[1]甘琪海.外引接地网对高速铁路牵引变电所降阻效果研究[J].高速铁路技术,2022,13(06):41-45.[doi:10.12098/j.issn.1674-8247.2022.06.008 ]
 GAN Qihai.A Study on the Effect of External Grounding Grid on Resistance Reduction of Traction Substation of High-speed Railway[J].HIGH SPEED RAILWAY TECHNOLOGY,2022,13(06):41-45.[doi:10.12098/j.issn.1674-8247.2022.06.008 ]
点击复制

外引接地网对高速铁路牵引变电所降阻效果研究()
分享到:

《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
13卷
期数:
2022年06期
页码:
41-45
栏目:
研究创新
出版日期:
2022-12-20

文章信息/Info

Title:
A Study on the Effect of External Grounding Grid on Resistance Reduction of Traction Substation of High-speed Railway
文章编号:
1674—8247 (2022) 06—0041—05
作者:
甘琪海
中国铁路南宁局集团有限公司, 南宁530029
Author(s):
GAN Qihai
China Railway Nanning Group Co. ,Ltd. ,Nanning 530029 ,China
关键词:
牵引变电所 接地网 外引接地网 接地电阻 垂直接地体
Keywords:
traction substationgrounding gridexternal grounding gridgrounding resistancevertical grounding electrode
分类号:
U244
DOI:
10.12098/j.issn.1674-8247.2022.06.008
文献标志码:
A
摘要:
本文针对某牵引变电所接地电阻过高的问题,开展了外引接地网降阻方案研究,采用土壤电阻率勘察确定了接地网布置位置,分析了外引接地网形状、网孔数量和垂直接地极位置等因素对接地网的接地电阻的影响。研究结果表明:(1)狭长形的水平外引接地网具有更好的降阻效果;当接地网面积不变,长宽比从2.5增加到40时,接地电阻将下降到原来的1/3;(2)垂直接地极的位置对降阻效果的影响非常大;当将5个垂直接地极按间距为40m布置在一条直线上时,接地电阻多下降21.8%;(3)接地改造前进行细致的土壤电阻率勘察和降阻方案仿真分析可极大地节省工程投入,本文研究成果可为变电所接地网改造提供参考。
Abstract:
In view of the high grounding resistance of a traction substation,this paper studies the resistance reduction scheme of the external grounding grid,determines the layout position of the grounding grid by soil resistivity survey,and analyzes the impact of factors such as the shape of the external grounding grid,the number of meshes and the position of vertical grounding electrodes on the grounding resistance of the grounding grid. The results show that:(1)The long and narrow horizontal external grounding grid has a better resistance reduction effect. When the area of the grounding grid remains unchanged and the length-width ratio increases from 2. 5 to 40,the grounding resistance will decrease to 1/3 of the original value.(2)The position of the vertical grounding electrode has a significant impact on the resistance reduction effect. When 5 vertical grounding electrodes are arranged on a straight line at an interval of 40 m,the grounding resistance will be reduced by 21. 8%.(3)Detailed soil resistivity survey and simulation analysis of the resistance reduction scheme before the modification of the grounding system can greatly save engineering investment. The research results in this paper can provide a reference for the modification of the grounding grid in substations.

参考文献/References:

[1] 陈纪纲,许晓蓉,林国松,等. 高速铁路牵引网双边供电方式下的故障测距策略研究[J]. 高速铁路技术,2021,12(5): 41 - 45. CHEN Jigang,XU Xiaorong,LIN Guosong,et al. Study on Fault Location Strategy for Traction Electric Network of High-Speed Railway in Double-End Feeding Mode[J]. High Speed Railway Technology, 2021,12(5): 41 - 45.
[2] 宁建斌. 铁路牵引变电所与开闭所的保护配合分析[J]. 铁道工程学报,2017,34(4): 70 - 74.NINGJianbin. Analysis of Protection Coordination between Substation and Sub-Section Postin Electric Railway[J]. Journal of Railway Engineering Society,2017,34(4): 70 - 74.
[3] 张志刚,曹晓斌,何方方,等. 牵引变电站接地网故障诊断方法研究[J]. 高速铁路技术,2015,6(3): 71 - 75. ZHANG Zhigang,CAO Xiaobin,HE Fangfang,et al. Research on Fault Diagnosis Methods for Traction Substation Grounding Network [J]. High Speed Railway Technology,2015,6(3): 71 - 75.
[4] 吴波. 牵引变电所接地网电气性能影响因素研究[J]. 电瓷避雷器,2019(3): 68 - 73. WUBo. Studyon Influencing Factors of Electrical Performance of Grounding GridinTraction Substation[J]. Insulatorsand Surge Arresters, 2019(3): 68 - 73.
[5] 丁峰. 高寒冻土地区牵引变电所接地系统设计探讨[J]. 铁道标准设计,2012,56(11): 95 - 98. DING Feng. Discussion on Grounding System Designof Traction Substation in Severe Coldand Frozen Soil Area[J]. Railway Standard Design,2012,56(11): 95 - 98.
[6] 陈燕. 牵引变电所接地电阻监测与降阻措施的研究[D]. 成都:西南交通大学,2019. CHENYan. Study on the Measure of the Ground Resistance Monitorand Reductionfor Traction Substation[D]. Chengdu:Southwest Jiaotong University,2019.
[7] 谭波,杨建军,鲁海亮,等. 接地网电位升对10kV避雷器的反击仿真分析[J]. 高电压技术,2013,39(5): 1265 - 1272. TAN Bo,YANG Jianjun,LU Hailiang,et al. Backflash Simulation Analysis of Ground Potential Rise on 10kV Arrester[J]. High Voltage Engineering,2013,39(5): 1265 - 1272.
[8] 李承阳,苏侃,张毅,等. 变电站地电位升对低压避雷器的反击仿真研究[J]. 电瓷避雷器,2020(4): 178 - 183. LI Chengyang,SU Kan,ZHANG Yi,et al. Backflash Simulation Research on Substation Ground Potential Rise to Low Voltage Arrester [J]. Insulatorsand Surge Arresters,2020(4): 178 - 183.
[9] 沈群武,许慧芳,江学斌. 降低变电所接地网工频接地电阻的几种有效方法[J]. 浙江电力,2006,25(2): 42 - 44. SHEN Qunwu,XU Huifang,JIANG Xuebin. Some Effective Methods to Reduce Power-Frequency Grounding Resistanee of Substation Grid [J]. Zhejiang Electric Power,2006,25(2): 42 - 44.
[10] 侯峰,侯蜀君. 高土壤电阻率地区牵引变电所接地设计[J]. 铁道工程学报,2012,29(6): 71 - 73,77. HOU Feng,HOU Shujun. Earthing Design of Traction Substations in Regions with High Soil Resistivity[J]. Journal of Railway Engineering Society,2012,29(6): 71 - 73,77.
[11] 邢琳,陈明,吴景梅,等. 高土壤电阻率地区某220 kV变电站接地方案研究[J]. 电瓷避雷器,2020(4): 167 - 172. XING Lin,CHEN Ming,WU Jingmei,et al. Study on Grounding Scheme of a 220 kV Substation in High Soil Resistivity Area[J]. Insulatorsand Surge Arresters,2020(4): 167 - 172.

相似文献/References:

[1]曹毅峰,文 菓.基于IEEE标准的某国外项目牵引变电所镍镉电池容量计算研究[J].高速铁路技术,2023,14(05):62.[doi:10.12098/j.issn.1674-8247.2023.05.012]
 CAO Yifeng,WEN Guo.A Study on Calculation of Capacity of Nickel-cadmium Accumulators in Traction Substation for an Overseas Project Based on IEEE Standard[J].HIGH SPEED RAILWAY TECHNOLOGY,2023,14(06):62.[doi:10.12098/j.issn.1674-8247.2023.05.012]
[2]杜熙.BIM技术在高速铁路牵引变电所监控巡视系统工程设计中的应用研究[J].高速铁路技术,2024,15(03):50.[doi:10.12098/j.issn.1674-8247.2024.03.010]
 DU Xi.Study on Application of BIM Technology in Design of Monitoring and Patrol System for High-speed Railway Traction Substation[J].HIGH SPEED RAILWAY TECHNOLOGY,2024,15(06):50.[doi:10.12098/j.issn.1674-8247.2024.03.010]

备注/Memo

备注/Memo:
收稿日期:2021-09-24
作者简介:甘琪海(1974-),男,高级工程师。
更新日期/Last Update: 2022-12-20