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

  • 제29권3호
  • /
  • Pages.81-87
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  • 2015
  • /
  • 1229-4691(pISSN)
  • /
  • 2287-5034(eISSN)
한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
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특별저전압 직류 전원회로에 유용한 서지방호장치의 설계와 특성

Design and Behavior of Validating Surge Protective Devices in Extra-low Voltage DC Power Lines

  • 투고 : 2014.12.19
  • 심사 : 2015.01.14
  • 발행 : 2015.03.31
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초록

In order to effectively protect electrical and electronic circuits which are extremely susceptible to lightning surges, multi-stage surge protection circuits are required. This paper presents the operational characteristics of the two-stage hybrid surge protection circuit in extra-low voltage DC power lines. The hybrid surge protective device consists of the gas discharge tube, transient voltage suppressor, and series inductor. The response characteristics of the proposed hybrid surge protective device to combination waves were investigated. As a result, the proposed two-stage surge protective device to combination wave provides the tight clamping level of less than 50V. The firing of the gas discharge tube to lightning surges depends on the de-coupling inductance and the rate-of-change of the current flowing through the transient voltage suppressor. The coordination between the upstream and downstream components of the hybrid surge protective device was satisfactorily achieved. The inductance of a de-coupler in surge protective circuits for low-voltage DC power lines, relative to a resistance, is sufficiently effective. The voltage drop and power loss due to the proposed surge protective device are ignored during normal operation of the systems.

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참고문헌

  1. Korea Electric Association ; Korea Electro-Technical Commission Guidance - Technical Guide for Selection and Application of Surge Protective Devices in Low-Voltage Power Systems, pp.10-27, 2011.
  2. B. H Lee and H. K Shin, "Energy coordination of cascaded voltage limiting type surge protective devices", J. KIIEE, Vol.27, No.2, pp.29-35, 2013.
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  11. IEEE C62.45, IEEE Recommended Practice on Surge Test for Equipment Connected to Low-Voltage (1000V and less) AC Power Circuits, pp.27-36, 2002.
  12. KS C IEC 61643-12; Low-voltage surge protective devices - Part 12: Surge protective devices connected to low-voltage power distribution systems-Part 12: Selection and Application principles, pp. 21-48, 2010.
  13. B. H. Lee and H. K. Shin, "Energy coordination of cascaded voltage limiting type surge protective devices", J. KIIEE, Vol.27, No.2, pp.29-35, 2013.