Influence of Lightning Surge on Photovoltaics Considering LPZ Protection Level and IEC-60364 Grounding System
Jae-Young Cho, Kyu‐Ho Kim, Jea-Kyun Lee, J.W. Woo · The Transactions of The Korean Institute of Electrical Engineers · 2019
This paper analyzes the change of lightning overvoltage due to the grounding system and LPZ consideration. In IEC-60364, three different grounding methods are introduced to protect the facilities from transient overvoltage in different situation. IEC-61312 defines the LPZ(lightning protection zone) so that different methods of lightning protection can be taken at different protection level. by adjusting surge arresters as specified in IEC-62305. This paper simulates how much lightning overvoltage is occurred in photovoltaics and how its condition varies under the change of grounding system method and the type of surge protection device used.