电子式电流互感器数字校验仪设计

Design of the Calibrator for the Electronic Current Transformer

对电子式电流互感器进行校验,是确保其成功的重要环节。传统的电磁式互感器的校验仪已不能胜任电子式互感器的校验工作。文中介绍了一种新型的数字校验仪,它具有操作方便、便于携带、功能多样、升级灵活等优点。误差处理采用加窗插值DFT算法,大大提高了运算精度,满足了校验仪的精度要求。

The calibrating of electronic current transformers is a major factor for their proper work. However, conventional electromagnetic transformer calibrators are incompetent for the job. This paper introduces a new type of digital calibrator with the advantages of portability, versatility, simple operation, and easy upgrading. and interpolated DFT algorithm is adopted to compute the measurement error, thus greatly improving the precision to meet the accuracy requirements of the calibrator.