Simulation Analysis of Electric Field Protection for Live-Working on 1 000 kV and 500 kV AC Four-Circuit Transmission Lines on One Tower

doi:10.11930/j.issn.1004-9649.2014.2.78.5

Abstract

Abstract: Electric field distribution of 1 000 kV and 500 kV AC four-circuit lines on one tower is quite different from that of single-voltage EHV/UHV transmission lines and electric field for live-working becomes more complicated. The field intensity distribution for live-working is simulated in this paper with 3D boundary element method of power frequency electric field and a human body model is established for analyzing the electric field intensity of the human body in different parts in the typical operating conditions including ground potential and equipotential, based on which the electric field protection measures for the live-workers are determined. It is concluded that the safety protection requirements can be met for the equipotential workers who wear screening clothes with 60 dB screen efficiency and screening helmet with 20 dB screen efficiency, and for the ground potential workers who wear conventional screening clothes or electrostatic shielding clothes.

Key words: live-working, four-circuit on one tower, AC transmission line, electric field protection, simulation

CLC Number:

TM84

SU Zi-ming, PENG Yong, LIU Kai, LIU Ting, XIAO Bin, WU Tian, TANG Pan. Simulation Analysis of Electric Field Protection for Live-Working on 1 000 kV and 500 kV AC Four-Circuit Transmission Lines on One Tower[J]. Electric Power, 2014, 47(2): 78-83.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.2.78.5

https://www.electricpower.com.cn/EN/Y2014/V47/I2/78

References

[1] 胡毅,王力农,刘凯,等. 750 kV输电线路带电作业安全防护研究[J]. 高电压技术,2006,32（11）：1-4.
HU Yi, WANG Li-nong, LIU Kai, et al . Research of safety protection for live working on 750 kV transmission lines [J]. High Voltage Engineering, 2006, 32(11): 1-4.
[2] 胡毅,王力农,刘凯,等. 1 000 kV交流输电线路带电作业安全防护研究[J]. 高电压技术,2006,32（12）：74-77.
HU Yi, WANG Li-nong, LIU Kai, et al . Research of safety protection for live working on 1 000 kV ultra high voltage transmission line [J]. High Voltage Engineering, 2006, 32(12):74-77.
[3] 胡涛,胡毅,李景禄,等. 输电线路带电作业的安全防护[J]. 高电压技术,2006,32（5）：22-25.
HU Tao, HU Yi, LI Jing-lu, et al . Safe Protection for live working on transmission line[J]. High Voltage Engineering, 2006, 32(5): 22-25.
[4] 张文英,邓华,钱晶,等. 云南电网紧凑型500 kV线路带电作业安全性研究[J]. 中国电力,2013,46（7）：66-71.
ZHANG Wen-ying, DENG Hua, QIAN Jing, et al . Research on security of live working on compact 500 kV transmission line in Yunnan power grid [J]. Electric Power, 2013, 46(7): 66-71.
[5] 张禄琦,郝阳,张小力,等. 1 000 kV与500 kV同塔四回交流输电线路杆塔型式研究[J]. 中国电力,2013,46（4）：32-36.
types of 1 000 kV and 500 kV four-circuit AC transmission lines on one tower [J]. Electric Power, 2013, 46(4): 32-36.
[6] 胡毅,王力农,刘凯,等. 特高压交流输电线路带电作业现场应用试验[J]. 高电压技术,2009,35（9）：2053-2058.
HU Yi, WANG Li-nong, LIU Kai, et al . On-site application test of live working of UHV AC Transmission line[J]. High Voltage Engineering. 2009, 35(9): 2053-2058.
[7] 师宝安,李倩. 500 kV同塔四回输电线路的感应电压和感应电流[J]. 电力建设,2012,33（9）：31-34.
SHI Bao-an, LI Qian. Induced voltage and current of transmission line of 500 kV Quadruple-circuit in one tower[J]. Electric Power Construction, 2012, 33(9): 31-34.
[8] 杨新法,刘洪正,孟海磊,等. ±660 kV直流输电带电作业安全防护的试验研究[J]. 电力建设,2012,33（3）：1-5.
YANG Xin-fa, LIU Hong-zheng, MENG Hai-lei, et al . Experimental research on safety protection for live-wire operation on ±660 kV DC power transmission line[J]. Electric Power Construction, 2012, 33(3): 1-5.
[9] 丁一正. 带电作业技术基础[M]. 北京：中国电力出版社,1998.
[10] JANISCHEWSKYJ W, GELA G. Finite element solution for electric fields of coronating DC transmission lines [J]. IEEE Trans on Power Apparatus and Systems, 1979, 98(3): 1000-1012.
[11] GB 6568—2008 带电作业用屏蔽服[S].
[12] GB/T25726—2010 1 000 kV带电作业用屏蔽服装[S].
[13] 胡毅. 送变电带电作业技术[M]. 北京：中国电力出版社,2004.
[14] 刘振亚. 特高压电网[M]. 北京：中国经济出版社,2005.
[15] DL/T 966—2005 送电线路带电作业技术导则[S].