Compact common box type environment-friendly gas ring main unit and working method

Abstract

The invention discloses a compact common box type environment-friendly gas ring main unit and a working method, and belongs to the technical field of high-voltage environment-friendly gas switch cabinets. The ring main unit comprises a gas tank, a cabinet body and an instrument chamber. The gas box is placed on the cabinet body, the instrument chamber is placed on the top of the cabinet body and is arranged in an upper-middle-lower mode in the whole space, a front plate in the gas box is provided with a five-station switch body integrating an isolating switch and a circuit breaker, a top plate in the gas box is fixedly provided with a supporting insulator, one end of the supporting insulator is fixedly connected with a main busbar, and the main busbar is provided with a static knife. One side plate of the gas box is fixedly provided with a side expansion sleeve with an umbrella skirt, one end of one end of the main busbar is connected with one end of the side expansion sleeve with the umbrella skirt, and the bottom of the gas box is provided with a pressure release valve. And reasonable layout is realized in a limited space, modular assembly is realized, and the insulation safety of main elements in the gas tank is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage environmentally friendly gas switch cabinets, and in particular to a compact common-box type environmentally friendly gas ring network cabinet and a working method. Background Art

[0002] At present, the size of the single V-shaped expansion cabinet on the side of the environmentally friendly gas ring main unit in the State Grid's standardized design and customization plan is 420×850×2000 (mm). The single V side expansion cabinet method cannot meet the demand for environmentally friendly gas ring main units for miniaturized box-type transformers, and the cost of assembling a single cabinet is relatively high.

[0003] The existing technology has the technical difficulty of realizing efficient functional integration in a limited space. Traditional equipment requires single unit cabinets (cabinets require mother couplers) and a larger space to realize complete functions.

[0004] The layout of the 12kV environmentally friendly gas common box ring network cabinet used in State Grid's miniaturized box-type transformer is unreasonable within the limited space, and there is discharge breakdown between the end of the main busbar and the ground.

[0005] The daily maintenance of existing equipment is complicated, and the design does not take into account the monitoring and warning functions of device overload or fault conditions. In actual operation, if a device overload or fault occurs, the staff may not be able to discover it in time, which will reduce the safety of equipment use. Summary of the invention

[0006] The technical problem to be solved by the present invention is how to overcome the problem of reasonable layout in a limited space, and to realize modular assembly, provide a compact common-box type environmentally friendly gas ring network cabinet and a working method.

[0007] The present invention adopts the following technical solution:

[0008] A compact common-box environmentally friendly gas ring network cabinet comprises a gas box, a cabinet body and an instrument room; the gas box is placed on the cabinet body, and the instrument room is placed on the top of the cabinet body, and they are arranged in an upper, middle and lower manner in the entire space; at least one isolating switch and circuit breaker integrated five-position switch body is installed on the front plate inside the gas box; a supporting insulator is fixedly arranged on the top plate inside the gas box, and one end of the supporting insulator is fixedly connected to a main busbar; static knives corresponding to the number of the isolating switch and circuit breaker integrated five-position switch bodies are installed on the main busbar, and the static knives are spaced apart from the supporting insulators; an inner side plate of the gas box is fixedly installed with a side expansion sleeve with an umbrella skirt, and the side expansion sleeve with an umbrella skirt is used to improve the insulation performance; one end of the main busbar is connected to one end of the side expansion sleeve with an umbrella skirt, and a pressure relief valve is installed at the bottom of the gas box, and the pressure relief valve is used to relieve the pressure of the gas box; the cabinet body comprises: a cable room, a mechanism room and a pressure relief chamber, a cable room is arranged below the mechanism room, and a pressure relief chamber is arranged on the front side of the cable room.

[0009] According to the compact common-box environmentally friendly gas ring network cabinet, a pressure relief plate is arranged between the cable room and the pressure relief chamber, and the pressure relief plate is used to relieve pressure in the cable room; the pressure relief chamber is used to relieve pressure released by the pressure relief valve and pressure released backward by the pressure relief plate.

[0010] According to the compact common-box environmentally friendly gas ring network cabinet, a current transformer is arranged inside the cable room, a front-plug cable head is arranged on one side of the current transformer, a lightning arrester is arranged at one end of the front-plug cable head, and a cable room door panel is arranged outside the cable room.

[0011] According to the compact common-box environmentally friendly gas ring network cabinet, an inlet and outlet hole is opened in the lower half of the front plate inside the gas box, and an inlet and outlet bushing is arranged through the inlet and outlet hole. One end of the inlet and outlet bushing is connected to the soft connector on the five-position switch body of the isolating switch and circuit breaker through the ABC three-phase circular busbar, and the other end of the inlet and outlet bushing is connected to the current transformer and the front cable head inside the cable room. The five-position switch of the isolating switch and circuit breaker is connected to the manual operating mechanism of the three-position isolating switch and the operating mechanism of the circuit breaker by rotating the main shaft.

[0012] According to the compact common-box environmentally friendly gas ring network cabinet, a mechanism door panel is further provided at the rear of the mechanism room, and a plurality of different operation holes are opened on the mechanism door panel, and protective covers are installed on the outer sides of the operation holes.

[0013] According to the compact common-box environmentally friendly gas ring network cabinet, the instrument room includes an instrument door panel, on which are installed an intelligent microcomputer protection device, an intelligent switch controller, a digital display, a condensation controller, and a protective pressure plate; the instrument door panel and the components arranged on the instrument door are used to significantly enhance the moisture-proof and dust-proof performance of the equipment in a complex operating environment, ensuring the long-term stable operation of the internal electrical components; the interior of the instrument room is used for secondary wiring and connection; the entire cabinet is fixedly connected on both sides with a left large sealing plate and a right large sealing plate, and the two large sealing plates are used to prevent the spread of arc burning.

[0014] According to the compact common-box type environmentally friendly gas ring main cabinet, the compact common-box type environmentally friendly gas ring main cabinet also includes: a remote monitoring platform and a monitoring device, the monitoring platform is used to monitor the equipment operation status, and the monitoring device is used to collect equipment operation data; a number of sensors are also provided inside the gas box for real-time collection of temperature rise, pressure and switch status signals inside the gas box.

[0015] A compact common box type environmentally friendly gas ring main cabinet working method comprises the following steps:

[0016] Initialize the equipment status and confirm that the isolating switch and the integrated five-position switch body of the circuit breaker are in the separated state;

[0017] In the isolated state, the isolating switch and the circuit breaker are integrated into a five-position switch body, which is switched to the grounding state or the test state, and the corresponding opening and closing operations are performed;

[0018] Monitor the equipment operation status through the remote monitoring platform, detect overload or fault conditions, trigger the circuit breaker to open and upload fault information;

[0019] When the pressure in the gas box or cable room is abnormal, the pressure relief valve is triggered to release the over-pressure gas into the pressure relief chamber;

[0020] Collect equipment operation data through monitoring devices and upload them to the remote monitoring platform, while generating fault diagnosis reports;

[0021] Based on the sensor data in the electronic equipment, the temperature rise, pressure and switch status signals inside the gas box are collected in real time;

[0022] According to user instructions or preset logic, control the isolating switch and circuit breaker integrated five-position switch body to switch to the required operating state, including isolation, grounding or opening and closing state;

[0023] In case of overload or fault, the circuit breaker will be automatically opened and an alarm will be sent to the remote monitoring platform;

[0024] Output diagnostic data, operation logs and status reports for device management and intelligent analysis.

[0025] An electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor.

[0026] A computer-readable storage medium stores a computer program.

[0027] Compared with the prior art, the beneficial effects of the present invention include at least:

[0028] (1) This application solves the problem of reasonable layout of the limited space of the State Grid's miniaturized box-type transformer supporting 12kV environmentally friendly gas common box-type ring network cabinet through modular design and integrated layout, achieving a balance between miniaturized equipment and efficient functions;

[0029] (2) The side expansion bushing with shed skirt and ABS resin insulation board are installed on the side plate to solve the problem of ground discharge breakdown at the end of the main busbar;

[0030] (3) The isolating switch break of the five-position switch body with isolating switch and circuit breaker is used to provide personal safety protection for equipment maintenance personnel, and the vacuum circuit breaker is used for closing and opening, and the line or distribution transformer is protected from overload current and ground short circuit.

[0031] (4) This application realizes the monitoring and warning functions of device overload or fault conditions by setting up a remote monitoring platform, a monitoring device and several sensors inside the gas box through the working method of the ring network cabinet, and significantly improves the level of intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the whole cabinet of the present invention;

[0033] Figure 2 A rear view of the air box is shown schematically as a structure of the present invention;

[0034] Figure 3 The front view of the air box is a schematic diagram of the structure of the present invention;

[0035] Figure 4 This is a front view of the whole cabinet showing the structure of the present invention;

[0036] Figure 5 The isometric view of the cabinet body of the present invention is shown.

[0037] In the figure: 1. gas box; 2. cabinet; 201. cable room; 202. mechanism room; 203. pressure relief room; 3. instrument room; 4. five-position switch body with isolating switch and circuit breaker; 5. main busbar; 6. static knife; 7. supporting insulator; 8. side expansion bushing with umbrella skirt; 9. inlet and outlet bushing; 10. ABC three-phase round busbar; 11. pressure relief valve; 12. manual operating mechanism of three-position isolating switch; 13. circuit breaker Operating mechanism; 14. Interlocking mechanism; 15. Current transformer; 16. Front cable head; 17. Lightning arrester; 18. Cable room door panel; 19. Mechanism door panel; 20. Protective cover; 21. Pressure relief plate; 22. Instrument door panel; 23. Intelligent microcomputer protection device; 24. Intelligent switch controller; 25. Digital display; 26. Condensation controller; 27. Protection pressure plate; 28. Large cover plate on the left; 29. ​​Large cover plate on the right. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only embodiments of a part of the present invention, rather than all embodiments. Based on the spirit of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of the present invention.

[0039] In order to solve the problem of how to overcome the problem of reasonable layout in a limited space and to achieve modular assembly, the present application provides a compact common-box environmentally friendly gas ring network cabinet, working method, equipment and medium.

[0040] Combine the following Figure 1-Figure 5As shown, the structural composition of the present invention is described in detail with reference to a specific embodiment.

[0041] like Figure 1 As shown, the present invention provides a compact common-box environmentally friendly gas ring network cabinet, including a gas box 1, a cabinet body 2 and an instrument room 3, wherein the gas box 1 is placed on the cabinet body 2, and the instrument room 3 is placed on the top of the cabinet body 2, and is arranged in an upper, middle and lower position in the entire space.

[0042] like Figure 2 As shown, at least one isolating switch and circuit breaker integrated five-position switch body 4 is installed on the front plate inside the gas box 1, and a supporting insulator 7 is fixedly arranged on the top plate inside the gas box 1. One end of the supporting insulator 7 is fixedly connected to a main busbar 5, and static knives 6 corresponding to the number of the isolating switch and circuit breaker integrated five-position switch body 4 are installed on the main busbar 5. The static knives 6 are spaced apart from the supporting insulator 7, and an inner side plate of the gas box 1 is fixedly installed with a side expansion sleeve 8 with an umbrella skirt, and one end of the main busbar 5 is connected to one end of the side expansion sleeve 8 with an umbrella skirt, and the other end of the main busbar 5 is opposite to the ABS resin insulating plate installed on the right side plate of the gas box, so as to solve the problem of discharge breakdown of the main busbar end to the ground; a pressure relief valve 11 is installed at the bottom of the gas box 1, and the pressure relief valve 11 is used to relieve the pressure of the gas box 1.

[0043] The five-position switch body 4 integrating the isolating switch and the circuit breaker is used to save the internal space of the equipment, improve the operational reliability and facilitate modular installation. In the scenario where the miniaturized box-type transformer is equipped with an environmentally friendly gas ring network cabinet, space saving is an important technical indicator, which can achieve a more compact design to meet the needs of a small installation environment.

[0044] The side expanded bushing 8 with umbrella skirt is used to improve the insulation performance. The design of the side expanded bushing 8 with umbrella skirt can effectively reduce the risk of discharge to the ground, especially in high humidity and high pollution environment. It can increase the leakage path, prevent insulation breakdown, and improve the reliability and safety of the equipment.

[0045] like Figure 5 As shown, the cabinet 2 includes: a cable chamber 201, a mechanism chamber 202 and a pressure relief chamber 203. The cable chamber 201 is arranged below the mechanism chamber 202, and the pressure relief chamber 203 is arranged on the front side of the cable chamber 201. A pressure relief plate 21 is arranged between the cable chamber 201 and the pressure relief chamber 203, and the pressure relief plate 21 is used to relieve pressure on the cable chamber 202. When there is a fault inside the air box 1 or a fault occurs in the cable chamber 202, the pressure relief chamber 203 is used to relieve the pressure released by the pressure relief valve 11 and the pressure released backward by the pressure relief plate 21.

[0046] A current transformer 15 is arranged inside the cable room 201 , a front cable head 16 is arranged on one side of the current transformer 15 , a lightning arrester 17 is arranged at one end of the front cable head 16 , and a cable room door panel 18 is arranged outside the cable room 201 .

[0047] like Figure 1 As shown, an inlet and outlet hole is opened in the lower half of the front plate inside the gas box 1, and an inlet and outlet bushing 9 is arranged through the inlet and outlet hole. One end of the inlet and outlet bushing 9 is connected to the soft connector on the five-position switch body 4 of the isolating switch and circuit breaker through the ABC three-phase circular busbar 10, and the other end of the inlet and outlet bushing 9 is connected to the current transformer 15 and the front cable head 16 inside the cable chamber 201. The five-position switch 4 of the isolating switch and circuit breaker is connected to the three-position isolating switch manual operating mechanism 12 and the circuit breaker operating mechanism 13 by rotating the main shaft, so as to realize the five-position operation of closing, grounding and isolating the circuit breaker.

[0048] like Figure 4 or Figure 5 As shown, a mechanism door panel 19 is further provided at the rear of the mechanism room 202, and a plurality of different operation holes are opened on the mechanism door panel 19, and a protective cover 20 is installed on the outside of each operation hole; in one embodiment, a plurality of operation holes are provided as circuit breaker energy storage operation holes, opening and closing operation holes, and opening and closing grounding operation holes of a three-position switch, wherein the three-position disconnector manual operating mechanism 12 and the circuit breaker operating mechanism 13 are interlocked with the cable room door panel 18 through the interlocking mechanism 14, realizing the linkage function of intelligent status display and fault protection;

[0049] like Figure 4 As shown, the instrument room 3 includes an instrument door panel 22, on which are installed an intelligent microcomputer protection device 23, an intelligent switch controller 24, a digital display 25, a condensation controller 26, and a protective pressure plate 27; the instrument door panel 22 and the components arranged on the instrument door are used to significantly enhance the moisture-proof and dust-proof performance of the equipment in a complex operating environment, ensure the long-term stable operation of the internal electrical components, and the interior of the instrument room 3 is used for secondary wiring and connection; the left side large sealing plate 28 and the right side large sealing plate 29 are fixedly connected on both sides of the entire cabinet, and the two large sealing plates are used to prevent the spread of arc.

[0050] The present application also provides a remote monitoring platform and a monitoring device. The monitoring platform is used to monitor the operating status of the equipment, and the monitoring device is used to collect equipment operating data.

[0051] Several sensors are also arranged inside the gas box 1 for collecting the temperature rise, pressure and switch status signals inside the gas box 1 in real time.

[0052] Embodiment 2:

[0053] The present invention also provides a working method of a compact common-box environmentally friendly gas ring main unit, comprising the following steps:

[0054] Initialize the equipment status and confirm that the isolating switch and the circuit breaker integrated five-position switch body 4 are in a separated state;

[0055] In the isolated state, the five-position switch body 4 integrated with the isolating switch and the circuit breaker is switched to the grounding state or the test state, and the corresponding opening and closing operations are performed;

[0056] Monitor the equipment operation status through the remote monitoring platform, detect overload or fault conditions, trigger the circuit breaker to open and upload fault information;

[0057] When the pressure in the gas box 1 or the cable chamber 201 is abnormal, the pressure relief valve 11 is triggered to release the over-pressure gas into the pressure relief chamber 203;

[0058] Collect equipment operation data through monitoring devices and upload them to the remote monitoring platform, while generating fault diagnosis reports;

[0059] Based on the sensor data in the electronic equipment, the temperature rise, pressure and switch status signals inside the gas box 1 are collected in real time;

[0060] According to user instructions or preset logic, control the isolating switch and circuit breaker integrated five-position switch body to switch to the required operating state, including isolation, grounding or opening and closing state;

[0061] In case of overload or fault, the circuit breaker will be automatically opened and an alarm will be sent to the remote monitoring platform;

[0062] Output diagnostic data, operation logs and status reports for device management and intelligent analysis.

[0063] Embodiment three:

[0064] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor.

[0065] Embodiment 4:

[0066] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program.

[0067] The present application integrates a five-position switch including an isolating switch and a circuit breaker in the gas box, and adopts an arrangement of an umbrella skirt side expansion sleeve, which not only realizes the miniaturization and modularization of the equipment, but also significantly improves the operational reliability and insulation performance, which is in line with the design concept of high efficiency, environmental protection and safety of modern power grids.

[0068] The present invention realizes modular assembly by modularly installing the gas box, cabinet and electric instrument room, while solving the problem of compact structure, fully considering the insulation performance and electric field requirements, and reasonably laying out in a limited space. The product has a small footprint and is easy to move, ensuring the insulation safety of the main components inside the gas box.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A compact shared-box environmentally friendly gas ring main cabinet, comprising a gas box (1), a cabinet body (2) and an instrument room (3); the gas box (1) is placed on the cabinet body (2), and the instrument room (3) is placed on the top of the cabinet body (2), and is arranged in an upper, middle and lower position in the entire space, characterized in that: The front plate of the gas box (1) is installed with at least one isolating switch and circuit breaker integrated five-position switch body (4); the top plate of the gas box (1) is fixedly provided with a support insulator (7); one end of the support insulator (7) is fixedly connected to a main busbar (5); the main busbar (5) is provided with static knives (6) corresponding to the number of the isolating switch and circuit breaker integrated five-position switch body (4); the static knives (6) and the support insulator (7) are arranged at intervals; an inner side plate of the gas box (1) is fixedly provided with a side expansion sleeve (8) with an umbrella skirt; the side expansion sleeve (8) with an umbrella skirt is used to improve insulation performance; one end of the main busbar (5) is connected to one end of the side expansion sleeve (8) with an umbrella skirt; a pressure relief valve (11) is installed at the bottom of the gas box (1); the pressure relief valve (11) is used to relieve pressure on the gas box (1); The cabinet (2) comprises: a cable chamber (201), a mechanism chamber (202) and a pressure relief chamber (203); the cable chamber (201) is arranged below the mechanism chamber (202), and the pressure relief chamber (203) is arranged at the front side of the cable chamber (201).

2. A compact shared-box environmentally friendly gas ring main unit according to claim 1, characterized in that: A pressure relief plate (21) is arranged between the cable chamber (201) and the pressure relief chamber (203), and the pressure relief plate (21) is used to relieve pressure in the cable chamber (201); the pressure relief chamber (203) is used to relieve pressure released by the pressure relief valve (11) and pressure released backward by the pressure relief plate (21).

3. The compact shared-box environmentally friendly gas ring main unit according to claim 1 is characterized by: A current transformer (15) is arranged inside the cable chamber (201), a front plug cable head (16) is arranged on one side of the current transformer (15), a lightning arrester (17) is arranged at one end of the front plug cable head (16), and a cable chamber door panel (18) is arranged outside the cable chamber (201).

4. The compact shared-box environmentally friendly gas ring main unit according to claim 1 is characterized by: An inlet and outlet hole is provided at the lower half of the front plate inside the gas box (1), and an inlet and outlet bushing (9) is provided through the inlet and outlet hole. One end of the inlet and outlet bushing (9) is connected to a flexible connector on a five-position switch body (4) integrating an isolating switch and a circuit breaker through an ABC three-phase circular busbar (10), and the other end of the inlet and outlet bushing (9) is connected to a current transformer (15) and a front plug-in cable head (16) inside a cable chamber (201). The five-position switch integrating an isolating switch and a circuit breaker is connected to a three-position isolating switch manual operating mechanism (12) and a circuit breaker operating mechanism (13) through a rotating main shaft.

5. The compact shared-box environmentally friendly gas ring main unit according to claim 1, characterized in that: A mechanism door plate (19) is also arranged at the rear of the mechanism chamber (202). A plurality of different operation holes are opened on the mechanism door plate (19), and protective covers (20) are installed outside the operation holes.

6. The compact shared-box environmentally friendly gas ring main unit according to claim 1, characterized in that: The instrument room (3) comprises an instrument door panel (22), on which an intelligent microcomputer protection device (23), an intelligent switch controller (24), a digital display (25), a condensation controller (26), and a protective pressure plate (27) are installed; the instrument door panel (22) and the components arranged on the instrument door are used to significantly enhance the moisture-proof and dust-proof performance of the equipment in a complex operating environment, ensuring the long-term stable operation of the internal electrical components; the interior of the instrument room (3) is used for secondary wiring and wiring; the entire cabinet is fixedly connected to a left large sealing plate (28) and a right large sealing plate (29) on both sides, and the two large sealing plates are used to prevent the arc from spreading.

7. The compact shared-box environmentally friendly gas ring main unit according to claim 1, characterized in that: The compact shared-box environmentally friendly gas ring main cabinet further includes: a remote monitoring platform and a monitoring device, wherein the monitoring platform is used to monitor the operating status of the equipment, and the monitoring device is used to collect equipment operating data; A plurality of sensors are also arranged inside the gas box (1) for collecting temperature rise, pressure and switch status signals inside the gas box (1) in real time.

8. A compact common box type environmental protection gas ring main unit working method, characterized by: Based on any one of claims 1 to 7, the compact shared-box environmentally friendly gas ring network cabinet comprises the following steps: Initialize the equipment status and confirm that the isolating switch and the circuit breaker integrated five-position switch body (4) are in a separated state; In the isolated state, the isolating switch and the circuit breaker integrated five-position switch body (4) are switched to the grounding state or the test state, and the corresponding opening and closing operations are performed; Monitor the equipment operation status through the remote monitoring platform, detect overload or fault conditions, trigger the circuit breaker to open and upload fault information; When an abnormal pressure occurs in the gas box (1) or the cable chamber (201), the pressure relief valve (11) is triggered to release the over-pressure gas into the pressure relief chamber (203); Collect equipment operation data through monitoring devices and upload them to the remote monitoring platform, while generating fault diagnosis reports; Based on the sensor data in the electronic device, the temperature rise, pressure and switch status signals inside the gas box (1) are collected in real time; According to user instructions or preset logic, the isolating switch and circuit breaker integrated five-position switch body (4) is controlled to switch to a desired operating state, including isolation, grounding or opening and closing states; In case of overload or fault, the circuit breaker will be automatically opened and an alarm will be sent to the remote monitoring platform; Output diagnostic data, operation logs and status reports for device management and intelligent analysis.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the method as claimed in claim 8 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method as claimed in claim 8 are implemented.

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