Affiliation:
1. Faculty of Electrical Engineering, Belgrade
Abstract
A methodology for calculation of overvoltages in transformer windings, based
on a numerical method of inverse Laplace transform, is presented.
Mathematical model of transformer windings is described by partial
differential equations corresponding to distributed parameters electrical
circuits. The procedure of calculating overvoltages is applied to windings
having either isolated neutral point, or grounded neutral point, or neutral
point grounded through impedance. A comparative analysis of the calculation
results obtained by the proposed numerical method and by analytical method of
calculation of overvoltages in transformer windings is presented. The results
computed by the proposed method and measured voltage distributions, when a
voltage surge is applied to a three-phase 30 kVA power transformer, are
compared.
Funder
Ministry of Education, Science and Technological Development of the Republic of Serbia
Publisher
National Library of Serbia
Subject
Electrical and Electronic Engineering,Computer Networks and Communications,Hardware and Architecture,Mechanical Engineering,Energy Engineering and Power Technology,Control and Systems Engineering
Cited by
4 articles.
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