CN110676012B - Sleeve wire outlet device, transformer, reactor and sleeve fault judgment method - Google Patents
Sleeve wire outlet device, transformer, reactor and sleeve fault judgment method Download PDFInfo
- Publication number
- CN110676012B CN110676012B CN201910889691.8A CN201910889691A CN110676012B CN 110676012 B CN110676012 B CN 110676012B CN 201910889691 A CN201910889691 A CN 201910889691A CN 110676012 B CN110676012 B CN 110676012B
- Authority
- CN
- China
- Prior art keywords
- current
- casing
- current transformer
- fault
- flange
- 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
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 33
- 230000000712 assembly Effects 0.000 claims description 21
- 238000000429 assembly Methods 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- 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
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to the technical field of electrical equipment and discloses a sleeve outlet device, a transformer, a reactor and a sleeve fault judgment method.A current test component of the sleeve outlet device comprises a conductive connecting piece and a second current transformer, wherein the conductive connecting piece is respectively connected to a sleeve flange and a lifting seat flange, and detects the current passing through the conductive connecting piece through the second current transformer; when the first current transformer does not detect fault current and the second current transformer detects the fault current, whether a fault discharge point exists in the casing oil or not is observed, when the fault discharge point exists in the casing oil, a fault in the casing oil is judged, and when the fault discharge point does not exist in the casing oil, a ground fault of the casing from a casing section of the current transformer to an air section of the casing is judged.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a bushing outlet device, a transformer, a reactor and a bushing fault judgment method.
Background
At present, the bushing outlet device is used in a transformer or a reactor, the bushing outlet device comprises a bushing and a lifting seat, as shown in fig. 1, fig. 1 is a schematic illustration of a failure in the oil portion 40 of a prior art casing, in the prior art, the bushing 10 is mounted on the elevated stand 20, the current transformer 30 is arranged in the elevated stand 20, the current transformer 30 is used for measuring the current value of the current-carrying conductor 50 in the bushing 10, when the oil portion 40 of the bushing fails, and the discharge path develops toward the bushing 10 where the current transformer 30 is installed and breaks down, fault current passes through the current transformer 30 from the current carrying conductor 50 in the centre of the bushing 10, however, the current transformer 30 passes through the discharge channel reversely and finally enters the ground through the flange grounding point, so that the current transformer 30 cannot detect the fault current, and therefore, the analysis and research on the sleeve fault are not facilitated.
Disclosure of Invention
The embodiment of the invention aims to provide a bushing outlet device, a transformer, a reactor and a bushing fault judgment method, which can detect fault current, solve the problem that the fault current cannot be detected in the prior art and are beneficial to analyzing and researching bushing faults.
In order to solve the technical problem, an embodiment of the present invention provides a bushing outlet device, including a first current transformer, a current testing assembly, a rising seat flange and a rising seat with an opening at a top, where the bushing includes a current transformer sleeve section, and a bushing air section and a bushing oil middle section connected to two ends of the current transformer sleeve section, the bushing is provided with a bushing flange, the bushing flange is connected to the rising seat flange, and the rising seat flange is connected to the opening of the rising seat; the sleeve air section is positioned outside the lifting seat, the sleeve section of the current transformer and the part of the sleeve oil penetrate through the sleeve flange and are positioned in the lifting seat, and the first current transformer is arranged on the sleeve section of the current transformer;
the current testing assembly comprises a conductive connecting piece and a second current transformer, wherein the first end of the conductive connecting piece is electrically connected with the sleeve flange, and the second end of the conductive connecting piece penetrates through the second current transformer and is electrically connected with the lifting seat flange.
Preferably, the number of the current testing assemblies is multiple.
Preferably, the number of the current testing assemblies is 4, the 4 current testing assemblies are located on a circumference with the center of the lifting seat as a circle center, and two adjacent current testing assemblies are separated by 90 degrees.
Preferably, the current testing assembly further comprises a first fastener and a second fastener, a first end of the conductive connecting member is fixed on the casing flange through the first fastener and electrically connected with the casing flange, and a second end of the conductive connecting member is fixed on the raised seat flange through the second fastener and electrically connected with the raised seat flange.
As a preferred scheme, the bushing outlet device further comprises an insulating connecting assembly, the insulating connecting assembly comprises a screw, an insulating gasket and an insulating pipe, a mounting hole is formed in the bushing flange, and the tail of the screw penetrates through the mounting hole and is connected with the lifting seat flange; the insulating gasket and the insulating pipe are respectively sleeved on the tail part of the screw, the top of the insulating gasket is abutted against the head part of the screw, the bottom of the insulating gasket is abutted against the top of the sleeve flange, and the insulating pipe is positioned in the mounting hole.
Preferably, the number of the insulation connection assemblies is multiple, and the insulation connection assemblies are distributed in a radial shape relative to the center of the lifting seat.
Preferably, the casing pipe outlet device further comprises a sealing ring, a first sealing groove is formed in the casing pipe flange, a second sealing groove is formed in the lifting seat flange, and the sealing ring is accommodated in the first sealing groove and the second sealing groove.
In order to solve the same technical problem, an embodiment of the present invention further provides a transformer, including the bushing outlet device.
In order to solve the same technical problem, an embodiment of the invention further provides a reactor, which comprises the bushing outlet device.
In order to solve the same technical problem, an embodiment of the present invention further provides a method for judging a casing fault, where the judging based on the casing outlet device includes:
1) when the first current transformer detects a fault current and the second current transformer does not detect a fault current, determining that a fault occurs in a current loop from the casing oil middle portion to a position below the casing oil middle portion; wherein the current loop below the casing oil middle part is a current loop which is positioned below the casing oil middle part and is connected with a current-carrying conductor in the casing;
2) when the first current transformer does not detect fault current and the second current transformer detects fault current, observing whether a fault discharge point exists in the casing oil;
when a fault discharge point exists in the casing oil, judging that a fault exists in the casing oil, so that fault current flows into the first current transformer, flows out of the first current transformer and the second current transformer through the casing oil and the sleeve section of the current transformer, and finally flows into the ground through the casing flange, the conductive connecting piece and the lifting seat flange;
and when no fault discharge point exists in the casing oil, judging that the casing has a ground fault from the sleeve section of the current transformer to the air section of the casing.
The embodiment of the invention provides a bushing outlet device, a transformer, a reactor and a bushing fault judging method, wherein the bushing outlet device is provided with a current testing assembly, the current testing assembly comprises a conductive connecting piece and a second current transformer, two ends of the conductive connecting piece are respectively connected to a bushing flange and a lifting seat flange, and the current passing through the conductive connecting piece is detected by the second current transformer; when the first current transformer does not detect the fault current and the second current transformer detects the fault current, observing whether there is fault discharge point in the casing oil, when there is fault discharge point in the casing oil, it can be determined that, due to a partial fault in the casing oil, a fault current flows into the first current transformer, and flows out of the first current transformer and the second current transformer through the middle part of the casing oil and the sleeve section of the current transformer, when no fault discharge point exists in the sleeve oil, the sleeve is judged to have a ground fault from the sleeve section of the current transformer to the air section of the sleeve, so that fault current flows into the first current transformer and flows out of the first current transformer and the second current transformer, the current testing assembly is arranged to detect the fault current, so that the problem that the fault current cannot be detected in the prior art is solved, and the sleeve fault can be analyzed and researched.
Drawings
FIG. 1 is a schematic illustration of a prior art casing with a partial failure in oil;
FIG. 2 is a schematic structural diagram of a bushing outlet device in an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a top view of a bushing outlet arrangement in an embodiment of the invention;
wherein, fig. 1: 10. a sleeve; 20. a lifting seat; 30. a current transformer; 40. an oil-in-oil portion of the casing; 50. a current carrying conductor;
fig. 2 to 4: 1. a first current transformer; 21. a conductive connection member; 22. a second current transformer; 23. a first fastener; 24. a second fastener; 3. a sleeve flange; 31. mounting holes; 32. a first seal groove; 4. raising the seat flange; 41. a second seal groove; 5. a lifting seat; 61. a screw; 62. an insulating spacer; 63. an insulating tube; 7. a seal ring; 81. a current transformer sleeve segment; 82. a casing air section; 83. the casing oil fraction.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, the descriptions of the upper, lower, left, right, front, rear and the like orientations and the top and bottom are defined with respect to fig. 2, and when the placement manner of the cannula outlet device is changed, the corresponding orientations and the descriptions of the top and bottom will also be changed according to the change of the placement manner, and the present invention is not described herein again.
Referring to fig. 2 to 4, a bushing outlet device according to a preferred embodiment of the present invention includes a first current transformer 1, a current testing assembly, a bushing flange 3, a lifting seat flange 4, and a lifting seat 5 with an opening at the top, where the bushing flange 3 is used to mount a bushing, the bushing flange 3 is connected to the lifting seat flange 4, and the lifting seat flange 4 is connected to the opening of the lifting seat 5; the bushing comprises a current transformer sleeve section 81, and a bushing air section 82 and a bushing oil middle section 83 which are connected to two ends of the current transformer sleeve section 81, wherein the bushing air section 82 is located outside the lifting seat 5, the current transformer sleeve section 81 and the bushing oil middle section 83 penetrate through the bushing flange 3 and are located inside the lifting seat 5, and the first current transformer 1 is arranged on the current transformer sleeve section 81;
the current testing assembly comprises a conductive connecting piece 21 and a second current transformer 22, wherein a first end of the conductive connecting piece 21 is electrically connected with the sleeve flange 3, and a second end of the conductive connecting piece 21 penetrates through the second current transformer 22 and is electrically connected with the lifting seat flange 4.
In the embodiment of the invention, a current testing assembly is arranged on a bushing outlet device, the current testing assembly comprises a conductive connecting piece 21 and a second current transformer 22, two ends of the conductive connecting piece 21 are respectively connected to a bushing flange 3 and a lifting seat flange 4, and the current passing through the conductive connecting piece 21 is detected by the second current transformer 22, when the bushing outlet device is used, when a first current transformer 1 detects fault current and the second current transformer 22 does not detect the fault current, a current loop from a bushing oil part 83 to a bushing oil part 83 is judged to have a fault; when the first current transformer 1 does not detect fault current and the second current transformer 22 detects fault current, whether a fault discharge point exists in the casing oil part 83 is observed, when the fault discharge point exists in the casing oil part 83, it can be judged that the fault current flows into the first current transformer 1 due to the fault of the casing oil part 83 and flows out of the first current transformer 1 and the second current transformer 22 through the casing oil part 83 and the current transformer sleeve section 81, when the fault discharge point does not exist in the casing oil part 83, it is judged that a grounding fault occurs in the casing from the current transformer sleeve section 81 to the casing air section 82, so that the fault current flows into the first current transformer 1 and flows out of the first current transformer 1 and the second current transformer 22, and the problem that the fault current cannot be detected in the prior art is solved by arranging a current testing component to detect the fault current, the method is beneficial to analyzing and researching the casing failure.
Referring to fig. 3, in order to reliably connect the conductive connecting member 21 to the casing flange 3 and the elevated seat flange 4, the current testing assembly in this embodiment further includes a first fastening member 23 and a second fastening member 24, a first end of the conductive connecting member 21 is fixed to the casing flange 3 by the first fastening member 23 and electrically connected to the casing flange 3, a second end of the conductive connecting member 21 is fixed to the elevated seat flange 4 by the second fastening member 24 and electrically connected to the elevated seat flange 4, and the first fastening member 23 and the second fastening member 24 may be screws or the like. In addition, the conductive connecting member 21 is preferably a copper bar, as shown in fig. 3, the conductive connecting member 21 is bent into a rectangular structure, and a sufficient space is left for placing the second current transformer 22, and of course, the conductive connecting member 21 may also be made of other conductive materials, which is not described herein.
In a specific implementation, the fault current may be as high as several tens of kiloamperes, and in order to reduce the requirement on the measurement range of the second current transformer 22, the number of the current testing assemblies in this embodiment is preferably multiple, and more preferably, the number of the current testing assemblies is 4, as shown in fig. 4, the 4 current testing assemblies are located on a circumference with the center of the riser 5 (i.e., the center of the current carrying conductor) as the center of a circle, and two adjacent current testing assemblies are separated by 90 degrees. In the specific implementation, the recording waveforms of the second current transformers 22 of the 4 current testing assemblies can be subjected to vector superposition, so that the overall fault current can be obtained, the requirement on the measuring range of the second current transformers 22 is effectively reduced, and in addition, the connection of the 4 current testing assemblies (namely, multiple points) enables the grounding of the sleeve flange 3 to be more reliable, and the single-point grounding failure is avoided. It should be noted that, a grounding point may be provided on the lifting seat 5 of the casing outlet device, and the casing may be grounded through the casing flange 3, the lifting seat flange 4 and the grounding point.
In order to ensure that the second current transformer 22 measures the fault current, the bushing outlet device in this embodiment further includes an insulating connection component, where the insulating connection component includes a screw 61, an insulating gasket 62, and an insulating pipe 63, where the insulating gasket 62 and the insulating pipe 63 are used to ensure insulation between the screw 61 and the bushing flange 3, specifically, a mounting hole 31 is formed in the bushing flange 3, and a tail portion of the screw 61 passes through the mounting hole 31 and is connected to the elevated seat flange 4; the insulating gasket 62 and the insulating tube 63 are respectively sleeved on the tail of the screw 61, the top of the insulating gasket 62 abuts against the head of the screw 61, the bottom of the insulating gasket 62 abuts against the top of the sleeve flange 3, and the insulating tube 63 is located in the mounting hole 31. The mounting connection between the sleeve flange 3 and the lifting seat flange 4 is realized through the screw 61 of the insulating connecting assembly, in addition, an insulating gasket 62 is arranged between the head of the screw 61 of the insulating connecting assembly and the sleeve flange 3, and an insulating pipe 63 is arranged between the tail of the screw 61 of the insulating connecting assembly and the mounting hole 31 of the sleeve flange 3, so that the screw 61 of the insulating connecting assembly and the sleeve flange 3 are kept insulated from each other, the fault current is ensured to flow only through the conductive connecting piece 21, and the fault current measured by the second current transformer 22 is further ensured. In addition, for the connection reliability between the sleeve flange 3 and the raised seat flange 4, the number of the insulation connection assemblies in this embodiment may be multiple, and the multiple insulation connection assemblies are distributed radially with respect to the center of the raised seat 5, and preferably, the screws 61 of the insulation connection assemblies are stainless steel screws.
Referring to fig. 3, in order to ensure the sealing performance of the bushing outlet device, the bushing outlet device in this embodiment further includes a sealing ring 7, the bushing flange 3 is provided with a first sealing groove 32, the lifting seat flange 4 is provided with a second sealing groove 41, and the sealing ring 7 is accommodated in the first sealing groove 32 and the second sealing groove 41.
In order to solve the same technical problem, an embodiment of the present invention further provides a transformer, including the bushing outlet device.
In order to solve the same technical problem, an embodiment of the invention further provides a reactor, which comprises the bushing outlet device.
In order to solve the same technical problem, an embodiment of the present invention further provides a method for determining a bushing fault, where the determining based on the transformer includes:
1) when the first current transformer 1 detects a fault current and the second current transformer 22 does not detect a fault current, it is determined that a fault has occurred in the current circuit from the casing oil middle portion 83 to below the casing oil middle portion 83; the current loop below the casing oil middle part 83 refers to a current loop located below the casing oil middle part 83 and connected with a current-carrying conductor in the casing, such as a coil in a transformer;
2) observing whether a fault discharge point exists in the casing oil portion 83 when the first current transformer 1 does not detect a fault current and the second current transformer 22 detects a fault current; wherein, the fault discharge point can be an arc trace, and in specific implementation, the fault discharge point can be observed in the casing oil part 83 by people; at this time, there are the following two cases:
when the casing oil middle part 83 has a fault discharge point, judging that the casing oil middle part 83 has a fault, so that fault current flows into the first current transformer 1, flows out of the first current transformer 1 and the second current transformer 22 through the casing oil middle part 83 and the current transformer sleeve section 81, and finally flows into the ground through the casing flange 3, the conductive connecting piece 21 and the lifting seat flange 4;
when the part 83 in the casing oil has no fault discharge point, it is determined that the casing has a ground fault from the current transformer casing section 81 to the casing air section 82, so that a fault current flows into the first current transformer 1, flows out of the first current transformer 1 and the second current transformer 22, and finally flows into the ground through the casing flange 3, the conductive connecting member 21 and the riser flange 4.
To sum up, the embodiment of the present invention provides a bushing outlet device, a transformer, a reactor, and a bushing fault determination method, where the bushing outlet device is provided with a current test component, the current test component includes a conductive connecting member 21 and a second current transformer 22, two ends of the conductive connecting member 21 are respectively connected to a bushing flange 3 and a lifting seat flange 4, and detect a current passing through the conductive connecting member 21 through the second current transformer 22, and when the bushing outlet device is used, when a fault current is detected by a first current transformer 1 and the fault current is not detected by a second current transformer 22, it is determined that a current loop from a bushing oil middle portion 83 to a bushing oil middle portion 83 is in fault; when the first current transformer 1 does not detect fault current and the second current transformer 22 detects fault current, whether a fault discharge point exists in the casing oil part 83 is observed, when the fault discharge point exists in the casing oil part 83, it can be judged that the fault current flows into the first current transformer 1 due to the fault of the casing oil part 83 and flows out of the first current transformer 1 and the second current transformer 22 through the casing oil part 83 and the current transformer sleeve section 81, when the fault discharge point does not exist in the casing oil part 83, it is judged that a grounding fault occurs in the casing from the current transformer sleeve section 81 to the casing air section 82, so that the fault current flows into the first current transformer 1 and flows out of the first current transformer 1 and the second current transformer 22, and the problem that the fault current cannot be detected in the prior art is solved by arranging a current testing component to detect the fault current, the position of the casing fault can be judged, evidence is provided for casing fault analysis, and the casing fault analysis and research are facilitated.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A casing outlet device is characterized by comprising a casing, a first current transformer, a current testing assembly, a lifting seat flange and a lifting seat with an opening at the top, wherein the casing comprises a current transformer casing section, a casing air section and a casing oil middle section which are connected to two ends of the current transformer casing section; the sleeve air section is positioned outside the lifting seat, the sleeve section of the current transformer and the part of the sleeve oil penetrate through the sleeve flange and are positioned in the lifting seat, and the first current transformer is arranged on the sleeve section of the current transformer;
the current testing assembly comprises a conductive connecting piece and a second current transformer, wherein the first end of the conductive connecting piece is electrically connected with the sleeve flange, and the second end of the conductive connecting piece penetrates through the second current transformer and is electrically connected with the lifting seat flange.
2. The bushing outlet device according to claim 1, wherein the number of said current test assemblies is plural.
3. The bushing outlet device according to claim 2, wherein the number of said current testing assemblies is 4, 4 of said current testing assemblies are located on a circumference centered on the center of said elevated seat, and two adjacent ones of said current testing assemblies are spaced apart by 90 degrees.
4. The bushing outlet device according to claim 1, wherein the current test assembly further includes a first fastener and a second fastener, a first end of the conductive connector is fixed to the bushing flange and electrically connected to the bushing flange by the first fastener, and a second end of the conductive connector is fixed to the raised seat flange and electrically connected to the raised seat flange by the second fastener.
5. The bushing outlet device according to any one of claims 1 to 4, further comprising an insulation connection assembly, wherein the insulation connection assembly comprises a screw, an insulation gasket and an insulation pipe, a mounting hole is formed in the bushing flange, and a tail portion of the screw penetrates through the mounting hole and is connected with the lifting seat flange; the insulating gasket and the insulating pipe are respectively sleeved on the tail part of the screw, the top of the insulating gasket is abutted against the head part of the screw, the bottom of the insulating gasket is abutted against the top of the sleeve flange, and the insulating pipe is positioned in the mounting hole.
6. The bushing outlet device according to claim 5, wherein the number of said insulation connection assemblies is plural, and a plurality of said insulation connection assemblies are radially distributed with respect to a center of said elevated seat.
7. The casing pipe outlet device according to any one of claims 1 to 4, further comprising a sealing ring, wherein the casing flange is provided with a first sealing groove, the lifting seat flange is provided with a second sealing groove, and the sealing ring is accommodated in the first sealing groove and the second sealing groove.
8. A transformer, characterised by comprising a bushing outlet arrangement according to any of claims 1-7.
9. A reactor, characterized by comprising a bushing outlet device according to any one of claims 1-7.
10. A casing failure judgment method, wherein the judgment is performed based on the casing outlet device according to any one of claims 1 to 7, comprising:
1) when the first current transformer detects a fault current and the second current transformer does not detect a fault current, determining that a fault occurs in a current loop from the casing oil middle portion to a position below the casing oil middle portion; wherein the current loop below the casing oil middle part is a current loop which is positioned below the casing oil middle part and is connected with a current-carrying conductor in the casing;
2) when the first current transformer does not detect fault current and the second current transformer detects fault current, observing whether a fault discharge point exists in the casing oil;
when a fault discharge point exists in the casing oil, judging that a fault exists in the casing oil, so that fault current flows into the first current transformer, flows out of the first current transformer and the second current transformer through the casing oil and the sleeve section of the current transformer, and finally flows into the ground through the casing flange, the conductive connecting piece and the lifting seat flange;
and when no fault discharge point exists in the casing oil, judging that the casing has a ground fault from the sleeve section of the current transformer to the air section of the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910889691.8A CN110676012B (en) | 2019-09-19 | 2019-09-19 | Sleeve wire outlet device, transformer, reactor and sleeve fault judgment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910889691.8A CN110676012B (en) | 2019-09-19 | 2019-09-19 | Sleeve wire outlet device, transformer, reactor and sleeve fault judgment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110676012A CN110676012A (en) | 2020-01-10 |
| CN110676012B true CN110676012B (en) | 2020-10-20 |
Family
ID=69076935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910889691.8A Active CN110676012B (en) | 2019-09-19 | 2019-09-19 | Sleeve wire outlet device, transformer, reactor and sleeve fault judgment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110676012B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096924B (en) * | 2021-03-31 | 2022-07-12 | 广东电网有限责任公司广州供电局 | Power transformer suitable for cable-through type sleeve |
| CN113376563B (en) * | 2021-06-08 | 2022-08-12 | 中国南方电网有限责任公司超高压输电公司 | Transformer lifting seat structure with current transformer test wire and test method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202189105U (en) * | 2011-07-28 | 2012-04-11 | 中国电力科学研究院 | System for testing insulation reliability of ultra-high pressure wire outlet device |
| CN203607237U (en) * | 2013-11-28 | 2014-05-21 | 苏州九正电工有限公司 | Current transformer test device of generator wire outlet casing |
| CN207556674U (en) * | 2017-12-26 | 2018-06-29 | 国网河北省电力有限公司衡水供电分公司 | High voltage side of transformer casing fault detection system and transformer assembly |
| CN109188104A (en) * | 2018-10-12 | 2019-01-11 | 国网陕西省电力公司电力科学研究院 | The dielectric response of paper oil insulation casing not blackouts monitoring system and method |
| CN208985813U (en) * | 2018-12-03 | 2019-06-14 | 西门子变压器（武汉）有限公司 | The bushing lifting seat and its transformer of for transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10027068B2 (en) * | 2016-10-24 | 2018-07-17 | Siemens Aktiengesellschaft | Plug socket with current transformer |
-
2019
- 2019-09-19 CN CN201910889691.8A patent/CN110676012B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202189105U (en) * | 2011-07-28 | 2012-04-11 | 中国电力科学研究院 | System for testing insulation reliability of ultra-high pressure wire outlet device |
| CN203607237U (en) * | 2013-11-28 | 2014-05-21 | 苏州九正电工有限公司 | Current transformer test device of generator wire outlet casing |
| CN207556674U (en) * | 2017-12-26 | 2018-06-29 | 国网河北省电力有限公司衡水供电分公司 | High voltage side of transformer casing fault detection system and transformer assembly |
| CN109188104A (en) * | 2018-10-12 | 2019-01-11 | 国网陕西省电力公司电力科学研究院 | The dielectric response of paper oil insulation casing not blackouts monitoring system and method |
| CN208985813U (en) * | 2018-12-03 | 2019-06-14 | 西门子变压器（武汉）有限公司 | The bushing lifting seat and its transformer of for transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110676012A (en) | 2020-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110676012B (en) | Sleeve wire outlet device, transformer, reactor and sleeve fault judgment method | |
| US12129559B2 (en) | Test station assemblies for monitoring cathodic protection of structures and related methods | |
| JP5135129B2 (en) | Gas insulation equipment | |
| US8299811B2 (en) | Universal front/back post terminal block and test link | |
| CN101615497A (en) | The integral connecting structure of transformer and current sensor | |
| EP3203249B1 (en) | Insulation deterioration monitor device | |
| KR101666832B1 (en) | Facility for testing ac withstand voltage including curved test chamber | |
| CN106374343A (en) | Lightning arrester for rotating radar antennas | |
| CN110426616B (en) | GIS partial discharge detection device and method based on flange bolts | |
| CN103650277B (en) | The supervising device of electrical network, photovoltaic system and operation method for the insulation structure of photovoltaic system | |
| CN210896945U (en) | Sleeve wire outlet device, transformer and reactor | |
| CN103499777A (en) | Ultralow frequency partial discharge detection-based evaluation method and system | |
| CN109060925B (en) | Couple corrosion test device used in high-temperature high-pressure environment | |
| KR200448391Y1 (en) | Cable connector for gas insulated switchgear having detecting a voltage | |
| CN207603177U (en) | A kind of grounding box of recordable discharge time and Leakage Current | |
| CN110879305A (en) | Lightning arrester on-line monitoring junction box | |
| CN115987419A (en) | Special communication antenna mast running state detection device | |
| CN104614645A (en) | GIS and optimization method of integrated earthed ultrahigh-frequency partial discharge sensor of GIS | |
| EP3884242B1 (en) | Apparatus for monitoring temperature and voltage of cable joint of cable connected to gas insulated switchgear, and associated manufacturing method | |
| CN202119865U (en) | Voltage withstanding experiment device for 252kV enclosed type combined electric appliance insulating part | |
| CN204347195U (en) | Sensor is put in Integral grounding type superfrequency office | |
| KR102312569B1 (en) | Adapter for diagnosing leakage current and measuring insulation aging for transformer bushing | |
| CN210347828U (en) | GIS multi-factor combined aging test platform and fault insulator positioning system | |
| CN211720242U (en) | High-voltage cable insulation joint with built-in capacitive electrode | |
| CN114217170B (en) | Lightning invasion switch room positioning device and method based on ground network current distribution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |