| 半岛地质条件下计算高压直流输电地中直流分布的扩展镜像法 |
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| 引用本文： | 李长云,李庆民,李贞,姚金霞,刘民.半岛地质条件下计算高压直流输电地中直流分布的扩展镜像法[J].高电压技术,2011,37(2):444-452. |
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| 作者姓名： | 李长云 李庆民 李贞 姚金霞 刘民 |
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| 作者单位： | 1. 山东大学电气工程学院,济南,250061
2. 山东电力研究院,济南,250002 |
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| 基金项目： | 教育部新世纪优秀人才支持计划(NCET-08-0335); 山东省自然科学杰出青年基金(JQ200916); 国家电网科技基金(5250909)~~ |
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| 摘 要： | 明晰地中直流分布是研究直流偏磁效应及其抑制技术的基础.为此,利用保角变换中的正幂函数变换,将三维空间转化为二维空间,提出扩展镜像法的概念,据此推导出半岛地质环境下地表电位分布的函数表达式.分析表明,半岛地质分层土壤的表层土壤电阻率对地表电位具有显著影响,且海岸线夹角愈小,半岛地表电位梯度愈大;再者,接地极距海岸线越近,...
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| 关 键 词： | 扩展镜像法 半岛地质 土壤模型 海岸线夹角 地中直流 静电比拟 |
Extended Image Method to Determine the Underground DC Current Distribution of HVDC Transmission Systems Under Peninsula Geological Conditions |
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| LI Chang-yun
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LI Qing-rain
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LI Zhen
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YAO Jin-xia
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LIU Min.Extended Image Method to Determine the Underground DC Current Distribution of HVDC Transmission Systems Under Peninsula Geological Conditions[J].High Voltage Engineering,2011,37(2):444-452. |
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| Authors: | LI Chang-yun LI Qing-rain LI Zhen YAO Jin-xia LIU Min |
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| Affiliation: | LI Chang-yun1,LI Qing-min1,LI Zhen1,YAO Jin-xia2,LIU Min2(1.School of Electrical Engineering,Shandong University,Jinan 250061,China,2.Shandong Electric Power Research Institute,Jinan 250002,China) |
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| Abstract: | Using the positive power function transformation,three-dimensional space was turned into two-dimensional space,and the concept of extended image method was put forward.Thereby,mathematical expressions for surface potential calculation under peninsula geological conditions were deduced.Subsequent analyses indicate that,the surface resistivity of the upper layer soil significantly affects the surface potentials,and the surface potential gradient increases as the coastline inclination angle reduces.In addition... |
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| Keywords: | extended image method peninsula geology soil model coastline inclination angle underground DC current electrostatic match |
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