Virtual instrument for lightning impulse tests
A Palani, V Jayashankar - IEEE transactions on power delivery, 2007 - ieeexplore.ieee.org
We propose an objective formulation of the impulse analysis problem from a signal analysis
viewpoint. The winding response is quintessentially that of a deterministic network to a finite …
viewpoint. The winding response is quintessentially that of a deterministic network to a finite …
Online assessment of winding deformation based on optimised excitation
S Gopalakrishna, V Jayashankar - 2010 IEEE International …, 2010 - ieeexplore.ieee.org
On line assessment of winding deformation in a power transformer can be performed via a
bushing tap excitation with optimized high frequency excitation. A benchmark layer winding …
bushing tap excitation with optimized high frequency excitation. A benchmark layer winding …
The influence of winding type on the recognition of partial discharges [power transformer testing]
S Jayalalitha, A Palani… - The 17th Annual Meeting …, 2004 - ieeexplore.ieee.org
An instrumentation scheme is proposed for the acquisition of waveforms during the lightning
impulse test on transformers. Three filters segregate the response into distinct frequency …
impulse test on transformers. Three filters segregate the response into distinct frequency …
A lock-in technique for PD measurement during impulse tests
A Palani, V Jayashankar… - IEEE Transactions on …, 2007 - ieeexplore.ieee.org
A method is proposed for recognizing PD events within a winding during impulse tests using
a lock-in amplifier technique. The resonant frequencies of the winding serve as the basis of …
a lock-in amplifier technique. The resonant frequencies of the winding serve as the basis of …
Fuzzy logic based impulse test analysis
S Jayalalitha, V Jayashankar - Proceedings of the 2005 IEEE …, 2005 - ieeexplore.ieee.org
A fusion of hard and soft computing is proposed for the impulse analysis problem. An
optimal hardware platform for the data acquisition and a minimal set of simulations form the …
optimal hardware platform for the data acquisition and a minimal set of simulations form the …
Programmable continuous time filters for impulse testing of transformers
S Jayalalitha, A Palani… - Proceedings of the IEEE …, 2004 - ieeexplore.ieee.org
An objective formulation of the impulse testing procedure is proposed based on models for
winding response as well as fault models. Experimental validation of the fault models for …
winding response as well as fault models. Experimental validation of the fault models for …
Fuzzy logic based fault classification of impulse test records
S Jayalalitha, V Jayashankar - IEEJ Transactions on Power and …, 2006 - jstage.jst.go.jp
A fuzzy logic approach is proposed for identification and classification of faults based on
records obtained during impulse tests on transformers. The outputs of three filters form the …
records obtained during impulse tests on transformers. The outputs of three filters form the …
[PDF][PDF] Transformer Winding Faults-A Novel Approach Of Recognition
V Thiyagarajan, V Sekar - … Journal of Advances in Engineering & …, 2013 - Citeseer
The purpose of lighting impulse test is to ascertain whether the transformer insulation can
withstand the nonlinear electric stresses without damage and test the dielectric integrity …
withstand the nonlinear electric stresses without damage and test the dielectric integrity …