电磁干扰对配电交流采集的影响以及消除电磁干扰影响的方法

The Impact of EMC on Distribution AC Acquisition and Methods for Eliminating the Impact of EMC

配电网点多面广,配电终端运行环境恶劣,极易受到10 kV线路以及现场复杂运行环境的电磁干扰。在电磁干扰环境下,干扰信号通过柱上断路器/环网箱传输到配电终端的电压传感器和电流传感器,影响配电设备透明化运行。硬件方法消除电磁干扰措施有限,尤其是难以消除振荡波干扰,且硬件滤波可能滤除有效的暂态信号。基于以上问题,提出软件滤除电磁干扰信号的方法,解决了硬件方法难以消除振荡波电磁干扰的问题,具有可靠性、准确性和实用性,保障了配电网正常运行。

The distribution network is diverse and the operating environment of the distribution terminal is harsh,making it highly susceptible to electromagnetic interference from 10 kV lines and complex on-site operating environments.In electromagnetic interference environments,interference signals are transmitted to the voltage and current sensors of the distribution terminal,which affects the transparent operation of the distribution equipment.Hardware methods for eliminating electromagnetic interference are limited,especially in terms of difficulty in eliminating oscillatory interference,And hardware filtering may filter out effective transient signals.Based on the above issues,a software filtering method for electromagnetic interference signals is proposed,which solves the problem of hardware methods being difficult to eliminate electromagnetic interference caused by oscillating waves.It has reliability,accuracy,and practicality,ensuring the normal operation of the distribution network.