From 2017 to 2018,in order to improve the quality and efficiency of operation and maintenance of highvoltage transmission lines,a mega-city begin to normalize the fine patrol operation of manned helicopters,fast laser scanning channel operation of helicopters,multi-rotor fine patrol operation of drone and multi-rotor laser scanning ranging operation of drone,more than 5500 various types of hidden defects are found.In this paper,the big data of patrol defects are analyzed in detail from several dimensions,such as defect level,defect occurrence location,defect generation stage and whether the defect is difficult to find on the ground.Methods and countermeasures for improving the quality of operation and maintenance of high voltage transmission lines in daily operation and maintenance,acceptance of newly built lines,man-machine coordination,assessment mechanism of line managers and defect management are put forward.
Heilongjiang Electric Power
high voltage transmission line
helicopter and drone patrol
big data analysis
operation and maintenance management