| Title |
ATPDraw Simulation for Transient Phenomena Analysis of Electrical Shock Underwater |
| Authors |
Jong-Wook Jeong ; Jin-Soo Jung |
| Keywords |
Transient phenomena ; Human body ; Electrical shock ; ATPDraw |
| Abstract |
This paper describes the analysis of transient phenomena on the point that a human body suffers an electrical shock A couple of case studies were discussed by using an ATPDraw simulation tool. Two models for the case studies were constructed on the assumption that the electrical shock event takes place under water to simulate the severest condition ; the first model that the human body contacts with an energized part exposed to water ; the second model that both hands and feet simultaneously contact with the ground under water. After modeling, the transient phenomena for the models were analyzed by comparing the voltages and currents calculated at each part of the human body. As a result, steep front kicks in voltage and current were observed as transient phenomena on the point that the human body contacts with the energized part exposed to water in the first model and the magnitudes of the kicks considerably increased. It was considered, however, the effect of the kicks due to the commercial power source on the human body could be neglected because the product of the current through the body and the short duration is less than the safety limit. When both hands and feet simultaneously contact with the ground in the second model, the voltage generally decreased all over the body parts, while the current flowing through the chest abruptly increased. The duration of this current was very shot, as well, thus its effect on the electrical shock is considered insignificant, After all, it was confirmed through the simulation results that the electrical shock depends on the magnitude in voltage and the body impedance. |