Estimation of design parameters of single-phase distribution transformers from terminal measurements

Reza Kazemi, Saeed Jazebi, Digvijay Deswal, Francisco De León

Research output: Contribution to journalArticle

Abstract

In this paper, a novel method is proposed for the estimation of the design parameters of single-phase distribution transformers using data acquired from terminal measurements along with nameplate data and external tank dimensions. Transformer parameters that can be measured from terminals, for example, leakage inductance, saturation inductance, andwinding resistance, are considered first. These parameters are analytically correlated with the geometrical information of the transformer structure. A system of nonlinear equations is derived accordingly. Winding dimensions and the number of turns are computed with acceptable engineering accuracy. The core dimensions (including its crosssectional area) are calculated using winding information. The obtained data can be utilized to develop white- or gray-box models to be used in the investigation of the thermal and/or electromagnetic behavior of power transformers as presented in several research studies published to date.Examples on laboratory and utility-grade transformers are shown for illustration and validation of the proposed design parameter estimation method.

Original languageEnglish (US)
Article number7707337
Pages (from-to)2031-2039
Number of pages9
JournalIEEE Transactions on Power Delivery
Volume32
Issue number4
DOIs
StatePublished - Aug 2017

Keywords

  • Leakage inductance
  • Parameter estimation
  • Saturation inductance
  • Transformer design

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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