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Virtual Instrument for Lightning Impulse Tests

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2 Author(s)
Palani, A. ; IIT Madras, Madras ; Jayashankar, V.

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 energy signal, with breakdown and partial discharge being inherently nonlinear events. A significant improvement to the acquisition of waveforms is demonstrated by a virtual instrument approach. It retains the advantages of the time- and frequency-domain methods. The drawbacks of the transfer function method are highlighted and a new piecewise linear approach is proposed for analysis. Experiments on a discrete lumped parameter model of the winding are used to validate the PXI based instrument.

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Power Delivery, IEEE Transactions on  (Volume:22 ,  Issue: 3 )