Calculation and harmonic analysis of transient inrush currents in three-phase transformers

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

doi:10.1016/0378-7796(94)90003-5

Calculation and harmonic analysis of transient inrush currents in three-phase transformers

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

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Measurements of transient inrush currents in three-phase transformers offer important data for power system operation and protection. Because three-phase transformers are more widely used in industrial applications than single-phase transformers, the inrush current of the three-phase transformer is worthy of investigation. This paper proposes a simple method, extended from that for single-phase transformers, to investigate three-phase transformer inrush currents. Harmonic analysis of the inrush currents is carried out. Various structures of three-phase transformers, including winding connections and loading conditions, are discussed. The simulation results are compared with experimental results. The proposed method is simple and effective for transformer banks and five-limb transformers. The harmonic analysis of inrush currents is useful for protective relay design.

Original language	English
Pages (from-to)	93-102
Number of pages	10
Journal	Electric Power Systems Research
Volume	30
Issue number	2
DOIs	https://doi.org/10.1016/0378-7796(94)90003-5
Publication status	Published - 1994 Jan 1

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0378-7796(94)90003-5

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title = "Calculation and harmonic analysis of transient inrush currents in three-phase transformers",

abstract = "Measurements of transient inrush currents in three-phase transformers offer important data for power system operation and protection. Because three-phase transformers are more widely used in industrial applications than single-phase transformers, the inrush current of the three-phase transformer is worthy of investigation. This paper proposes a simple method, extended from that for single-phase transformers, to investigate three-phase transformer inrush currents. Harmonic analysis of the inrush currents is carried out. Various structures of three-phase transformers, including winding connections and loading conditions, are discussed. The simulation results are compared with experimental results. The proposed method is simple and effective for transformer banks and five-limb transformers. The harmonic analysis of inrush currents is useful for protective relay design.",

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T1 - Calculation and harmonic analysis of transient inrush currents in three-phase transformers

AU - Yeh, J. C.

AU - Lin, C. E.

AU - Huang, C. L.

AU - Cheng, C. L.

PY - 1994/1/1

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N2 - Measurements of transient inrush currents in three-phase transformers offer important data for power system operation and protection. Because three-phase transformers are more widely used in industrial applications than single-phase transformers, the inrush current of the three-phase transformer is worthy of investigation. This paper proposes a simple method, extended from that for single-phase transformers, to investigate three-phase transformer inrush currents. Harmonic analysis of the inrush currents is carried out. Various structures of three-phase transformers, including winding connections and loading conditions, are discussed. The simulation results are compared with experimental results. The proposed method is simple and effective for transformer banks and five-limb transformers. The harmonic analysis of inrush currents is useful for protective relay design.

AB - Measurements of transient inrush currents in three-phase transformers offer important data for power system operation and protection. Because three-phase transformers are more widely used in industrial applications than single-phase transformers, the inrush current of the three-phase transformer is worthy of investigation. This paper proposes a simple method, extended from that for single-phase transformers, to investigate three-phase transformer inrush currents. Harmonic analysis of the inrush currents is carried out. Various structures of three-phase transformers, including winding connections and loading conditions, are discussed. The simulation results are compared with experimental results. The proposed method is simple and effective for transformer banks and five-limb transformers. The harmonic analysis of inrush currents is useful for protective relay design.

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