Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Characteristics of the Switching Surge Voltages Induced at Metal Flexible Conduits Due to Ground Faults

지락고장에 의해 금속제 유연전선관에 유도된 개폐서지전압의 특성

  • Received : 2013.02.08
  • Accepted : 2013.03.26
  • Published : 2013.05.31
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Abstract

This paper presents the transient behavior of the switching surge voltages generated by interruption of DC ground fault currents flowing through metal flexible conduits. All fault circuits consist of line parameters such as resistance, inductance, capacitance and conductance. The use of nonmagnetic metal conduits should be taken into account in order to reduce the inductance of battery charger distribution circuits. The frequency-dependent circuit parameters of metal flexible conduits were measured. The switching surge voltages generated at the ground fault circuit consisted of steel-galvanized alloy and aluminium conduits were investigated. As a result, the impedances of metal flexible conduits are significantly increased over the range of the frequency above 10 kHz and the switching surge voltages generated along aluminium flexible conduit are lower than those along steel-galvanized alloy conduit when DC fault current is interrupted.

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References

  1. G. M. Masters, Renewable and Efficient Electric Power System, Wiley - Interscience, A John Wiley & Sons, Inc., Publication, pp. 33-37, 112-116, 206-209, 445-448, 2004.
  2. Korea Electric Association, Electrical installation guide according to IEC, KEA, pp.427-460, 2011.
  3. K. Okumura, Electric Installation for constructional Engineers, Ohmsha, pp.101-109, 2010.
  4. B. H. Lee and S. C. Lee, Protection of Information and Communication Facilities against Lightning, The Publishing Department of Inha University, pp.42-47, 2004.
  5. IEEE Std. 946-1992, "IEEE Recommended Practice for the Design for the Design of DC Auxiliary Power Systems for Generating Stations", 7.1, 1992.
  6. T. Koike, J. Hasegawa, K. Okubo, and S. Yamashiro, Electric Power Transmission and Distribution Engineering, Youkendou Ltd. pp.269-270, 1992.
  7. P. Chowdhuri, "Electromagnetic Transients in Power Systems", 2nd Edition, Research studies Press LTD. , pp. 234-264, 2004.
  8. Bok-Hee Lee, Power System Engineering, The Publishing Department of Inaha University, pp.78-80, 2008.
  9. Morrison and W. H. Lewis, Grounding and Shielding in Facilities, John Wiley & Sons, pp.16-21, 1990.