一个半断路器接线方式下并联运行电流互感器二次和电流误差分析

Error analysis of resultant secondary current of two paralleled current transformers under breaker-and-a-half scheme

研究分析一个半断路器接线方式下并联运行电流互感器二次和电流误差的产生机理,推导电流互感器二次和电流的误差计算公式。在分析和电流误差特性的基础上,采取有效的技术措施,减小和电流误差,提高测量准确度,具有一定的指导意义。

Under breaker-and-a-half scheme, the generation mechanism upon the errors of resultant secondary current of two paralleled current transformers is analyzed,theoretical derivation of error calculation formula is given as well. Based on the error characteristics of resultant secondary current, available techniques are adopted to reduce error and improve the measurement accuracy, which is of certain guiding significance.