Why is the power cut off when it thunders and rains (thunderstorm weather)?

According to your description, there are several main reasons for the power outage caused by thunderstorm weather:

(1) Line fault tripping caused by lightning strike;

(2) Thunderstorm weather may also reduce the insulation of lines, resulting in mutual discharge between lines and tripping;

(3) Thunderstorms are usually accompanied by strong winds, which may blow trees and sundries near the conductor and touch the conductor, especially in rural areas and mountainous areas. Lines or overhead lines are exposed, and some residents have not cleaned up nearby floating objects (plastic films, colorful flags, clothes, etc.). ) Notify the power supply department in time, resulting in short circuit fault between conductors.

I hope our answer is helpful to you.