| With the rapid development of China’s economy,the ultra high voltage 500 kV power grid has become the backbone of the transmission lines in China.The 750 kV AC transmission lines,the 1000 kV AC transmission lines,the ±660kV DC transmission lines and the ±800kV DC transmission lines have also been put into operation.The transmission capacity of EHV and UHV lines is large,the requirement of operation reliability is high,and the chance of power outage maintenance is less.So the live work has become an important technical means to ensure the long cycle safe and stable operation of EHV and UHV power grid.It is very difficult to carry out live work because of its particularity,so it is necessary to carry out the study of special tower type live working method.Through the study of this kind of problem,the quality and efficiency of EHV and UHV transmission line operation and maintenance can be improved,and the safety and stability of EHV and UHV power grid can be improved.It is of great significance to run.On the basis of the basic principle of live work and the key technology of live work,this paper,based on the basic principle of live work and the key technology of live work,combined with the 500 kV EHV LINGUAN line of our unit in charge of operation and maintenance,made a comparison of the existing tensioning tower type entry potential method,and emphatically introduced the operation points of the improved hanging basket method,the operation method of the tower hanging basket(ladder).According to the characteristics and shortcomings of existing working equipment for live working,a detailed introduction is made to the new tools developed and improved,which lays the foundation for the live work of the whole project of the EHV and UHV transmission lines to carry out the whole project,and combines the research results of the electrification operation of the EHV and UHV transmission lines,and the combination of the research results of the electrified operation of the EHV and UHV transmission lines.The operating experience of live operation and the characteristics of the live work item resistant to the tensioning tower have been made.The standardized operation guidance is compiled for the typical 5 items of operation,and the standardized configuration of the equipment is put forward. |
