C-GIS metal-enclosed switchgear

Abstract

The invention discloses a C-GIS metal-enclosed switchgear, which belongs to the technical field of high-voltage electric appliance switchgear and comprises a gas insulation cabinet body, the gas insulation cabinet body comprises a switch gas box chamber, a pressure relief chamber, a bus chamber, a relay instrument chamber, a switch mechanism chamber and a cable chamber, and a circuit breaker, a grounding switch and an upper sleeve are arranged in the switch gas box chamber; the circuit breaker is connected with the upper sleeve through a bus; a bus connector is arranged in the bus chamber, is connected with the upper sleeve and is used for expanding and cabinet combination; the relay instrument chamber is internally provided with a secondary element, an instrument and an opening and closing control and indication device; a circuit breaker operating mechanism is arranged in the switch mechanism chamber, a grounding switch operating mechanism is arranged in the cable chamber, and a grounding switch and a circuit breaker are mechanically interlocked. The novel digital structural design is adopted, automatic data collection is achieved, the data can be stored and analyzed, and data-driven decisions can be made conveniently in the whole life cycle.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-voltage electrical switchgear, and particularly relates to a C-GIS metal-enclosed switchgear. Background Art

[0002] The description of the background art of the present invention belongs to the related art related to the present invention, and is only used to illustrate and facilitate the understanding of the content of the present invention, and should not be construed as the applicant clearly believing or presuming that the applicant believes it is the prior art on the filing date of the first application of the present invention.

[0003] With the continuous development of the power system and the continuous expansion of the power grid, the demand for medium-voltage switchgear is also increasing. Traditional medium-voltage switchgear has problems such as low working efficiency, high maintenance cost, and large potential safety hazards, which restrict the development of the power system. The development of digital technology provides a new solution for the transformation of medium-voltage switchgear. Against this background, the 40.5 new type of C-GIS digital metal-enclosed switchgear, simply referred to as C-GIS, has attracted more and more widespread attention. It adopts a new digital structure, is equipped with sensors in multiple places, and applies the latest 5G millimeter-wave technology to the IED integrated protection relay. It has the advantages of data accuracy, convenient operation, high fault diagnosis efficiency, energy consumption reduction, whole-life cycle asset health management, improved power supply safety, flexibility, energy conservation and environmental protection, high performance, high reliability, and intelligent management. In recent years, with the promotion of energy transformation and digital transformation, the digital upgrade of the distribution network and the construction of the urban power grid have accelerated. The power grid construction develops towards the direction of large capacity, compactness, pollution-free, high reliability, intelligence, and modularization, empowering the construction of a new power system with digitalization and intelligence. Traditional air-insulated switchgear does not have the ability of real-time monitoring and remote control. When a fault occurs, it cannot provide detailed fault information, resulting in a complex and time-consuming fault diagnosis and elimination process, and has a low degree of integration with modern information technology, making it difficult to achieve interconnection and interoperability with other intelligent devices or systems, thus unable to meet the requirements of users such as various industries, infrastructure, rail transit, and high-class buildings for equipment information monitoring. Summary of the Invention

[0004] The present invention provides a C-GIS metal-enclosed switchgear, which can automatically collect all data, and can also store and analyze these data, facilitating data-driven decision-making throughout the life cycle.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A C-GIS metal-enclosed switchgear, comprising a gas-insulated cabinet body, and the gas-insulated cabinet body includes a switch gas chamber, a busbar chamber, a relay and instrument chamber, a switch mechanism chamber, and a cable chamber; The described switch gas tank room is equipped with a circuit breaker and a post insulator; the circuit breaker and the post insulator are connected by a busbar; The busbar room is equipped with a busbar connector and a busbar temperature monitoring sensor, and the busbar connector is connected to the busbar; the busbar temperature monitoring sensor is used to monitor the busbar temperature; The relay instrument room is equipped with an IED integrated protection relay; a 5G millimeter-wave signal conversion chip is set in the IED integrated protection relay; The cable room is equipped with a current transformer, a voltage transformer, an earthing switch, and a cable head temperature monitoring sensor; the current transformer, the voltage transformer, the cable head temperature monitoring sensor, and the busbar temperature monitoring sensor are all connected to the IED integrated protection relay; The switch mechanism room is equipped with a circuit breaker operating mechanism.

[0006] Further, an AI module is set in the IED integrated protection relay; the AI module is used to collect voltage signals and current signals in the power grid, filter, normalize, and perform weighted summation on the voltage signals and current signals to obtain a weighted sum, perform non-linear transformation on the weighted sum through activation functions Sigmoid, ReLU, and Tanh, and output the fault category; it is also used to convert the fault signal into a sound output.

[0007] Further, an earthing switch monitoring sensor is set in the cable room, and the earthing switch monitoring sensor is connected to the IED integrated protection relay.

[0008] Further, a partial discharge monitoring sensor is also set in the cable room, and the partial discharge monitoring sensor is connected to the IED integrated protection relay.

[0009] Further, the earthing switch and the circuit breaker adopt mechanical interlocking.

[0010] Further, a pressure relief room is set at the rear of the relay instrument room.

[0011] Further, a temperature sensor is set in the switch mechanism room, and the temperature sensor is used to measure the temperature of the circuit breaker and transmit the monitored temperature to the IED integrated protection relay.

[0012] Further, a trolley monitoring sensor is set in the switch mechanism room, and the trolley monitoring sensor is used to monitor the displacement of the trolley and transmit the trolley displacement to the IED integrated protection relay.

[0013] Further, the material of the described switch gas tank room is stainless steel plate, and the materials of other parts in the gas-insulated switchgear cabinet except the switch gas tank room are 2mm aluminized zinc plates.

[0014] Furthermore, the pressure relief valve of the switch gas chamber is made of stainless steel plate, and the pressure relief direction is upward.

[0015] Compared with the prior art, the present invention has at least the following beneficial technical effects: The IED integrated protection relay is built-in with a 5G millimeter-wave signal conversion chip. Signals such as voltage, current, temperature, position, and fault of the cabinet body of the IED integrated protection relay 17 are all collected by the 5G millimeter-wave signal conversion chip. After the signals are subjected to down-conversion processing, analog-to-digital conversion, and digital signal processing, they are transmitted to the background. The average communication delay is as low as within 4 milliseconds, the transmission rate reaches more than 6G bit rate, and the network transmission success rate is higher than 99.9999%, greatly improving the processing speed.

[0016] The IED integrated protection relay is built-in with a signal conversion chip. The signal conversion chip transmits the processed voltage, current and other signals in the power grid to the neurons. After the data is weighted and summed, non-linear transformation is performed through the activation functions Sigmoid, ReLU and Tanh, and the output identifies the fault category, providing a decision-making basis for the relay protection system.

[0017] The AI module built in the IED integrated protection relay has a voice broadcast function, which can broadcast the fault alarm number, reminding the operator to take corresponding measures, thus avoiding potential safety hazards and improving the convenience of operation.

[0018] The cabinet structure of the present invention is designed by a digital solution, which has the advantages of data accuracy, operation convenience, high fault diagnosis efficiency using AI diagnosis, energy consumption reduction, full-life-cycle asset health management, improved power supply safety, flexibility, energy conservation and environmental protection, high performance, high reliability, intelligent management, etc. The digital structure design is adopted, and AI and 5G millimeter-wave technologies are applied. The size of the 40.5 new type C-GIS digital metal-enclosed switchgear is very suitable and meets the high-tech requirements of various users such as industry, infrastructure, rail transit, and high-class buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the IED integrated protection relay module; Figure 2 It is a schematic diagram of the internal structure of the 40.5 new type C-GIS digital metal-enclosed switchgear in the embodiment of the present invention; Figure 3 It is an external view of the 40.5 new type C-GIS digital metal-enclosed switchgear in the embodiment of the present invention.

[0020] In the accompanying drawings: 1. Gas-insulated switchgear body; 2. Earthing switch; 3. Operating mechanism; 4. Lightning arrester; 5. Cable chamber; 6. Post insulator; 7. Busbar; 8. Gas tank; 9. Relay and instrument room; 10. Switch gas tank room; 11. Circuit breaker; 12. Circuit breaker operating mechanism; 13. Voltage transformer; 14. Earthing bar; 15. Earthing switch gas chamber; 16. Contact seat; 17. IED integrated protection relay; 18. Busbar temperature monitoring sensor; 19. Partial discharge monitoring sensor; 20. Drawer monitoring sensor; 21. Voltage and current measurement sensor; 22. Cable head temperature monitoring sensor; 23. Bus duct chamber; 24. Switch mechanism chamber. Detailed implementation manners

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can also be another intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be another intermediate element at the same time. The terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. used herein indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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 construed as a limitation to the present invention.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] The object of the embodiment of the present invention is achieved through the following technical solutions: In combination with Figures 1 to 3, a novel 40.5 C-GIS digital metal-enclosed switchgear, which adopts a novel digital structural design and includes a gas-insulated cabinet body 1. The gas-insulated cabinet body 1 includes a cable chamber 5, a gas tank 8, a relay and instrument chamber 9, a switch gas tank chamber 10, an earthing switch gas chamber 15, a busbar chamber 23 and a switch mechanism chamber 24.

[0026] Inside the gas-insulated cabinet body 1, there are an earthing switch 2, an earthing operating mechanism 3, a lightning arrester 4, a post insulator 6, a busbar 7, a circuit breaker 11, a circuit breaker operating mechanism 12, a voltage transformer 13, an earthing bar 14, a contact seat 16, an IED integrated protection relay 17, a busbar temperature monitoring sensor 18, a partial discharge monitoring sensor 19, a trolley monitoring sensor 20, a voltage and current measurement sensor 21 and a cable head temperature monitoring sensor 22.

[0027] The cable chamber 5 is in a stepped shape. The relay and instrument chamber 9, the gas tank 8 and the busbar chamber 23 are arranged in sequence and are all located on the upper left side of the cable chamber 5. The switch gas tank chamber 10 is located on the left side of the cable chamber 5. The switch mechanism chamber 24 is located below the switch gas tank 10.

[0028] The current transformer, the voltage transformer 13, the busbar temperature monitoring sensor 18, the partial discharge monitoring sensor 19, the temperature sensor, the trolley monitoring sensor 20, the voltage and current measurement sensor 21 and the cable head temperature monitoring sensor 22 are all connected to the IED integrated protection relay 17.

[0029] Refer to Figure 1 , on the basis of the protection and measurement and control device, the IED integrated protection relay 17 adds an AI module, and the protection and measurement and control device can select the CSC-200 series digital protection and measurement and control device of Beijing Sifang.

[0030] The IED integrated protection relay 17 includes a data acquisition module, an input module, an AI module, a keypad, a clock chip, a W78E516 memory, a DSP 56F807 data processor, a shift register 74HC595, an LCD liquid crystal display circuit, an RS232 man-machine interface, a CAN bus driver, a data storage element, a watchdog circuit and an output module.

[0031] The AI module is used to collect voltage signals and current signals in the power grid, filter, normalize and then perform weighted summation on the voltage and current signals to obtain a weighted sum, and perform nonlinear transformation on the weighted sum through activation functions Sigmoid, ReLU and Tanh to output the fault category. The clock chip is used to generate, distribute and manage clock signals. The clock signal is the "heartbeat" in the digital circuit, providing a time reference for the system to ensure that each component can work synchronously.

[0032] Inside the switch gas tank chamber 10, there are various sensors such as a circuit breaker 11 and a contact seat 16.

[0033] Inside the relay instrument chamber 9, there are IED integrated protection relays 17, secondary components, instruments, closing and opening control and indicating devices. Among them, the IED integrated protection relay 17 newly adds an analog input module and a signal conversion chip module, and adopts AI and 5G millimeter wave technologies. Through the optimized analog input module, analog signals such as voltage and current in the power grid are collected, filtered, normalized and other processes are carried out, and then the data is transmitted to the neuron. After the data is weighted and summed, nonlinear transformation is carried out through the activation functions Sigmoid, ReLU and Tanh, and the recognized fault category is output, providing a decision-making basis for the relay protection system. At the same time, the fault alarm is transmitted to the speech recognition module, and the TTS technology converts the real-time data collected by the equipment into a voice signal for broadcasting.

[0034] Further improve the power consumption efficiency and power consumption safety; the circuit breaker 11 is connected to the post insulator 6 through a busbar.

[0035] Inside the busbar chamber 23, there are post insulators 6, busbars 7, busbar connectors and busbar temperature monitoring sensors 18. The post insulator 6 is connected to the busbar 7 for expanding the parallel cabinets; the busbar temperature monitoring sensor 18 is used to monitor the temperature of the busbar 7, and it uses the temperature change to monitor the fault current, improving the monitoring accuracy of the fault current.

[0036] Inside the switch mechanism chamber 24, there are a circuit breaker operating mechanism 12, a temperature sensor and a trolley monitoring sensor 20. The temperature sensor is used to measure the temperature of the circuit breaker and transmit the monitored temperature to the IED integrated protection relay, which is beneficial to the timely monitoring of faults such as short circuits of the circuit breaker. The trolley monitoring sensor 20 can be used to monitor the displacement of the trolley.

[0037] Inside the cable chamber 5, there are cables, current transformers, voltage transformers 13, earthing switches 2, earthing operating mechanisms 3, lightning arresters 4, earthing buses 14, partial discharge monitoring sensors 19, earthing switch monitoring sensors, cable head temperature monitoring sensors 22, current and voltage measurement sensors 21. When the earthing switch operates, the earthing switch monitoring sensor can monitor it in time. The earthing switch 2 and the circuit breaker 11 are mechanically interlocked; the current transformer collects the small output current signal at the output end of the circuit breaker, the voltage transformer 13 outputs the low voltage signal of the switchgear, and the abnormal data of the current and voltage can be monitored in time; the current measurement sensor converts the current into a voltage or other form of signal for output to facilitate measurement and control. The voltage measurement sensor outputs the corresponding electrical signal by sensing the change of voltage. All signals are uploaded to the IED integrated protection relay 17 for perceiving the equipment status.

[0038] Through the monitoring of various types of data, quickly locate the fault location and switch status.

[0039] In some embodiments of the present invention, the grounding switch monitoring sensor is disposed below the grounding switch 2.

[0040] In some embodiments of the present invention, the pressure relief valve of the switch gas tank chamber 10 is made of thin stainless steel plate, and the pressure relief direction is upward pressure relief.

[0041] In some embodiments of the present invention, the bus connector is a bus duct connector.

[0042] In some embodiments of the present invention, the material of the switch gas tank chamber 10 is 3mm stainless steel plate, and the materials of other chambers or boxes are 2mm aluminized zinc plates.

[0043] The advantages of each part of the design of the present invention will be further elaborated in detail below in conjunction with the specific structure: 40.5 New Type C-GIS Digital Metal-Enclosed Switchgear The entire device main body mainly includes a gas-insulated cabinet 1. The gas-insulated cabinet 1 includes a grounding switch 2, a grounding operating mechanism 3, a lightning arrester 4, a cable chamber 5, a post insulator 6, a busbar 7, a gas tank 8, a relay instrument chamber 9, a switch gas tank chamber 10, a circuit breaker 11, a circuit breaker operating mechanism 12, a voltage transformer 13, a grounding bar 14, a grounding switch gas chamber 15, a contact seat 16, an IED integrated protection relay 17, a busbar temperature monitoring sensor 18, a partial discharge monitoring sensor 19, a trolley monitoring sensor 20, a voltage and current measurement sensor 21, a cable head temperature monitoring sensor 22, and a busbar chamber 23. In addition, a pressure relief chamber is designed at the rear of the switch gas tank chamber 10; the multiple separated compartment structures can not only be connected to each other, but also be in an independent state. The functions of each compartment are different. The entire gas-insulated cabinet 1 is made of 2mm thick aluminized zinc plate or 3mm stainless steel plate, processed by a numerical control machine and an automatic laser welding robot, and finally assembled and spliced. The switch gas tank chamber 10, the switch elements of the 40.5 new type C-GIS digital metal-enclosed switchgear are composed of a circuit breaker 11, a mechanism box 12, a contact seat 16, an IED integrated protection relay 17 and various sensors. These high-voltage switch parts are integrally fixed in the closed switch gas tank chamber 10 and filled with an insulating gas at a certain pressure. The pressure relief chamber, because the pressure relief valve of the switch gas tank chamber 10 is installed on the top cover plate, has excellent explosion-proof and protection performance, is made of stainless steel plate, can withstand high-energy impacts, and the pressure relief direction is upward pressure relief. The pressure relief chamber structure should ensure reliability and at the same time meet the requirements of mechanical strength.

[0044] Inside the busbar chamber 23, there are post insulators 6, busbars 7, and busbar temperature monitoring sensors 18. Among them, the post insulators 6 are connected to the busbars 7 and are used to expand the combined cabinets; the busbar temperature monitoring sensors 18 are used to monitor the busbar temperature and transmit it to the IED integrated protection relay 17 to improve the monitoring accuracy of the fault current. If there is a voltage transformer, it can also be installed in the busbar chamber 23.

[0045] The relay and instrument room 9 houses secondary components, instruments, closing and opening controls, and indicators.

[0046] In the switch gas tank chamber 10, the circuit breaker operating mechanism 12 is placed. The earthing switch 2 and the circuit breaker 11 are mechanically interlocked.

[0047] The cable chamber 5 is used to connect the incoming and outgoing cables. The voltage transformer, lightning arrester, etc. adopt advanced plug-in technology, which is convenient for unit transportation and on-site assembly.

[0048] The components of the 40.5 new type C-GIS digital metal-enclosed switchgear switch include an earthing switch 2, an earthing operating mechanism 3, a lightning arrester 4, a cable chamber 5, a post insulator 6, a busbar 7, a gas tank 8, a relay and instrument room 9, a switch gas tank chamber 10, a circuit breaker 11, a circuit breaker operating mechanism 12, a voltage transformer 13, an earthing busbar 14, an earthing switch gas chamber 15, and a contact seat 16.

[0049] The contact seat 16 is used to connect the circuit breaker 4 and the busbar 7.

[0050] The circuit breaker 11 is the most important part of the switchgear and consists of the following components: an operating mechanism with a energy storage spring structure and control components; an insulating pull rod for contact operation; and a solid-sealed pole column with a vacuum interrupter. There is a mechanical interlock device between the circuit breaker 11 and the gas-insulated cabinet body 1. The circuit breaker 11 and the earthing switch 2 are mechanically interlocked. The mechanical interlock can prevent the circuit breaker 11 from being closed when the earthing switch 2 is not in a definite end position (closed / open). Moreover, the mechanical interlock can also prevent the earthing switch 2 from being operated after the circuit breaker 11 is closed. The cable chamber 5 uses cable terminals as the incoming and outgoing lines to connect the high-voltage components between gas chambers and inside and outside the gas chamber. The busbar connectors are used for combined cabinets between switchgears. The busbar connectors are cable boots, which are easy to install, flexible to expand, and do not require dealing with the gas system. The earthing operating mechanism 3 is specially used in conjunction with the earthing switch 2, with stable operation and reliable opening and closing of the earthing switch. The opening and closing of the earthing switch are interlocked with each other. The circuit breaker operating mechanism 12 drives the insulating pull rod to open and close the circuit breaker 11 to complete the opening and closing of the circuit breaker 11. The earthing busbar 14 is placed at the bottom of the cabinet body near the cabinet door, which is convenient for on-site wiring.

[0051] The above embodiments of the present invention enable the switchgear of the present application to have at least the following advantages: (1) The switchgear adopts AI technology: through the intelligent integration of switch states and the use of cloud computing to collect fault information and perform voice announcements. The AI technology is deeply integrated with power technology, further improving power utilization efficiency and safety through natural language interaction, intelligent integration, and fault diagnosis.

[0052] (2) The switchgear adopts 5G millimeter-wave technology: a 5G millimeter-wave signal conversion chip is implanted inside the IED integrated protection relay 17. Signals such as voltage, current, temperature, position, and faults of the switchgear cabinet collected by the relay protection device are all collected by the 5G millimeter-wave signal conversion chip. After down-conversion processing, analog-to-digital conversion, and digital signal processing of the signals, they are transmitted to the background. The average communication delay is as low as within 4 milliseconds, the transmission rate reaches more than 6G bit rate, and the network transmission success rate is higher than 99.9999%.

[0053] (3) The new type of 40.5 C-GIS digital metal-enclosed switchgear has functions such as dynamic simulation indication, live display and interlock, temperature and humidity display and control, and secondary circuit voltage value display, simplifying the operation and maintenance process of the switchgear cabinet and improving work efficiency.

[0054] (4) The gas-insulated cabinet 1 of the new type of 40.5 C-GIS three-phase coaxial metal-enclosed switchgear adopts laser welding or argon arc welding technology. The airtightness of the gas tank is good, the annual gas leakage rate is less than 0.1%, the service life can exceed 20 years, and the SF6 insulation can prevent oxidation of the contact surface and bolt connection, and the external environment will not damage the insulation, enabling the high-voltage components in the switchgear cabinet to be maintenance-free.

[0055] (5) It is equipped with an IED integrated protection relay 17, which can real-time monitor and display important information such as switch status, energy storage status, and trolley position, and provide functions such as voice anti-misoperation prompts and human body induction live prompts, significantly improving the safety of operation.

[0056] (6) The switchgear cabinet adopts advanced sensing technology and automatic control technology, which can timely detect potential problems and take corresponding measures, improving the reliability and stability of the system.

[0057] (7) By collecting and analyzing operation data, the digital switchgear cabinet can help factory operators implement predictive maintenance, ensure timely maintenance of equipment before major loss shutdowns, thereby reducing maintenance costs and downtime.

[0058] The term "consisting of" when describing a combination should include the identified elements, ingredients, components, or steps as well as other elements, ingredients, components, or steps that do not materially affect the basic novel characteristic of the combination. The use of the terms "comprising" or "including" to describe a combination of elements, ingredients, components, or steps herein also contemplates embodiments consisting essentially of these elements, ingredients, components, or steps. The use of the term "may" herein is intended to indicate that any of the attributes described as "may" be optional.

[0059] Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

[0060] It should be understood that the above description is for illustrative purposes only and is not intended to be limiting. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but rather with reference to the preceding claims and the full scope of equivalents to which such claims are entitled. For the purpose of completeness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein from the preceding claims is not a disclaimer of such subject matter, nor should it be considered that the applicants did not consider such subject matter to be part of the disclosed inventive subject matter.

Claims

1. A C-GIS metal-enclosed switchgear, characterized in that, It includes a gas-insulated cabinet body, and the gas-insulated cabinet body includes a switch gas tank chamber (10), a busbar chamber (23), a relay and instrument chamber (9), a switch mechanism chamber (24) and a cable chamber (5); A circuit breaker (11) and post insulators are provided in the switch gas tank chamber (10); the circuit breaker (11) is connected to the post insulators through a busbar; A busbar connector and a busbar temperature monitoring sensor (18) are provided in the busbar chamber (23), and the busbar connector is connected to the busbar; the busbar temperature monitoring sensor (18) is used to monitor the busbar temperature; An IED integrated protection relay (17) is provided in the relay and instrument chamber (9); a 5G millimeter wave signal conversion chip is provided in the IED integrated protection relay (17); Current transformers, voltage transformers, an earthing switch (2), and a cable head temperature monitoring sensor (22) are provided in the cable chamber (5); the current transformers, voltage transformers, cable head temperature monitoring sensor (22), and busbar temperature monitoring sensor (18) are all connected to the IED integrated protection relay (17); A circuit breaker operating mechanism (12) is provided in the switch mechanism chamber (24).

2. The C-GIS metal-enclosed switchgear according to claim 1, wherein, An AI module is provided in the IED integrated protection relay (17); the AI module is used to collect voltage signals and current signals in the power grid, filter, normalize, and perform weighted summation on the voltage signals and current signals to obtain a weighted sum, perform non-linear transformation on the weighted sum through activation functions Sigmoid, ReLU, and Tanh, and output the fault category; it is also used to convert the fault signal into a sound output.

3. A C-GIS metal-enclosed switchgear according to claim 1, characterized in that, An earthing switch monitoring sensor is provided in the cable chamber (5), and the earthing switch monitoring sensor is connected to the IED integrated protection relay (17).

4. A C-GIS metal-enclosed switchgear according to claim 1, characterized in that, A partial discharge monitoring sensor (19) is also provided in the cable chamber (5), and the partial discharge monitoring sensor (19) is connected to the IED integrated protection relay (17).

5. A C-GIS metal-enclosed switchgear according to claim 1, characterized in that, The earthing switch (2) and the circuit breaker (11) adopt mechanical interlocking.

6. A C-GIS metal-enclosed switchgear according to claim 1, characterized in that, A pressure relief chamber is provided at the rear of the relay and instrument chamber (9).

7. A C-GIS metal-enclosed switchgear according to claim 1, characterized in that, A temperature sensor is provided in the switch mechanism chamber (24), and the temperature sensor is used to measure the temperature of the circuit breaker (11) and transmit the monitored temperature to the IED integrated protection relay (17).

8. A C-GIS metal-enclosed switchgear according to claim 1 or 7, characterized in that, A trolley monitoring sensor (20) is provided in the switch mechanism chamber (24), and the trolley monitoring sensor (20) is used to monitor the displacement of the trolley and transmit the trolley displacement to the IED integrated protection relay (17).

9. A C-GIS metal-enclosed switchgear according to claim 1, wherein, The material of the switch gas tank chamber (10) is stainless steel plate, and the materials of other parts of the gas-insulated cabinet body except the switch gas tank chamber (10) are 2mm aluminized zinc plates.

10. A C-GIS metal-enclosed switchgear according to claim 1, characterized in that The pressure relief valve of the switch gas tank chamber (10) is made of stainless steel plate, and the pressure relief direction is top pressure relief.

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