Condition assessment of XLPE insulated cables based on polarization/depolarization current method

The water tree is one of the key factors leading to the insulation property deterioration in cross-linked polyethylene (XLPE) cables. An accelerated ageing experiment has been performed to produce water trees with the purpose of ageing the full-size XLPE cable under the high-frequency electric field...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2016-04, Vol.23 (2), p.721-729
Main Authors: Ye, Gang, Li, Hua, Lin, Fuchang, Tong, Jin, Wu, Xiaogang, Huang, Zeqi
Format: Article
Language:English
Subjects:
Accelerated aging
Aging
Cable insulation
Cables
Conservation
Cross-linked polyethylene
Current measurement
Depolarization
diagnostic indicator
Diagnostic systems
Electrical insulation
Full-size cable
loss factor
Polarization
Polarization and Depolarization Current
Power cables
Rationing
Trees
Trees - insulation
water tree
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The water tree is one of the key factors leading to the insulation property deterioration in cross-linked polyethylene (XLPE) cables. An accelerated ageing experiment has been performed to produce water trees with the purpose of ageing the full-size XLPE cable under the high-frequency electric field. Based on Polarization and Depolarization Current (PDC) method, the diagnostic tests are employed to evaluate the ageing extent of the cable subjected to water tree at different ageing time. Results show that the average length of water trees is proportional to the ageing time, and thus the experiment is effective to accelerate the growth of water trees. Furthermore, such various diagnostic indicators as the I*t~lnt curves, the loss factor at different frequency, have their rules to assess the ageing condition of the cable with the duration of ageing time. Therefore, information obtained from PDC current can be used for determining the ageing extent of the cables.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2015.004782