Title :
A testing research on composite air clearance for live line working on 500 kV DC transmission lines
Author :
Ruzhang, Wang ; Weishu, Hunag ; Goxiang, Yin
Author_Institution :
EPRI, China
fDate :
29 Oct-3 Nov 1995
Abstract :
In this paper, the insulation characteristics of composite air clearances of both tension towers and suspension towers for live line working on 500 kV DC transmission lines are introduced. The tests are carried out in two ways. One is to simulate the man riding on the tension insulator strings moving to the conductor side. The other is to simulate the soft ladder carrying a man slipping to the conductor side along the slideway which is mounted on the crossarm. During the test, different working conditions are considered, such as tests with different switching impulse waveforms, the existence of damaged insulators within the string and so on. As a result, the safety and reliability of live line working on 500 kV DC power transmission lines has been confirmed
Keywords :
HVDC power transmission; insulators; maintenance engineering; poles and towers; power overhead lines; power system measurement; power transmission lines; testing; 500 kV; DC transmission lines; composite air clearance; live line working; maintenance; reliability; safety; suspension towers; switching impulse waveforms; tension insulator strings; tension towers; testing; Circuit testing; Conductors; Impulse testing; Insulation; Insulator testing; Poles and towers; Power transmission lines; Shape measurement; Transmission lines; Voltage;
Conference_Titel :
Transmission and Distribution Construction and Live Line Maintenance, 1995. ESMO-95 Proceedings., Seventh International Conference on
Conference_Location :
Columbus, OH
Print_ISBN :
0-7803-2506-0
DOI :
10.1109/TDCLLM.1995.485055
