Title :
Degradation of electrical insulating paper monitored with high performance liquid chromatography
Author :
Unsworth, J. ; Mitchell, F.
Author_Institution :
Univ. of Technol., Sydney, NSW, Australia
fDate :
8/1/1990 12:00:00 AM
Abstract :
The degradation of electrical kraft paper under carefully controlled laboratory experiments is being examined in order to find correlations between the change in dielectric and mechanical properties and the increase in concentration of furan compounds in the oil. These correlations could be valuable for assessing the extent of degradation of paper insulation in operating HV equipment. Preliminary investigation has shown that the concentration of furan compounds in mineral oil can be determined relatively easily using high-performance liquid chromatography (HPLC). While some of these compounds are themselves unstable, three have been found which are worth monitoring to correlate with the tensile and dielectric properties of the paper. Useful trends have been obtained, and further investigation is taking place to obtain clear cut correlation of practical value for monitoring the condition of actual transformers
Keywords :
chromatography; insulation testing; organic insulating materials; transformer insulation; dielectric properties; electrical insulating paper; electrical kraft paper; furan compounds; high performance liquid chromatography; oil; operating HV equipment; tensile properties; transformers; Bonding; Dielectric liquids; Dielectrics and electrical insulation; Minerals; Moisture; Monitoring; Petroleum; Polymers; Sugar; Thermal degradation;
Journal_Title :
Electrical Insulation, IEEE Transactions on