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SPD 접지방식에 따른 통신기기의 과도위험전압

Transient Overvoltages of Communication Equipment Depending on the Grounding Method of SPD

  • 발행 : 2008.04.30

초록

뇌서지 전압이 전파되는 양상은 대상 전원계통과 기기별로 차이를 보인다. 하지만 뇌서지가 유입되는 대상기기를 중심으로 보면 뇌서지 침입경로는 전원선의 두 선간, 전원선과 대지간, 전원선과 PE도체, 중성선과 대지 간 등으로 구분되어진다. 또한 통신기기에서 전원측에서 들어오는 뇌서지 외에 통신선의 선간, 통신선과 대지 간으로 입사하는 경로가 존재한다. 이 논문은 각각의 경로를 통하여 대상기기에 침입하는 뇌서지에 대해 SPD를 사용한 전원계통의 안전향상 기법 중 독립접지, 공통접지, 바이패스 어레스터를 이용한 접지의 뇌서지 양상을 실증실험을 통하여 분석한 결과를 기술하고 있다.

The tendency of lightning surge to propagate is a eared variously depend on the power system and subject equipment of protection. However, looking into the subject equipment with the lightning surge, the invasion route of lightning surge can be divided in between the two lines of power, between the power line and the ground, the power line and the PE conductor, between the neutral line and the ground and the like. In addition, in the event of the communication equipment, there exists the route of lightning surge incoming from between the communication lines, the communication line and the ground in addition to the power lines. In this study, the tendency of propagation of lightning surge penetrated on to the subject equipment is analyzed through the empirical experiment in accordance with the ground method by using the independent ground, common ground and bypass arrester ground for safety improvement in power lines.

키워드

참고문헌

  1. Bok-Hee Lee, Seung-Chil Lee, "Protection of Information and Communication Facilities against Lightning", Inha University Press, 2004
  2. IEC61643-1, Surge protective devices connected to low-voltage power distribution systems - Performance requirements and testing methods, 2002
  3. ITU-T K.66, Protection of customer premises from overvoltages
  4. Keith W. Eilers, Mark Wingate and Eric Pham, "Application and Safety lssue for Transient Voltage Surge Suppressors", IEEE Trans. on IA, Vol. 36, No. 6, pp.1734-1740, 2000