全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

土壤温度特性试验及其对圆环型直流接地极发热影响分析

, PP. 188-195

Keywords: 土壤热参数,温度特性,电热耦合,圆环型接地极,接地极温升

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了更全面的分析直流输电接地极的发热过程,优化接地极设计,针对2种不同质地的土壤样品进行了温升模拟试验研究,建立了土壤含水量、热参数以及土壤电阻率的温度特性。同时,结合试验结果,采用有限元方法,建立了电热动态耦合模型,仿真分析了单圆环、双圆环型接地极在直流输电系统长时间单极运行时的温升情况,与传统模型中未考虑土壤温升效应的仿真结果进行了对比。试验及仿真结果表明:土壤参数会随温度而变化,从而进一步影响接地极的发热升温,而温升过高可能导致接地极不能正常工作。因此,结合土壤温度特性对接地极进行设计,能更大程度的保证接地系统的安全运行。

References

[1]  曹晓斌,吴广宁,付龙海,等. 直流密度对土壤电阻率的影响[J]. 中国电机工程学报, 2008,28(6):37-42. Cao Xiaobin,Wu Guangning,Fu Longhai,et al.The impact of DC current density on soil resistivity[J].Proceedings of the CSEE,2008,28(6)
[2]  李良福. 土壤电学[M]. 北京:气象出版社, 2008:91-93. Li Liangfu.Soil Electric[M].Beijing:ChinaMeteorological Press,2008
[3]  解文艳,樊贵盛. 土壤质地对土壤入渗能力的影响[J]. 太原理工大学学报, 2004,35(5):537-540. Xie Wenyan,Fan Guisheng.Influence of soil structure on infiltration characteristics in field soils[J].Journal of Taiyuan University of Technology,2004,35(5)
[4]  何金良,曾嵘. 电力系统接地技术[M]. 北京:科学出版社, 2007:327-328. He Jinliang,Zeng Rong.Power system grounding technology[M].Beijing:SciencePublishing House,2007
[5]  Zienkiewicz O C,Emson C,Bettess P. A novel boundary infinite element[j]. International Journal for Numerical Methods in Engineering, 1983,19(3):393-404.
[6]  中华人民共和国国家发展和改革委员会. DL/T 5224-2005高压直流输电大地返回运行系统设计技术规定[S]. 北京:中国电力出版社, 2009.National Development and Reform Commission.DL/T 5224-2005Technical rule of the design of HVDC earth return operation system[S].Beijing:ChinaElectric Power Press,2009.
[7]  陈凡,何金良,张波,等. 共用接地极对云广与贵广II回直流系统的影响[J]. 高电压技术, 2009,35(4):743-748. Chen Fan,He Jinliang,Zhang Bo,et al.Influence of common grounding electrode on yunnan-guangdong DC transmission project and Guizhou-Guangdong II DC transmission project[J].High Voltage Engineering,2009,35(4)
[8]  郭剑,陆家榆. 直流接地极结合均流系统的计算模型与求解[J]. 中国电机工程学报, 2008,28(19):1-6. Guo Jian,Lu Jiayu.Calculation model and solving method of HVDC grounding electrode with average-current system[J].Proceedings of the CSEE,2008,28(19)
[9]  赵杰,何金良. 特高压和高压直流输电系统共用接地极模式分析[J]. 中国电力, 2007,40(10):45-47. Zhao Jie,He Jinliang.Analysis on the common grounding electrode mode for UHVDC and HVDC power transmission systems[J].Electrical Power,2007,40(10)
[10]  李毅,邵明安,王文焰,等. 质地对土壤热性质的影响研究[J]. 农业工程学报, 2003,19(4):62-65. Li Yi,Shao Ming?an,Wang Wenyan,et al.Influence of soil textures on the thermal properties[J].Transactions of the CSAE,2003,19(4)
[11]  李婷,王全九,樊军. 土壤热参数确定方法比较与修正[J]. 农业工程学报, 2008,24(3):59-64. Li Ting,Wang Quanjiu,Fan Jun.Modification and comparison of methods for determining soil thermal parameters[J].Transactions of the CSAE,2008,24(3)
[12]  Stanko M,Tomislav K,Ozren B. Measurement of soil thermal properties by spherical probe[J]. IEEE Trans. on Instrumentation and Measurement, 2005,54(3):1219-1226.
[13]  曹晓斌,吴广宁,付龙海,等. 温度对土壤电阻率影响的研究[J]. 电工技术学报, 2007,22(9):1-6.. Cao Xiaobin,Wu Guangning,Fu Longhai,et al.Study of temperature impact on soil resistivity[J].Transactions of China Electrotechnical Society,2007,22(9)
[14]  韩立华,刘松玉,杜延军. 温度对污染土壤电阻率影响的试验研究[J]. 岩土力学, 2007,28(6):1151-1155. Han Lihua,Liu Songyu,Du yanjun.Experiment study on effect of temperature on electrical resistivity of contaminated soils[J].Rock and Soil Mechanics,2007,28(6)
[15]  Greiss H,Mukhedkar D,Lagace P J. Transient analysis of heat dissipation due to a HVDC ground electrode[J]. IEEE Trans. on Power Delivery, 1989(2):916-920.
[16]  Chen Fan,Zhang Bo,He Jinliang. Influence of coke bed on HVDC grounding electrode heat dissipation[J]. IEEE Trans. on Magnetics, 2008,44(6):826-829.
[17]  陈凡,何金良,张波,等. 特高压共用接地极热参数分析[J]. 高电压技术, 2009,35(6):1267-1273. Chen Fan,He Jinliang,Zhang Bo,et al.UHVDC common ground electrode thermal parameters analysis[J].High Voltage Engineering,2009,35(6)
[18]  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, 2007,27(36):8-13. Liu Qu,Li Licheng,Zheng Jianchao.DC currents distribution in HVDC systems of monopolar operation With ground return in complex soil structure[J].Proceedings of the CSEE,2007,27(36)
[19]  张波,赵杰,曾嵘,等. 直流大地运行时交流系统直流电流分布的预测方法[J]. 中国电机工程学报, 2006,26(13):84-88. Zhang Bo,Zhao Jie,Zeng Rong,et al.Estimation of DC current distribution in AC power system caused by HVDC transmission system in ground return status[J].Proceedings of the CSEE,2006,26(13)
[20]  司马文霞,雷超平,袁涛,等. 改善冲击散流时地中电场分布的接地降阻试验[J]. 高电压技术, 2011,37(9):2294-2301. Sima Wenxia,Lei Chaoping,Yuan Tao,et al.Experimental study on grounding resistance reduction based on improved grounding electric field distribution induced by the diffuser of impulse current[J].High Voltage Engineering,2011,37(9)
[21]  袁涛,司马文霞,李晓莉. 两种常见接地极电流分布的探讨[J]. 高电压技术, 2008,34(2):239-242. Yuan Tao,Sima Wenxia,Li Xiaoli.Current distribution of two kinds grounding electrode[J].High Voltage Engineering,2008,34(2)
[22]  王静爱,左伟. 中国地理图集[M]. 北京:中国地图出版社, 2010:46. Wang Jingai,Zuo Wei.China's geographic atlas[M]. Beijing:SinoMapsPress,2010
[23]  中华人民共和国建设部. GB/T 50145-2007土的工程分类标准[S]. 北京:中国计划出版社, 2008.Ministry of Construction, Peoples′s Republic of China.GB/T 50145-2007 Standard for engineering classification of soil[S].Beijing:ChinesePlan Publishing House,2008

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133