Title :
Thermal performance evaluation of an insulation system for cast resin power transformers
Author :
Centurioni, L. ; Coletti, G. ; Tommasini, D.
Author_Institution :
Dept. of Electr. Eng., Genoa Univ., Italy
Abstract :
The thermal performance evaluation study is based on a proper thermal characterization of the PET (polyethylene terephthalate) film to be used as part of the insulation system. The film is tested in conditions similar to the ones present in the intended application and a meaningful set of data is obtained, which makes it possible to draw the relevant thermal life curves and to complete the analysis of the insulation system´s long-term behavior. The results obtained evince a higher thermal performance of the PET film than the ones reported in literature, because of the precautions introduced in segregating the film from air during the thermal agings and in avoiding the application of excessive mechanical stresses during the dielectric tests
Keywords :
organic insulating materials; polymers; power transformers; transformer insulation; PET; air; cast resin power transformers; insulation system; mechanical stresses; polyethylene terephthalate; segregating; thermal agings; thermal life curves; thermal performance evaluation; Coils; Dielectric breakdown; Dielectric materials; Dielectrics and electrical insulation; Polymer films; Positron emission tomography; Power transformer insulation; Power transformers; Resins; Safety;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of
Conference_Location :
Beijing
DOI :
10.1109/ICPADM.1988.38462
