NDLI: Assessment of moisture diffusion distance in pressboard insulation within transformer using Fick's law

Content Provider	IEEE Xplore Digital Library
Author	Mukherjee, M. Chakravorti, S.
Copyright Year	2014
Description	Author affiliation: Dept. of Electr. Eng., Jadavpur Univ., Kolkata, India (Mukherjee, M.; Chakravorti, S.)
Abstract	Pressboard insulation is one of the important dielectric media in a transformer. During operation of the transformer, moisture present inside the pressboard or produced as aging by-product starts migrating due to diffusion through the pressboard material. This moisture raises the dielectric dissipation factor and increases the risk of breakdown of the solid insulation. It also lowers the hot spot temperature range for bubble formation and accelerates the thermal aging of pressboard insulation. Thus it is essential to determine the distance diffused by the moisture so as to get an approximate idea of how fast it spreads. Fick's laws of diffusion are well known equations of diffusion. In the present work a particular solution of the Fick's law of diffusion is used to form an equation of the distance diffused in a certain time considering the environmental conditions within a working transformer. The results obtained from the equations using a typical daily load pattern are plotted in order to give an estimate of the actual distance that can be diffused throughout the day and also of the cyclic migration of moisture into and out from the pressboard. The proposed methodology will be helpful in monitoring the moisture location inside the pressboard insulation of a working transformer.
Starting Page	1
Ending Page	4
File Size	391238
Page Count	4
File Format	PDF
ISBN	9781479951413
DOI	10.1109/NPSC.2014.7103795
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-12-18
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transformer insulation Moisture Migration Pressboard Moisture Oil insulation Circuit faults Mathematical model Moisture diffusion Fick's law Power transformer insulation
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A moisture diffusion model for transformer oil and paper

Understanding moisture diffusion process in oil-impregnated pressboard insulation of transformer

Diffusion coefficient in transformer pressboard insulation part 2: mineral oil impregnated

Diffusion coefficient in transformer pressboard insulation part 1: non impregnated pressboard

A review of moisture diffusion coefficients in transformer solid insulation-part 1: coefficients for paper and pressboard

Gas and moisture equilibriums in transformer oil

Moisture diffusion invegetable oil-paper insulation

Dielectric properties of coconut oil impregnated pressboard samples

Creepage discharge performance for high moisture pressboard

Assessment of moisture diffusion distance in pressboard insulation within transformer using Fick's law

Similar Documents

A moisture diffusion model for transformer oil and paper

Understanding moisture diffusion process in oil-impregnated pressboard insulation of transformer

Diffusion coefficient in transformer pressboard insulation part 2: mineral oil impregnated

Diffusion coefficient in transformer pressboard insulation part 1: non impregnated pressboard

A review of moisture diffusion coefficients in transformer solid insulation-part 1: coefficients for paper and pressboard

Gas and moisture equilibriums in transformer oil

Moisture diffusion invegetable oil-paper insulation

Dielectric properties of coconut oil impregnated pressboard samples

Creepage discharge performance for high moisture pressboard

Assessment of moisture diffusion distance in pressboard insulation within transformer using Fick's law