A New Form to Calculate Natural Oscilation Frequency in Multiple Energy Bars

A simplified technique to compute the natural oscillating frequency presented in VDE 0103 for two conductors by phase, is presented in this article. It allows a straightforward application of that standard procedure. By mean of simulation results from computer, resorting to finite elements method and an adequate interest variables processing, an approximate formulae is obtained for the natural oscillating frequency estimation for a set of vertical and horizontal bars. In this way, the effort in bars as well as in insulators may be quantified. Finally some case studies with satisfactory results are presented.