Several phenomena in transformers are best analyzed In the frequency domain when energized by broadband excitation. These include dielectric behavior to lightning impulse, winding deformation during transport and structural failure during short circuit tests. We propose an adaptive architecture that characterizes all these events in an unifying manner. The developed instrument is based on the PXI hardware with necessary software developed under LABVIEW environment. Experimental results using the developed instrument are reported to demonstrate its versatility.

A. Palani

V. Jayashankar

Broadband networks

Computer architecture

Dielectric devices

Frequency domain analysis

Software engineering

ADAPTIVE ARCHITECTURE

Broadband excitation

LIGHTNING IMPULSE

VIRTUAL INSTRUMENTS

Adaptive Filtering

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

An Adaptive High Resolution Measuring System for Charcaterizing Transformers Subjected to Broadband Excitation

IEEE Region 10 Annual International Conference, Proceedings/TENCON

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. © 2007 IEEE.

IEEE Transactions on Power Delivery

Virtual instrument for lightning impulse tests

An adaptive high resolution measuring system for characterizing transformers subjected to broadband excitation

Journal	Data powered by TypesetIEEE Region 10 Annual International Conference, Proceedings/TENCON
Publisher	Data powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
ISSN	21593442
Open Access	No