Live line work of replacement technology of single insulator on 750 kV tension-resistant double tension insulator strings

To reduce planned and unplanned power cut of 750 kV transmission line,use of the "cross two short three" method carry out the live work of the tension-resistant single low value or zero value insulator replacement.Aiming at the problems of the "cross two short three" method,makes technological improvements on the operation tools and the work flow processes,reduces the work hardness of the operators furtherly,improves work efficiency,expands operations space and reduces the risk of work security.The method has significant safe and economic benefits.