Fractal-based approach for direct-stroke shielding of substations against lightning

The overall objective of the research work is the estimation of lightning incidence to high voltage substations following a novel fractal-based approach, which considers the stochastic nature of the lightning interception phenomenon. This approach enables the application of chaos theory to lightning protection of substations. In the context of this research work a generalized methodology, as well as guidelines, are developed for the assessment of the shielding design of substations. An application to typical substations is made together with a comparison of the proposed method with that of IEEE Std 998-2012 on the shielding design.

PI: Asst. Prof. Thomas Tsovilis

Research results can be found in the following publications:

A. I. Ioannidis and T. E. Tsovilis, “Fractal-based approach for evaluating the shielding design of high voltage substations against direct lightning strikes,” in Proc. 2020 IEEE IAS Annual Meeting, Detroit, MI, USA, Oct. 2020. Link

A. I. Ioannidis and T. E. Tsovilis, “Shielding failure of high voltage substations: A fractal-based approach for negative and positive lightning,” IEEE Trans. Industry Applications, vol. 57, no.3, pp. 2317-2325, May-June 2021. Link

Dissemination – Research Committee of the Aristotle University of Thessaloniki (in Greek). Link