Title :
Nonlinear Interpretation Technique for Lightning Impulse Test
Author :
Velandy, Jeyabalan
Author_Institution :
Global R&D centre, Crompton Greaves Ltd., Mumbai, India
Abstract :
The nonlinear interpretation technique is proposed to detect the fault in transformer windings during the impulse test. To prove feasibility of the proposed technique, 90-MVA 220/110-kV, 250-MVA 500/275/33-kV transformers, and a 22-kV interleaved winding are used.
Keywords :
impulse testing; lightning; transformer windings; lightning impulse test; nonlinear interpretation technique; transformer windings; voltage 110 kV; voltage 22 kV; voltage 220 kV; voltage 275 kV; voltage 33 kV; voltage 500 kV; Correlation coefficient; Current measurement; IEC standards; Partial discharges; Power transformer insulation; Windings; Insulation failures; interpretation techniques; lightning impulse test; transformer; transformer windings;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2015.2412681
