Development of tubing coupling detector used in snubbing service;

The control technique of the system in snubbing service is the synthesis of on-off flexible seal system and automation control method by changing the sealing state frequently.

Research of live working on 500 kV compact transmission lines in high altitude area

In accordance with the characteristics of 1 000 kV AC ultra high voltage transmission lines such as the high voltage,strong induced electric field and great difficulty in maintenance,the screening clothes of live working have been developed and tested according to relevant standards.

To provide technical parameters and ensure the safety for the live working on 750 kV AC transmission lines,the minimum approach distance was researched.

search and practice of live line work in 500 kV substation;

Development of live line works on distribution network——Congratulation on successful holding of nationwide distribution live line work competition;

Discussion on the live line work of overhead line operating overhauling in the 10kV distribution network

Connecting with the practice of the hot-line work in Taiyuan City s distribution network,this paper analyzes on the problems of the features,working modes,and safety protection,etc.

The experimental investigation of four hot-line work modes for ZMS1 tangent tower in 330kV transmission line, whose lines of each phase are split into three conductors, from Binling via Heping to Baiyin in Gansu Province was conducted by the simulated tower head with actual size.