CN107677916B - High-voltage bushing tap grounding protective cover and high-voltage bushing tap - Google Patents
High-voltage bushing tap grounding protective cover and high-voltage bushing tap Download PDFInfo
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- CN107677916B CN107677916B CN201710787161.3A CN201710787161A CN107677916B CN 107677916 B CN107677916 B CN 107677916B CN 201710787161 A CN201710787161 A CN 201710787161A CN 107677916 B CN107677916 B CN 107677916B
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- 230000001681 protective effect Effects 0.000 title claims abstract description 38
- 238000000605 extraction Methods 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 13
- 210000001503 joint Anatomy 0.000 claims description 12
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 5
- 238000012360 testing method Methods 0.000 abstract description 21
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000003990 capacitor Substances 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003449 preventive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Insulators (AREA)
Abstract
The invention relates to a high-voltage bushing end screen grounding protective cover and a high-voltage bushing end screen, which comprise a grounding protective cover inner cover connected with a bushing end screen seat, a grounding protective cover outer cover connected with the grounding protective cover inner cover and an end screen lead extension rod connected with an end screen lead, wherein the end screen lead extension rod penetrates through the grounding protective cover inner cover to be connected with the grounding protective cover outer cover, a measuring coil is arranged between the inner wall of the grounding protective cover inner cover and the end screen lead extension rod, a measuring wire plug is arranged along the outer wall of the grounding protective cover inner cover, an output terminal of the measuring coil is connected with one end of a signal extraction wire, and the other end of the signal extraction wire is connected with the measuring wire plug. The invention not only realizes the measurement of leakage current, but also avoids the end screen of the high-voltage bushing from being exposed outside during routine state maintenance test.
Description
Technical Field
The invention relates to the technical field of high-voltage equipment insulation, in particular to a high-voltage bushing end screen grounding protective cover and a high-voltage bushing end screen.
Background
The main insulation of the high-voltage bushing is mainly a capacitor core which is formed by winding a plurality of layers of capacitor plates according to certain design parameters, and the end screen is the outermost layer of capacitor plates, also called grounding plates. In actual live-line operation of the bushing, in order to realize uniform distribution of an electric field in the bushing, the end screen needs to be in equipotential connection with the ground, namely reliable grounding is needed; when the casing is subjected to routine state maintenance test or preventive test, the end screen of the casing is the only measurement tap of the casing, and the grounding of the end screen needs to be disconnected so as to carry out various test tests.
In recent years, related to the frequent casing accidents caused by the casing production process quality, the operation and the installation and the like, according to incomplete statistics, more than 50% of the accidents are caused by poor grounding of a tail screen, the safety and the stability of a power grid and the power supply reliability are seriously influenced, and huge economic loss and adverse effects are caused. Therefore, on one hand, the state monitoring, evaluation and insulation diagnosis of the sleeve are urgently needed to be realized; on the other hand, the grounding reliability of the end screen of the sleeve needs to be improved, and finally the purposes of improving the operation reliability of the in-service sleeve and ensuring the safe and stable operation of the power grid are achieved.
At present sleeve pipe end screen ground connection is mainly realized by end screen ground connection insulating boot, like chinese utility model patent (204925178U) discloses a high-tension bushing inferior end screen draw-off gear, as shown in fig. 1, this draw-off gear includes: the insulation cover 1, the O-shaped sealing gasket 2, the leading-out terminal 3 and the T-shaped sealing gasket 4; wherein, the insulation cover 1 comprises a micro capacitor and a metal cover; the top end of the micro capacitor is connected with the metal cover, and the bottom end of the micro capacitor is connected with the copper conducting rod; the leading-out terminal 3 comprises a copper conducting rod, a round tube-shaped porcelain insulating medium and a metal fixing part; the copper conducting rod penetrates through the center of the circular tube-shaped porcelain insulating medium, and two ends of the copper conducting rod are respectively connected with the secondary end screen lead and the micro capacitor; the metal fixing part is sleeved outside the round tube-shaped porcelain insulating medium; the T-shaped sealing gasket 4 is hermetically sleeved on the leading-out terminal 3 and the lower edge of the metal fixing part; the O-shaped gasket 2 is hermetically sleeved on the leading-out terminal 3 and the upper edge of the metal fixing part. Although the sleeve can be led out of the potential of the secondary end screen and the good insulation of the lead-out end of the secondary end screen can be ensured, the following problems still exist: the existing end screen grounding insulating cover directly grounds the leakage current flowing out of the end screen lead wire, and the measurement of the leakage current cannot be realized; moreover, after the existing end screen grounding insulating cover is installed, whether the grounding is good or not can not be visually observed or judged in the live running process of the sleeve; in addition, when a routine condition maintenance test or a preventive test (off-line test) is performed on the high-voltage bushing, the existing end screen grounding insulating cover needs to be completely detached, so that the whole end screen is completely exposed in the air, and the end screen is easily affected with damp and the validity of test data is influenced. Meanwhile, the end screen grounding insulating cover is repeatedly disassembled and assembled, so that the problems that the end screen protective cover is not tightly pressed or is in virtual connection and the like are caused by factors such as manual misoperation or abrasion of a device self screw opening and the like, and the end screen grounding is unreliable.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art products, and to provide a high voltage bushing end screen grounding shield and a high voltage bushing end screen which can ensure the appearance of the product even for plastic with large viscosity.
In order to solve the technical problem, the high-voltage bushing end screen grounding protective cover of the invention is arranged on the high-voltage bushing end screen, the high-voltage bushing end screen comprises a bushing end screen seat and an end screen lead positioned on the bushing end screen seat, the grounding shield comprises a grounding shield inner cover connected with the sleeve terminal screen seat, a grounding shield outer cover connected with the grounding shield inner cover and a terminal screen lead extension rod connected with the terminal screen lead, wherein the end screen lead extension rod passes through the grounding shield inner cover to be connected with the grounding shield outer cover, a measuring coil is arranged between the inner wall of the grounding shield inner cover and the end screen lead extension rod, a measuring wire plug is arranged along the outer wall of the grounding shield inner cover, the output terminal of the measuring coil is connected with one end of a signal extraction line, and the other end of the signal extraction line is connected with the measuring line plug.
In one embodiment of the present invention, a light emitting device is further installed along an outer wall of the inner cover of the ground shield, and the light emitting device is connected to the signal extraction line.
In one embodiment of the invention, the middle part of the end screen lead extension rod is provided with a spring component.
In one embodiment of the invention, an insulating sleeve is sleeved outside the end screen lead extension rod, and the insulating sleeve is mounted on the end screen lead extension rod between a contact end of the end screen lead and the spring component.
In one embodiment of the invention, the inner wall of the inner cover of the grounding shield is provided with a shielding liner.
In one embodiment of the invention, an insulation cutting sleeve is arranged between the measuring coil and the shielding lining, and the measuring coil is positioned between the insulation cutting sleeve and the end screen lead extension rod.
In one embodiment of the invention, a first butt seal groove and a butt wire port are arranged at the butt joint of the grounding shield outer cover and the grounding shield inner cover.
In an embodiment of the invention, a second butt-joint sealing groove and a connecting screw port are arranged at a butt joint of the inner cover of the grounding shield and the sleeve tail screen seat.
The invention also discloses a high-voltage bushing end screen, which comprises a bushing end screen seat, an end screen lead positioned on the bushing end screen seat and the high-voltage bushing end screen grounding protective cover.
In one embodiment of the invention, the outer wall of the end screen lead is sleeved with an end screen lead insulating sleeve.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the high-voltage bushing end screen grounding protective cover and the high-voltage bushing end screen can provide safe and reliable leakage current measurement data for online monitoring of the state of the high-voltage bushing on the premise of not changing the original reliable grounding structure of the bushing end screen.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic diagram of a prior art end screen ground shield;
figure 2 is a schematic view of a high voltage bushing end screen grounding shield according to the present invention;
figure 3 is a schematic view of a high voltage bushing end screen according to the present invention;
figure 4 is a schematic view of the connection of the high voltage bushing end shield of the present invention to the grounding shield.
Reference numbers in the figures: 1-an insulating cover, 2-O-shaped sealing gaskets, 3-leading-out terminals, 4-T-shaped sealing gaskets, 10-an inner cover of a grounding protective cover, 11-a measuring coil, 12-a measuring wire plug, 13-a signal extraction wire, 14-a light-emitting device, 15-a shielding lining, 16-an insulating clamping sleeve, 17-a first butt sealing groove, 20-an outer cover of the grounding protective cover, 21-a second butt sealing groove, 30-a tail screen lead extension rod, 31-a spring component, 32-an insulating sleeve, 40-a high-voltage sleeve tail screen, 41-a sleeve tail screen seat, 42-a tail screen lead and 43-a tail screen lead insulating sleeve.
Detailed Description
The first embodiment is as follows:
as shown in fig. 2, 3 and 4, the present embodiment provides a high voltage bushing end screen grounding shield, which is installed on a high voltage bushing end screen 40, where the high voltage bushing end screen 40 includes a bushing end screen seat 41 and an end screen lead 42 located on the bushing end screen seat 41, the grounding shield includes a grounding shield inner cover 10 connected to the bushing end screen seat 41, a grounding shield outer cover 20 connected to the grounding shield inner cover 10, and an end screen lead extension rod 30 connected to the end screen lead 42, where the end screen lead extension rod 30 passes through the grounding shield inner cover 10 and is connected to the grounding shield outer cover 20, a measurement coil 11 is installed between an inner wall of the grounding shield inner cover 10 and the end screen lead extension rod 30, a measurement wire plug 12 is installed along an outer wall of the grounding shield 10, an output terminal of the measurement coil 11 is connected to one end of a signal extraction wire 13, the other end of the signal extraction line 13 is connected with the measuring line plug 12.
The high-voltage bushing end screen grounding shield of the embodiment is installed on a high-voltage bushing end screen 40, the high-voltage bushing end screen 40 includes a bushing end screen seat 41 and an end screen lead 42 located on the bushing end screen seat 41, the grounding shield includes a grounding shield inner cover 10, a grounding shield outer cover 20 and an end screen lead extension rod 30, wherein the bushing end screen seat 41 is connected to the grounding shield inner cover 10, the grounding shield inner cover 10 is connected to the grounding shield outer cover 20, the grounding shield outer cover 20 is a reliable grounding body, so as to ensure safe and reliable grounding of the high-voltage bushing end screen 40, the end screen lead 42 is connected to the end screen lead extension rod 30, so that the bushing end screen lead is extended, when a high-voltage bushing is actually operated in a live state, a leakage current of a main insulation of the high-voltage bushing is transmitted to the end screen lead extension rod 30 through the end screen lead 42, the end screen lead extension rod 30 is connected to the ground shield outer cover 20 through the ground shield inner cover 10, and, in particular, the grounding shield outer cover 20 is installed on the grounding shield inner cover 10 and the end screen lead extension rod 30, since the sleeve end screen seat 41 is a grounding body, and the sleeve end screen seat 41 is connected with the grounding shield inner cover 10, the grounding shield inner cover 10 is connected with the grounding shield outer cover 20, and the grounding shield outer cover 20 is connected with the end screen lead extension rod 30, so that the end screen lead extension rod 30 can be reliably grounded, when the high voltage bushing is subjected to routine condition maintenance tests or preventive tests (off-line tests), the high voltage bushing end screen is not completely exposed to air, further, the test can be carried out even in rainy days or wet days, and the time utilization rate in the field power failure process is improved; in addition, during the test, the grounding shield inner cover 10 does not need to be disassembled as a whole, the grounding shield inner cover 10 still protects the end screen lead 42 from the influence of the external environment, and the related test can be carried out only by opening the grounding shield outer cover 20, so that the high-voltage bushing end screen 40 can be protected, and the times of disassembling and assembling the high-voltage bushing end screen grounding shield are effectively reduced; the measuring device is characterized in that a measuring coil 11 is installed between the inner wall of the inner cover 10 of the grounding shield and the end screen lead extension rod 30, a measuring wire plug 12 is installed along the outer wall of the inner cover 10 of the grounding shield, an output terminal of the measuring coil 11 is connected with one end of a signal extraction wire 13, the other end of the signal extraction wire 13 is connected with the measuring wire plug 12, the measuring coil 11 measures leakage current flowing through the end screen lead extension rod 30 through the electromagnetic induction principle, corresponding output signals are transmitted to the measuring wire plug 12 through the signal extraction wire 13, the measuring wire plug 12 is used for online monitoring of the state of the high-voltage bushing, safe and reliable leakage current measuring data are provided for online monitoring of the state of the high-voltage bushing, and the effect of live real-time monitoring of the state of the high-voltage bushing is achieved.
In order to visually judge the grounding condition of the end screen by visual observation, a light-emitting device 14 is further installed along the outer wall of the grounding shield inner cover 10, the light-emitting device 14 is connected with the signal extraction line 13, the leakage current flowing through the end screen lead extension rod 30 is transmitted to the light-emitting device 14 through the signal extraction line 13, a signal output to the light-emitting device 14 provides direct current input voltage for the light-emitting device 14 through a rectification module, so that the light-emitting device 14 emits light, the light-emitting device 14 can obtain stable input voltage only when the grounding of the end screen is reliable, so that the grounding condition of the end screen can be visually judged by visual observation of the light-emitting condition of the light-emitting device 14, and if the light-emitting device 14 flickers or is not bright, the grounding condition or the non-grounding condition of the end screen of the high-voltage bushing can be judged, the warning function is provided for field inspection personnel.
The middle part of the end screen lead extension rod 30 is provided with a spring component 31, when the grounding shield cover 20 compresses the end screen lead extension rod 30, the spring component 31 can apply an opposite thrust, and therefore tight connection between the grounding shield cover 20 and the end screen lead extension rod 31 is guaranteed. In order to avoid that a leakage current signal of the end screen lead extension rod 30 is directly grounded through the grounding shield inner cover 10, an insulating sleeve 32 is sleeved outside the end screen lead extension rod 30, and because the contact surface between the end screen lead extension rod 30 and the grounding shield inner cover 10 is small, the phenomenon of poor contact is easy to occur, the insulating sleeve 32 is installed on the end screen lead extension rod 30 between the contact end of the end screen lead 42 and the spring component 31, so that the effect of insulating the outer wall of the grounding shield inner cover 10 is achieved.
The inner wall of the grounding shield inner cover 10 is provided with a shielding lining 15, and the shielding lining 15 is a magnetic shielding lining with high magnetic conductivity, so that the measurement data can be prevented from being interfered by an external strong magnetic field. An insulation cutting sleeve 16 is arranged between the measuring coil 11 and the shielding lining 15, and the measuring coil 11 is positioned between the insulation cutting sleeve 16 and the end screen lead extension rod 30, so that the measuring coil 11 and the insulation are fixed.
The butt joint of the grounding shield inner cover 10 and the sleeve terminal screen seat 41 is provided with a first butt joint sealing groove 17 and a connecting screw hole, so that the grounding shield inner cover 10 and the sleeve terminal screen seat 41 can be well connected and reliably sealed. The butt joint of the grounding shield outer cover 20 and the grounding shield inner cover 10 is provided with a second butt joint sealing groove 21 and a butt joint screw hole for realizing good connection and reliable sealing of the grounding shield inner cover 10 and the grounding shield outer cover 20.
Example two:
the present embodiment provides a high voltage bushing end shield, comprising a bushing end shield base 41, an end shield lead 42 located on the bushing end shield base 41, and the high voltage bushing end shield grounding shield according to the first embodiment. All the advantages of the first embodiment are achieved and the second embodiment is also achieved in that the high voltage bushing end shield comprises the grounding shield as described in the first embodiment. In addition, the outer wall of the end screen lead 42 is sleeved with an end screen lead insulating sleeve 43, and the sleeve end screen seat 41 is a grounding body under the insulating effect, so that reliable grounding of the high-voltage sleeve end screen 40 is facilitated.
In summary, the technical scheme of the invention has the following advantages:
1. the high-voltage bushing end screen grounding protective cover is arranged on a high-voltage bushing end screen, the high-voltage bushing end screen comprises a bushing end screen seat and an end screen lead positioned on the bushing end screen seat, the grounding protective cover comprises a grounding protective cover inner cover, a grounding protective cover outer cover and an end screen lead extension rod, wherein the bushing end screen seat is connected with the grounding protective cover inner cover, the grounding protective cover inner cover is connected with the grounding protective cover outer cover, the grounding protective cover outer cover is a reliable grounding body, so that the safe and reliable grounding of the high-voltage bushing end screen is ensured, the end screen lead is connected with the end screen lead extension rod to extend the bushing end screen lead, and when the high-voltage bushing is actually electrified, the leakage current of the main insulation of the high-voltage bushing is transmitted to the end screen lead extension rod through the end screen lead, the end screen lead extension rod penetrates through the inner cover of the grounding protective cover to be connected with the outer cover of the grounding protective cover, and the sleeve end screen seat is a grounding body, so that the end screen lead extension rod can be reliably grounded, and when a routine state overhaul test or a preventive test (an off-line test) is carried out on the high-voltage sleeve, the end screen of the high-voltage sleeve cannot be completely exposed in the air, so that the test can be carried out even in rainy or humid weather, and the time utilization rate in the field power failure process is improved; in addition, during the test, the grounding shield inner cover does not need to be integrally disassembled, and the related test can be carried out only by opening the grounding shield outer cover, so that the high-voltage bushing end screen can be protected, and the times of disassembling and assembling the grounding shield of the high-voltage bushing end screen are effectively reduced; the measuring device comprises a grounding protective cover, a signal extraction wire, a measuring wire plug connector, a measuring coil, a measuring wire, a high-voltage bushing state online monitoring connector and a high-voltage bushing state online monitoring system.
2. The high-voltage bushing end screen grounding protective cover is also provided with a light-emitting device along the outer wall of the grounding protective cover inner cover, and the light-emitting device is connected with the signal extraction line, the leakage current flowing through the extension rod of the end screen lead wire, the signal is transmitted to the light-emitting device through the signal extraction line, the signal output to the light-emitting device provides direct current input voltage for the light-emitting device through the rectifying module, so that the light-emitting device emits light, and only when the end screen is reliably grounded, the light-emitting device can obtain stable input voltage, so that the end screen grounding condition can be visually judged by observing the light-emitting condition of the light-emitting device by naked eyes, if the light-emitting device flickers or is not bright, the condition that the high-voltage bushing end screen is poorly grounded or ungrounded can be judged, and the function of warning field inspection personnel is achieved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The utility model provides a high-tension bushing end screen ground connection protection casing, installs on the high-tension bushing end screen, the high-tension bushing end screen includes the terminal screen seat of sleeve pipe and is located end screen lead wire on the terminal screen seat of sleeve pipe, its characterized in that: the grounding protective cover comprises a grounding protective cover inner cover connected with the sleeve terminal screen seat, a grounding protective cover outer cover connected with the grounding protective cover inner cover and a terminal screen lead extension rod connected with the terminal screen lead, wherein the terminal screen lead extension rod penetrates through the grounding protective cover inner cover to be connected with the grounding protective cover outer cover, a measuring coil is installed between the inner wall of the grounding protective cover inner cover and the terminal screen lead extension rod, a measuring line plug is installed along the outer wall of the grounding protective cover inner cover, an output terminal of the measuring coil is connected with one end of a signal extraction line, and the other end of the signal extraction line is connected with the measuring line plug.
2. The high voltage bushing tap grounding shield of claim 1, wherein: and a light-emitting device is further installed along the outer wall of the inner cover of the grounding shield and is connected with the signal extraction line.
3. The high voltage bushing tap grounding shield of claim 1, wherein: and a spring component is arranged in the middle of the end screen lead wire extension rod.
4. A high voltage bushing tap grounding shield as claimed in claim 3, wherein: an insulating sleeve is sleeved outside the end screen lead extension rod and is arranged on the end screen lead extension rod between the end screen lead extension rod and the spring component.
5. The high voltage bushing tap grounding shield of claim 1, wherein: and a shielding lining is arranged on the inner wall of the inner cover of the grounding shield.
6. The high voltage bushing tap grounding shield of claim 5, wherein: an insulation clamping sleeve is arranged between the measuring coil and the shielding lining, and the measuring coil is located between the insulation clamping sleeve and the end screen lead extension rod.
7. The high voltage bushing tap grounding shield of claim 1, wherein: the butt joint of the grounding shield outer cover and the grounding shield inner cover is provided with a first butt joint sealing groove and a butt joint screw hole.
8. The high voltage bushing tap grounding shield of claim 1, wherein: and a second butt joint sealing groove and a connecting screw port are formed in the butt joint of the grounding shield inner cover and the sleeve terminal screen seat.
9. A high voltage bushing end screen, includes bushing end screen seat and is located end screen lead wire on the bushing end screen seat, its characterized in that: further comprising a high voltage bushing end screen grounding shield as claimed in any of claims 1-8.
10. A high voltage bushing tap as claimed in claim 9, wherein: and the outer wall of the end screen lead is sleeved with an end screen lead insulating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710787161.3A CN107677916B (en) | 2017-09-04 | 2017-09-04 | High-voltage bushing tap grounding protective cover and high-voltage bushing tap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710787161.3A CN107677916B (en) | 2017-09-04 | 2017-09-04 | High-voltage bushing tap grounding protective cover and high-voltage bushing tap |
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| CN107677916A CN107677916A (en) | 2018-02-09 |
| CN107677916B true CN107677916B (en) | 2020-07-14 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3618086B1 (en) | 2018-08-30 | 2021-04-28 | ABB Power Grids Switzerland AG | Shield for a terminal of a high-voltage electrical device and method for operating the same |
| CN110208637B (en) * | 2019-06-20 | 2021-04-20 | 国网天津市电力公司电力科学研究院 | Isolated online monitoring device and method for direct-current bushing tap grounding |
| CN113903535B (en) * | 2021-09-01 | 2023-08-25 | 深圳供电局有限公司 | High-voltage bushing end screen grounding device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1028306A (en) * | 1996-07-10 | 1998-01-27 | Hitachi Electric Syst:Kk | Earth switch |
| CN201654071U (en) * | 2009-11-25 | 2010-11-24 | 福建和盛高科技产业有限公司 | Wiring terminal device of transformer bushing tap |
| CN201975689U (en) * | 2011-01-28 | 2011-09-14 | 北京仪能科思科技发展有限公司 | Novel high voltage equipment bushing tap grounding device |
| CN102540034A (en) * | 2012-03-16 | 2012-07-04 | 甘肃电力科学研究院 | High-voltage transformer bushing tap grounding on-line monitoring device |
| CN202661488U (en) * | 2012-05-22 | 2013-01-09 | 山东电力集团公司济南供电公司 | Special end screen leading out structure for online monitoring |
| CN105469934A (en) * | 2015-12-24 | 2016-04-06 | 江苏神马电力股份有限公司 | Tap grounding apparatus and transformer bushing with same |
| CN206022653U (en) * | 2016-09-26 | 2017-03-15 | 国网四川省电力公司成都供电公司 | A kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction |
-
2017
- 2017-09-04 CN CN201710787161.3A patent/CN107677916B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1028306A (en) * | 1996-07-10 | 1998-01-27 | Hitachi Electric Syst:Kk | Earth switch |
| CN201654071U (en) * | 2009-11-25 | 2010-11-24 | 福建和盛高科技产业有限公司 | Wiring terminal device of transformer bushing tap |
| CN201975689U (en) * | 2011-01-28 | 2011-09-14 | 北京仪能科思科技发展有限公司 | Novel high voltage equipment bushing tap grounding device |
| CN102540034A (en) * | 2012-03-16 | 2012-07-04 | 甘肃电力科学研究院 | High-voltage transformer bushing tap grounding on-line monitoring device |
| CN202661488U (en) * | 2012-05-22 | 2013-01-09 | 山东电力集团公司济南供电公司 | Special end screen leading out structure for online monitoring |
| CN105469934A (en) * | 2015-12-24 | 2016-04-06 | 江苏神马电力股份有限公司 | Tap grounding apparatus and transformer bushing with same |
| CN206022653U (en) * | 2016-09-26 | 2017-03-15 | 国网四川省电力公司成都供电公司 | A kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction |
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| Publication number | Publication date |
|---|---|
| CN107677916A (en) | 2018-02-09 |
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