The effect of temperature gradient on the dielectric properties of insulating fluids

Author

Fofana, I. ; Wasserberg, V. ; Borsi, H. ; Gockenbach, E.

Author_Institution

Quebec Univ., Chicoutimi, Que.

fYear

2006

fDate

11-14 June 2006

Firstpage

523

Lastpage

526

Abstract

Insulating liquid in power equipment becomes increasingly contaminated as the equipment ages in service. Insulation liquids ageing is a four dimensional problem due to dielectric, chemical, thermal and electro mechanic stresses, which are highly depending on operational conditions. The aging rate depends thereby on several factors such as temperature, light, oxygen, catalysts, loadings as well as gas and water content of the insulating liquid. Among those parameters, temperature is recognized to play a key role in the ageing of liquid insulation used in power systems. The aim of this paper is regarded as a main task to investigate the effect of temperature gradient on the dielectric properties of insulating fluids. The consequences for power equipments are discussed. For these investigations, mineral oil and a synthetic ester liquid were considered

Keywords

ageing; insulating oils; permittivity; power apparatus; thermal stresses; ageing; chemical stress; dielectric properties; electro mechanic stress; four dimensional problem; insulating fluid contamination; mineral oil; permittivity; power equipment; synthetic ester liquid; temperature gradient; thermal stress; Aging; Chemicals; Dielectric liquids; Dielectrics and electrical insulation; Gas insulation; Minerals; Petroleum; Power systems; Temperature dependence; Thermal stresses;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2006. Conference Record of the 2006 IEEE International Symposium on

Conference_Location

Toronto, Ont.

ISSN

1089-084X

Print_ISBN

1-4244-0333-2

Type

conf

DOI

10.1109/ELINSL.2006.1665371

Filename

1665371