为了提高电流差动保护的精确性，从参考量的采集、传送装置电流互感器入手，通过分析电流互感器的等效电路、饱和电流波形、饱和电流的谐波波形以及单相接地故障时电流互感器二次回路分流，提出可能导致误差的影响因素，并根据电流波形及参数的特征提出相应解决方法和措施。%In order to improve the accuracy of the current differential protection ,we can detect from the current transformer which can collect reference amount and transfer current .By analysis of the equivalent circuit of the current transformer ,the saturation current waveform ,the saturation current of harmonic waveform and current transformer secondary circuit shunt of single - phase ground fault . Proposed impact factors ,may lead to errors and corresponding solutions and measures ,based on the characteristics of the current wave-form and parameter has a certain value .
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