Experimental investigation on the cause of harmfulness of the blue water tree to XLPE cable insulation

G. Katsuta*, A. Toya, Ying Li, M. Okashita, F. Aida, Y. Ebinuma, Y. Ohki

*この研究の対応する著者

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Through investigations made on crosslinked polyethylene (XLPE) insulated power cables that had experienced failures, blue-colored water trees were observed in addition to ordinary white water trees. The blue water tree was found to be much more harmful than the white water tree, since more electrical trees started at the blue trees. Elemental analysis revealed that iron and sulfur exist in the blue tree. In the case of this blue water tree, space charge exists abundantly but only at the tree tip, while no charge signal is observed on the electrode from which the tree starts. This indicates that the conductivity of the blue tree is very high. This is considered to be the main reason of the harmfulness of this tree.

本文言語English
ページ(範囲)887-891
ページ数5
ジャーナルIEEE Transactions on Dielectrics and Electrical Insulation
6
6
DOI
出版ステータスPublished - 1999

ASJC Scopus subject areas

  • 電子工学および電気工学

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