摘要
本文阐述了全光纤电流互感器(FOCT)的工作原理以及温度对FOCT测量精度的影响以及改善方法。并就220kV用的GIS环圈光纤电流互感器,利用Comsol有限元分析软件分析了其在高低温循环条件下内部传感光纤的温度变化。研究了最基础的状态模型并进行了实验验证,且针对实验验证建立新的衍生模型对仿真进行进一步的结果验证。结果表示在高低温变化过程中传感光纤上的温度与外界温度最大差异能够达到19℃;相同的流速下,不同的流动方向,传感光纤的温度变化有着相当大的差距。
The working principle of FOCT and influence of temperature to FOCT is described, and how to reduce the influence also have a brief description. The temperature change of the internal sensing fiber in 220 kV GIS under high and low temperature cycle is analyzed by Comsol. The basic state model is studied and the experimental verification is carried out, and a new derivative model is established to verify the simulation results. The results show that the maximum temperature difference between the sensing fiber and the outside can reach 19℃ during the high and low temperature cycle change process; At the same flow rate, there is a considerable difference of temperature change by different flow direction.
作者
徐盛果
陈科祥
Xu Sheng-guo;Chen Ke-xiang
出处
《电力系统装备》
2018年第12期232-233,共2页
Electric Power System Equipment
关键词
全光纤电流互感器
有限元分析
温度场
fiber optical current transformer
finite element analysis
temperature distribution
