Title :
Lightning Surge Response Of Transmission Towers
Author :
Chisholm, W.A. ; Chow, Y.L. ; Srivastava, K.D.
Author_Institution :
Ontario Hydro
Abstract :
A sensitivity study of HV and EHV lightning performance shows that surge response characteristics of towers and lines are as important as the footing response. Tower travel time has a very large sensitivity for taller double-circuit lines. Existing methods for analysis of tower and line response have considerable uncertainty. This uncertainty is resolved by extensions to travelling- wave analysis combined with experimental verification. New equations for tower surge impedance and tower travel time are proposed to deal with the most common situation of a midspan stroke to the skywire.
Keywords :
Accuracy; Corona; Dielectrics and electrical insulation; Impedance; Lightning; Optical coupling; Poles and towers; Power & Energy Society; Predictive models; Surges;
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
DOI :
10.1109/TPAS.1983.318134