[1]陈 伟,李少东,孙 勇,等.垂直型直流接地极埋深的优化配置研究[J].电瓷避雷器,2020,(02):56-63.[doi:10.16188/j.isa.1003-8337.2020.02.010]
 CHEN Wei,LI Shaodong,SUN Yong,et al.Study on the Optimal Configuration of Buried Depth of Vertical DC Grounding Electrodes[J].,2020,(02):56-63.[doi:10.16188/j.isa.1003-8337.2020.02.010]
点击复制

垂直型直流接地极埋深的优化配置研究()
分享到:

《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年02期
页码:
56-63
栏目:
避雷器
出版日期:
2020-04-25

文章信息/Info

Title:
Study on the Optimal Configuration of Buried Depth of Vertical DC Grounding Electrodes
作者:
陈 伟1 李少东2 孙 勇1 鲁海亮2 蓝 磊2 文习山2
(1. 中国南方电网超高压输电公司检修试验中心,广州 510663; 2.武汉大学电气与自动化学院,武汉 430072)
Author(s):
CHEN Wei1 LI Shaodong2 SUN Yong1 LU Hailiang2 LAN Lei2 WEN Xishan2
(1.EHV Power Transmission Company Maintenance & Test Center, China Southern Power Grid, Guangzhou 510663, China; 2.School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China)
关键词:
垂直接地极 电极埋深 椭圆形 跨步电势 长轴端部
Keywords:
vertical grounding electrode buried depth of electrodes ellipse step potential the end of the long axis
DOI:
10.16188/j.isa.1003-8337.2020.02.010
摘要:
垂直接地极的主体是分散的数根或数十根垂直电极,这一结构特点使垂直接地极的埋深问题与传统水平接地极有很大区别。本文首先采用单根电极模型研究了典型土壤模型下埋深对接地极电气性能影响,提出垂直接地极埋深选取的基本原则。由于垂直接地极的电极一般呈椭圆形布置,计算发现最大跨步电势往往出现在长轴端部附近,提出适当增大长轴端部附近电极的埋深改善接地极跨步电势分布特性的思路。最后结合长翠村垂直接地极跨步电势的实测数据和仿真计算结果,验证了椭圆长轴端部附近跨步电势较高的规律以及增加长轴端部附近电极埋深的跨步电势分布特性改善方法,本文研究结论可为垂直接地极的设计提供一定参考。
Abstract:
The main body of a vertical grounding electrode is a number of scattered vertical electrodes, which makes buried depth of vertical grounding electrodes very different from that of traditional horizontal grounding electrodes. In this paper, single electrode models are used to study the influence of buried depth on electrical performance of electrodes under typical soil model, and the basic principle of selection of buried depth is proposed. As electrodes of a vertical ground electrode are usually arranged in ellipse, it is found that the maximum step potential often appears near the end of the long axis, and the idea that buried depth of electrodes near the end of the long axis is appropriately increased to improve the cross step electric potential distribution characteristics of grounding electrodes is put forward. Finally, according to the measured data and simulation results of step potential of the vertical grounding electrode in Chang Cui Village, the law of higher step potential near the end of elliptical axes and the way for the improvement of the distribution characteristics of step potential are verified. Conclusions of this paper can be used as a reference for the design of vertical grounding poles.

参考文献/References:

[1] 赵畹君.高压直流输电工程技术[M].北京:中国电力出版社,2004.
[2]徐碧川,鲁海亮,潘卓洪,等.直流接地极极址勘测的研究[J].电力自动化设备,2016, 36(1):149-154.XU Bichuan, LU Hailiang, PAN Zhuohong, et al. Research of DC ground electrode site survey[J]. Electric Power Automation Equipment, 2016, 36(1): 149-154.
[3]周友斌,全江涛,文习山,等.直流输电分布式接地极建模与应用[J].电网技术,2015, 39(2):387-392.ZHOU Youbin, QUAN Jiangtao, WEN Xishan, et al. Modeling of distributed grounding electrodes for HVDC power transmission system and its application[J]. Power System Technology, 2015, 39(2): 387-392.
[4]王建武,张劲松,李岩,等.广域接地极方案初步研究[J].高压电器,2010, 46(12):25-28.WANG Jianwu, ZHANG Jinsong, LI Yan, et al. Primary research on HVDC wan grounding electrode[J]. High Voltage Apparatus, 2010, 46(12): 25-28.
[5]周锋,吴斌,文锦霞,等.基于PSCAD的UHVDC换流站共用接地极影响研究[J].电瓷避雷器,2012(2):105-110.ZHOU Feng, WU Bin, WEN Jinxia, et al. Research on effect of common grounding electrode in UHVDC stations converter based on PSCAD[J]. Insulators and Surge Arresters, 2012(2): 105-110.
[6]王建武,杜忠东,李家源,等.UHVDC垂直接地极技术经济性能分析[J].高电压技术,2006, 32(9):59-61.WANG Jianwu, DU Zhongdong, LI Jiayuan, et al. Grounding performance study and economic comparison on vertical grounding electrodes of UHVDC[J]. High Voltage Engineering, 2006, 32(9): 59-61.
[7]周挺,曾连生,王伟刚,等.垂直型接地极在±800 kV普洱换流站的应用[J].南方电网技术,2015, 9(11):31-35.ZHOU Ting, ZENG Liansheng, WANG Weigang, et al. Application of vertical ground electrode in ±800 kV Pu'er converter station[J]. Southern Power System Technology, 2015, 9(11): 31-35.
[8]电力规划设计总院. 高压直流输电大地返回系统设计技术规范:DL/T 5224—2014[S].北京:国家能源局.
[9]解广润.电力系统接地技术[M].北京:水利电力出版社,1991.
[10]何金良,曾嵘.电力系统接地技术[M].北京:科学出版社,2007.
[11]陈水明,施广德.圆环形直流输电接地极电流场分析[J].高电压技术,1994(1):3-7.CHEN Shuiming, SHI Guangde. Analysis of current fields near ring-type HVDC ground electrodes[J]. High Voltage Engineering, 1994(1): 3-7.
[12]曾连生.高压直流输电陆地接地极设计:接地极形状,尺寸和埋深的确定[J].电力建设,1994(2):12-17.ZENG Liansheng. Design of HVDC land ground electrode:determination of shape,size and depth[J]. Electric Power Construction, 1994(2): 12-17.
[13]高小刚,周羽生,王云飞,等.UHVDC换流站环形接地极埋深特性研究[J].电瓷避雷器,2012(2):72-76.GAO Xiaogang, ZHOU Yusheng, WANG Yunfei, et al. Research on the burial depths characteristics of the annular grounding electrodes in UHVDC converter stations[J]. Insulators and Surge Arresters, 2012(2): 72-76.
[14]刘慧妍,徐明,朱斌,等.埋深对高压直流输电三圆环接地极电流场特性的影响分析[J].水电能源科学,2016(10):178-181.LIU Huiyan, XU Ming, ZHU Bin, et al. Analysis of the influence of buried depth on current field characteristics of three ring grounding electrode in HVDC transmission[J]. Water Resources and Power, 2016(10): 178-181.
[15]王羽,李晓萍,罗思敏,等.垂直型直流接地极暂态温升计算与试验[J].中国电机工程学报,2013, 33(10):184-190, 2.WANG Yu, LI Xiaoping, LUO Saimin, et al. Test and computation for vertical ground electrode's transient temperature rise[J]. Proceedings of the CSEE, 2013, 33(10): 184-190, 2.
[16]李腾飞, 罗日成, 潘俊文,等. 降阻剂对垂直型直流接地极电气性能参数影响分析[J]. 电瓷避雷器, 2018(1):132-136.LI Tengfei, LUO Richeng, PAN Junwen, et al. Analysis of infulence of resistance reducing material on electrical performance parameters of vertical DC ground electrode[J]. Insulators and Surge Arresters, 2018(1):132-136.

备注/Memo

备注/Memo:
收稿日期:2018-07-03作者简介:陈伟(1984—),男,硕士,高级工程师,研究方向为防雷与接地技术。
更新日期/Last Update: 2020-04-25