[1]雷 潇,曾 宏,刘小江,等.特高压直流接地极线路雷击闪络风险研究[J].电瓷避雷器,2017,140(02):59-63.[doi:10.16188/j.isa.1003-8337.2017.02.012]
 LEI Xiao,ZENG Hong,LIU Xiaojiang,et al.Research on the Lightning Flashover Risk of UHVDC Electrode Lines[J].,2017,140(02):59-63.[doi:10.16188/j.isa.1003-8337.2017.02.012]
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特高压直流接地极线路雷击闪络风险研究()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
140卷
期数:
2017年02期
页码:
59-63
栏目:
避雷器
出版日期:
2017-04-30

文章信息/Info

Title:
Research on the Lightning Flashover Risk of UHVDC Electrode Lines
作者:
雷 潇曾 宏刘小江刘 强许 安
国网四川省电力公司 电力科学研究院,成都 610072
Author(s):
LEI XiaoZENG HongLIU XiaojiangLIU QiangXU An
Sichuan Electric Power Research Insititute,Chengdu 610072,China
关键词:
特高压直流输电接地极线路雷击闪络率招弧角
Keywords:
UHVDC electrode line lightning flashover rate arcing horn
DOI:
10.16188/j.isa.1003-8337.2017.02.012
文献标志码:
A
摘要:
接地极线路的安全稳定运行对整个特高压直流输电系统的可靠性有重要影响。针对目前接地极线路绝缘配合存在的问题,开展了招弧角雷击闪络试验,获取了间隙距离与雷击50%闪络电压的关系;建立了基于蒙特卡洛法的接地极线路的雷击闪络率计算模型,分析了主要影响因素。结果表明:目前我国的接地极线路绝缘强度较低,招弧角的存在,增大了雷击闪络风险;接地极线路的雷击闪络率与雷电流幅值概率分布和招弧角间隙距离密切相关,在进行绝缘配合设计时需考虑感应雷过电压。
Abstract:
Safe and stable operation of electrode line is important to the reliability of the UHVDC transmission system. In order to improve the insulation coordination defects of UHVDC electrode line, the relationship between the 50% lightning impulse breakdown voltages and the different gap distances was obtained through arcing horns lightning flashover experiments. Also, A model for calculating lightning flashover rate of electrode line based on Monte Carlo method was established, and the main impact factors of the lightning flashover rate were analyzed. Results show that: 1)The dielectric strength of UHVDC electrode line currently operating in China is low. The arcing horns has increasing the lightning flashover risk. 2)Lightning flashover rate of the electrode line is closely related to the probability distribution of lightning current amplitude and gap distance of arcing horns. Lighting induced overvoltage should be considered in insulation coordination design of UHVDC electrode line.

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备注/Memo

备注/Memo:
收稿日期:2015-12-08 作者简介:雷潇(1988—),男,博士,工程师,主要从事电力系统过电压与接地技术研究工作。
更新日期/Last Update: 1900-01-01