수중에 잠긴 접지전극주변에서 이온화에 의한 전위저감 및 에너지 방출의 평가

초록

When high surge voltage invaded into the ground rod contacted with ground water, the ionization phenomena are happened in the water. Although some researchers have surveyed the ionization phenomena in soil, they have just analyzed the variation of the ground resistance. The most important role of the ground rod is to protect human beings from potential rise and to dissipate energy to the earth safely. In this work, we presented the method evaluating the potential reduction and energy dispersion. Also we analyzed theses factors as a function of charging voltages at the water resistivity of 50 Ω·m using the Matlab Program. As a result, the ground rod potential was reduced to 38 kV by ionization just below breakdown voltage. The energy more than half of the total injected energy was dispersed through the grounding electrode caused due to ionization.