Analysis on the characteristics of lightning trip-out of power transmission lines caused by dense thunderstorms in Zhejiang province

Zhejiang Province is located in a multi-lightning region, and it will be affected by lightning in the thunderstorm season every year, resulting in considerable economic losses and safety issues. To mitigate the losses induced by thunder and lightning disasters, the analysis and research on the active areas of thunder and lightning activities and the characteristics of lightning trip are of paramount importance. Firstly, this paper analyses the meteorological characteristics of lightning in Zhejiang Province from the distribution of active areas of lightning activity, the characteristics of regional variations, the characteristics of time distribution, and the frequency of dense thunderstorms. Secondly, the characteristics of lightning trip of power equipment are analysed. Finally, based on the historical data of lightning and the failure data of dense thunderstorms, the overall active areas of lightning activity are categorized, and the lightning protection strategies under dense thunderstorms are further subdivided.