电网变电站中,计算机控制系统往往受到所处的工作环境等因素引起的各种干扰,给计算机系统运行带来一定的危害。分析了电网变电站控制系统干扰产生和传播的本质,提出一些实用的通用性较好的抗干扰措施,并给出一个具有高抗干扰性能的电网变电站控制系统的实际电路供大家借鉴。 In the substations of the power grid, the computer control system is often subjected to various kinds of interference caused by factors such as the working environment in which it is located, which brings about a certain hazard to the operation of the computer system. The essence of the interference generation and propagation in the control system of power substation is analyzed. Some practical anti-interference measures with good generality are put forward, and a practical circuit of substation control system with high anti-interference performance is given for reference.