一种剩余电流监测系统及控制方法

Residual Current Monitoring System and Control Method

介绍了一种剩余电流监测系统及控制方法。该剩余电流监测系统包括:控制模块、存储模块、采集模块和多个互感器。互感器用于采集相对应供电回路中至少一条供电线缆的回路模拟电流信号并输出至采集模块;采集模块包括多个采集端口,每个采集端口都连接一个互感器,采集模块用于获取供电回路所关联的各互感器输出的回路模拟电流信号,将回路模拟电流信号转换为回路数字电流信号,并发送给控制模块;控制模块用于根据回路数字电流信号生成剩余电流波形,根据剩余电流波形计算供电回路的剩余电流有效值。

This paper introduces a residual current monitoring system and its control method.The residual current monitoring system includes:control module,storage module,acquisition module and multiple transformers;The transformer is used to collect the circuit analog current signal of at least one power supply cable in the corresponding power supply circuit and output it to the acquisition module;The acquisition module includes multiple acquisition ports,and each acquisition port is connected with a transformer.The acquisition module is used to obtain the loop analog current signal output by each transformer associated with the power supply loop,convert the loop analog current signal into the loop digital current signal,and send it to the control module;The control module is used to generate the residual current waveform according to the loop digital current signal,and calculate the effective value of the residual current of the power supply loop according to the residual current waveform.