Dielectric Frequency Response of Generator Stator Windings
Can a diagnostic test method provide new information and more accurate information about generator stator winding insulation without applying high voltage or complicated setups?
Need and Benefit
Stator windings are one of the most expensive components in a powerhouse and any improvement in the analysis of its condition will increase Reclamation's ability to manage major assets. Stator winding diagnostics is a difficult process that can be subjective and only performed by a few engineers within Reclamation. If a new test method can be developed to standardize and quantify the condition of the insulation system, then a great benefit would be provided to all of Reclamation. With the current test methods the whole diagnostic process lies in the hands of a few engineers and in some cases tests are performed without data analysis being performed. More problems will be identified in a timely manner and have the ability to be analyzed by field engineers if new test methods can be developed. Currently there isn't enough experienced personnel to review, analyze, and provide the condition of Reclamation's large fleet of hydrogenerators.
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