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UHF Sensor Development for Partial Discharge Exclusively for Measurement in 25.8kV GIS
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 Title & Authors
UHF Sensor Development for Partial Discharge Exclusively for Measurement in 25.8kV GIS
Choi, Mun-Gyu; Cha, Hanju;
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25.8kV GIS part generated by sensors to measure contact an inflow of noise depending on the extent of the measured discharge occurs often not easy. Partial discharge signal measurement sensor suitable for developing a more useful measurements at the scene to this, partial discharge waveform analysis developed a sensor, and to utilize forSensor on the development of the most important is VSWR decided to (voltage standing wave ratio) voltage standing-wave ratio less than 1.5 and decided less than at the full spectrum bands that are measured, this time Return loss, as measured value by absolute criteria 14.0 dB produced the sensor, designed to or more. UHF 1.5~0.5 GHz bandwidth spectrum to be measured in GIS. UHF bands were designed to be able to measure the best signal. Recently, 25.8kV GIS production company has been increasing variety of GIS were made open spacer in partial discharge in accordance with the not very easy to detect the signal. The sensor is designed height of four cm external spacer is attachment GIS in an influx of outside noise measurement, and be so manufactured as to facilitate the least we`ve done. Also, since partial discharge which occur can measure the frequency of the 170kV GIS external partial-discharge signals that occur at the scene of insulation applied to the spacer. Features, and also derived good results using global positioning. Also measured discharge point about sensors that are stable and the reliability of the development and local substation equipment failure occurring signal analysis through the discharge for the prevention of widely. There should be to believe that used.
UHF;Partial discharge;TDR;Sensor;
 Cited by
Gi-jun Park, Jin-yeol Yoon, Sun-geun Goo, "Partial discharge Measurement on 345kV GIS of Power Substation", the Korea Electric Power Corporation, KIEE APP-3, p394-395, 2010, 11.

Seung-Chul Lee, Seung-young Jung, Ja-yoon Koo, Jae-ho Lee, "A Study for the fault Location of Insulation Defects Considering Waveguide Characteristics in GIS" KIEE, Vol 57, No.2, pp252-255, 2008, 2.

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