温度对交流油纸绝缘套管频域介电谱特性的影响研究

Research on the Influence of Temperature on the Frequency Domain Spectroscopy Characteristics of AC Oil-paper Insulated Bushings

本文针对交流油纸绝缘套管频域介电谱测试,阐述套管频域介电谱测试原理和温度影响机理,选取72.5kV、110kV和220kV油纸电容式套管试品开展温度相关性研究,从微观机理解释了温度对套管频域介电谱特性的影响规律,并提出基于Arrhenius方程的套管介电谱温度校正方法,工程应用效果验证了温度校正方法的有效性和套管绝缘状态评估的准确性。

This paper introduced the test of the frequency domain spectroscopy(FDS) of AC oil-paper insulated bushings, and explained the principle of FDS technology and temperature influence mechanism. 72.5 kV, 110 kV, and 220 kV OIP bushings were chosen as test samples to carry out temperature correlation research, and explained the influence of temperature on the FDS characteristics of the bushings from microscopic mechanism, and proposed temperature correction method based on Arrhenius equation. The field application verified the effectiveness of the method of temperature correction and accuracy of the insulation evaluation of OIP bushings.