Title :
Flow electrification phenomena in paraffinic based transformer oil
Author :
Poovamma, P.K. ; Moorching, S.N.
Author_Institution :
Central Power Res. Inst., Bangalore, India
Abstract :
The paper details, the effect of AC and DC energisation on the flow charging characteristics of paraffinic based transformer oil. The Couette device which simulates some of the practical configurations of a transformer, mainly the duct flow condition in the transformer was employed. Flow charging phenomena was quantified by evaluating variations in the charging current, voltage buildup and accumulated charge, under varying flow velocities and energisation. The results of the investigation revealed that the above parameters increased with flow velocity and energisation. However, it was observed that with DC energisation, the polarity of the parameters evaluated depended on the polarity of the applied voltage
Keywords :
Couette flow; electrohydrodynamics; flow simulation; organic compounds; pipe flow; transformer oil; AC energisation; Couette device; DC energisation; accumulated charge; applied voltage polarity; charging current; duct flow condition; flow charging characteristics; flow charging phenomena; flow electrification; flow velocities; flow velocity; paraffinic based transformer oil; simulation; voltage buildup; Conductivity; Costs; Dielectrics and electrical insulation; Ducts; Fluid flow measurement; Manufacturing; Oil insulation; Petroleum; Power transformer insulation; Power transformers;
Conference_Titel :
Dielectric Liquids, 1999. (ICDL '99) Proceedings of the 1999 IEEE 13th International Conference on
Conference_Location :
Nara
Print_ISBN :
0-7803-4759-5
DOI :
10.1109/ICDL.1999.798914
