The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Characteristics of the Current Density Induced Inside a Worker Near a Neutral Ground Reactor

중성점 접지 리액터 주변 작업자의 인체내부 유도전류밀도 특성

  • 민석원 (순천향대 공대 전기통신공학과) ;
  • 이승호 (순천향대 대학원 전기통신공학과)
  • Received : 2010.07.29
  • Accepted : 2010.08.30
  • Published : 2010.10.01
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Abstract

To reduce a high fault current, neutral ground reactors (NGR) were installed in the Korean substation. Current with several harmonic components flows in a NGR due to load unbalance in normal steady state and magnetic fields with several harmonic components are also generated around a NGR. As results of study, we found magnetic fields around a NGR in Korean substation included two harmonics, 180Hz and 540Hz. Magnetic fields of 180 Hz increased 3 times more current density inside a worker near a NGR than same magnitude magnetic fields of 60 Hz. We know a worker near a NGR may not meet ICNIRP guideline of 10(mA/$m^2$) due to several harmonic components.

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References

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