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Method for ultra-high-frequency measurement of partial discharge, and related device

A partial discharge and ultra-high frequency technology, applied in the field of supporting parts for maintaining ultra-high frequency sensors, can solve the problems of UHF signal deformation and attenuation, and achieve the effect of easy maintenance and repair

Inactive Publication Date: 2015-03-18
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Possible flaws originate from distortion and attenuation of the emitted and measured UHF signal due to spurious reflections of said signal in the substation, especially when the UHF sensor is located inside said substation

Method used

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  • Method for ultra-high-frequency measurement of partial discharge, and related device
  • Method for ultra-high-frequency measurement of partial discharge, and related device
  • Method for ultra-high-frequency measurement of partial discharge, and related device

Examples

Experimental program
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Effect test

Embodiment Construction

[0018] figure 1 Shows a general view of the compartment of the enclosure of the substation (GIS) under the metal enclosure, where the front holding support S for the UHF sensor C is in contact with the window H provided on the wall of the GIS substation. The window H, made of safety glass and having a circular shape, is here fixed rigidly to the casing of the GIS substation by means of a fixing ring F, which is usually screwed into a thread in the casing of the GIS substation.

[0019] figure 2 show the basis figure 1 A diametrical cross-sectional view of the holding support S and the sensor C after the sensor C is in contact with the outer surface of the window H. The retaining support, having a tubular shape to slide around the fixing ring F, consists essentially of two tubular notches separated by a plate P. A first notch located under the plate covers the fixing ring F and the outer part of the window. The sensor C is rigidly fixed (in the direction of the part to whi...

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Abstract

The method involves using a UHF sensor (C) at a point of a gas insulated substation (GiS), where the point is selected at one port-hole (H) of the gas insulated substation. The UHF sensor is provided in contact with an outer surface of the port-hole. A transmitter is arranged for transmitting a signal, and a receiver is connected to an input of a measurement control unit. The transmitter is coupled to an output of the UHF sensor. The transmitter is connected with a receiver via a wired connection or wireless connection. An independent claim is also included for a base.

Description

technical field [0001] The invention relates to a method for measuring ultra-high frequency (abbreviated "UHF") partial discharges by means of UHF sensors at at least one point on a substation beneath a metal enclosure. The invention also relates to a support for holding a UHF sensor according to claim 1 as part of a measuring method. Background technique [0002] The substation (or gas insulated substation, commonly referred to as GIS) under the metal enclosure comprises an electrical disconnecting unit adapted to disconnect or supply power to the high voltage grid. These electrical disconnection units may have a partial discharge (abbreviated "PD"), more precisely a localized partial discharge which under the action of a strong voltage locally short-circuits the insulating gaps separating the conductors. It is important to be able to measure these partial discharge effects, especially on site with substations of the GIS type. A method suitable for this type of measuremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12H01H9/50H02B13/065H02H1/00
CPCH02B13/065H01H33/26G01R31/1254H01H9/50
Inventor 格拉尔德·沙罗吕西安·雅克米耶
Owner SIEMENS AG
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