High altitude operation crown speed difference automatic controller safeguards the safety of ultra-high voltage line construction

Recently, in Kaihui Town, Changsha County, a "silent battle" with high-altitude and strong electricity quietly unfolded. On the 1000 kV Jingxiao line, power workers need to install windproof cables for this core ultra-high voltage transmission artery in Hunan without power outages throughout the entire process.

At an altitude of nearly 150 meters, there were buzzing wires underfoot, which made me feel uncomfortable. The workers wear safety helmets and full body seat belts, and during the tower climbing process, they also hang a speed differential controller - once they slip under their feet, this device can instantly lock to prevent falling. The wind on the tower is strong, the workspace is narrow, and every step must be taken steadily. The cable and accessories installed this time weigh 170 kilograms and require precise hanging at high altitude. Personnel must also maintain a safe distance of 6.8 meters at all times in a full voltage environment.

The ground lifting commander stared at the slowly rising cable, and the tower workers cooperated with each other, fixing the base with bolts and adjusting the angle. After nearly ten hours of hard work, the 20 meter long Lasso was finally accurately positioned. If the old method of power outage operation is followed, both industrial and agricultural production and residential electricity along the line will be affected. Although live working is difficult, the electricity will not stop for a second, and the hidden dangers will be successfully eliminated.

From the quick installation of the automatic control device to every shift of the seat belt, these seemingly inconspicuous protective equipment are the most reliable support at a height of 100 meters. The installed windproof cable is quietly tightened, and in the event of strong winds in the future, the swing amplitude of the wire can be effectively restrained, providing an additional guarantee for the operation of this ultra-high voltage channel.