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In order to improve our understanding of failure mechanisms and their relative risk, dissection was performed on stator bars (coils) extracted from a generator after a failure. In combination with other non-destructive diagnostic tools such as partial discharge and dielectric response measurements, the information obtained from dissection reveals many symptoms which can be used to identify the root...
In the past decades, significant improvements in generator diagnostics were made possible by using continuous online measurements and a number of periodic tests. In recent years, the data provided has been converted into more useful information thanks to integrated diagnostic systems. For example, an integrated methodology for generator diagnostics (MIDA) was developed at Hydro-Québec's research institute...
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