NDLI: Aging of Polyethylene ADSS Sheath by Low Currents

Content Provider	IEEE Xplore Digital Library
Author	Rowland, S.M. Kopsidas, K. Xin Zhang
Copyright Year	1986
Abstract	The electrical environment of all-dielectric self-supporting cables on overhead power lines presents a challenge to cable materials. It is widely acknowledged that the application on lines of system voltages above 150 kV requires specialist sheath materials to prevent damage as a result of discharges on the cables' surfaces. It is widely held that below this system voltage, polyethylene sheaths are adequate. This is not always the case. However, one such cable which successfully served for 15 years on a 132-kV twin circuit has had its sheath examined. In particular, contact-angle measurements have been made along two span lengths. Even though predicted currents on the sheath are lower than those expected to cause damage, a reduction in contact angle is shown to be closely correlated to predicted current magnitude along the cable spans. An aging process is therefore illustrated, creating changes below levels which would normally be called damage. A 0.5-mA current limit is appropriate for the polyethylene material considered.
Sponsorship	IEEE Power Engineering Society
Starting Page	947
Ending Page	952
Page Count	6
File Size	1309221
File Format	PDF
ISSN	08858977
Volume Number	25
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Aging Polyethylene Optical fiber cables Voltage Poles and towers Conductors Surface cleaning Power cables Surface discharges Pollution measurement transmission lines all-dielectric self-supporting (ADSS) cable CDEGS contact angle current dry-band arcing optical-fiber cables polyethylene surface discharges
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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Implementation of a Solution to the Problem of Dry-Band Arcing on ADSS Cables

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