NDLI: On the use of doped polyethylene as an insulating material for HVDC cables

Content Provider	IEEE Xplore Digital Library
Author	Khalil, M.S.
Copyright Year	1996
Description	Author affiliation: Coll. of Eng., Sultan Qaboos Univ., Muscat, Oman (Khalil, M.S.)
Abstract	The merits of HVDC power cables with polymeric insulation are well recognized. However, the development of such cables is still hampered due to problems resulting from the complicated dependence of the electrical conductivity of the polymer on the temperature and the DC electric field and the effects of space charge accumulation in this material. Different methods have been suggested to solve these problems yet none of these methods seem to give a conclusive solution. The present report provides a critical review of the previous works reported in the literature concerning the development of HVDC power cables with polymeric insulation. Different aspects of those works are examined and discussed. An account is given on an investigation using low density polyethylene (LDPE) doped with an inorganic additive as a candidate insulating material for HVDC power cables. Preliminary results from measurements of DC breakdown strength and insulation resistivity of both the undoped and the doped materials are presented. It is shown that the incorporation of an inorganic additive into LDPE has improved the performance of the doped material under polarity reversal DC conditions at room temperature. Moreover, the dependency of the insulation resistivity on temperature for the doped material appears to be beneficially modified.
Starting Page	650
Ending Page	656
File Size	418028
Page Count	7
File Format	PDF
ISBN	0780335317
ISSN	1089084X
DOI	10.1109/ELINSL.1996.549429
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-06-16
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Polyethylene HVDC transmission Power cables Polymers Cable insulation Conductivity Conducting materials Plastic insulation Temperature dependence Additives
Content Type	Text
Resource Type	Article

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Development of polymeric insulating materials for HVDC cables using additives: evidence from a multitude of experiments using different techniques

Modification of dependence of DC insulation resistivity of low density polyethylene (LDPE) on temperature and electric field using inorganic additives

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