微小信号测量准确性对电流互感器负荷箱校准结果的影响分析与改进

Analysis and improvement of influence of accuracy of small signal measurement on calibration results of load box of current transformer

测量电流互感器负载箱微小信号时,存在准确性与稳定性较差的问题,严重影响对电流互感器负荷箱测量结果的评估。本文所设计的微小信号采集模块能够有效提高微小信号的采集精度及稳定度,极大减小测量结果的引入误差,更能反映电流互感器负荷箱校准过程的真实性。

when measuring the small signal of the current transformer load box, there is the problem of poor accuracy and stability, which seriously affects the evaluation of the current transformer load box measurement results. Small signal acquisition module is designed in this paper can effectively improve the small signal acquisition accuracy and stability, greatly reducing the measurement error, the authenticity can reflect the current transformer load box calibration process.