雷灾防御中基于多种土壤电阻率测量方法的土壤结构反演研究
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摘要
为研究雷灾防御工程中的重要参数——多层土壤结构分层参数,在两个已知土壤结构的试验场,分别采用Wenner四极法和非等距四极法、对称非等距四极法测量试验场的土壤电阻率,利用CDEGS软件反演土壤结构模型,发现对于非均匀多层土壤,利用非等距四极法和对称非等距四极法的测试数据反演的土壤结构分层结果比使用Wenner法的结果更精确,与地勘结果具有良好的对应关系,且对称非等距四极法更优于非等距四极法。
In order to study the layering parameters of multi-layer soil structure which was an important parameter in lightning disaster prevention,this paper used two sites with uniform and inhomogeneous soil structures.The Wenner quadrupole method and the non-equidistant quadrupole method and the symmetrical non-equidistant quadrupole method were used respectively for soil resistivity measurement,and then CDEGS software package was used to invert the multi-layer soil structure model. The results showed that in inhomogeneous soils,there was a good correlation between soil structure stratification and geological survey data retrieved using non-equidistant quadrupole method and symmetric non-equidistant quadrupole method. But,the symmetrical non-equidistant quadrupole method was better than non-equidistant quadrupole method at the inversion of soil structure stratification.
In order to study the layering parameters of multi-layer soil structure which was an important parameter in lightning disaster prevention,this paper used two sites with uniform and inhomogeneous soil structures.The Wenner quadrupole method and the non-equidistant quadrupole method and the symmetrical non-equidistant quadrupole method were used respectively for soil resistivity measurement,and then CDEGS software package was used to invert the multi-layer soil structure model. The results showed that in inhomogeneous soils,there was a good correlation between soil structure stratification and geological survey data retrieved using non-equidistant quadrupole method and symmetric non-equidistant quadrupole method. But,the symmetrical non-equidistant quadrupole method was better than non-equidistant quadrupole method at the inversion of soil structure stratification.
引文
[1]孙为民.非均匀土壤中发变电站接地系统优化设计研究[D].北京:清华大学,2001.
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[3]潘溪渊,曾嵘,何金良,等.变电站站址土壤结构分析[J].清华大学学报(自然科学版),2002,42(3):288-290.
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[5]王洪亮.高压直流输电单极大地回线方式运行时接地极电流的研究[D].成都:西南交通大学,2007.
[6]何为,张瑞强,杨帆,等.变电站内水平多层土壤参数反演[J].中国电机工程学报,2014,34(33):5964-5973.
[7]王小凤. CDEGS软件在电力系统的应用[D].杭州:浙江大学,2007.
[8] GB/T 17949. 1-2000接地系统的土壤电阻率、接地阻抗和地面电位测量导则(第1部分):常规测量[S].北京:中国计划出版社,2001.
[9] IEEE. Guide for safety in ac substation grounding[Z]. IEEE Std80-2013,2013.
[10]何金良,曾嵘.电力系统接地技术[M].北京:科学出版社,2007.
[2] Calixto W P,Neto L W,WU M. Parameters estimation of a horizontal multilayer soil using genetic algorithm[J]. IEEE Transactions on Power Delivery,2010,25(3):1250-1257.
[3]潘溪渊,曾嵘,何金良,等.变电站站址土壤结构分析[J].清华大学学报(自然科学版),2002,42(3):288-290.
[4] LEE J P,JI P S,LIM J Y,et al. Earth parameter and equivalent resistivity estimation using ANN[P]. Power Engineering Society General Meeting,IEEE,2005.
[5]王洪亮.高压直流输电单极大地回线方式运行时接地极电流的研究[D].成都:西南交通大学,2007.
[6]何为,张瑞强,杨帆,等.变电站内水平多层土壤参数反演[J].中国电机工程学报,2014,34(33):5964-5973.
[7]王小凤. CDEGS软件在电力系统的应用[D].杭州:浙江大学,2007.
[8] GB/T 17949. 1-2000接地系统的土壤电阻率、接地阻抗和地面电位测量导则(第1部分):常规测量[S].北京:中国计划出版社,2001.
[9] IEEE. Guide for safety in ac substation grounding[Z]. IEEE Std80-2013,2013.
[10]何金良,曾嵘.电力系统接地技术[M].北京:科学出版社,2007.