一种光原理电流互感器不停电精度校准方法的研究与应用

Research and Application of a Calibration Method for Optical Principle Current Transformer Without Power Failure

针对光原理电流互感器运维过程中精度校准的难题,提出了一种光原理电流互感器不停电精度校准方法。该方法利用光原理电流互感器采集卡双套配置时,单套故障不对另1套运行产生影响的特性,建立了利用双套配置的采集卡中未更换的1套作为标准源,对另1套已更换的采集卡进行精度校准的模型。最后,以省内某智能变电站为例,对该模型方法的有效性和可操作性进行了现场实际验证。

Aiming at the problem of precision calibration in the operation and maintenance process of the optical principle current trans-former,a method for calibration of the non-power failure precision of the optical principle current transformer is proposed.The method uses the principle of optical current transformer acquisition card dual configuration.The single-set fault does not affect the operation of another set.By using the not replaced card of the double set configuration in the acquisition card as a standard source,it calibrates an-other set of the acquisition card which has been replaced.Taking a smart substation in the province as an example,the effectiveness and operability of this model method are verified in the actual field.