A. R.Hileman

A.Greenwood

B.Heller

I.Boldea

J. A.Brandao Faria

L. V.Bewley

M.Heathcote

P. A.Abetti

P.Chowdhuri

R. E.Adjaye

R.Rudenberg

S. V.Kulkarni

T. J.Lewis

V.Lovass-Nagy

Power apparatus windings are subjected to voltage surges arising from transient events in power systems. High frequency surges that reach windings can cause high voltage stresses, which are usually concentrated in the sections near to the line end, or produce part-winding resonance, which can create high oscillatory voltages. Determining the transient voltage response of power apparatus windings to high frequency surges is generally achieved by means of a model of the winding structure and some computer solution method. The accurate prediction of winding and coil response to steep-fronted voltage surges is a complex problem for several reasons: the form of excitation may greatly vary with the source of the transient, and the representation of the winding depends on the input frequency and its geometry. This chapter introduces the most basic models used to date for analyzing the response of power apparatus windings to steep-fronted voltage surges. These models can be broadly classified into two groups: (i) models for determining the internal voltage distribution and (ii) models for representing a power apparatus seen from its terminals.</jats:p

Juan A. Martinez-Velasco

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Basic Methods for Analysis of High Frequency Transients in Power Apparatus Windings

Basic Methods for Analysis of High Frequency Transients in Power Apparatus Windings

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