What happened when lightning struck the Canton Tower?

On the evening of June 7, netizen @ far Bin took photos of the entire process of lightning striking the Guangzhou Tower. It is understood that every thunderstorm season, pictures of Canton Tower being "struck by lightning" will be quickly forwarded. In fact, this is not "being struck by lightning", but "catching". Canton Tower achieves the purpose of lightning protection by proactively striking out and "kissing" lightning.

According to Guangdong weather news, from May 21 to 9:00 on June 7, Guangdong has issued 1,057 rainstorm warning signals, including 73 red rainstorm warnings. It is expected that heavy rains will continue in Guangdong from the 7th to the 9th, with heavy rainstorms in some cities and counties, and locally extremely heavy rains, accompanied by thunderstorms and strong winds of about level 8. As of 6:00 on the 8th, red warning signals for heavy rain are in effect in 15 places in Guangdong.

Extended information

The hazards of lightning strikes:

1. Direct lightning strike

Electric clouds cause violent impact on a certain point on the earth. The discharge phenomenon is called direct lightning strike. Its destructive power is very huge. If it cannot be discharged into the earth quickly, it will cause serious damage or damage to objects, buildings, facilities, people and animals in the discharge channel - fire, damage to buildings, destruction of electronic and electrical systems, and even endangering the lives of humans and animals.

2. Lightning wave intrusion

Lightning does not discharge directly on the building and equipment itself, but on the cables laid outside the building. Lightning waves or overvoltages on cables spread along the cable lines almost at the speed of light, invading and endangering various systems such as indoor electronic equipment and automation control. Therefore, electronic equipment, control systems, etc. may be damaged before thunder is heard.

3. Induced overvoltage

Lightning strikes occur near equipment, facilities or lines, or lightning does not discharge directly to the ground, but only discharges between clouds. Lightning discharges electrical charges and induces overvoltages in power and data transmission lines and metal supports on metal pipes.

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