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|Title:||Assessment of transformer insulation system by evaluating partial discharge and dissolved gas analysis|
Scanning electron microscopy
|Abstract:||Partial Discharge (PD) measurement is carried out on the accelerated aged oil-paper samples in specially designed test cell. The accelerated thermal stress is selected from the temperature range 120 to 160°°C and electric stress 1.0 to 2.5 per unit (pu, 1 pu = 1.0 kV). The test cell is taken out after 15, 30, 45 and 60 d to assess the extent of degradation of transformer insulation by performing PD test. The PD results are correlated with dissolved gas analysis and microstructure analysis of aged paper samples.|
|ISSN:||0975-1084 (Online); 0022-4456 (Print)|
|Appears in Collections:||JSIR Vol.64(04) [April 2005]|
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