Short-Circuit Withstand Capability of Power Transformers - Couverture souple

Geißler, Daniel Hermann

 
9783736993327: Short-Circuit Withstand Capability of Power Transformers
Couverture souple
ISBN 10 : 3736993323 ISBN 13 : 9783736993327
Editeur : Cuvillier, 2016

Synopsis

The work presented in this PhD-thesis concentrates on radial buckling phenomena of power transformer windings made from Continuously Transposed Conductors (CTC). Analytical and simulation-based approaches describe the critical buckling load involving elastoplastic material behavior. A test stand allows verifying the theoretical results based on dynamic short-circuit tests with realistic winding arrangements in air. Acceleration sensors and a high-speed camera are used to measure the winding vibration and deformation. Furthermore, bonded CTCs are characterized by bending tests and a simulation model including the shear strength of the bonding is developed. Another focus is on the impact of the paper insulation wrapped around CTCs and its contribution to the overall mechanical stiffness. On this subject a considerable impact has been discovered. Accelerated aging tests address the mechanical effect of paper aging based on bending tests as well as zero- and wide-span tensile tests and the degree of polymerization (DP).

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Éditeur
Cuvillier
Date d'édition
2016
Langue
anglais
ISBN 10 
3736993323
ISBN 13 
9783736993327
Reliure
Broché
Nombre de pages
174
Coordonnées du fabricant
non disponible
Personne responsable
non disponible