Studies on the effects of moisture and ageing on charge de-trapping properties of oil-impregnated pressboard based on IRC measurement

Studies on the effects of moisture and ageing on charge de-trapping properties of oil-impregnated pressboard based on IRC measurement

The dielectric properties of oil-paper insulation degrade due to moisture ingression and ageing. This degradation significantly impacts the space charge accumulation and charge trapping behaviour in the insulation, which are vital parameters for insulation health under the high-voltage direct curren...

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Bibliographic Details
Main Authors: Nasirul Haque, Sovan Dalai, Biswendu Chatterjee, Sivaji Chakravorti
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:High Voltage
Subjects:
space charge
moisture
transformer oil
power transformer insulation
paper
ageing
dielectric materials
composite materials
oil-pressboard insulation
dipole relaxation process
IRC measurement
frequency domain spectroscopy measurements
oil-impregnated pressboard specimens
moisture contents
trap depth
trapped charge distribution
shallow traps
dielectric properties
moisture ingression
space charge accumulation
insulation health
high-voltage direct current environment
isothermal relaxation current
conventional IRC model
dipolar relaxation
de-trapping behaviour
ageing conditions
oil-paper insulation degradation
moisture effects
charge de-trapping properties
composite dielectric
Online Access:https://digital-library.theiet.org/content/journals/10.1049/hve.2018.5095

Internet

https://digital-library.theiet.org/content/journals/10.1049/hve.2018.5095

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