Danger. The height of large windmills is generally around 100 meters, which is roughly equivalent to a high-rise building of more than 30 stories. When there is strong wind, these large wind turbines that produce electricity must activate the braking mechanism to prevent the wind turbines from spinning. However, the braking mechanism of one of the windmills failed, causing the windmill's leaves to spin rapidly in the wind. The windmill was spinning too fast, the current generated by the generator inside was too great, causing a fire inside the generator. The windmill generator part exploded, and with thick black smoke and raging fire, the entire upper part continued to disintegrate. After the top collapsed, the bottom of the entire supporting part of the windmill was also broken by the strong wind, and the windmill completely fell.
The personDoes the questioner want to ask “the reason why the wind turbines caught fire”? Fires caused by lightning and electrical short circuits.
1. Lightning-Initiated Fires: A large amount of fire data shows that lightning strikes are one of the leading causes of fires in wind turbines. The wind turbines are located more than 50 m above sea level. there are no lightning protection installations or the installations are poorly maintained. The risk of fire due to lightning is particularly high.
2. Fire caused by electrical short circuit: An electrical short circuit caused by transformer body failure or pollution flashover. The fire is caused by a ground fault, short circuit and generated electricity, which causes components to overload and subsequently overheat.