature, the output end of the platinum resistor is connected to the No. 1 signal conditioning circuit, the thermistor is connected to the capacitance measurement circuit, and the capacitance measurement signal is processed. The No. 1 and No. 2 signal conditioning circuits transmit the processed resistance and capacitance signals to the analog front-end chip respectively, and the analog front-end chip converts the analog signal into a digital signal and transmits it wirelessly to the intelligent control module through the digital communication interface; S3, the temperature and humidity control microcontroller sends a command to the electric actuator through the control cable, and the electric actuator drives the rotating shaft of the damper through the coupling to control the opening of the damper, and the air flow in the circulating air duct increases or decreases accordingly; S4, infrared detector monitors the GIS component cabin, transmits the temperature change data in the GIS component cabin to the signal processing unit, and monitors the internal components of the display screen to process the digital signal and convert it into image display temperature data.

[0020] Preferably, the detection method further comprises the following steps: S31, the evaporator and the condenser are connected to the circulating air duct through copper pipes; S32, the temperature and humidity control microcontroller is connected to the driving circuit of the semiconductor refrigeration chip, and the self-learning algorithm embedded in the temperature and humidity control microcontroller optimizes the temperature control circuit according to historical data and real-time monitoring results; S41. The DC power supply system of the GIS component compartment is connected to the power supply line of the infrared detector and the signal processing unit. When the temperature sensor module detects that the temperature of the GIS component compartment rises abnormally, it automatically triggers the GIS component to enter the safety protection mode to prevent equipment damage; the output pin of the analog front-end chip is connected to the comparison circuit, and the auxiliary device microprocessor is connected to the anode of the indicator light through the current limiting component. When the threshold range is exceeded, the comparison circuit outputs an alarm trigger signal to drive the indicator light to light up.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses the intelligent control cabin to realize intelligent monitoring and control of the temperature of the GIS control cabinet, solves the problem of inaccurate temperature control of the control cabinet, ensures the stable and efficient operation of the GIS control cabinet, reduces operation and maintenance costs and safety risks, and provides strong support for the reliable operation of the power system; 2. The present invention uses a temperature-sensitive complex to accurately collect temperature changes using a compensation mechanism, solving the problem of not being able to obtain temperature changes in the cabinet in a timely manner, ensuring that each component in the cabinet is in a suitable temperature environment, improving equipment operation stability, and reducing potential faults caused by abnormal temperature; 3. The present invention uses an auxiliary temperature control cavity and an overhead bracket to effectively adjust the internal temperature of the GIS control cabinet and prevent the cabinet from being damaged by external influences, thereby solving the problem of temperature imbalance in the control cabinet and easy damage in harsh environments, maintaining the internal environment of the control cabinet in a suitable temperature range, ensuring the stable operation of internal components, and improving the operating reliability of the entire GIS control cabinet; 4. The present invention uses infrared detectors to accurately locate abnormal temperature points of components, solving the problem that it is difficult to fully and intuitively grasp the temperature distribution status in the cabin by relying solely on conventional temperature sensors, and assisting the intelligent control module to make more reasonable and effective temperature control decisions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a side structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the structure of the distributed controller of the present invention; Figure 4 It is a schematic diagram of the structure of the cable distribution area of ​​the present invention; Figure 5 It is a schematic diagram of the structure of the drain plate and the vent of the present invention; Figure 6 It is a schematic diagram of the auxiliary temperature control cavity structure of the present invention; Figure 7 It is a schematic diagram of the structure of the temperature-sensitive complex of the present invention.

[0023] In the figure: 1. GIS component cabin; 2. Intelligent control cabin; 3. Auxiliary temperature control cavity; 4. Evaporator; 5. Condenser; 6. Circulating air duct; 7. Air inlet; 8. Air outlet; 9. Damper; 10. Isolation plate; 11. Overhead bracket; 12. Aluminum nitride substrate; 13. Thermal conductive gasket; 14. Packaging board; 15. Analog front-end chip; 16. Temperature sensitive complex; 17. Electric actuator; 18. Infrared detector; 19. Monitoring display screen; 20. V-groove; 21. Indicator light; 22. Distributed controller; 23. Auxiliary device microprocessor; 24. Temperature and humidity control microcontroller; 25. Communication microcontroller; 26. Drain board; 27. Ventilation port; 28. Cable wiring area; 29. ​​Semiconductor refrigeration plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1 , Figure 6 and Figure 7An embodiment of the present invention is a GIS control cabinet for intelligent temperature monitoring and control, wherein the detection method comprises the following steps: S1, fixing the temperature sensor module on the side of the connection between the transformer, circuit breaker and busbar inside the GIS component compartment 1 and the top of the inner wall of the intelligent control compartment 2; S2, the thermistor and platinum resistor in the temperature-sensitive complex 16 sense the change of ambient temperature, the output end of the platinum resistor is connected to the No. 1 signal conditioning circuit, the thermistor is connected to the capacitance measurement circuit, the capacitance measurement signal is processed, and the No. 1 and No. 2 signal conditioning circuits transmit the processed resistance and capacitance signals to the analog front end respectively. Chip 15, analog front-end chip 15 converts analog signals into digital signals, and transmits them wirelessly to the intelligent control module through a digital communication interface; S3, temperature and humidity control microcontroller 24 sends instructions to electric actuator 17 through a control cable, and electric actuator 17 drives the rotating shaft of damper 9 through a coupling to control the opening of damper 9, and the air flow in the circulating air duct 6 increases or decreases accordingly; S4, infrared detector 18 monitors GIS component cabin 1, transmits temperature change data in GIS component cabin 1 to the signal processing unit, and monitors the internal components of display screen 19 to process digital signals and convert them into image display temperature data; The detection method further comprises the following steps: S31, the evaporator 4 and the condenser 5 are connected to the circulating air duct 6 through a copper tube; S32, the temperature and humidity control microcontroller 24 is connected to the driving circuit of the semiconductor refrigeration plate 29, and the self-learning algorithm embedded in the temperature and humidity control microcontroller 24 optimizes the temperature control circuit according to historical data and real-time monitoring results; S41, the DC power supply system of the GIS component compartment 1 is connected to the power supply circuit of the infrared detector 18 and the signal processing unit, and when the temperature sensor module detects that the temperature of the GIS component compartment 1 is abnormally increased, the GIS component is automatically triggered to enter the safety protection mode to prevent equipment damage; the output pin of the analog front-end chip 15 is connected to the comparison circuit, and the auxiliary device microprocessor 23 is connected to the anode of the indicator light 21 through the current limiting component. When the threshold range is exceeded, the comparison circuit outputs an alarm trigger signal to drive the indicator light 21 to light up; Furthermore, the temperature sensor module is fixedly installed on the side of the connection between the transformer, circuit breaker and busbar inside the GIS component cabin 1 using a fixed bracket and shockproof materials. At the same time, the sensor module is installed on the top of the inner wall of the intelligent control cabin 2 to monitor the temperature changes in the control cabin; The thermistor outputs a capacitance signal, and the platinum resistor outputs a resistance signal. The output end of the platinum resistor is connected to a signal conditioning circuit No. 1 to perform preliminary processing of the resistance signal. The thermistor is connected to a capacitance measurement circuit to process the capacitance measurement signal. The signal conditioning circuits No. 1 and No. 2 transmit the processed resistance and capacitance signals to the analog front-end chip 15, respectively. The signal conditioning circuit No. 1 amplifies and filters the weak signal output by the platinum resistor. The signal conditioning circuits No. 1 and No. 2 transmit the signal to the analog front-end chip 15. The analog front-end chip 15 converts the analog signal into a digital signal, which is wirelessly transmitted to the intelligent control module through a digital communication interface. The temperature and humidity control microcontroller 24 receives the temperature data from the intelligent control module, sends instructions to the electric actuator 17 through the control cable, and after receiving the instructions, drives the rotating shaft of the damper 9 through the coupling to achieve precise opening and closing of the damper. As the opening degree of the damper 9 changes, the air flow in the circulating air duct 6 automatically increases or decreases, thereby achieving automatic temperature regulation. The temperature and humidity control microcontroller 24 is connected to the drive circuit of the semiconductor refrigeration plate 29 to assist in regulating the temperature.

[0028] See also Figure 1 , Figure 2 and Figure 7 , an embodiment provided by the present invention: a GIS control cabinet for intelligent temperature monitoring and control, comprising a GIS component cabin 1 and an intelligent control cabin 2, wherein the outer wall of the GIS component cabin 1 is fixedly mounted with the intelligent control cabin 2, and the side of the outer wall of the GIS component cabin 1 is provided with a wiring terminal, the wiring terminal is connected to the access point of the intelligent control cabin 2, and the access point is arranged on the side of the outer wall of the intelligent control cabin 2 close to the GIS component cabin 1; the intelligent control cabin 2 comprises a temperature sensing module and an intelligent control module, the temperature sensing module is fixedly mounted on the side of the connection between the mutual inductor, the circuit breaker and the busbar inside the GIS component cabin 1, the temperature sensing module is also fixedly mounted on the top of the inner wall of the intelligent control cabin 2, and the temperature sensing module is uploaded to the intelligent control module via a data cable; The intelligent control module includes an infrared detector 18, a monitoring display screen 19 and a signal processing unit. The infrared detector 18 is fixedly installed on the top of the inner wall of the GIS component cabin 1. An inclined V-shaped groove 20 is provided on the front of the outer wall of the GIS component cabin 1. The monitoring display screen 19 is embedded in the V-shaped groove 20. The output digital interface of the infrared detector 18 is connected to the input digital interface of the signal processing unit. The output interface of the signal processing unit is connected to the data acquisition card of the auxiliary device microprocessor 23. The output end of the data acquisition card is connected to the monitoring display screen 19. The power supply lines of the infrared detector 18 and the signal processing unit are connected to the DC power supply system of the GIS component cabin 1. The output pin of the analog front-end chip 15 is connected to the comparison circuit, the comparison circuit is connected to the auxiliary device microprocessor 23, the auxiliary device microprocessor 23 is connected to the current limiting component through the data line, and the current limiting component is connected to the anode of the indicator light 21; Furthermore, a wiring terminal is provided on the side of the outer wall of the GIS component cabin 1 for connecting to the access point of the intelligent control cabin 2. The access point is located on the side of the outer wall of the intelligent control cabin 2 close to the GIS component cabin 1 to ensure the stability and reliability of signal transmission; The output digital interface of the infrared detector 18 is connected to the input digital interface of the signal processing unit, the output interface of the signal processing unit is connected to the data acquisition card of the auxiliary device microprocessor 23, the output end of the data acquisition card is connected to the monitoring display screen 19 to ensure the real-time display of data, the infrared detector 18 and the signal processing unit are connected to the DC power supply system of the GIS component cabin 1 through the power supply line, the output pin of the analog front-end chip 15 is connected to the comparison circuit, the comparison circuit is further connected to the auxiliary device microprocessor 23, the auxiliary device microprocessor 23 is connected to the current limiting component through the data line, the current limiting component controls the anode of the indicator light 21, indicating the working status or alarm information of the system; The temperature sensing module collects temperature data of key positions in the GIS component cabin 1 in real time, and uploads it to the intelligent control module through the data line. The infrared detector 18 monitors the thermal radiation in the cabin at the same time and provides auxiliary temperature data. The signal processing unit receives the digital signal from the infrared detector 18, transmits it to the auxiliary device microprocessor 23 after preliminary processing, and the auxiliary device microprocessor 23 sends the processed data to the monitoring display screen 19 through the data acquisition card for the operator to view in real time. If abnormal temperature is detected, the system can automatically start the control measures, start the condenser and send out an alarm signal.

[0029] See also Figure 1 , Figure 4 and Figure 7 , an embodiment provided by the present invention: a GIS control cabinet for intelligent temperature monitoring and control, the temperature sensing module comprises a thermistor, a platinum resistor and an analog front-end chip 15, the thermistor and the platinum resistor are combined to form a temperature-sensitive composite body 16, the outer wall of the temperature-sensitive composite body 16 is wrapped with a packaging plate 14, the packaging plate 14 is formed by compressing an aluminum nitride substrate 12 inside a thermally conductive gasket 13, the output end of the platinum resistor is connected to a signal conditioning circuit No. 1, the signal conditioning circuit No. 1 is connected to the resistance measurement channel of the analog front-end chip 15, the thermistor is connected to the capacitance measurement circuit, the capacitance measurement circuit is connected to a signal conditioning circuit No. 2, the signal conditioning circuit No. 2 is connected to the capacitance measurement channel of the analog front-end chip 15, and the digital communication interface of the analog front-end chip 15 wirelessly transmits the temperature signal to the intelligent control module; An auxiliary temperature control cavity 3 is fixedly installed on the upper half of the side of the outer wall of the GIS component cabin 1, and the bottom end of the outer wall of the auxiliary temperature control cavity 3 is fixedly installed on the top of the outer wall of the GIS component cabin 1. The auxiliary temperature control cavity 3 includes an evaporator 4, a condenser 5 and a circulating air duct 6. The evaporator 4 and the condenser 5 are respectively connected to the circulating air duct 6 through a copper tube, and the circulating air duct 6 is constructed inside the auxiliary temperature control cavity 3; Furthermore, the temperature sensing module monitors the temperature changes inside the GIS component compartment 1 in real time through thermistors and platinum resistors. The analog front-end chip 15 processes the signals from the No. 1 and No. 2 signal conditioning circuits, and transmits the temperature data to the intelligent control module through the wireless communication interface. The intelligent control module adjusts the working state of the refrigeration system in the auxiliary temperature control cavity 3 in real time according to the received temperature data. When it is detected that the temperature exceeds the preset threshold, the intelligent control module will start the evaporator 4 and the condenser 5, enhance the cooling effect through the circulating air duct 6, and quickly reduce the temperature inside the GIS component compartment 1 to ensure the safe operation of the equipment; The packaging board 14 adopts an aluminum nitride substrate 12, which not only has excellent thermal conductivity, but also has good electrical insulation performance, further improving the reliability of the temperature sensing module 16. The addition of the thermal conductive pad 13 effectively improves the heat conduction efficiency between the temperature sensing module and the GIS component compartment 1, ensuring the accuracy and response speed of temperature monitoring.

[0030] See also Figure 1 , Figure 4 and Figure 7 , an embodiment provided by the present invention: a GIS control cabinet for intelligent temperature monitoring and control, wherein a distributed controller 22 is fixedly installed at the middle end of the inner wall of the intelligent control cabin 2, and a sub-regional microprocessor is arranged inside the distributed controller 22, and the sub-regional microprocessor includes an auxiliary device microprocessor 23, a temperature and humidity control microcontroller 24 and a communication microcontroller 25, and a temperature and humidity control microcontroller 24 is fixedly installed at the top of the outer wall of the auxiliary device microprocessor 23, and a communication microcontroller 25 is fixedly installed at the top of the outer wall of the temperature and humidity control microcontroller 24. The auxiliary device microprocessor 23, the temperature and humidity control microcontroller 24 and the communication microcontroller 25 are connected through the Internet of Things, the communication microcontroller 25 is connected to the remote monitoring terminal through wireless communication, and the temperature and humidity control microcontroller 24 has a built-in self-learning algorithm; A semiconductor cooling sheet 29 is arranged inside the cable wiring area 28, and the semiconductor cooling sheet 29 is connected to a power electronic device to form a drive circuit, and the drive circuit is connected to the output end of the temperature and humidity control microcontroller 24, and the circuit of the relay is connected in series with a heating wire, and the control end of the relay is connected to the output end of the temperature and humidity control microcontroller 24. The optical cable wiring area adopts a modular design, and a temperature and humidity threshold control algorithm is arranged inside the temperature and humidity control microcontroller 24; The air inlet 7 of the circulating air duct 6 is fixedly passed through the top of the auxiliary temperature control cavity 3, the air outlet 8 of the circulating air duct 6 is fixedly passed through the side of the auxiliary temperature control cavity 3, the evaporator 4 is fixedly installed at the air inlet 7 of the circulating air duct 6, the condenser 5 is fixedly installed at the air outlet 8 of the circulating air duct 6, and the air inlet 7, the air outlet 8 and the inner wall of the branch of the circulating air duct 6 are fixedly installed with a damper 9, the rotating shaft of the damper 9 is connected to the output shaft of the electric actuator 17 through a coupling, the quantity output interface of the intelligent control module is connected to the control input end of the electric actuator 17 through a control cable, the shell of the auxiliary temperature control cavity 3 adopts a double-layer metal structure, the middle of the shell is filled with heat insulation cotton, and a layer of reflective heat insulation film is pasted on the inner wall of the auxiliary temperature control cavity 3; Further, the air is pre-cooled through the evaporator 4 to reduce the temperature of the air entering the system, and the air treated by the condenser 5 is discharged to realize the circulation of the air. The rotating shaft of the damper 9 is connected to the output shaft of the electric actuator 17 through a coupling. The electric actuator 17 is connected by the quantity output interface of the intelligent control module through a control cable, and can automatically adjust the opening and closing degree of the damper according to the instructions of the temperature and humidity control microcontroller 24; A semiconductor cooling sheet 29 is provided inside the cable wiring area 28, and its working state is controlled by a driving circuit. The driving circuit is composed of power electronic devices and is connected to the output end of the temperature and humidity control microcontroller 24. When it is detected that the temperature and humidity exceed the preset threshold, the temperature and humidity control microcontroller 24 will issue an instruction to drive the semiconductor cooling sheet 29 to start cooling or heating to adjust the temperature and humidity of the cable wiring area; The cable wiring area 28 is also provided with a relay circuit, which is connected in series with a heating wire to provide a heating function in a low temperature environment. The control end of the relay is connected to the output end of the temperature and humidity control microcontroller 24 to realize intelligent control of the heating wire. The optical cable wiring area adopts a modular design for easy installation and maintenance. The temperature and humidity control microcontroller 24 is internally provided with a temperature and humidity threshold control algorithm, which can adjust the temperature and humidity parameters of each module according to the needs of different modules to ensure the stable operation of the optical cable wiring area.

[0031] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 , an embodiment provided by the present invention: a GIS control cabinet for intelligent temperature monitoring and control, the shell of the GIS component cabin 1 and the intelligent control cabin 2 is made of double-layer stainless steel, the interior of the stainless steel is filled with rock wool board, and the outer surface of the stainless steel is coated with anti-ultraviolet dressing, a vent 27 is arranged on the side of the shell of the GIS component cabin 1, an electric baffle is arranged at the vent 27, the main control line of the electric baffle is connected to the output end of the temperature-sensitive complex 16, and a drain plate 26 is arranged at the rear end of the shell of the GIS component cabin 1, and the drain plate 26 is open downward at 45°; The bottom end of the inner wall of the GIS component cabin 1 is provided with a cable wiring area 28, the bottom end of the outer wall of the cable wiring area 28 is fixedly installed with an isolation plate 10, and the bottom end of the outer wall of the isolation plate 10 is fixedly installed with an overhead bracket 11; The remote monitoring terminal is connected to the driving display chip of the monitoring display screen 19 through the Internet of Things, and a two-way communication interface is established between the driving display chip and the temperature and humidity control microcontroller 24. The output end of the temperature and humidity control microcontroller 24 is connected to the comparison circuit, the temperature sensor module is connected to the control circuit of the evaporator 4 and the condenser 5 through a data line, and the intelligent control module is connected to the auxiliary device microprocessor 23 by wire; Furthermore, when the GIS control cabinet is started, the temperature and humidity sensor module monitors the temperature and humidity in the cabin in real time. If the temperature rises to the set threshold, the temperature-sensitive complex 16 will send an opening signal to the electric damper to increase the ventilation volume of the vent and reduce the temperature in the cabin. At the same time, the temperature and humidity control microcontroller 24 adjusts the working state of the evaporator 4 and the condenser 5 through the comparison circuit to further adjust the temperature in the cabin. All monitoring data are transmitted to the remote monitoring terminal in real time through the Internet of Things. The operator can view the equipment status through the monitoring display 19 and perform manual intervention when necessary. The drainage system drains the accumulated water in time through the drain plate 26 to ensure that the cabin environment is dry and prevent the equipment from getting damp. The auxiliary device microprocessor 23 and the temperature and humidity control microcontroller 24 monitor the temperature and humidity in the GIS control cabinet in real time. The regional microprocessor transmits the collected data to the communication microcontroller 25 through the Internet of Things, and performs local processing at the same time. The temperature and humidity control microcontroller 24 determines whether it is necessary to start the refrigeration plate 29 or the heating wire according to the built-in self-learning algorithm and the temperature and humidity threshold control algorithm, and controls the operation of the corresponding equipment through the drive circuit and the relay to adjust the internal environment. According to the instructions of the temperature and humidity control microcontroller 24, the electric actuator 17 adjusts the opening and closing degree of the damper 9 to control the air flow in the circulating air duct 6, and further optimizes the temperature and humidity control effect. The communication microcontroller 25 transmits real-time data to the remote monitoring terminal, and the operation and maintenance personnel can view the status in the cabinet through the remote terminal and receive alarm information.

[0032] Working principle: The temperature-sensitive complex 16 converts the collected analog signal into a digital signal through the analog front-end chip 15 through the first signal conditioning circuit, the capacitance measurement circuit and the second signal conditioning circuit, and transmits it to the intelligent control module through the wireless communication interface; After the intelligent control module receives the temperature data, the temperature and humidity control microcontroller 24 operates according to the embedded self-learning algorithm and the temperature and humidity threshold control algorithm. On the one hand, it sends instructions to the electric actuator 17 through the control cable, and the electric actuator 17 drives the evaporator 4 and the damper 9 at the condenser 5 connected to the air inlet 7 and the air outlet 8 of the circulating air duct 6 to rotate, thereby changing the air flow in the circulating air duct 6; on the other hand, for the cable wiring area, the temperature and humidity control microcontroller 24 can control the drive circuit connected to the semiconductor cooling plate 29 and the relay of the series heating wire to maintain the appropriate temperature and humidity in the area, and the entire intelligent control module is connected to the auxiliary device microprocessor 23 through the Internet of Things, and wireless communication is realized with the remote monitoring terminal; The infrared detector 18 monitors the temperature change data in the cabin and transmits it to the signal processing unit. Finally, the temperature data is displayed in the form of an image on the monitoring display screen 19 through the data acquisition card of the auxiliary device microprocessor 23. Moreover, when the temperature rises abnormally, the comparison circuit connected to the output pin of the analog front-end chip 15 will trigger the auxiliary device microprocessor 23, and the indicator light 21 will light up to alarm through the current limiting component; when it exceeds a certain threshold, it will also automatically trigger the GIS component to enter the safety protection mode.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A GIS control cabinet with intelligent temperature monitoring and control, characterized by: The invention comprises a GIS component cabin (1) and an intelligent control cabin (2), wherein the intelligent control cabin (2) is fixedly mounted on the outer wall of the GIS component cabin (1), and a wiring terminal is arranged on the side of the outer wall of the GIS component cabin (1), wherein the wiring terminal is connected to an access point of the intelligent control cabin (2), and the access point is arranged on the side of the outer wall of the intelligent control cabin (2) close to the GIS component cabin (1); The intelligent control cabin (2) comprises a temperature sensing module and an intelligent control module. The temperature sensing module is fixedly mounted on the side of the connection between the mutual inductor, the circuit breaker and the busbar inside the GIS component cabin (1). The temperature sensing module is also fixedly mounted on the top of the inner wall of the intelligent control cabin (2). The temperature sensing module is uploaded to the intelligent control module via a data cable. The temperature sensing module comprises a thermistor, a platinum resistor and an analog front-end chip (15); the thermistor and the platinum resistor are combined to form a temperature-sensitive composite body (16); the outer wall of the temperature-sensitive composite body (16) is wrapped with a packaging plate (14); the packaging plate (14) is formed by compressing an aluminum nitride substrate (12) inside a thermally conductive gasket (13); the output end of the platinum resistor is connected to a No. 1 signal conditioning circuit; the No. 1 signal conditioning circuit is connected to a resistance measurement channel of the analog front-end chip (15); the thermistor is connected to a capacitance measurement circuit; the capacitance measurement circuit is connected to a No. 2 signal conditioning circuit; the No. 2 signal conditioning circuit is connected to a capacitance measurement channel of the analog front-end chip (15); and the digital communication interface of the analog front-end chip (15) wirelessly transmits the temperature signal to the intelligent control module.

2. According to claim 1, a GIS control cabinet for intelligent temperature monitoring and control is characterized in that: An auxiliary temperature control cavity (3) is fixedly mounted on the upper half of the side surface of the outer wall of the GIS component cabin (1); the bottom end of the outer wall of the auxiliary temperature control cavity (3) is fixedly mounted on the top end of the outer wall of the GIS component cabin (1); the auxiliary temperature control cavity (3) comprises an evaporator (4), a condenser (5) and a circulating air duct (6); the evaporator (4) and the condenser (5) are respectively connected to the circulating air duct (6) via copper tubes; and the circulating air duct (6) is constructed inside the auxiliary temperature control cavity (3); The air inlet (7) of the circulating air duct (6) is fixedly penetrated through the top of the auxiliary temperature control cavity (3), the air outlet (8) of the circulating air duct (6) is fixedly penetrated through the side of the auxiliary temperature control cavity (3), the evaporator (4) is fixedly installed at the air inlet (7) of the circulating air duct (6), the condenser (5) is fixedly installed at the air outlet (8) of the circulating air duct (6), the air inlet (7), the air outlet (8) and the inner wall of the branch of the circulating air duct (6) are fixedly installed with a damper (9), the rotating shaft of the damper (9) is connected to the output shaft of the electric actuator (17) through a coupling, the quantity output interface of the intelligent control module is connected to the control input end of the electric actuator (17) through a control cable, the outer shell of the auxiliary temperature control cavity (3) adopts a double-layer metal structure, the middle of the outer shell is filled with heat insulation cotton, and a layer of reflective heat insulation film is pasted on the inner wall of the auxiliary temperature control cavity (3).

3. The GIS control cabinet for intelligent temperature monitoring and control according to claim 1 is characterized in that: The intelligent control module comprises an infrared detector (18), a monitoring display screen (19) and a signal processing unit. The infrared detector (18) is fixedly mounted on the top of the inner wall of the GIS component cabin (1). An inclined V-shaped groove (20) is provided on the front of the outer wall of the GIS component cabin (1). The monitoring display screen (19) is embedded in the V-shaped groove (20). The output digital interface of the infrared detector (18) is connected to the input digital interface of the signal processing unit. The output interface of the signal processing unit is connected to a data acquisition card of an auxiliary device microprocessor (23). The output end of the data acquisition card is connected to the monitoring display screen (19). The power supply lines of the infrared detector (18) and the signal processing unit are connected to the DC power supply system of the GIS component cabin (1).

4. The GIS control cabinet for intelligent temperature monitoring and control according to claim 1 is characterized by: A distributed controller (22) is fixedly installed at the middle end of the inner wall of the intelligent control cabin (2), and a sub-regional microprocessor is arranged inside the distributed controller (22). The sub-regional microprocessor includes an auxiliary device microprocessor (23), a temperature and humidity control microcontroller (24) and a communication microcontroller (25). A temperature and humidity control microcontroller (24) is fixedly installed at the top end of the outer wall of the auxiliary device microprocessor (23), and a communication microcontroller (25) is fixedly installed at the top end of the outer wall of the temperature and humidity control microcontroller (24). The auxiliary device microprocessor (23), the temperature and humidity control microcontroller (24) and the communication microcontroller (25) are connected via the Internet of Things, the communication microcontroller (25) is connected to the remote monitoring terminal via wireless communication, and the temperature and humidity control microcontroller (24) has a built-in self-learning algorithm.

5. The GIS control cabinet for intelligent temperature monitoring and control according to claim 1 is characterized in that: The output pin of the analog front-end chip (15) is connected to a comparison circuit, the comparison circuit is connected to an auxiliary device microprocessor (23), the auxiliary device microprocessor (23) is connected to a current limiting component via a data line, and the current limiting component is connected to the anode of the indicator light (21).

6. The GIS control cabinet for intelligent temperature monitoring and control according to claim 4 is characterized in that: The remote monitoring terminal is connected to the driving display chip of the monitoring display screen (19) via the Internet of Things, a two-way communication interface is established between the driving display chip and the temperature and humidity control microcontroller (24), the output end of the temperature and humidity control microcontroller (24) is connected to the comparison circuit, the temperature sensor module is connected to the control circuit of the evaporator (4) and the condenser (5) via a data line, and the intelligent control module is connected to the auxiliary device microprocessor (23) by wire.

7. The GIS control cabinet for intelligent temperature monitoring and control according to claim 1 is characterized by: The shells of the GIS component cabin (1) and the intelligent control cabin (2) are made of double-layer stainless steel, the interior of the stainless steel is filled with rock wool boards, and the outer surface of the stainless steel is coated with an anti-ultraviolet dressing. A vent (27) is provided on the side of the shell of the GIS component cabin (1), and an electric baffle is provided at the vent (27). The main control line of the electric baffle is connected to the output end of the temperature-sensitive complex (16). A drain plate (26) is provided at the rear end of the shell of the GIS component cabin (1), and the drain plate (26) is open downward at 45 degrees.

8. The GIS control cabinet for intelligent temperature monitoring and control according to claim 1 is characterized by: The bottom end of the inner wall of the GIS component cabin (1) is provided with a cable wiring area (28), the bottom end of the outer wall of the cable wiring area (28) is fixedly mounted with an isolation plate (10), and the bottom end of the outer wall of the isolation plate (10) is fixedly mounted with an overhead bracket (11); A semiconductor cooling sheet (29) is arranged inside the cable wiring area (28), the semiconductor cooling sheet (29) is connected to a power electronic device to form a drive circuit, the drive circuit is connected to the output end of the temperature and humidity control microcontroller (24), the relay circuit is connected in series with the heating wire, the control end of the relay is connected to the output end of the temperature and humidity control microcontroller (24), the optical cable wiring area adopts a modular design, and a temperature and humidity threshold control algorithm is arranged inside the temperature and humidity control microcontroller (24).

9. A detection method for a GIS control cabinet with intelligent temperature monitoring and control, applicable to a GIS control cabinet with intelligent temperature monitoring and control as claimed in any one of claims 1 to 8, characterized in that: The detection method comprises the following steps: S1. The temperature sensor module is fixedly installed on the side of the connection between the transformer, the circuit breaker and the busbar in the GIS component compartment (1) and on the top of the inner wall of the intelligent control compartment (2); S2, the thermistor and platinum resistor in the temperature-sensitive complex (16) sense the change in ambient temperature, the output end of the platinum resistor is connected to the No. 1 signal conditioning circuit, the thermistor is connected to the capacitance measurement circuit, and the capacitance measurement signal is processed. The No. 1 and No. 2 signal conditioning circuits transmit the processed resistance and capacitance signals to the analog front-end chip (15), respectively. The analog front-end chip (15) converts the analog signal into a digital signal and transmits it wirelessly to the intelligent control module through a digital communication interface; S3, the temperature and humidity control microcontroller (24) sends a command to the electric actuator (17) through the control cable, and the electric actuator (17) drives the rotating shaft of the damper (9) through the coupling to control the opening of the damper (9), and the air flow in the circulating air duct (6) increases or decreases accordingly; S4, the infrared detector (18) monitors the GIS component cabin (1), transmits the temperature change data in the GIS component cabin (1) to the signal processing unit, and the internal components of the monitoring display screen (19) process the digital signal and convert it into an image to display the temperature data.

10. The detection method of a GIS control cabinet with intelligent temperature monitoring and control according to claim 9 is characterized in that: The detection method further comprises the following steps: S31, the evaporator (4) and the condenser (5) are connected to the circulation duct (6) through a copper tube; S32, the temperature and humidity control microcontroller (24) is connected to the driving circuit of the semiconductor cooling plate (29), and the self-learning algorithm embedded in the temperature and humidity control microcontroller (24) optimizes the temperature control circuit according to historical data and real-time monitoring results; S41, the DC power supply system of the GIS component compartment (1) is connected to the power supply circuit of the infrared detector (18) and the signal processing unit. When the temperature sensing module detects that the temperature of the GIS component compartment (1) is abnormally increased, the GIS component is automatically triggered to enter a safety protection mode to prevent damage to the equipment; the output pin of the analog front-end chip (15) is connected to the comparison circuit, and the auxiliary device microprocessor (23) is connected to the anode of the indicator light (21) through a current limiting component. When the threshold range is exceeded, the comparison circuit outputs an alarm trigger signal to drive the indicator light (21) to light up.

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