A modified lumped parameter model of distribution transformer winding

Qingqing Ding, Yao Yao, Bingqian Wang, Jingwei Fu, Wei Zhang, Chao Zeng, Xiaoping Li, Stanimir Valtchev

Research output: Contribution to journalArticle

Abstract

The modelling of the distribution transformer winding is the starting point and serves as important basis for the transformer characteristics analysis and the lightning pulse response prediction. A distributed parameters model can depict the winding characteristics accurately, but it requires complex calculations. Lumped parameter model requires less calculations, but its applicable frequency range is not wide. This paper studies the amplitude-frequency characteristics of the lightning wave, compares the transformer modelling methods and finally proposes a modified lumped parameter model, based on the above comparison. The proposed model minimizes the errors provoked by the lumped parameter approximation, and the hyperbolic functions of the distributed parameter model. By this modification it becomes possible to accurately describe the winding characteristics and rapidly obtain the node voltage response. The proposed model can provide theoretical and experimental support to lightning protection of the distribution transformer.
Original languageEnglish
Pages (from-to)158-165
JournalGlobal Energy Interconnection
Volume3
Issue number2
DOIs
Publication statusPublished - 1 Apr 2020

Keywords

  • Wide band frequency response
  • Distributed parameter model
  • Lumped parameter model
  • Distribution transformer
  • Lightning protection

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