A hybrid winding model of disc-type power transformers for frequency response analysis

A. Shintemirov, W. H. Tang, Q. H. Wu

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)


The paper presents a hybrid model of disc-type power transformer winding for frequency response analysis (FRA) based on traveling wave and multiconductor transmission line (MTL) theories. Each disc of a winding is described by traveling wave equations, which are connected to each other in a form of MTL matrix model. This significantly reduces the order of the model with respect to previously established MTL models of transformer winding. The model is applied to frequency response simulation of two single-phase transformers. The simulations are compared with the experimental data and calculated results using lumped parameter and MTL models reported in other publications. It is shown that the model can be used for FRA result interpretation in an extended range of frequencies up to several mega Hertz and resonance analysis under very fast transient overvoltages (VFTOs).

Original languageEnglish
Pages (from-to)730-739
Number of pages10
JournalIEEE Transactions on Power Delivery
Issue number2
Publication statusPublished - 2009


  • Frequency response analysis
  • Multiconductor transmission lines
  • Transfer functions
  • Transformer windings

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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