Insulation Problems in Medium Voltage Stator Coils Under Fast Repetitive Voltage Pulses

作者: Saeed Ul Haq , Shesha H. Jayaram , Edward A. Cherney

DOI: 10.1109/TIA.2008.926305

关键词:

摘要: In this research work, the degradation processes in stator bar groundwall insulation that is subjected to steep-front voltage pulses, at different temperatures, studied. The test conditions include pulse amplitudes up 6 kVp, and switching frequencies 3 kHz ambient temperatures of 23degC, 120 degC, 155 degC. During aging process, surface temperature monitored with an infrared camera determine regions highest partial discharge (PD) activity. visual examination failed bars confirmed these degraded.

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