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

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

doi:10.1109/61.180343

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 journal › Article › peer-review

73 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	246-254
Number of pages	9
Journal	IEEE Transactions on Power Delivery
Volume	8
Issue number	1
DOIs	https://doi.org/10.1109/61.180343
Publication status	Published - 1993 Jan

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1109/61.180343

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title = "Investigation of magnetizing inrush current in transformers part i - numerical simulation",

abstract = "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.",

author = "Lin, {C. E.} and Cheng, {C. L.} and Huang, {C. L.} and Yeh, {J. C.}",

note = "Funding Information: This work is supported by the National Science Council under research projects: NSC77-0404-E006-05, and NSC78-0404-E006-04.",

year = "1993",

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T1 - Investigation of magnetizing inrush current in transformers part i - numerical simulation

AU - Lin, C. E.

AU - Cheng, C. L.

AU - Huang, C. L.

AU - Yeh, J. C.

N1 - Funding Information: This work is supported by the National Science Council under research projects: NSC77-0404-E006-05, and NSC78-0404-E006-04.

PY - 1993/1

Y1 - 1993/1

N2 - 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.

AB - 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.

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

Abstract

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