不同温度与电场下XLPE的电导率测量与建模

Electrical Conductivity Measurement and Modeling of XLPE at Different Temperatures and Electric Fields

在不同温度、场强下对XLPE(交联聚乙烯)进行了电导率测试,实验结果表明电导率与温度、场强密切相关,实验系统可以用于高温、高场强下绝缘材料电导率的测试。根据测试结果研究了XLPE材料电导率理论计算的相关参数,通过测量值与电导率理论计算值进行对比,得到适合反映XLPE电导率与温度、场强关系的理论计算公式,为电缆绝缘材料电导率计算及XLPE交流电缆直流改造的研究与分析提供了实验平台和理论依据。

In this paper,the conductivity of cross-linked polyethylene (XLPE) was measured at different temperatures and electric fields. The experimental results show that the conductivity is closely related to the temperature and electric field strength. The experimental system can be used for the conductivity measurement of the insulating materials at high temperatures and high electric field strength. Related parameters of theoretical calculations for the conductivity of the XLPE are investigated according to the measured results. A theoretical calculation formula that represented the relationship between the XLPE conductivity and the temperature as well as the field was obtained through a comparison of the measured values and the theoretically estimated values,which provides an experimental platform and a theoretical basis for the research and analysis of conductivities of the cable insulation materials.