CN111029093A - Zero sequence current transformer fixing device of small current system ground fault positioning device - Google Patents
Zero sequence current transformer fixing device of small current system ground fault positioning device Download PDFInfo
- Publication number
- CN111029093A CN111029093A CN201911192950.8A CN201911192950A CN111029093A CN 111029093 A CN111029093 A CN 111029093A CN 201911192950 A CN201911192950 A CN 201911192950A CN 111029093 A CN111029093 A CN 111029093A
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- China
- Prior art keywords
- zero sequence
- screw rod
- current transformer
- sequence current
- bus
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention discloses a zero sequence current transformer fixing device of a small current system ground fault positioning device, which comprises a bus connecting assembly and a transformer connecting assembly; the bus connecting assembly comprises a combined connecting plate, the combined connecting plate can be connected in an assembling mode to form a plane mounting table, the combined connecting plate is combined to form a bus banding unit, and the bus banding unit is fixed on the outer surface of a bus in an extruding mode; mutual-inductor coupling assembling includes fixed connection in the screw rod subassembly on mount table surface, screw rod subassembly includes screw rod, first nut and second nut threaded connection in on the screw rod, be used for fixing zero sequence current transformer. Fixing device provides a nimble, adjustable mounting structure, and comb-tooth is embraced and is pricked the structure and can adapt to not unidimensional generating line installation, and double nut structure can adjust mutual-inductor's position and gesture. The parallelogram assembly can adjust the position and attitude of the device relative to the bus.
Description
Technical Field
The invention belongs to the technical field of power plant control systems, relates to a current transformer installation technology of a power plant measurement and control system, and particularly relates to a zero sequence current transformer fixing device of a small current system ground fault positioning device.
Background
When a small current system ground fault positioning device is additionally arranged in a 10kV plant electric system of a power plant, zero sequence current transformers are additionally arranged in a line inlet switch and a load switch panel cabinet of the 10kV plant electric system, and the zero sequence current transformers have no fixed points because the space in the 10kV plant electric system panel cabinet is narrow and small, 10kV cables pass through the zero sequence current transformers. Therefore, the fixing support of the zero sequence current transformer of the small current system ground fault positioning device is designed on site, and the problem of installation and fixation of the zero sequence current transformer in the 10kV station power system disk cabinet is solved.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a device suitable for installing and fixing a zero sequence current transformer in a narrow space, and the device has multi-degree-of-freedom adjustment and fixation, solves the installation problem of the zero sequence current transformer, improves the operation stability of the zero sequence current transformer, and improves the overhauling performance.
According to one aspect of the invention, the zero sequence current transformer fixing device for the small current system ground fault positioning device is characterized by comprising a bus connecting assembly and a transformer connecting assembly;
the bus connecting assembly comprises a combined connecting plate, the combined connecting plate can be connected in an assembling mode to form a plane mounting table, the combined connecting plate is combined to form a bus banding unit, and the bus banding unit is fixed on the outer surface of a bus in an extruding mode;
mutual-inductor coupling assembling includes fixed connection in the screw rod subassembly on mount table surface, screw rod subassembly includes screw rod, first nut and second nut threaded connection in on the screw rod, be used for fixing zero sequence current transformer.
According to an alternative embodiment of the present invention, the banding unit is a through hole.
According to one of the alternative embodiments of the present invention, the banding unit includes a combined banding pipe and a parallelogram assembly, and the combined banding pipe is used for banding and fixing the bus;
the first diagonal position of the parallelogram component is provided with a hinge point, and the parallelogram component is connected between the banding tube and the plane mounting table main body according to the hinge point;
an adjusting mechanism is arranged at a second diagonal position of the parallelogram component, the adjusting mechanism comprises a limiting through hole, an adjusting screw rod and a fixing nut, the limiting through hole is arranged at a vertex point of the second diagonal position and is used for limiting the adjusting screw rod so that the adjusting screw rod can not slide in the axis direction, and the fixing nut is connected with the adjusting screw rod;
when the adjusting screw rod of the parallelogram component rotates, the two vertex angles of the second diagonal position are relatively close to or far away from each other, and meanwhile, the two hinge points of the first diagonal position are forced to be far away from or close to each other.
According to one aspect of the invention, the screw assembly is a plurality of screws having axes perpendicular to the planar mounting table, the screws being arranged in a uniform circular array within the plane centered on the center of the plane of the planar mounting table.
According to one aspect of the invention, the screw assembly includes four sets of screws.
According to one aspect of the invention, the parallelogram assemblies are arranged in a uniform circular array within the plane centered on the planar center of the planar mounting table.
According to one aspect of the invention, the zero sequence current transformer fixing device comprises two sets of parallelogram assemblies.
According to one aspect of the invention, the zero sequence current transformer fixing device comprises three sets of parallelogram assemblies.
According to one aspect of the invention, the binding pipes are two groups of semicircular pipe comb-shaped structures, and when the combined connecting plate is connected in an assembling mode to form the plane mounting table, the two groups of binding pipe comb teeth of the semicircular pipe comb-shaped structures are crossed with each other.
The invention provides a fixing device for a zero sequence current transformer of a small current system ground fault positioning device, and provides a flexible and adjustable mounting structure. The parallelogram assembly can adjust the position and attitude of the device relative to the bus.
Drawings
Fig. 1 is a front view of a zero sequence current transformer bracket of a small current system ground fault locating device in accordance with an embodiment of the present invention;
fig. 2 is a front view of a zero sequence current transformer bracket of a small current system ground fault locating device according to an embodiment of the present invention;
fig. 3 is a front view of a zero sequence current transformer bracket of a small current system ground fault locating device according to an embodiment of the present invention.
Detailed Description
The technical means adopted by the invention to achieve the predetermined object of the invention are further described below with reference to the drawings and the preferred embodiments of the invention.
As shown in fig. 1, fig. 2 and fig. 3, in an alternative embodiment of the present invention, a zero sequence current transformer fixing device for a small current system ground fault positioning device is provided, which includes a bus connecting assembly and a transformer connecting assembly;
the bus connecting assembly comprises a combined connecting plate, the combined connecting plate can be connected in an assembling mode to form a plane mounting table, the combined connecting plate is combined to form a bus banding unit, and the bus banding unit is fixed on the outer surface of a bus in an extruding mode;
mutual-inductor coupling assembling includes fixed connection in the screw rod subassembly on mount table surface, screw rod subassembly includes screw rod, first nut and second nut threaded connection in on the screw rod, be used for fixing zero sequence current transformer.
According to an alternative embodiment of the present invention, the banding unit is a through hole.
According to one of the alternative embodiments of the present invention, the banding unit includes a combined banding pipe and a parallelogram assembly, and the combined banding pipe is used for banding and fixing the bus;
the first diagonal position of the parallelogram component is provided with a hinge point, and the parallelogram component is connected between the banding tube and the plane mounting table main body according to the hinge point;
an adjusting mechanism is arranged at a second diagonal position of the parallelogram component, the adjusting mechanism comprises a limiting through hole, an adjusting screw rod and a fixing nut, the limiting through hole is arranged at a vertex point of the second diagonal position and is used for limiting the adjusting screw rod so that the adjusting screw rod can not slide in the axis direction, and the fixing nut is connected with the adjusting screw rod;
when the adjusting screw rod of the parallelogram component rotates, the two vertex angles of the second diagonal position are relatively close to or far away from each other, and meanwhile, the two hinge points of the first diagonal position are forced to be far away from or close to each other.
According to an aspect of an embodiment of the present invention, the screw assembly is a plurality of screws having axes perpendicular to the plane mounting table, the screws being arranged in a uniform circular array within the plane centering on a center of the plane mounting table.
According to one aspect of an embodiment of the present invention, the screw assembly includes four sets of screws.
According to an aspect of an embodiment of the invention, the parallelogram assemblies are arranged in a uniform circular array within the plane centered on a center of the plane of the planar mounting table.
According to an aspect of an embodiment of the present invention, the zero sequence current transformer fixing apparatus includes two sets of parallelogram assemblies.
According to an aspect of an embodiment of the present invention, the zero sequence current transformer fixing apparatus comprises three sets of parallelogram assemblies.
According to an aspect of the embodiment of the invention, the binding pipes are two groups of semicircular pipe comb-shaped structures, and when the combined connecting plate is connected in an assembling manner to form the plane mounting table, the two groups of binding pipe comb teeth of the semicircular pipe comb-shaped structures are crossed with each other.
Above scheme, in the aspect of solving the problem of background art, nimble, adjustable mounting structure, comb-tooth form embrace and prick the structure and can adapt to not unidimensional generating line installation, and double nut structure can adjust the position and the gesture of mutual-inductor. The parallelogram assembly can adjust the position and attitude of the device relative to the bus.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The fixing device of the zero sequence current transformer of the small current system ground fault positioning device is characterized by comprising a bus connecting assembly and a transformer connecting assembly;
the bus connecting assembly comprises a combined connecting plate, the combined connecting plate can be connected in an assembling mode to form a plane mounting table, the combined connecting plate is combined to form a bus banding unit, and the bus banding unit is fixed on the outer surface of a bus in an extruding mode;
mutual-inductor coupling assembling includes fixed connection in the screw rod subassembly on mount table surface, screw rod subassembly includes screw rod, first nut and second nut threaded connection in on the screw rod, be used for fixing zero sequence current transformer.
2. The device for fixing a zero sequence current transformer of a small current system ground fault locating device of claim 1, wherein the banding unit is a through hole.
3. The fixing device for the zero sequence current transformer of the small current system ground fault positioning device according to claim 1 or 2, wherein the banding unit comprises a combined banding pipe and a parallelogram assembly, and the combined banding pipe is used for being banded and fixed with the bus;
the first diagonal position of the parallelogram component is provided with a hinge point, and the parallelogram component is connected between the banding tube and the plane mounting table main body according to the hinge point;
an adjusting mechanism is arranged at a second diagonal position of the parallelogram component, the adjusting mechanism comprises a limiting through hole, an adjusting screw rod and a fixing nut, the limiting through hole is arranged at a vertex point of the second diagonal position and is used for limiting the adjusting screw rod so that the adjusting screw rod can not slide in the axis direction, and the fixing nut is connected with the adjusting screw rod;
when the adjusting screw rod of the parallelogram component rotates, the two vertex angles of the second diagonal position are relatively close to or far away from each other, and meanwhile, the two hinge points of the first diagonal position are forced to be far away from or close to each other.
4. The small current system ground fault locating device zero sequence current transformer fixing apparatus of claim 3, wherein the screw assembly is a plurality of screws with axes perpendicular to the planar mounting table, the screws being arranged in a uniform circular array within the plane centered on a planar center of the planar mounting table.
5. The small current system ground fault locating device zero sequence current transformer fixing device of claim 4, wherein the screw assembly comprises four sets of screws.
6. A small current system ground fault location device zero sequence current transformer fixture as claimed in any of claims 1-5 wherein said parallelogram assemblies are arranged in a uniform circular array within said plane centered on the plane center of said planar mounting table.
7. The small current system ground fault locating device zero sequence current transformer fixing arrangement of claim 6, characterized in that the zero sequence current transformer fixing arrangement comprises two sets of parallelogram assemblies.
8. The small current system ground fault locating device zero sequence current transformer fixing arrangement of claim 6 or 7, characterized in that the zero sequence current transformer fixing arrangement comprises three sets of parallelogram assemblies.
9. The device of claim 8, wherein the two groups of comb-shaped semi-circular tubes are connected in an assembled manner to form the planar mounting platform, and the two groups of comb-shaped semi-circular tubes intersect with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911192950.8A CN111029093B (en) | 2019-11-28 | 2019-11-28 | Zero sequence current transformer fixing device in small current system ground fault positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911192950.8A CN111029093B (en) | 2019-11-28 | 2019-11-28 | Zero sequence current transformer fixing device in small current system ground fault positioning device |
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| Publication Number | Publication Date |
|---|---|
| CN111029093A true CN111029093A (en) | 2020-04-17 |
| CN111029093B CN111029093B (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911192950.8A Active CN111029093B (en) | 2019-11-28 | 2019-11-28 | Zero sequence current transformer fixing device in small current system ground fault positioning device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0855745A (en) * | 1994-08-10 | 1996-02-27 | Kansai Electric Power Co Inc:The | Fixture for current transformer |
| JP2009081184A (en) * | 2007-09-25 | 2009-04-16 | Daihen Corp | High voltage electric apparatus and current transformer fixture for high voltage electric apparatus |
| CN207572242U (en) * | 2017-11-14 | 2018-07-03 | 国网江苏省电力公司南通供电公司 | Bus-type current transformer copper bar fixator |
| CN207690599U (en) * | 2018-01-29 | 2018-08-03 | 国网浙江诸暨市供电有限公司 | Straight-through current transformer suspension fixed structure |
| CN209374222U (en) * | 2018-12-29 | 2019-09-10 | 德力源电气有限责任公司 | A kind of fixed device of low-voltage current mutual inductor |
-
2019
- 2019-11-28 CN CN201911192950.8A patent/CN111029093B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0855745A (en) * | 1994-08-10 | 1996-02-27 | Kansai Electric Power Co Inc:The | Fixture for current transformer |
| JP2009081184A (en) * | 2007-09-25 | 2009-04-16 | Daihen Corp | High voltage electric apparatus and current transformer fixture for high voltage electric apparatus |
| CN207572242U (en) * | 2017-11-14 | 2018-07-03 | 国网江苏省电力公司南通供电公司 | Bus-type current transformer copper bar fixator |
| CN207690599U (en) * | 2018-01-29 | 2018-08-03 | 国网浙江诸暨市供电有限公司 | Straight-through current transformer suspension fixed structure |
| CN209374222U (en) * | 2018-12-29 | 2019-09-10 | 德力源电气有限责任公司 | A kind of fixed device of low-voltage current mutual inductor |
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| Publication number | Publication date |
|---|---|
| CN111029093B (en) | 2021-12-03 |
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