3-D MODEL OF THE ELECTRIC-FIELD EXCITED BY OVERHEAD HV LINES

A 3-D mathematical model of the electric field excited by overhead HV lines is proposed. The disturbing influence of physical objects (locat ed in the line proximity) on the electric field distribution is taken into account in the model. The hybrid numerical technique based on bot h the boundary element method and the charge simulation method is prop osed to solve the problem in question. The appropriate mathematical fo rmulae are presented. Several practical problems that require to be tr eated as three-dimensional ones are considered, and selected numerical results are shown.