NDLI: The effect of partial discharge by-products on the dielectric frequency response of oil-paper insulation comprising of a small cavity

Content Provider	IEEE Xplore Digital Library
Author	Kiiza, R.C. Niasar, M.G. Nikjoo, R. Wang, X. Edin, H.
Copyright Year	1994
Abstract	This work investigates the effect of alternating current partial discharge (AC PD) byproducts on the dielectric frequency response (DFR) of oil-paper insulation comprising of a small cavity, in the frequency range of 1.0 mHz to 1.0 kHz. The investigations were done by utilizing experimental results in combination with a Finite Element Method (FEM) model. The results presented in this paper show that ageing by-products in the cavity (PD stressed volume) alone will not result into the change in DFR of oil-paper insulation. According to simulation results, the significant change in the DFR results is mainly caused by PD by-products (positive and negative charges, and electrons) which tend to conduct or diffuse into the bulk of oil-paper insulation. The change in a dissipation factor curve due to PD by-products was observed to occur mainly in the middle and low frequency regions. The results indicate that the dissipation factor curves in the middle and low frequency regions depend on the level of PD by-products in oil and paper, respectively.
Sponsorship	National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA
Starting Page	2923
Ending Page	2930
Page Count	8
File Size	449864
File Format	PDF
ISSN	10709878
Volume Number	22
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
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 Insulation Cavity resonators Dielectrics Aging Mathematical model Conductivity dissipation factor Cavity dielectric frequency response (DFR) partial discharge oil-paperinsulation Finite Element Methods (FEM)
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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