NDLI: Investigation of the Evaluation of the PD Severity and Verification of the Sensitivity of Partial-Discharge Detection Using the UHF Method in GIS

Content Provider	IEEE Xplore Digital Library
Author	Wensheng Gao Dengwei Ding Weidong Liu Xinhong Huang
Copyright Year	1986
Abstract	The measurement of partial discharge (PD) using ultra-high frequency (UHF) method is considered an effective approach to monitor the online condition of the equipment, which is used to facilitate the detection of incipient defects in gas-insulated switchgear (GIS). In this paper, in order to assess the severity of PD defects using UHF method, the actual 220-kV GIS were subjected to experimentation. The PD was measured simultaneously by using the UHF method and the IEC60270 measurement technique. The combined measurement has been carried out on different defects in PD test cells, including the floating metal, metallic protrusion, and void in epoxy resin. The inner coupler installed in the GIS tank, and the outer coupler placed outside the spacer, are used to measure the UHF signal. The relationship of the apparent charge and the amplitude of the time-domain signal, and the integral energy from 300 MHz to 1.6 GHz of the signal induced by PD in GIS are analyzed thoroughly. In this way, the severity of PD can be quantified using the UHF signal. In addition, to verify the sensitivity of the UHF detection method, a pulse generator with a rise time of about 500 ps is designed. The GIGRE method for the verification of sensitivity, which is used worldwide, is applied in the experiment. The results of the pulse generator experiment are compared to the results produced by the actual discharge sources, and several possible approaches of improving this method are proposed.
Sponsorship	IEEE Power Engineering Society
Starting Page	38
Ending Page	47
Page Count	10
File Size	2157822
File Format	PDF
ISSN	08858977
Volume Number	29
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Partial discharges Couplers Electrodes Metals UHF measurements Discharges (electric) Correlation verification of sensitivity Evaluation of severity gas-insulated switchgear (GIS) IEC60270 partial discharge (PD) ultra-high frequency (UHF) method
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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Research on the Typical Partial Discharge Using the UHF Detection Method for GIS

New aspects of UHF PD diagnostics on gas-insulated systems

Fundamental differences of the PD measurement according to IEC 60270 and in UHF range

Study of the online monitoring for GIS partial discharge based on UHF method

Development of a loop-type partial discharge sensor embedded in insulation material of a 245 kV-class GIS

Emission and propagation mechanisms of PD pulses for UHF and traditional electrical measurements

Improving the sensitivity verification method of the UHF PD detection technique for GIS

UHF sensor optimization used for detecting partial discharge emitted electromagnetic wave in gas insulated switchgear

Development of UHF PD monitoring system based on FPGA

Investigation of the Evaluation of the PD Severity and Verification of the Sensitivity of Partial-Discharge Detection Using the UHF Method in GIS

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Research on the Typical Partial Discharge Using the UHF Detection Method for GIS

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Fundamental differences of the PD measurement according to IEC 60270 and in UHF range

Study of the online monitoring for GIS partial discharge based on UHF method

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