Title :
Ageing Behaviour of Mineral Oil and Ester Liquids: a Comparative Study
Author :
Fofana, I. ; Bouaïcha, A. ; Farzaneh, M. ; Sabau, J.
Author_Institution :
Univ. of Quebec at Chicoutimi, Chicoutimi, QC
Abstract :
There is a general agreement that in service conditions the quality of insulating fluids gradually deteriorates under the impact of electrical, thermal and chemical stress. Two ASTM methods are used to monitor the deterioration of liquid insulation step by step. A comparison is made between the performances of a commercial based mineral oil and ester fluids. The results obtained using a laboratory grade spectrophotometer and a ratio-turbidimeter, indicate that the absorbance increases by a significant and easily observable margin with ageing rate. Under the same aging condition, synthetic ester ages considerably slower than mineral oil; natural ester showing an intermediate behaviour.
Keywords :
spectrophotometers; transformer oil; turbidimetry; ageing behaviour; ester liquids; liquid insulation; mineral oil; ratio-turbidimeter; spectrophotometer; Aging; Dielectric liquids; Dielectrics and electrical insulation; Electrons; Laboratories; Minerals; Oil insulation; Petroleum; Power transformer insulation; Thermal stresses;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2008. CEIDP 2008. Annual Report Conference on
Conference_Location :
Quebec, QC
Print_ISBN :
978-1-4244-2548-8
Electronic_ISBN :
978-1-4244-2549-5
DOI :
10.1109/CEIDP.2008.4772843
