A Circuit Human Body Model for an Indirect Lightning Strike Analysed by means of an FDTD Method

Abstract

In the present paper, a simplified lumped element human body, stroked by a lightning touch volage, is designed and analyzed using the finitedifference time-domain (FDTD) method. The extracted results are compared with an electronic circuit simultor validating our numerical method. Moreover, other touch voltage scenarios are investigated, measuring and comparing the current that flows through different body parts. Additionally, the induced current to a human body, being in the vicinity of a lightning stroked object, is accurately calculated through the FDTD algorithm. The inability of the circuit modeler to simulate non-contact configurations proves the necessity of our numerical algorithm, while the possibility of the electric discharge effect is introduced.

Touch and Step Voltage Evaluation based on Computer Simulation for a Mass Rapid Transit System in Thailand

“…have been widely studied and discovered. In [8], an equivalent circuit of a human body was proposed to calculate the touch voltage in the scenario of a lightning strike on a telephone line. The body currents were obtained in two simulation cases: a human holding a telephone and a human standing close to a telephone.…”