The lightning performance of an overhead line due to indirect strokes is a measure of its ability to resist to surges produced by nearby lightning. The estimation of the lightning performance generally requires a huge number of calculations requiring computationally intensive simulations. In this paper, we present an approach that uses analytical expressions, leading to a very significant reduction of the required computer resources. By this analytical approach, we investigate the lightning performance under different line arrangements; the study is also devoted to assessing the improvement that can be obtained by addition of underbuilt shield wires to arrangements in which only upper shield wires are typically used: it is shown that such a measure can lead to significant enhancements in terms of lightning performance.
An Analytical Approach to Assess the Influence of Shield Wires in Improving the Lightning Performance Due to Indirect Strokes / Andreotti, A.; Araneo, R.; Mahmood, F.; Piantini, A.; Rubinstein, M.. - In: IEEE TRANSACTIONS ON POWER DELIVERY. - ISSN 0885-8977. - 36:3(2021), pp. 1491-1498. [10.1109/TPWRD.2020.3009886]
An Analytical Approach to Assess the Influence of Shield Wires in Improving the Lightning Performance Due to Indirect Strokes
Andreotti A.;
2021
Abstract
The lightning performance of an overhead line due to indirect strokes is a measure of its ability to resist to surges produced by nearby lightning. The estimation of the lightning performance generally requires a huge number of calculations requiring computationally intensive simulations. In this paper, we present an approach that uses analytical expressions, leading to a very significant reduction of the required computer resources. By this analytical approach, we investigate the lightning performance under different line arrangements; the study is also devoted to assessing the improvement that can be obtained by addition of underbuilt shield wires to arrangements in which only upper shield wires are typically used: it is shown that such a measure can lead to significant enhancements in terms of lightning performance.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.