Measurement of Solubility and Water Content of Insulating Oils for HV XLPE Cable Terminations

Author

Liland, K.B. ; Eidnes, K. ; Bjørneklett, K. ; Hvidsten, S.

Author_Institution

SINTEF Energy Res., Norwegian Univ. of Sci. & Technol., Trondheim

fYear

2008

fDate

9-12 June 2008

Firstpage

7

Lastpage

10

Abstract

Water has been found to be one of the the main causes for some service breakdowns of high voltage XLPE cable terminations in Norway. Therefore, measurements of water content have been performed on oil samples taken from several oil-filled housings in service. In addition, measurements of water solubility of three actual oil types have been performed at different relative humidities and temperatures in order to detect the saturation contents. The results show that high water content in the oils in service can be present, and even liquid water was detected. The measurements of water solubility of actual oils show that condensation of water droplets can occur during service. It is therefore recommended to perform maintenance work on such installations with respect to monitor the water content of the insulating oils.

Keywords

XLPE insulation; oil filled cables; solubility; water; high-voltage XLPE cable terminations; insulating oils; liquid water; oil-filled housings; saturation content; solubility measurement; water content measurement; Breakdown voltage; Cable insulation; Humidity; Laboratories; Oil filled cables; Oil insulation; Performance evaluation; Petroleum; Temperature; Viscosity;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2008. ISEI 2008. Conference Record of the 2008 IEEE International Symposium on

Conference_Location

Vancouver, BC

ISSN

1089-084X

Print_ISBN

978-1-4244-2091-9

Electronic_ISBN

1089-084X

Type

conf

DOI

10.1109/ELINSL.2008.4570264

Filename

4570264