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新疆大学电气工程学院
Published:2021
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[1]樊艳芳,曾富.新疆哈密特高压直流送端电网地表电位与直流电流分布研究[J].新疆大学学报(自然科学版)(中英文),2021,38(05):616-622.
[1]樊艳芳,曾富.新疆哈密特高压直流送端电网地表电位与直流电流分布研究[J].新疆大学学报(自然科学版)(中英文),2021,38(05):616-622. DOI: 10.13568/j.cnki.651094.651316.2020.10.30.0002.
DOI:10.13568/j.cnki.651094.651316.2020.10.30.0002.
特高压直流输电系统单极-大地回路运行方式下
直流电流通过接地的中性点流入变压器
会使交流电网遭受直流偏磁影响.论文针对直流接地极周围的地表电位分布展开研究
采用镜像法与行波法
建立水平3层和水平4层土壤结构模型
分别计算不同土壤模型下的地表电位和直流偏磁电流分布.在MATLAB中构建新疆哈密特高压直流送端电网仿真模型
讨论不同土壤分层模型对直流偏磁电流分布的影响.结果表明水平2层分层模型与水平3层模型下地表电位分布存在较大差值
水平3层模型与水平4层模型下地表电位分布曲线几乎重合;采用3层模型计算出的直流电流更接近实测值
能够满足工程计算要求.
Under the single-pole-earth loop operation mode of the UHVDC transmission system
the DC current flows into the transformer through the grounded neutral point
which will cause the AC power grid to suffer from DC bias magnetism.The thesis studies the surface potential distribution around the DC grounding electrode
using mirror image method and traveling wave method to establish horizontal three-story and four-story soil structure models
and calculates the surface potential and DC bias current distribution under different soil models. Power grid in Hami area of Xinjiang is constructed in MATLAB
and the influence of different soil layer models on the distribution of DC bias current is discussed. The results show that there is a large difference in the surface potential distribution between the horizontal two-layer model and the horizontal three-layer model. The surface potential distribution curves under the horizontal three-layer model and the horizontal four-layer model almost coincide;the DC current calculated by the three-layer model is closer to the measured value and can meet the engineering calculation requirements.
师泯夏,吴邦,靳宇晖,等.直流偏磁对变压器影响研究综述[J].高压电器,2018,54(7):20-36+43.SHI M X,WU B,JIN Y H,et al.Research summary on the impacts of DC magnetic bias on transformer[J].High Voltage Apparatus,2018,54(7):20-36+43.(in Chinese)
谢志成,钱海,林湘宁,等.直流偏磁下变压器运行状态量化评估方法[J].电力自动化设备,2019,39(2):216-223.XIE Z C,QIAN H,LIN X N,et al.Quantitative state assessment method for transformer under DC bias[J].Electric Power Automation Equipment,2019,39(2):216-223.(in Chinese)
樊艳芳,耿山,巩晓玲,等.基于直流偏磁风险指标的变电站选址[J].电力系统保护与控制,2018,46(19):59-65.FAN Y F,GENG S,GONG X L,et al.Substation site selection considering the risk index of DC bias[J].Power System Protection and Control,2018,46(19):59-65.(in Chinese)
赵小军,晋志明,王刚,等.采用复指数的频域分解算法及其在三相变压器非对称直流偏磁分析中的应用[J].中国电机工程学报,2019,39(4):1206-1215.ZHAO X J,JIN Z M,WANG G,et al.Analysis of three-phase transformer under asymmetrical DC bias by using frequency-domain decomposition based on complex exponential[J].Proceedings of the CSEE,2019,39(4):1206-1215.(in Chinese)
全江涛,谢志成,陈科基,等.特/超高压直流输电系统单极运行下变压器中性点直流电流分布规律仿真分析[J].高电压技术,2015,41(3):787-793.QUAN J T,XIE Z C,CHEN K J,et al.Mechanism analysis and simulation of DC current distribution along transformer neutral point under the condition of UHVDC/HVDC single-pole operation[J].High Voltage Technology,2015,41(3):787-793.(in Chinese)
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.WEU M M,CAO B J,REN Z C,et al.Influence of terrain structure and parameter on the divergence character of UHVDCgrounding current[J].High Voltage Technology,2012,38(2):414-420.(in Chinese)
任志超,续建国,张一坤,等.交直流互联系统直流地表电位简易算式[J].电工技术学报,2011,26(7):256-263.REN Z C,XU J G,ZHANG Y K,et al.Study of the simple formula of DC surface potential in AC-DC interconnected large power system[J].Journal of Electrical Technology,2011,26(7):256-263.(in Chinese)
邓涛,舒群力,杨李栋,等.特高压变压器空载直流偏磁电磁特性计算[J].变压器,2018,55(10):14-18.DENG T,SHU Q L,YANG L D,et al.Calculation of electromagnetic characteristics of no-load DC-bias in UHV transformer[J].2018,55(10):14-18.(in Chinese)
刘曲,李立浧,郑健超.复合土壤模型下HVDC系统单极大地运行时的电流分布[J].中国电机工程学报,2007(36):8-13.LIU Q,LI L C,ZHENG J C.DC currents distribution in HVDC systems of monopolar operation with ground return in complex soil structure[J].Proceedings of the CSEE,2007(36):8-13.(in Chinese)
潘卓洪,张露,刘虎,等.多层水平土壤地表电位分布的仿真分析[J].高电压技术,2012,38(1):116-123.PAN Z H,ZHANG L,LIU H,et al.Simulation and analysis of earth surface potential distribution in horizontal multi-layer soil[J].High Voltage Technology,2012,38(1):116-123.(in Chinese)
任志超,吴广宁,甄威,等.直流入地电流经交流电网分流计算模型的简化及算法分析[J].高电压技术,2011,37(4):1008-1014.REN Z C,WU G N,ZHEN W,et al.Model simplication and calculation method analysis about the shunt of DC grounding current via AC grid[J].High Voltage Technology,2011,37(4):1008-1014.(in Chinese)
潘卓洪,张露,谭波,等.高压直流输电入地电流在交流电网分布的仿真分析[J].电力系统自动化,2011,35(21):110-115.PAN Z H,ZHANG L,TAN B,et al.Simulation and analysis of ground current distribution of HVDC transmission in AC network[J].Power System Automation,2011,35(21):110-115.(in Chinese)
郭剑,邹军,何金良,等.水平分层土壤中点电流源格林函数的递推算法[J].中国电机工程学报,2004(7):105-109.GUO J,ZOU J,HE J L,et al.Recursive method to obtain analytic expressions of green’s function in multi-layer soil by computer[J].Proceedings of the CSEE,2004(7):105-109.(in Chinese)
陈德智,黄振华,刘杰,等.水平分层土壤中点电流源电流场的计算[J].高电压技术,2008(7):1379-1382.CHEN D Z,HUANG Z H,LIU J,et al.Calculation of current field due to a point source in multi-layer soil[J].High Voltage Technology,2008(7):1379-1382.(in Chinese)
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 L G,MA C L.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.(in Chinese)
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