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Aging diagnosis of insulation systems by PD measurements. Extraction of partial discharge features in electrical treeing

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6 Author(s)

The charge height values associated with PD measured during electrical tree inception and growth are processed according to the Weibull distribution. Test arrangements, based on the needle-plane electrode system, consider specimens having either a cavity at the tip or an intimate contact with insulation. It is shown that the Weibull-function parameters have close relation to discharges occurring in cavity and tree channels, and that an indication of inception of electrical trees can be obtained

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Dielectrics and Electrical Insulation, IEEE Transactions on  (Volume:5 ,  Issue: 1 )