"When climbing the tower, take it slowly, carefully check whether the wire is broken, pay special attention to the important connection parts of the fittings such as the overhang wire clamp, and carefully check all the cotter pins. Recently, the staff of the Qujing Power Supply Bureau of China Southern Power Grid in Yunnan Province climbed the 60-meter high-speed rail tower in turn to carry out the acceptance of the new 500 thousand volt dragon copper line.
Work at an altitude of 60 meters. Photo by Xiao Benhua.
It is reported that the new 500 thousand volt dragon copper wire is an important channel for west-to-east power transmission, with a line length of 1005 kilometers, 228 new towers, and 500 kV Longhai substation and Tongdu switch station each expanded 1 500 kV interval. After the project is completed and put into operation, it will further optimize the grid structure in Northeast Yunnan and improve the power supply capacity and reliability of the power grid. In order to ensure that after the completion of the line, it can have live operation conditions in the first time, Qujing Power Supply Bureau formulated a thorough acceptance plan in advance, set up a professional party member commando team for power transmission and transportation inspection, carefully carried out process data supervision and acceptance, and carried out on-site "wiring" acceptance to ensure that the new line section was put into operation with zero defects.
Electric power workers carry out the acceptance of the "wiring" of the 500 thousand volt dragon copper wire. Photo by Xiao Benhua.
High-altitude 'wiring' acceptance is different from ground acceptance, 60 meters in the air, a slight shaking, will make the wire shake a lot, walking on the wire is like 'walking a tightrope'. Wang Qianlong, the leader of the sixth shift of the transmission management office of the Qujing Power Supply Bureau, said. While concentrating on ensuring safety, the acceptance personnel should also check the installation of wires and fittings to ensure that no body defects are missed.
In the next step, Qujing Power Supply Bureau will continue to adopt "ground + tower + UAV" and other "air, space, ground" integrated acceptance methods, make every effort to ensure that the 500 thousand volt dragon copper wire is put into operation as scheduled, improve the "west-to-east power transmission" channel structure, and provide a strong guarantee for the power grid to meet the peak winter.
Xiao Benhua Wang Qianlong.