| Title |
Characteristics of the Current Density Induced Inside a Worker Near a Neutral Ground Reactor |
| Authors |
민석원(Min, Suk-Won) ; 이승호(Lee, Seung-Ho) |
| Keywords |
NGR ; Induction current density ; Harmonics ; Worker |
| 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. |