Numerical assessment of electromagnetic exposure during live-line works on high-voltage objects

Live-line workers are exposed to the electric and magnetic fields of considerable strength. These fields should be estimated and analysed for the protection of health and safety of workers. According to the European directive 2004/40/EC (regarding the exposure of workers to the electromagnetic fields), the density of currents induced in the worker´ s body should be also evaluated. The indirect version of the boundary element method (BEM) is applied to the analysis of the electric field distribution in the live-line-working zone. This method is also employed for the modelling of eddy currents induced in the worker´ s body by the external magnetic field. Numerical models of power objects and a simplified model of the human body are implemented in the own author´ s computer programs. The above model of the human body is recommended by IEC/EN standards regarding the human exposure to the electromagnetic fields. Some numerical results concerning the hot-stick working method as well as the bare-hand working technique are presented.