News: ElectroScope Magazine
Abstract
There are used many different statistical methods for evaluation of lifetime endurance of stator winding insulation. It is possible to interlace the measured lifetime data by a lifetime curve – it can be a line or generally a power function. We are interested in grade of the line and shift of the line. From the interlaced line we try to predict lifetime of the insulation system for required electrical stress and for required insulation thickness. We come into issues about probability distribution with using Gauss, Weibull and Student distribution in system of interoperate tests. We check the normality (log normality) comparing distribution function on the probability paper or alternatively validity of using Gauss or Weibull distribution by Anderson-Darling test. Parameters estimation of Gauss and Weibull cut distribution with method of likelihood by voltage test.
Scientific Committee of ElectroScope Magazine
Volume 2009, Number 1_2009
Article: Statistical methods for appraisal of quality of stator winding insulation of big rotating machines
J. Bezdekovsky, P. Krupauer
Department of Stator Winding and Insulation Design
Edvarda Benese 39, 30100 Plzen, The Czech Republic
Scientific committee of ElectroScope Magazine is responsible for technical review of submitted paper. The committee members decide on publishing or rejection of the submitted manuscript.
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