在变电站自动化领域中,数字化越来越为人们所重视。数字智能化电气的发展,特别是智能化开关、光电式互感器等机电一体化设备的出现,使变电所自动化技术即将进入数字化新阶段。介绍了数字化变电站自动化系统的特征、结构及网络选型等关键技术。 In the field of substation automation, more and more people pay attention to digitalization. The development of digital intelligent electrical appliances, especially the emergence of mechatronic devices such as intelligent switches and photoelectric transformers, will bring the substation automation technology to enter a new phase of digitalization. The key technologies of digital substation automation system, such as its characteristics, structure and network selection, are introduced.