Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

A Rise in Electric Potential of Telecommunication Line for Electric Power System by Lightning Surges

뇌서지에 의한 전력통신선로의 전위상승

  • Lee, Bok-Hee (Dept. of Electrical Engineering, Inha University) ;
  • Chang, Sug-Hun (Dept. of Electrical Engineering, Inha University)
  • 이복희 (인하대학교 공대 전기공학과) ;
  • 장석훈 (인하대학교 공대 전기공학과)
  • Published : 1997.07.21
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Abstract

This paper deals with n rise in electric potential of telecommunication line for electric power system by lightning surges. When $1.2/50{\mu}s$ and $8/20{\mu}s$ impulse voltage and current were applied on telecommunication cable, the voltage waveforms at the end terminal and equipment were measured. The telecommunication lines, which consist of 60 conductors and 3.5km in length, have some surge protectors such as preposition lightning arrester and TVSS. In each case, the rise in electric potential was measured for differential mode and common mode, respectively. Also, the rise in ground potential and the induced voltages were measured and analyzed. As a result, a significant rise in ground potential was observed for lightning surge. It can cause failure or malfunction of telecommunication systems.

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