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| ±800kV云广UHVDC输电线路合成场强计算 | |
| 引用本文： | 万保权,邬雄,路遥,王琦,张广洲.±800kV云广UHVDC输电线路合成场强计算[J].高电压技术,2006,32(9):143-145. |
| 作者姓名： | 万保权 邬雄 路遥 王琦 张广洲 |
| 作者单位： | 1. 武汉大学电气工程学院,武汉,430072;国网武汉高压研究院,武汉,430074 2. 国网武汉高压研究院,武汉,430074 3. 南方电网技术研究中心,广州,510623 |
| 摘 要： | 为研究和确定高压直流输电线路的特有电磁环境参数(也是主要的环境影响指标之一)合成场强,利用有限元法计算了±800 kV云广特高压直流线路为5分裂和6分裂共5种极导线,极导线间距为22 m,对地最低距离为16、18、20和22 m时导线下方地面处的合成场强。提出了±800 kV云广特高压直流线路下地面合成场强按30kV/m控制,当采用5×LGJ-630/45及以上截面极导线时,导线最小对地高度应≮18m的结论。 |
| 关 键 词： | 合成场强 ±800kV 云广 特高压直流 输电线路 |
| 文章编号： | 1003-6520(2006)09-0143-03 |
| 修稿时间： | 2006年3月9日 |
Calculation on the Total Electric Field Under ±800 kV Yun-Guang UHVDC Transmission Line |
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| WAN Baoquan,WU Xiong,LU Yao,WANG Qi,ZHANG Guangzhou.Calculation on the Total Electric Field Under ±800 kV Yun-Guang UHVDC Transmission Line[J].High Voltage Engineering,2006,32(9):143-145. | |
| Authors: | WAN Baoquan WU Xiong LU Yao WANG Qi ZHANG Guangzhou |
| Affiliation: | (2)(1.School of Electrical Engineering,Wuhan University,Wuhan 430072,China;2.Wuhan High Voltage Research Institute of SGCC,Wuhan 430074,China;3.Technical Center of Southern Power Grid,Guangzhou 510623,China) |
| Abstract: | The total electric field above ground is special electric-magnetic environment phenomenon on HVDC transmission line.It is composed of two parts,one is the ion caused by corona of conductors,another is the electric field generated by voltage on conductors.This paper calculates the total electric field under 800kV Yun-Guang UHVDC transmission line with finite method. In calculation,7 different types of conductors(5 LGJ-630/45,5 LGJ-720/50,6 LGJ-500/35,6 LGJ-630/45,6 LGJ-720/50) is considered,and the least height of conductors above the ground is from 16m to 22m.The space between two pole conductors is 22m.The conclusion shows that the total electric field is determined by the types and height of conductors when the voltage and tower does not change on UHVDC transmission line,and it decreases with increscent section and high of conductors.It also shows that the total electric field under 800kV Yun-Guang UHVDC transmission line should be limited in 30kV/m,the conductor should use 5 LGJ-630/45 or larger section,and the least height of conductors above the ground should be higher than 18m. |
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