KIEE International Transactions on Electrophysics and Applications

The Korean Institute of Electrical Engineers (대한전기학회)
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Characteristics of Lightning Overvoltages Coming in Low-Voltage Power Distribution Systems

  • Lee, Bok-Hee (School of Electrical and Computer Engineering, Inha University) ;
  • Lee, Dong-Moon (School of Electrical and Computer Engineering, Inha University) ;
  • Lee, Su-Bong (School of Electrical and Computer Engineering, Inha University) ;
  • Jeong, Dong-Cheol (School of Electrical and Computer Engineering, Inha University) ;
  • Lee, Jae-Bok (Korea Electrotechnology Research Institute) ;
  • Myung, Sung-Ho (Korea Electrotechnology Research Institute)
  • Published : 2003.06.01
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Abstract

The importance of improving the quality of electric power is being strongly raised, owing to an increasing use of sensitive and small-sized electronic devices and systems. The transient over-voltages on low-voltage power distribution systems are induced by direct or indirect lightning return strokes. These can cause damage and/or malfunction of the utility systems for home automation, office automation, factory automation, medical automation, etc. The behaviors of lightning overvoltages transferred through the transformer to the low-voltage distribution systems using a Marx generator were experimentally investigated. Furthermore, the coupling mechanisms of lightning overvoltages transferred to the low-voltage systems were clearly illustrated through a theoretical simulation using a Pspice program. The overvoltages in low-voltage ac power systems are rarely limited by the application of the surge arrester to the primary side of the distribution transformer. A superior surge protection scheme is to install surge protection devices at the service entrance switchboard and/or at the load devices in TN power systems.

Keywords

References

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