Most of the work on lightning-induced voltages makes reference to single or multi-conductor lines above a perfectly conducting ground. Distribution systems are, however, of different and more complex topology, as they generally consist of one or more main feeder and several laterals, and are situated above a lossy ground. The paper is aimed at showing whether the above simplifications are appropriate for the problem of interest. To accomplish that, first the explanation of the mechanism of lightning-induced voltages for the case of a lossless and of a lossy ground is summarized; then a sensitivity analysis on a H-shaped network is presented, aimed at showing the influence of the presence of the network branches on the calculated lightning-induced voltages.
C.A. Nucci (2005). Lightning - Induced voltages on distribution systems: influence of ground resistivity and system topology. SAO PAULO : IEE of the University of Sao Paulo.
Lightning - Induced voltages on distribution systems: influence of ground resistivity and system topology
NUCCI, CARLO ALBERTO
2005
Abstract
Most of the work on lightning-induced voltages makes reference to single or multi-conductor lines above a perfectly conducting ground. Distribution systems are, however, of different and more complex topology, as they generally consist of one or more main feeder and several laterals, and are situated above a lossy ground. The paper is aimed at showing whether the above simplifications are appropriate for the problem of interest. To accomplish that, first the explanation of the mechanism of lightning-induced voltages for the case of a lossless and of a lossy ground is summarized; then a sensitivity analysis on a H-shaped network is presented, aimed at showing the influence of the presence of the network branches on the calculated lightning-induced voltages.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
