Characteristics of Lightning Faults of 220 kV and Above Overhead Transmission Lines in Zhejiang Province in last 15 Years

Lightning is the most frequent reason for high voltage overhead transmission lines faults. Due to the stochastic nature of lightning, the theoretic approaches for evaluation of the performance of overhead transmission lines are far from complete. The field experiences from the practitioners are of great value in lightning performance researches. This work collected a large dataset of lightning faults happened during 2004-2018 in the 220 kV and above overhead transmission lines in Zhejiang province. The characteristics, like temporal, spatial and double circuits faults, of the lightning faults are analyzed in this work. The mechanisms behind these characteristics are also explained in this work, which hope will be helpful in the future researches in lightning performance of overhead transmission lines.