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- W3127260249 abstract "This study is aimed at investigating the significant influences of using clack-bands in a disc-type winding in an attempt to determine the effects on the lifetime of power transformers. The excessive heat generated inside the winding must be dissipated without allowing the core, winding, and structural parts to reach a temperature that will cause deterioration of insulation. If the insulation is subjected to temperatures higher than the maximum allowable value for a long time, it loses insulating properties, i.e., the insulation gets aged, severely affecting the transformer life. A clack-band can be defined as the gap between two turns in a disc, where the solid insulation has been moved to allow oil flow through the gap. In this manuscript, non-uniform heat loss distribution in the winding has been considered to investigate the influence of flux leakages within the winding on the average temperature and the location of the hot-spot (HSL). This study includes the accurate numerical 3D CFD (Computational Fluid Dynamics) simulations of the force cooled type at the flow rate of 9 kg/s and inlet temperature of $80^{circ}C$. The presented results provided an insight into the thermal aspects of the disc-type windings enabling to identify the influence of using the clack-band at different operating conditions; specially to consider the non-uniform heat loss distribution." @default.
- W3127260249 created "2021-02-15" @default.
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- W3127260249 date "2020-07-05" @default.
- W3127260249 modified "2023-09-27" @default.
- W3127260249 title "Numerical Investigation on the Influence of Clackbands on Lifetime of Disc-type Windings" @default.
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- W3127260249 doi "https://doi.org/10.1109/icd46958.2020.9342026" @default.
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