Investigations of field-excited multiconductor lines with nonlinear loads

Bergeron´s method, a time-domain method for the solution of traveling wave problems, is used to deal with field-excited single and multiconductor lines. Simple linear relations between current and voltage at the line ends result; conductor branching and complicated line terminations can be treated by this procedure. Some results that have been obtained by this method are presented. For the calculation no discretization of the lines is needed, and, for definite time dependence of the exciting wave, e.g. exponential or sine-wave, its influence can be specified analytically. For these reasons, extremely short calculation times result, which depend only on the number but not on the lengths of the lines considered. It is concluded that Bergeron´s method is a powerful tool for treating problems with nonlinear elements such as spark gaps or varistors