Thermal degradation characteristics of oil-filled cable joint with extremely degraded tan Delta d oil

Much of oil-filled (OF) cable has been used for a long time as 66- to 500-kV extrahigh-voltage cable. Sometimes we can see extremely degraded tan Delta *d oil (several tens of percent of tan Delta *d, for example) in joint boxes, etc. The values of tan Delta *d calculated by a simple combination mod...

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Veröffentlicht in:	Electrical engineering in Japan 2012-01, Vol.178 (1), p.1-10
Hauptverfasser:	Ide, Kenichi, Nakade, Masahiko, Takahashi, Tohru, Nakajima, Takenori
Format:	Artikel
Sprache:	eng
Schlagworte:	Cables Degradation Electrical engineering Insulation On-line systems Online Thermal degradation
Online-Zugang:	Volltext
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