TP级保护用电流互感器的暂态特性分析

Analysis of Transient Characteristics of TP Class Protective Current Transformer

以与IEC有关的电流互感器技术报告为基础,介绍TP级保护用电流互感器C—O和C—O—C—O工作循环暂态面积系数的计算方法。该方法基于准确限值规定时间下的最不利故障初始角计算,有别于传统的按短路电流全偏移计算。

Based on the IEC related current transformer technology report,the calculation method of transient dimensioning factor for C—O and C—O—C—O working cycles of TP class protective current transformer is introduced.This method is based on calculation of the most unfavorable initial angle of the fault at the specified time under accuracy limit,which is different from the traditional calculation method by the full offset of the short-circuit current.