电流互感器末屏损耗测试稳定性分析与研究

Stability Analysis and Study on Bottom Shielding Loss Test of Current Transformer

本文通过对电流互感器末屏对地损耗因数tanδ测量的研究,分析了油纸绝缘电流互感器不同结构特点对末屏对地损耗的影响,总结了不同结构形式的电流互感器末屏对地损耗因数测量对故障诊断的意义。指出末屏损耗测量对诊断设备受潮有直接的参考意义,但应结合不同结构的电流互感器的特点,采用不同的判别标准,方能准确预警设备受潮的部位和采取相应的消除措施。

In this paper, the influence of different structure features of oil-paper insulation current transformer on the loss of bottom shielding loss to earth is analyzed, the significance of bottom shielding loss factor measurement （ to earth ） of different types of current transformers to the fault diagnosis is summarized. It is pointed out that bottom shielding loss measurement has direct reference significance to diagnose the equipment damp, but different criteria shall be adopted based on the characteristic of current transformer with different structures and the damp position of the equipment can be predicated and corresponding elimination measures be adopted.