CN222381181U - Environment-friendly gas-insulated ring main unit with cable testing function - Google Patents
Environment-friendly gas-insulated ring main unit with cable testing function Download PDFInfo
- Publication number
- CN222381181U CN222381181U CN202421091985.9U CN202421091985U CN222381181U CN 222381181 U CN222381181 U CN 222381181U CN 202421091985 U CN202421091985 U CN 202421091985U CN 222381181 U CN222381181 U CN 222381181U
- Authority
- CN
- China
- Prior art keywords
- grounding
- cable
- sleeve
- main unit
- ring main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 79
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052802 copper Inorganic materials 0.000 claims abstract description 32
- 239000010949 copper Substances 0.000 claims abstract description 32
- 239000012212 insulator Substances 0.000 claims abstract description 20
- 230000003068 static effect Effects 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The utility model discloses an environment-friendly gas-insulated ring main unit with a cable test function, wherein a grounding short circuit row, a cable test sleeve, a grounding copper bar supporting insulator, a grounding copper bar, a grounding fixed contact supporting insulator, a disconnecting switch moving contact, a disconnecting switch fixed contact, a flexible connecting structure, a top parallel sleeve, a wire inlet and outlet sleeve, a space bus and a circuit breaker are arranged in a ring main unit body, the size of the ring main unit and the design structure of a three-station disconnecting switch and the circuit breaker are not changed, the novel cable test sleeve is connected to the grounding fixed contact through the grounding copper bar, the grounding short circuit bar is arranged at the cable test sleeve and can be detached, when a cable is tested, the grounding short circuit bar is detached firstly, the test equipment is connected with the cable test sleeve, the grounding switch is kept at a closing position, the cable can be tested, the grounding short circuit bar is required to be installed and reset after the test is finished, a withstand voltage test is performed, a cable plug is not required to be detached, and a cable chamber cover plate is not required to be opened.
Description
Technical Field
The utility model relates to the field of insulating ring main units, in particular to an environment-friendly gas-insulated ring main unit with a testing function.
Background
The ring main unit is a group of high-voltage switch equipment which is arranged in a metal or nonmetal insulating cabinet body or is made into an electric equipment for assembling the interval ring main power supply unit, and the core part of the ring main unit adopts a circuit breaker or a load switch and fuse combined electrical apparatus, so that the ring main unit has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like. It is widely used in distribution stations of load centers such as urban residential communities, high-rise buildings, large public buildings, factory enterprises and the like, and box-type substations. The looped netowrk cabinet mainly includes two major categories of gas-insulated looped netowrk cabinet and solid insulation looped netowrk cabinet, and wherein gas-insulated looped netowrk cabinet mainly adopts SF6 as insulating medium, and SF6 is a greenhouse gas, has the pollution to the environment. The environment-friendly gas is used as an insulating medium to solve a series of environmental pollution problems generated by the SF6 insulating ring main unit and the solid insulating ring main unit.
After the ring main unit is installed, acceptance test is required, and the ring main unit can be put into test operation after the equipment is accepted. In order to test the cable insulation and to find faults, it is possible to introduce a test voltage to the cable via the ring main unit without disconnecting the connection device.
The iec 62271-200 standard specifies that the switching device and the control device may be designed to allow testing of cables when they are connected to the switching device and the control device. And in the regulations, an independent test sleeve is required, a detached cable is not received, test equipment on the cable sleeve is not received, and the existing ring main unit cannot meet the requirements.
The chinese patent with publication number CN207409917U discloses a load switch functional unit and a ring main unit with a cable test function, when a cable performance test is required to be performed on a cable head and a cable, the three-station load switch is in a grounded state, the grounded switch is in an on-off state, and the cable head and the cable can be tested by connecting the second grounded contact, the first double-pass sleeve, the first branch bus, the first grounded contact, the conductor, the second branch bus, the second double-pass sleeve, the cable head and the cable stroke with a conductive loop, and applying high voltage at the second grounded contact. The utility model has simple structure, low cost and reliable electrical performance.
In summary, the existing insulating ring main unit has a plurality of defects, and is summarized as follows:
① The standards in accordance with EC62271-200 specify that the switching device and the control device can be designed to allow the cable to be tested while it is connected to the switching device and the control device. The independent test sleeve, demolish the cable and is not accepted, the test equipment on the cable sleeve is not accepted, the existing ring main unit can not meet the above-mentioned requirement;
② In the comparison document, the space of the environment-friendly cabinet is limited, the use voltage-resistant level of the test sleeve is lower than the level of a main loop of the whole machine, only the miniaturized sleeve which meets the cable test voltage level is arranged, and the top cabinet-combining bus is avoided, so that the two-phase test sleeve is arranged on a line.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides an environment-friendly gas-insulated ring main unit with a cable testing function, so as to solve the problems.
In order to achieve the above object, the present utility model is achieved by the following technical scheme.
The utility model provides an environment-friendly gas-insulated looped netowrk cabinet with cable test function, includes the looped netowrk cabinet main part, be equipped with ground short circuit row, cable test sleeve, ground copper bar support insulator, ground copper bar, ground static contact support insulator, isolator, flexible connection structure, top and sleeve pipe, business turn over line sleeve pipe, space bus, circuit breaker in the looped netowrk cabinet main part, isolator includes isolator moving contact, isolator static contact, cable test sleeve pipe passes through ground copper bar and is connected with ground static contact, ground copper bar support insulator fixed ground copper bar position, ground static contact support insulator fixed ground static contact, flexible connection structure connects top and sleeve pipe and isolator static contact respectively, space bus connects top and sleeve pipe and isolator static contact respectively, does not change looped netowrk cabinet size and three station isolator and circuit breaker's design structure, increases a set of cable test sleeve pipe newly, is connected to ground short circuit static contact through ground copper bar, and ground copper bar support insulator fixed ground copper bar position, ground static contact support insulator fixed ground static contact, the space bus is connected with the isolator static contact, the circuit breaker is connected with the circuit breaker. When testing the cable, the grounding short circuit row is dismantled firstly, the testing equipment is connected with the cable testing sleeve, the grounding switch is kept at the closing position, the cable can be tested, and the grounding short circuit row is required to be installed and reset after the testing is finished. The pressure test is carried out through the special cable pressure test port, the cable plug is not required to be disassembled and the cable chamber cover plate is not required to be opened.
Preferably, the cable test sleeve is further connectable to a test device.
Preferably, an insulation distance is reserved between the grounding static contacts.
Preferably, an insulation distance is reserved between the grounding copper bars.
Preferably, the wire inlet and outlet sleeve is connected with a cable.
Compared with the prior art, the utility model discloses an environment-friendly gas-insulated ring main unit with a cable testing function, wherein a grounding short circuit row, a cable testing sleeve, a grounding copper bar supporting insulator, a grounding copper bar, a grounding fixed contact supporting insulator, a disconnecting switch, a flexible connecting structure, a top parallel sleeve, a wire inlet and outlet sleeve, a space bus and a circuit breaker are arranged in a ring main unit body, the functions are realized by mutually combining, the size of the ring main unit and the design structure of the three-station disconnecting switch and the circuit breaker are not changed, a group of cable testing sleeves is newly added, the cable testing sleeve is connected to the grounding fixed contact through the grounding copper bar, and the grounding short circuit row is arranged at the cable testing sleeve and is detachable. When testing the cable, the grounding short circuit row is dismantled firstly, the testing equipment is connected with the cable testing sleeve, the grounding switch is kept at the closing position, the cable can be tested, and the grounding short circuit row is required to be installed and reset after the testing is finished. The pressure test is carried out through the special cable pressure test port, the cable plug is not required to be disassembled and the cable chamber cover plate is not required to be opened.
Drawings
FIG. 1 is a schematic diagram of the environment-friendly gas-insulated ring main unit with a test function according to the present utility model;
FIG. 2 is a schematic structural diagram of the environment-friendly gas-insulated ring main unit with a test function according to the present utility model;
FIG. 3 is a schematic diagram of the structural state of the environment-friendly gas-insulated ring main unit with the electrical test function;
Fig. 4 is a schematic structural state diagram of the environment-friendly gas-insulated ring main unit with the electric test function.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
An environment-friendly gas-insulated ring main unit with a cable testing function comprises a ring main unit body, wherein a grounding shorting bar 1, a cable testing sleeve 2, a grounding copper bar supporting insulator 3, a grounding copper bar 4, a grounding fixed contact 5, a grounding fixed contact supporting insulator 6, an isolating switch, a soft connecting structure 9, a top parallel sleeve 10, a wire inlet and outlet sleeve 11, a space bus 12 and a circuit breaker 13 are arranged in the ring main unit body, the isolating switch comprises an isolating switch moving contact 7 and an isolating switch fixed contact 8, the cable testing sleeve 2 is connected with the grounding fixed contact 5 through the grounding copper bar 4, the grounding copper bar supporting insulator 3 is fixed at the position of the grounding copper bar 4, the grounding fixed contact supporting insulator 6 is fixed with the grounding fixed contact 5, the soft connecting structure 9 is respectively connected with the top parallel sleeve 10 and the isolating switch fixed contact 8, the space bus 12 is connected with the top parallel sleeve 10 and the isolating switch fixed contact 8, the circuit breaker 13 is respectively connected with the space bus 12 and the isolating switch, can close, bear and break the current under the normal loop condition and can close, bear and break the current under the abnormal loop condition within a specified time, the cable test sleeve 2 can also be connected with test equipment, an insulation distance is reserved between the grounding fixed contacts 5, an insulation distance is reserved between the grounding copper bars 4, the wire inlet and outlet sleeve 11 is connected with a cable, the top parallel sleeve 10 is used for a ring main unit cabinet, the isolating switch moving contact 7 is used for controlling the isolating switch to perform the actions of opening, closing and grounding, the grounding fixed contact 5 is fixed by the grounding fixed contact support insulator 6, the insulation distance of the grounding fixed contact 5 is ensured, the grounding copper bar support insulator 3 is fixed by the grounding copper bar 4, and the insulation distance of the grounding copper bar 4 is ensured, the cable test sleeve 2 is connected with the grounding static contact 5 through the grounding copper bar 4, is connected with test equipment when the cable is subjected to pressure resistance test, and the grounding shorting bar 1 shorts the three phases of the grounding switch and is connected to a main grounding system.
The size of the ring main unit and the design structure of the three-station isolating switch and the breaker 13 are not changed, a group of cable test sleeves 2 are newly added, the cable test sleeves are connected to the grounding static contact 5 through the grounding copper bar 4, and the grounding shorting bar 1 is installed at the cable test sleeves 2 and can be detached. When testing the cable, the grounding short circuit row 1 is removed firstly, the testing equipment is connected with the cable testing sleeve 2, the grounding switch is kept at the closing position, the cable can be tested, and the grounding short circuit row 1 needs to be installed and reset after the testing is finished. The pressure test is carried out through the special cable pressure test port, the cable plug is not required to be disassembled and the cable chamber cover plate is not required to be opened.
Fig. 3 is a state where the access test device 1000 and the ground switch 2000 are closed, fig. 4 is a state diagram of the top parallel sleeve 10 and the cable 3000, and the top parallel sleeve 10 is a top parallel sleeve.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (5)
1. The environment-friendly gas-insulated ring main unit with the cable testing function is characterized by comprising a ring main unit body, wherein a grounding short-circuit row (1), a cable testing sleeve (2), a grounding copper bar supporting insulator (3), a grounding copper bar (4), a grounding fixed contact (5), a grounding fixed contact supporting insulator (6), a disconnecting switch, a soft connecting structure (9), a top parallel sleeve (10), a wire inlet and outlet sleeve (11), a space bus (12) and a circuit breaker (13) are arranged in the ring main unit body, the disconnecting switch comprises a disconnecting switch moving contact (7) and a disconnecting switch fixed contact (8), the cable testing sleeve (2) is connected with the grounding fixed contact (5) through the grounding copper bar (4), the grounding copper bar supporting insulator (3) is used for fixing the position of the grounding copper bar (4), the grounding fixed contact supporting insulator (6) is used for fixing the grounding fixed contact (5), the soft connecting structure (9) is respectively connected with the top parallel sleeve (10) and the disconnecting switch fixed contact (8), the space bus (12) is connected with the top parallel sleeve (10) and the disconnecting switch fixed contact (8), and the space bus (12) are respectively connected with the disconnecting switch fixed contact (12).
2. The environment-friendly gas-insulated ring main unit with the cable testing function according to claim 1, wherein the cable testing sleeve (2) is further connected with testing equipment.
3. The environment-friendly gas-insulated ring main unit with the electric test function according to claim 1, wherein an insulation distance is reserved between the grounding static contacts (5).
4. The environment-friendly gas-insulated ring main unit with the electric test function according to claim 1, wherein an insulation distance is reserved between the grounding copper bars (4).
5. The environment-friendly gas-insulated ring main unit with the cable testing function according to claim 1, wherein the wire inlet and outlet sleeve (11) is connected with a cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421091985.9U CN222381181U (en) | 2024-05-20 | 2024-05-20 | Environment-friendly gas-insulated ring main unit with cable testing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421091985.9U CN222381181U (en) | 2024-05-20 | 2024-05-20 | Environment-friendly gas-insulated ring main unit with cable testing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222381181U true CN222381181U (en) | 2025-01-21 |
Family
ID=94257407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421091985.9U Active CN222381181U (en) | 2024-05-20 | 2024-05-20 | Environment-friendly gas-insulated ring main unit with cable testing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222381181U (en) |
-
2024
- 2024-05-20 CN CN202421091985.9U patent/CN222381181U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201113291Y (en) | Outdoor co-box type sulfur hexafluoride multi-circuit ring network cabinet | |
| CN110208630A (en) | A kind of power distribution network real model experiment platform | |
| CN100563070C (en) | Gas-insulated composite switchgear | |
| CN222381181U (en) | Environment-friendly gas-insulated ring main unit with cable testing function | |
| CN203251008U (en) | Solid insulation switch cabinet | |
| CN220399541U (en) | DC resistance test system for high-voltage side of transformer | |
| CN213125124U (en) | Mine explosion-proof intelligent high-voltage complete set distribution device | |
| CN101150246B (en) | 110kV and higher modular transformer substation and its construction method | |
| CN219829960U (en) | Test system for gas-insulated switchgear | |
| CN218275791U (en) | 252KV SF6 and N2 mixed gas insulated metal closed environment-friendly combined electrical apparatus | |
| CN201629566U (en) | Electricity network single-phase grounding comprehensive protecting device | |
| CN114217181B (en) | GIS cable sleeve test window | |
| CN206865005U (en) | Inflatable ac metal closing switch gear | |
| CN210514508U (en) | GIS cable equipment | |
| CN111463695A (en) | Prefabricated on-column distribution table area | |
| CN223297340U (en) | A fully insulated incoming line structure for a step-up substation | |
| CN208386124U (en) | A neutral point drift protection device | |
| CN114217183A (en) | A GIS cable device | |
| CN110854685B (en) | Automatic switching device and system for looped network inflation unit insulation test | |
| CN213936935U (en) | Switch cabinet for testing cable | |
| WO2021175107A1 (en) | Testing method for double-fracture busbar disconnector in 220-kilovolt power transformation combined electrical device | |
| CN219371845U (en) | An open combination electric appliance | |
| CN217061902U (en) | Switch module for 12kV solid ring main unit | |
| CN204905742U (en) | Middling pressure looped netowrk vacuum circuit breaker cabinet | |
| CN218448956U (en) | Layout-compact prefabricated substation and power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |