A method for the analysis and control of mica tape impregnation processes

Author

Velten, K. ; Zemitis, A. ; Pfreundt, F.-J. ; Hennig, E. ; Schattauer, D.

Author_Institution

Inst. of Ind. & Economath., Kaiserslautern, Germany

Volume

6

Issue

3

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

363

Lastpage

369

Abstract

The impregnation of mica tape insulations usually is monitored with dielectric capacitance measurements. In this work, a method is developed that translates measured capacitance and loss into an average drag coefficient that characterizes flow resistance, which is the critical parameter of the process. In a first step, the impregnation depth is determined based on an appropriate model of the dielectric measurement. The impregnation depth curve and its derivative are then used to compute the average drag coefficient, which is defined in the framework of a standard porous media flow model. The method has been developed and tested for cylindrical insulators. Appropriate extensions to rectangular insulators are indicated

Keywords

capacitance; impregnated insulation; machine insulation; mica; average drag coefficient; cylindrical insulators; dielectric capacitance measurements; flow resistance; impregnation depth; mica tape impregnation processes; mica tape insulation; rectangular insulators; standard porous media flow model; Capacitance measurement; Dielectric loss measurement; Dielectric measurements; Dielectrics and electrical insulation; Drag; Electrical resistance measurement; Fluid flow measurement; Insulator testing; Loss measurement; Monitoring;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.775624

Filename

775624