绝缘油介质损耗与体积电阻率测试仪空杯电容值的计算  

Calculation of Test Cell Capacitance of Insulating Oils Dielectric Dissipation and Resistivity Tester

作　　者：贾多 吕金华 蔡晋辉 JIA Duo;L Jin-hua;CAI Jin-hui(College of Metrology and Measurement Engineering,China Jiliang University,Hangzhou,Zhejiang 310018,China;Inner Mongolia Institute of Metrology Testing and Research,Hohhot,Inner Mongolia 010050,China;Inner Mongolia Administration For Market Regulation,Hohhot,Inner Mongolia 010010,China)

机构地区：[1]中国计量大学计量测试工程学院,浙江杭州310018 [2]内蒙古自治区计量测试研究院,内蒙古呼和浩特010050 [3]内蒙古自治区市场监督管理局,内蒙古呼和浩特010010

出　　处：《计量学报》2023年第2期246-251,共6页Acta Metrologica Sinica

基　　金：国家市场监督管理总局科技计划项目(2021MK026)。

摘　　要：绝缘油介质损耗与体积电阻率测试仪的试验油杯是仪器的重要组成部分,以空气为介质的油杯电容值影响仪器的测量准确度和校准结果。为了得到准确的油杯电容值,依据油杯几何结构,采用圆锥体电容与圆柱体电容并联分布的物理模型,推导获得理论计算公式,并进行建模仿真比较。结果表明,所述理论计算方法有较高准确度,可用于指导测试仪的设计和校准工作。The test cell is an important part of the insulating oils dielectric dissipation and resistivity tester.The capacitance of test cell with air as the medium affects the measurement accuracy and calibration results of the instrument.In order to obtain the accurate capacitance value of the test cell,according to the geometric structure,the physical model of the parallel distribution of the cone capacitance and the cylinder capacitance is used to derive the theoretical calculation formula,and the modeling and simulation are compared.The results show that the theoretical calculation method has high accuracy and can be used to guide the design and calibration of the tester.

关 键 词：计量学 绝缘油测试仪 体积电阻率 介质损耗因数 空杯电容值 校准 

分 类 号：TB971[一般工业技术—计量学]