High voltage bushing end screen grounding protective cover and high voltage bushing end screen

A technology of high-voltage bushing and protective cover, which is applied in the field of high-voltage equipment insulation

Active Publication Date: 2018-02-09
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem of defects in the products in the prior art so as to provide a high-

Method used

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  • High voltage bushing end screen grounding protective cover and high voltage bushing end screen
  • High voltage bushing end screen grounding protective cover and high voltage bushing end screen
  • High voltage bushing end screen grounding protective cover and high voltage bushing end screen

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Embodiment 1

[0025] Such as figure 2 and image 3 as well as Figure 4 As shown, this embodiment provides a high voltage bushing end screen grounding shield, which is installed on the high voltage bushing end screen 40. The high voltage bushing end screen 40 includes a bushing end screen seat 41 and a The end screen lead 42 on the screen base 41, the grounding shield includes the grounding shield inner cover 10 connected to the end screen base 41 of the bushing, and the grounding shield outer cover 20 connected to the grounding shield inner cover 10 And the last screen lead extension rod 30 connected with the last screen lead 42, wherein the last screen lead extension rod 30 passes through the ground shield inner cover 10 and is connected with the ground shield outer cover 20, and the ground shield A measuring coil 11 is installed between the inner wall of the inner cover 10 of the cover and the extension rod 30 of the end screen lead wire, and a measuring line plug connector 12 is inst...

Embodiment 2

[0032] This embodiment provides a high-voltage bushing end shield, including a bushing end shield seat 41, an end shield lead wire 42 located on the bushing end shield seat 41, and the high-voltage bushing end shield grounding protection described in Embodiment 1. cover. Since the end screen of the high-voltage bushing includes the grounding shield described in the first embodiment, all the advantages of the first embodiment are also shared by the second embodiment. In addition, the outer wall of the end screen lead 42 is covered with an end screen lead insulation sleeve 43, through the effect of insulation, the end screen seat 41 of the bushing is a grounding body, which is beneficial to the end screen 40 of the high voltage bushing. Reliable grounding.

[0033] In summary, the technical solution of the present invention has the following advantages:

[0034] 1. The high-voltage bushing end screen grounding protective cover of the present invention is installed on the high-...

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Abstract

The invention relates to a high voltage bushing end screen grounding protective cover and a high voltage bushing end screen. The high voltage bushing end screen grounding protective cover comprises agrounding protective cover internal cover which is connected with a bushing end screen base, a grounding protective cover external cover which is connected with the grounding protective cover internalcover and an end screen lead extension rod which is connected with an end screen lead. The end screen lead extension rod penetrates through the grounding protective cover internal cover to be connected with the grounding protective cover external cover. A measurement coil is installed between the internal wall of the grounding protective cover internal cover and the end screen lead extension rod.A measurement line connecting plug is installed along the external wall of the grounding protective cover internal cover. The output terminal of the measurement coil is connected with one end of a signal extraction line. The other end of the signal extraction line is connected with the measurement line connecting plug. Measurement of leakage current can be realized, and the situation that the high voltage bushing end screen is exposed to the outside can be avoided in the routine state maintenance test.

Description

technical field [0001] The invention relates to the technical field of high-voltage equipment insulation, in particular to a high-voltage bushing end screen grounding shield and a high-voltage bushing end screen. Background technique [0002] The main insulation of the high-voltage bushing is mainly the capacitor core, which is wound by multi-layer capacitor plates according to certain design parameters, and the last screen is the outermost layer of capacitor plates, also known as the ground plate. In the actual live operation of the bushing, in order to realize the uniform distribution of the electric field inside the bushing, the end screen must be equipotentially connected to the earth, that is, it needs to be reliably grounded; The end screen of the tube is the only measurement tap of the bushing, and the end screen needs to be untied for grounding in order to carry out various tests. [0003] In recent years, bushing accidents caused by bushing production process quali...

Claims

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Application Information

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IPC IPC(8): G01R31/02G01R1/04
CPCG01R1/0416G01R31/50
Inventor 罗晓庆许佐明谢雄杰胡伟尹朋博
Owner CHINA ELECTRIC POWER RES INST
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