Abstract: Electromagnetic compatibility (EMC) of electronic control system means the electronic system still has the normal working ability in the electromagnetic environment, and will not become a source of electromagnetic pollution in the environment. Generally use the "immunity" to measure anti-interference ability of the electronic control system in the electromagnetic environment; use the "emission" to show its electromagnetic pollution for the environment. A control system in industrial process is facing all kinds of electromagnetic interference (EMI), we cannot and should not the anti-interference function entirely by the control system of itself to undertake, it must to in the engineering implementation is taken various measures to ensure the normal operation of the control system in the industrial environment. This paper reviews several issues related to electromagnetic compatibility in the design of control room: 1) Technical specification for equipment selection ; 2) Voltage between neutral and ground for AC low voltage power supply system; 3) Electrostatic protection in control room; 4) Electromagnetic compatibility of lighting lamps; 5) Electromagnetic compatibility of the relay in the cabinet; 6) Electromagnetic compatibility of cable system in control room.

摘要： 电子式控制系统的电磁兼容系指在可能的电磁环境中，电子系统仍然具有正常的工作能力且不会成为环境中的一个电磁污染源。一般用“抗扰度”来衡量电子式控制系统在电磁环境下的抗干扰能力；用“发射”来表明其对环境的电磁污染。一个应用于工业过程的控制系统面临着各种各样的电磁干扰，我们不可能、也不应该将抑制干扰的功能完全由控制系统本体去承担，这就必须在控制工程的实施过程中采取各种措施去保证控制系统在工业电磁环境中的正常运行。本文论述在控制室设计中与电磁兼容相关的几个问题，内容包括： 1）关于设备选型的技术规格书； 2）交流低压供电系统的零地电压； 3）控制室的静电防护； 4）照明灯具的电磁兼容； 5）机柜内部继电器的电磁兼容； 6) 控制室内电缆系统的电磁兼容。

关键词: 控制室, 电磁兼容, 电磁干扰, 抗扰度, 发射, control room, electromagnetic compatibility, electromagnetic interference, immunity, emission