Influence of Complex Soil Structure on Ground Potential Distribution as Monopolar Operation of HVDC Systsems

ZHANG Jun; CAO Xiaobin; JIN Weidong; ZHANG Siyuan; ZHANG Bide; ZHANG Yu

doi:10.13296/j.1001-1609.hva.2026.03.024

您当前的位置：

首页 >

文章列表页 >

Influence of Complex Soil Structure on Ground Potential Distribution as Monopolar Operation of HVDC Systsems

Research & Analysis | 更新时间：2026-03-11

- Influence of Complex Soil Structure on Ground Potential Distribution as Monopolar Operation of HVDC Systsems
- High Voltage Apparatus Vol. 62, Issue 3, Pages: 199-211(2026)
- 作者机构：
  
  西南交通大学电气工程学院，成都 610031
  国网四川省电力公司甘孜供电公司，四川甘孜 626099
  西南电力设计院有限公司，成都 610021
  西华大学电气与电子信息学院，成都 610051
  国网四川省电力公司电力科学研究院，成都 610041
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.03.024
  CLC：
- Received：08 September 2025，
  
  Revised：2025-11-10，
  
  Published：16 March 2026
- 稿件说明：
移动端阅览
ZHANG Jun, CAO Xiaobin, JIN Weidong, et al. Influence of Complex Soil Structure on Ground Potential Distribution as Monopolar Operation of HVDC Systsems[J]. High Voltage Apparatus, 2026, 62(3): 199-211.
DOI：

ZHANG Jun, CAO Xiaobin, JIN Weidong, et al. Influence of Complex Soil Structure on Ground Potential Distribution as Monopolar Operation of HVDC Systsems[J]. High Voltage Apparatus, 2026, 62(3): 199-211. DOI： 10.13296/j.1001-1609.hva.2026.03.024.

摘要

高压直流（HVDC）输电系统接地极引起的地电位和电场分布，受土壤分层结构的影响，而接地极选址面临复杂土壤结构的背景。因此研究土壤结构中各种因素对地电位和电场分布规律的影响，将有助于改善其分布情况。文中以研究格林函数的微分方程和电位行波的反折射传播方式为方法入口，得到分层土壤结构下存在的振荡衰减函数，提取出电荷积累效应矩阵用于表示积累电荷再分布的振荡衰减过程，获得电位分布在水平、垂直和复合土壤结构下对土壤层厚度

，反折射率

和电流源位置

的表现差异。得出反折射率是影响振荡衰减过程的主要和持续因素，土壤层厚度是次要且持续因素，位置是初始且短暂因素。指出复合土壤结构中电位分布是垂直和水平电荷积累效应的相互影响，其斜方向的等效距离点为两者相互影响效果，土壤层厚度和综合反射率分别以距离函数和等效电荷方式影响衰减速度。最后根据某直流输电工程接地极地质勘测与季节变化情况，构成复杂土壤结构，并考虑接地极位置、土壤层厚度和土壤电阻率三大影响因素，模拟分析了极址5～25 km范围的地电位和电场分布规律。

Abstract

The distribution of ground potential and electric filed due to the grounding electrodesof high voltage direct current (HVDC) transmission system influenced by soil stratification

while the selection of grounding electrode sites must account for complex soil structures. Theref

ore

the study of the influence of various of the soil structure on the ground potential and electric field distribution will be helpful for improving its distribution. In this paper the differential equations for the Green function and the propagation mode of refractd and reflected potential travelling waves are employed as the methological entry point

the oscillatory attenuation fucntion present in soil stratification are obtained and the matrix shown on accumulating electric charge is extracted to represent the oscillary attenuation process of accumulated charge redistribution

which reveals how the potential distribution responds differently to soil layer thickness (

)

the

-ratio and current source position (

) across horizontal

vertical and composite structures of soil. It is concluded that the

-ratio is the primary and persistent factor

the

is a secondary yet persistent factor

and the source location is an initial but transient factor incluencing the oscillatory attenuation process. It is pointed out that the potential distribution in the composite soil structure is the mutual influence of vertical and hori zontal charge accumulation effect

the equivalent distance at its oblique direction is the result of the mutual effect of them. The soil layer thickness and comprehensive reflectivity influence the attenuation speed in the form of distance function and equivalent charge. Finally

based on the geological survey and seasonal variation data of an HVDC projects’s grounding electrode site

a complex soil structure is constructed. Considering three major influencing factors-electrode location

soil layer thicknes

andd soil resistivity

a simulation analysis is conducted on the distribution of ground potential and electric field within 5-25 km range from the electrode site on grounding-electrode site.

关键词

Keywords

references

梁旭明,张平,常勇.高压直流输电技术现状及发展前景[J].电网技术,2012,36(4):1-9.

LIANG Xuming,ZHANG Ping,CHANG Yong. Recent advances in high-voltage direct-current power transmission and its developing potential[J]. Power System Technology,2012,36(4):1-9.

张波,何金良,曾嵘.电力系统接地技术现状及展望[J].高电压技术,2015,41(8):2569-2582.

ZHANG Bo,HE Jinliang,ZENG Rong. State of art and prospect of grounding technology in power system[J]. High Voltage Engineering,2015,41(8):2569-2582.

WANG X, RUAN L, WEN X, et al. Characteristics analysis of DCbias currents considering deep-earth resistivity[J]. High Voltage Engineering, 2015, 41(5): 1536-1543.

LI Wei, PAN Zhuohong, LU Hailiang, et al. Influence of deep earth resistivity on HVDC ground-return currents distribution[J]. IEEE Transactions on Power Delivery, 2017, 32(4): 1844-1851.

阮羚,全江涛,杨小库,等.深层大地电阻率对交流电网直流电流分布的影响[J].高电压技术,2014,40(11):3528-3536.

RUAN Ling,QUAN Jiangtao,YANG Xiaoku,et al. Influence of deep earth resistivity on direct current distribution in AC power grid[J]. High Voltage Engineering,2014,40(11):3528-3536.

郭名文,樊艳芳,耿山,等.特高压直流接地极周边断裂结构对地表电位分布的影响研究[J].电力系统保护与控制,2019, 47(2):73-79.

GUO Mingwen,FAN Yanfang,GENG Shan,et al. Study on the effect of fracture structure adjacent to ground electrodes of UHVDC power transmission lines on earth surface potential distribution[J]. Power System Protection and Control,2019,47(2):73-79.

刘连光,马成廉.基于有限元方法的直流输电接地极多层土壤地电位分布计算[J].电力系统保护与控制,2015,43(18):1-5.

LIU Lianguang,MA Chenglian. Calculation of multi-layer soil earth surface potential distribution of HVDC due to finite element method[J]. Power System Protection and Control,2015,43(18):1-5.

耿山,樊艳芳,巩晓玲,等.特高压直流接地极周边地表电位分布计算与敏感性参数研究[J].高压电器,2019,55(3):163-169.

GENG Shan,FAN Yanfang,GONG Xiaoling,et al. Calculation of earth surface potential around UHVDC grounding electrode and analysis on sensitive parameters[J]. High Voltage Apparatus,2019, 55(3):163-169.

ZHANG Bo, ZHAO Jie, ZENG Rong, et al. Numerical analysis of DC current distribution in AC power system near HVDC system[J]. IEEE Transactions on Power Delivery, 2008, 23(2): 960-965.

刘曲.高压直流输电系统单极大地运行时地中电流分布的研究[D].北京:清华大学,2007.

LIU Qu. Research on current distribution during monopolar operation of HVDC systems with grounding return[D]. Beijing:Tsinghua University,2007.

李景丽,栗超超,冯鹏.复杂土壤结构对流入变压器直流电流的影响分析[J].电瓷避雷器,2020(3):34-42.

LI Jingli,LI Chaochao,FENG Peng. Analysis of the influence of complex soil structure on DC current flowing into transformer[J]. Insulators and Surge Arresters,2020(3):34-42.

李景丽,栗超超,冯鹏.异阻层状土壤对HVDC接地极散流性能的影响分析[J].电瓷避雷器,2020(2):1-9.

LI Jingli,LI Chaochao,FENG Peng. Analysis of layered soil resistance effect on HVDC grounding diffuser performance[J]. Insulators and Surge Arresters,2020(2):1-9.

刘曲,李立浧,郑健超.考虑海洋影响的直流输电单极大地运行时变压器中性点直流电流研究[J].电网技术,2007,31 (2):57-60.

LIU Qu,LI Liying,ZHENG Jianchao. Study on DC current through transformer neutrals caused by ground return operation mode of HVDC system with sea influence considered[J]. Power System Technology,2007,31(2):57-60.

何俊佳,叶会生,林福昌,等. HVDC单极大地运行时土壤结构对地电位和地中电流分布的影响[J].南方电网技术,2007,1(1):26-31.

HE Junjia,YE Huisheng,LIN Fuchang,et al. Influence of soil structure on surface potential and ground currents distribution while HVDC mono-polar operation with ground return[J]. Southern Power System Technology,2007,1(1):26-31.

苑舜,王天施.电力变压器直流偏磁研究综述[J].高压电器,2010,46(3):83-87.

YUAN Shun,WANG Tianshi. Summary of the research on transformer DC magnetic bias[J]. High Voltage Apparatus,2010,46 (3):83-87.

吴超,吴广宁,范建斌,等.高压互联电网极址土层参数对直流地表电位影响的研究[J].高压电器,2011,47(3):41-46.

WU Chao,WU Guangning,FAN Jianbin,et al. Influences of grounding site soil parameters on earth surface potential of the high-voltage interconnected power grid[J]. High Voltage Apparatus,2011,47(3):41-46.

曹晓斌,胡劲松,余波,等.一类垂直双层土壤中地网接地电阻的简易计算公式[J].中国电机工程学报,2009,29(1):120-126.

CAO Xiaobin,HU Jinsong,YU Bo,et al. A simplified formula for grounding grids resistance in a type of vertical two-layer soil[J].Proceedings of the CSEE,2009,29(1):120-126.

VILLAS J E T, PORTELA C M. Calculation of electric field and potential distributions into soil and air media for a ground electrode of a HVDC system[J]. IEEE Transactions on Power Delivery, 2003, 18(3): 867-873.

魏敏敏,曹保江,任志超,等.地形结构及参数对特高压直流地电流散流特性的影响分析[J].高电压技术,2012,38(2):414-420.

WEI Minmin,CAO Baojiang,REN Zhichao,et al. Influence of terrain structure and parameter on the divergence character of UHVDC grounding current[J]. High Voltage Engineering,2012,38 (2):414-420.

任志超.直流系统接地极电流场的分布特性及其对交流电网影响的研究[D].成都:西南交通大学,2012.

REN Zhichao. Distribution characteristic of DC system grounding electrode current field and its effect on AC power grid[D]. Chengdu:Southwest Jiaotong University,2012.

FALEIRO E, ASENSIO G, DENCHE G, et al. Electric behavior of conductor systems embedded in finite inhomogeneous volumes scatted into a multilayered soil: The problem of High-Resistivity Ratios revisited[J]. Electric Power Systems Research, 2017, 148(2): 183-191.

西南电力设计院有限公司.±800 kV特高压直流输电工程雅中换流站接地极岩土工程勘察报告[R].成都:西南电力设计院有限公司,2018.

Southwest Electric Power Design Institute Co.,Ltd..Geotechnical investigation report of ±800 kV HVDC grounding electrode in Yazhong converter substation[R]. Chengdu:Southwest Electric Power Design Institute Co.,Ltd.,2018.

催明德,刘连光,孙中明,等.高压直流输电环形电极埋深特性分析[J].高电压技术,2007,33(1):156-159.

CUI Mingde,LIU Lianguang,SUN Zhongming,et al. Analysis of the burial depths of the annular electrodes in HVDC system[J]. High Voltage Engineering,2007,33(1):156-159.

交流电气装置的接地设计规范:GB 50065—2011[S].北京:中国计划出版社,2011.

Code for design of AC electrical installations earthing:GB 50065—2011[S]. Beijing:China Planing Press,2011.

刘连光,崔明德,孙中明,等.±800 kV直流接地极对交流电网的影响范围[J].高电压技术,2009,35(6):1243-1247.

LIU Lianguang,CUI Mingde,SUN Zhongming,et al. Influence scope of AC network by DC grounding electrode rated ±800 kV[J]. High Voltage Engineering,2009,35(6):1243-1247.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

ZHANG Jun

ZHANG Yu

Related Institution

Ganzi Power Supply Company, State Grid Sichuan Electric Power Corporation

Sichuan Electric Power Research Institution, State Grid Sichuan Electric Power Corporation

⁰