智能脱扣器高精度电流测量的设计

Design of Intelligent Release's High Accuracy Current Measurement

智能脱扣器的电流测量采用的是基于茹可夫斯基(Rogowski)线圈的电流互感器。介绍了Rogowski线圈的工作原理和信号变换电路的设计,给出了ADC采样的中断流程图和采样数据的修正方法,提高了脱扣器的电流测量精度和保护动作控制功能的准确性,满足了用户对高性能智能脱扣器的要求。

Intelligent release＇s current measurement adopted current transformer based on Rogowski coils. Working principle and design of signal changing circuit was introduced, interrupting flow chart and modified method for sampling given and release＇s current measurement accuracy and cor- rectness of protection action control function raised. The design meets users＇ requirements of high performance intelligent release.