全光纤电流互感器温度补偿算法探讨

摘要

与传统电磁式互感器相比,全光纤电流互感器具有测量范围大、精度高、绝缘良好等优点,但其测量精度受温度影响,文章提出了一种基于多项式拟合的补偿算法,对全光纤电流互感器进行温度补偿,并通过实验对补偿方案进行了验证.理论分析和实验结果表明,该算法改善了全光纤电流互感器在全温范围内的温度性能.%Comparison with the traditional electromagnetic current transformer,thefiber optical current transformer (FOCT)has the advantages of wider measurement range,higher accuracy,and better insulating property. However,the measurement accuracy of FOCT is influenced by the temperature.A compensation algorithm based on polynomial fitting is proposed to compensate the temperature for FOCT.And its feasibility is verified through experiment.Analysis and experimental results show that the proposed method improves the performance of FOCT in the whole temperature range.