NDLI: Study on space charge and electrical conductivity of polypropylene insulation material

Content Provider	IEEE Xplore Digital Library
Author	Zhe Li Jin Gong Weikang Cao Gehao Sheng Xiuchen Jiang
Copyright Year	2015
Description	Author affiliation: Dept. of Electr. Eng., Shanghai Jiao Tong Univ., Shanghai, China (Zhe Li; Jin Gong; Weikang Cao; Gehao Sheng; Xiuchen Jiang)
Abstract	The electrical and thermal characteristic of isotactic polypropylene (i-PP) is revealed to be superior to polyethylene (PE), and i-PP is suitable for recycle use as the recent environmental requirement. The electrical characteristic of PP are investigated and studied in this paper. A kind of specimen of Isotactic polypropylene was prepared for space charge and electrical conductivity experiments, which was expected to be insulation of DC cable. It is found that electrical conductivity increase with temperature of specimen. The value of high field conductivity under 90°C is three times of that under room temperature. Space charge experiments were investigated by PEA devices, and few volume of space charge appeared in PP under low electrical field (10kV/mm and 20kV/mm). A lot of Heteropolar space charges appeared in PP under electrical field of 50kV/mm. During the process of short circuit or discharging, it is found that space charge in specimen can be released completely, rapidly after half hour's charging time under electrical field of 10kV/mm and 20kV/mm. However, a lot of space charge remains inside specimen of pp after half hour's charging time under electrical field of 50kV/mm.
Starting Page	871
Ending Page	874
File Size	1021397
Page Count	4
File Format	PDF
ISSN	21609241
e-ISBN	9781479989034
DOI	10.1109/ICPADM.2015.7295411
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-19
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cable insulation Conductivity DC cable isotactic polypropylene electrical conductivity temperature space charge
Content Type	Text
Resource Type	Article

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