Influence of Heat-Resistant Conductor Operating Temperature on Safety Distance of Live Working

ZHOU Bingling; LIU Kai; WANG Yongqiang; LIU Ting; WU Tian

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Electric Power Construction ›› 2013, Vol. 34 ›› Issue (5) : 30-34.

Influence of Heat-Resistant Conductor Operating Temperature on Safety Distance of Live Working

ZHOU Bingling1,2，LIU Kai3，WANG Yongqiang4，LIU Ting3，WU Tian3

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Abstract

In order to study the impact of heat-resistant conductor operating temperature on the safety distance of live working on power transmission line, the temperature distribution of the heat-resistant conductor was obtained at 180 ℃of the temperature of conductor，and the switching impulse discharge characteristics of 1.0~1.5 m air gap between simulated conductor and tower were gained when the temperature of conductor was between 160 ℃ and 240 ℃. And the influence of heat-resistant conductor operating temperature on the discharge characteristics of the simulated air gap between conductor and tower was analyzed by theoretical calculation, whose results had good consistency with the experimental results. The results show that, when the operating temperature of heat-resistant conductor is 240 ℃, the influence range of high temperature conductor on ambient air temperature is no more than 10 cm range, and the influence on the switching impulse discharge voltage of 1.0~1.5 m air gap is about 2 %. Therefore, the influence of heat-resistant conductor operating temperature on the safety distance can be ignored in the live working of power transmission line.

Key words

heat-resistant conductor / operating temperature / air gap / discharge characteristics / live working / safety distance

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ZHOU Bingling，LIU Kai，WANG Yongqiang，LIU Ting，WU Tian. Influence of Heat-Resistant Conductor Operating Temperature on Safety Distance of Live Working[J]. Electric Power Construction. 2013, 34(5): 30-34

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