Title :
Flow electrification phenomena employing co-axial cylinders
Author :
Poovamma, P.K. ; Moorching, S.N.
Author_Institution :
Central Power Res. Inst., Bangalore, India
Abstract :
To date, dozens of failures of large forced oil cooled power transformers have been attributed to flow induced electrification phenomena. The aim of the study is to evaluate the influence of various operational factors on the flow charging characteristics of the oil, by simulating some of the practical configurations. The investigation has revealed that the flow charging of the oil increases with flow rate, ageing and energisation. It also depends on the nature of the oil and the composition, type and surface conditions of the pressboard insulation employed
Keywords :
power transformer insulation; static electrification; transformer oil; ageing; coaxial cylinder; energisation; failure; flow charging; flow electrification; forced oil cooled power transformer; pressboard insulation; Dielectric liquids; Dielectric materials; Dielectrics and electrical insulation; Ducts; Oil insulation; Petroleum; Power transformer insulation; Power transformers; Solids; Surface charging;
Conference_Titel :
Electrical Insulation, 1998. Conference Record of the 1998 IEEE International Symposium on
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-4927-X
DOI :
10.1109/ELINSL.1998.694881
