DSAI133A ABB

Interference from the power supply:Practice has proved that there are many cases of DCS control system failure caused by the interference introduced by the power supply.The normal power supply of the DCS system is powered by the working power supply.Due to its wide coverage,it will be affected by all the space electromagnetic interference and on the line.Induce voltage and current.In particular,the internal changes,the start and stop of large power equipment,and the harmonics caused by AC and DC drives are all transmitted to the primary side of the power supply through the transmission line.

来自电源的干扰：实践证明，因电源引入的干扰造成DCS控制系统故障的情况很多，DCS系统的正常供电电源均由工作电源供电，由于其覆盖范围广，它将受到所有空间电磁干扰而在线路上感应电压和电流。尤其是内部的变化，大型电力设备启停、交直流传动装置引起的谐波等，都通过输电线路传到电源原边。