Analysis of Live Working Safety Distance for 750kV Double Circuit Transmission Line in Different Altitude Areas

Abstract:

In order to determine the required live working safety distance for 750kV double circuit transmission line in different altitude areas of China, by using the test data of 750kV double circuit transmission line in the low altitude areas, and combining the common altitude correction methods, the live working safety distances of different altitude correction methods are obtained. By comparing and analyzing the results of different analysis methods, the required minimum approach distances and minimum combined gap distances of live working are recommended under different working conditions in the altitude of 1000m ~ 5000m areas. The results could provide technical reference for 750kV double circuit transmission line in different altitude areas.

• Periodical: Advanced Materials Research (Volumes 986-987)
• Pages: 227-230
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.986-987.227
• Online since: July 2014
• Authors: Hui Sun*, Yu Jian Ding, Qing Xie
• Keywords: 750kV Double Circuit Transmission Line, Altitude Correction, Combined Gap, Live Working, Safety Distance

References

[1] HU Yi，WANG Li-nong，LIU Kai，et a1．Research of live working on 750 kV double circuit AC transmission line [J] ． High Voltage Engineering， 2009， 35(2): 373-378.

[2] DL/T 1060-2007 Technical guide for live working in 750kV AC transmission line[S] ， 2007.

[3] GB/T 16927．1—2011 High-voltage test techniques Part 1: General definitions and test requirements[S] ． 2011.

[4] IEC．IEC 60071-2—1996 Insulation coordination，part 2：Application guide-third edition[S] ．1996.

[5] DL/T 620—1997 Overvoltage protection and insulation coordination for AC electrical installations[S] ．1997.

[6] Ding Yi-zheng． Live working technology foundation [M] ． Beijing， China: China Electric Power Press， 1998.

[7] ZHOU Ze-cun， SHEN Qi-gong． High Voltage Technology [M] ． Beijing， China: China Electric Power Press， 2007.