三电极法测量体积电阻率的误差分析与修正
|
摘要
为对三电极法测量体积电阻率的相对误差进行分析与修正,首先在有限元分析软件COMSOL中建立了三电极测量系统模型并进行体积电阻率的仿真计算,对比理论值验证了模型的合理性。然后在仿真基础上重点探究三电极模型中尺寸和材料等内部参数对体积电阻率测量相对误差的影响规律。结果表明:在三电极法测量模型中,试品本身和支撑材料的电阻率水平与高低压电极厚度对低电阻率试品的测量误差影响不明显,对高电阻率试品则较为显著,误差随试品电阻率的升高而下降;试品半径大于三电极测量装置屏蔽电极外径时,对误差几乎无影响;随着试品厚度增加,误差由指数下降逐渐变为线性下降。最后,通过数据拟合提出了针对上述影响因素的体积电阻率测量相对误差修正公式,该修正公式能够将误差从百分级降至千分级。
In order to analyze and correct the relative error of volume resistivity measured by three-electrode method, a model of three-electrode measuring system was built in the finite element analysis software COMSOL Multiphysics to simulate and calculate the volume resistivity, and then the rationality of the model was verified by comparing the calculation results with theoretical values. The influence rule of internal factors such as the size and material of three-electrode model on the measuring relative error of volume resistivity was studied mainly based on the simulation. The results show that in the three-electrode measuring system model, the volume resistivity of the specimen and support material and the thickness of high or low voltage electrode have little influence on the measuring relative error of specimen with low volume resistivity, and have significant effects on the measuring relative error of specimen with high volume resistivity, and the relative error decreases with the increase of the resistivity of specimen.The radius of specimen has little influence on the the error when it is larger than the external radius of shield electrode in the three-electrode measuring equipment. With the increase of the thickness of specimen, the relative error decreases exponentially at first and then decreases linearly. At last, a modifier formula of measuring relative error of volume resistivity was presented via data fitting, which can reduce the relative error from percentage to millesimal.
In order to analyze and correct the relative error of volume resistivity measured by three-electrode method, a model of three-electrode measuring system was built in the finite element analysis software COMSOL Multiphysics to simulate and calculate the volume resistivity, and then the rationality of the model was verified by comparing the calculation results with theoretical values. The influence rule of internal factors such as the size and material of three-electrode model on the measuring relative error of volume resistivity was studied mainly based on the simulation. The results show that in the three-electrode measuring system model, the volume resistivity of the specimen and support material and the thickness of high or low voltage electrode have little influence on the measuring relative error of specimen with low volume resistivity, and have significant effects on the measuring relative error of specimen with high volume resistivity, and the relative error decreases with the increase of the resistivity of specimen.The radius of specimen has little influence on the the error when it is larger than the external radius of shield electrode in the three-electrode measuring equipment. With the increase of the thickness of specimen, the relative error decreases exponentially at first and then decreases linearly. At last, a modifier formula of measuring relative error of volume resistivity was presented via data fitting, which can reduce the relative error from percentage to millesimal.
引文
[1]刘其昶.电气绝缘结构设计原理-中册-绝缘结构总论[M].北京:机械工业出版社,1988:137.
[2]邱成军,王元化,王义杰.材料物理性能[M].哈尔滨:哈尔滨工业大学出版社,2003:47-116.
[3]汪灵,罗柯,李自强,等.矿物及固体绝缘材料电阻率测量的小型电极实验装置与应用[J].中国科学:技术科学,2011,41(7):890-895.
[4]张志浩,施永明,王俊,等.一种高温下测量薄膜电阻温度特性的方法[J].科学技术与工程,2014,14(21):234-238.
[5]李娜,曹晓珑.绝缘材料在低温下的电阻特性测试[J].绝缘材料,2003,36(1):39-42.
[6]LIANG Ying,CHEN Yixin,LIU Yunpeng.The development of the three-electrode testing system for the volume resistivity of composite insulation materials[C]//Asia-Pacific Power and Energy Engineering Conference.Shanghai,China:IEEE,2012.
[7]薛祥立,崔乃斌.三电极法测粉体的电阻率[J].青岛建筑工程学院学报,1988(1):75-78.
[8]Agencies of the U.S.Department of Defense.Standard test methods for DC resistance or conductance of insulation materials:ASTM-D257-2014[S].West Conshohocken:ASTM International,2014.
[9]British Standards Institution.Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials:IEC-60093-1980[S].London:British Standards Institution,1982.
[10]中华人民共和国国家质量监督检验检疫总局.固体绝缘材料体积电阻率和表面电阻率试验方法:GB/T 1410-2006[S].北京:中国标准出版社,2008.
[11]梁英,陈逸昕,刘云鹏.运行复合绝缘子材料的体积电阻率-温度特性研究[J].电工技术学报,2014,29(10):312-317.
[12]陈逸昕.人工电晕老化条件下复合绝缘子材料体积电阻率特性研究[D].保定:华北电力大学,2014.
[13]LISOWSKI M,SKOPEC A.Effective area of thin guarded electrode in determining of permittivity and volume resistivity[J].IEEE Transactions on Dielectrics and Electrical Insulation,2009,16(1):24-31.
[14]LISOWSKI M.Minimization of the effect of dielectric specimen electrization on the results of measurement of volume resistivity[J].Metrology and Measurement Systems,2009,16(3):403-413.
[15]LISOWSKI M,KACPRZYK R.Changes proposed for the IEC 60093 standard concerning measurements of the volume and surface resistivities of electrical insulating materials[J].IEEE Transactions on Dielectrics and Electrical Insulation,2006,13(1):139-145.
[2]邱成军,王元化,王义杰.材料物理性能[M].哈尔滨:哈尔滨工业大学出版社,2003:47-116.
[3]汪灵,罗柯,李自强,等.矿物及固体绝缘材料电阻率测量的小型电极实验装置与应用[J].中国科学:技术科学,2011,41(7):890-895.
[4]张志浩,施永明,王俊,等.一种高温下测量薄膜电阻温度特性的方法[J].科学技术与工程,2014,14(21):234-238.
[5]李娜,曹晓珑.绝缘材料在低温下的电阻特性测试[J].绝缘材料,2003,36(1):39-42.
[6]LIANG Ying,CHEN Yixin,LIU Yunpeng.The development of the three-electrode testing system for the volume resistivity of composite insulation materials[C]//Asia-Pacific Power and Energy Engineering Conference.Shanghai,China:IEEE,2012.
[7]薛祥立,崔乃斌.三电极法测粉体的电阻率[J].青岛建筑工程学院学报,1988(1):75-78.
[8]Agencies of the U.S.Department of Defense.Standard test methods for DC resistance or conductance of insulation materials:ASTM-D257-2014[S].West Conshohocken:ASTM International,2014.
[9]British Standards Institution.Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials:IEC-60093-1980[S].London:British Standards Institution,1982.
[10]中华人民共和国国家质量监督检验检疫总局.固体绝缘材料体积电阻率和表面电阻率试验方法:GB/T 1410-2006[S].北京:中国标准出版社,2008.
[11]梁英,陈逸昕,刘云鹏.运行复合绝缘子材料的体积电阻率-温度特性研究[J].电工技术学报,2014,29(10):312-317.
[12]陈逸昕.人工电晕老化条件下复合绝缘子材料体积电阻率特性研究[D].保定:华北电力大学,2014.
[13]LISOWSKI M,SKOPEC A.Effective area of thin guarded electrode in determining of permittivity and volume resistivity[J].IEEE Transactions on Dielectrics and Electrical Insulation,2009,16(1):24-31.
[14]LISOWSKI M.Minimization of the effect of dielectric specimen electrization on the results of measurement of volume resistivity[J].Metrology and Measurement Systems,2009,16(3):403-413.
[15]LISOWSKI M,KACPRZYK R.Changes proposed for the IEC 60093 standard concerning measurements of the volume and surface resistivities of electrical insulating materials[J].IEEE Transactions on Dielectrics and Electrical Insulation,2006,13(1):139-145.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |