Self-shielding grounding line set device for extra-high voltage tests

A hub device, a technology for testing, applied in the direction of connection, conductive connection, electrical component connection, etc., can solve problems such as partial discharge signal interference, and achieve the effect of reducing local temperature and eddy current loss

Active Publication Date: 2015-03-11
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a self-shielding grounding wire collection device for UHV testing, which solves the technical problem that partial discharge signal interference is easily generated when performing partial discharge testing on multiple UHV equipment

Method used

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  • Self-shielding grounding line set device for extra-high voltage tests
  • Self-shielding grounding line set device for extra-high voltage tests

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Embodiment Construction

[0009] The present invention is described below in conjunction with accompanying drawing:

[0010] A self-shielding grounding wire collection device for UHV testing, including a metal hemispherical cover 1 for grounding shielding, left insulating feet 10 and right insulating feet 11 set on the ground, and the metal hemispherical cover 1 is fastened to the left insulating On the top of the pad 10 and the right insulating pad 11, a general grounding post 2 is fixedly arranged at the center point of the inner wall of the metal hemispherical cover body 1, and the general grounding post 2 is arranged in the vertical direction. The lower end is connected with the ground wire, and a plurality of ground wire posts are arranged at equal arc intervals on the concentric circle of the inner wall of the metal hemispherical cover body 1, and an electromagnetic induction eddy current shielding seam 9 is arranged on the metal hemispherical cover body 1, The electromagnetic induction eddy curr...

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Abstract

The invention discloses a self-shielding grounding line set device for extra-high voltage tests, and solves the problems that disturbance of partial discharging signals is easy to produce when partial discharging tests are performed on a plurality of extra-high voltage devices. A hemispherical metal cover body (1) is buckled on a left isolating foot pad (10) and a right isolating foot pad (11); a total grounding line column (2) is fixedly arranged at the center point of the inner wall of the hemispherical metal cover body (1); the total grounding line column (2) is vertically arranged, and the lower end of the total grounding line column (2) is connected with a grounding line; a plurality of grounding columns are arranged on an concentric circle of the inner wall of the hemispherical metal cover body (1) at equal radian internals; and an electro-magnetic induction eddy shielding shed (9) is arranged on the hemispherical metal cover body (1), and the width of the electro-magnetic induction eddy shielding shed (9) ranges from 1mm to 5mm. With the self-shielding grounding line set device, the problem of the disturbance of the partial discharging signals generated from tests in an extra-high voltage transformer substation and an extra-high voltage laboratory is solved.

Description

technical field [0001] The invention relates to a grounding device for ultra-high voltage equipment testing, in particular to a device which is used in a plurality of equipment such as ultra-high voltage substations and laboratories and requires reliable grounding of multiple devices. Background technique [0002] In UHV equipment tests, one-point grounding refers to providing a common common ground potential reference point for multiple electrical equipment. Since multiple electrical devices share a common ground potential reference point, different devices will not form ground loops, and thus will not cause signal interference between devices. In the existing partial discharge test of UHV equipment, it is difficult to reliably ground the test equipment such as partial discharge tester, booster device, and voltage divider, and it is easy to form a ground loop in the test circuit to generate partial discharge. Signal interference directly affects the test results and the no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R11/00H01R11/01H01R4/64
Inventor 俞华王天正王志鹏刘永鑫
Owner STATE GRID CORP OF CHINA
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