Investigation of magnetizing inrush current in transformers part i - numerical simulation

C. E. Lin, C. L. Cheng, C. L. Huang, J. C. Yeh

Research output: Contribution to journalArticlepeer-review

73 Citations (Scopus)


Measurements of transformer inrush currents offer important data for a power systems operation and protection. Since inrush currents result from systems transient, it is difficult to observe and analyze. This paper proposes a simple method to simulate the magnetizing inrush currents using real time measurements. The proposed method formulates a simplified model to represent the inrush current under different loading conditions. A digital simulation method is proposed using a PC-AT micro computer. Transformer operating conditions, including transformer loading power factors, switching-on angles, and remanent flux, are also included. The simulation results are compared with experiment results with very good agreements.

Original languageEnglish
Pages (from-to)246-254
Number of pages9
JournalIEEE Transactions on Power Delivery
Issue number1
Publication statusPublished - 1993 Jan

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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