I remember the first thunderstorm in Kunming in 2014. The thunderstorm caused many lines to be struck by lightning, causing the line to trip. Cause serious economic losses.
In order to minimize the damage caused by lightning strikes on transmission lines, Yunnan Power Grid Company will implement 30 lightning-prone lightning strikes of 110 kV and above in Yunnan Province this year on the basis of analysis and assessment of lightning monitoring data in the line corridor for the past five years. Differentiating lightning protection and improving the technical and economical efficiency of mine protection projects.
It is reported that Yunnan's mountainous area accounts for 94% of the province's total area, and more than 90% of the corridors of the line must cross the mountain jungle, and the whole area is in the multi-relief area. In 2013, the trip caused by lightning strikes on the 110 kV line of Yunnan Power Grid was 469 times, accounting for 68.97% of the total number of line trips. From January to April this year, Yunnan Power Grid Company had a total of 21 lightning strikes on 110 kV and above lines, which accounted for 20% of line trips.
Correctly improve the lightning protection equipment, strengthen lightning protection, and start a comprehensive "sweeping action", I believe that in the near future lightning will not cause harm to the line and other equipment to ensure social harmony and tranquility!
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