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- Title
Space change behavior in full scale ±250 kV dc XLPE cables.
- Authors
Hozumi, Naohiro; Takeda, Toshinao; Suzuki, Hiroshi; Fujii, Koichiro; Terashima, Kazuki; Hara, Makoto; Murata, Yoshinao; Watanabe, Kazuo; Yoshida, Manabu
- Abstract
Space charge in full size ±250 kV dc cables was measured using a pulse-electroacoustic method. Two newly developed types of dc XLPE cables with 20 mm thick insulation were subjected to measurements at a dc voltage of 500 kV, keeping the conductor temperature either at room temperature or at 85°C. Qualitative analyses of the space charge distribution and the quantitative analysis of the electric fields in the vicinity of semicon interfaces were made. It was shown that the field in the vicinity of the inner semiconductor tends to increase by 10 to 40% when the polarity of the applied voltage was switched, in the case when the conductor was kept at 85°C. However, the distortion of the electric field was significantly smaller than that expected with conventional XLPE cables. As a result, dc cables are considered to have stable dc characteristics from the viewpoint of space charge behavior. © 1998 Scripta Technica, Electr Eng Jpn, 124(2): 16–28, 1998
- Subjects
ELECTROACOUSTICS; QUANTITATIVE chemical analysis; ELECTRIC fields; SEMICONDUCTORS; FIELD theory (Physics)
- Publication
Electrical Engineering in Japan, 1998, Vol 124, Issue 2, p16
- ISSN
0424-7760
- Publication type
Article
- DOI
10.1002/(SICI)1520-6416(19980730)124:2<16::AID-EEJ3>3.0.CO;2-R