可编程序控制器（PLC）应用抗干扰探讨

Discuss on the anti -interference application of programmable logic controller （PLC）

以PLC为核心控制单元的变电站自动化设备在运行中，通常会遇到哪些干扰源，并提出了解决方法：合理的引入工作电源；科学的安装和布线；采取一些特殊的抗干扰措施；正确的接地处理。

This paper shows the interference sources in operation of substation automation equipment with PLC as core controlling unit and puts forward solutions： the reasonable working power leading;the scientific installation and wiring;the special anti - interference measures ; the correct ground connection.