电子式互感器在数字化变电站的应用

电子式互感器和合并单元作为数字化变电站的重要组成部分，与传统互感器相比具有绝缘简单、动态范围宽、抗饱和性能强、占地面积小、实现数据输出等优点。文中介绍了有源和无源电子式互感器的构成，对这2种方式进行了比较，介绍了合并单元的功能及其应用，对工程应用提出了互感器配置和功能应用的实施建议。

Application of Electronic Instrument Transformer in Digital Substation

Electronic instrument transformers and merging units are important components of a digital substation. Compared with conventional instrument transformers, electronic instrument transformers have many advantages such as simplified insulation structure, wide dynamic range, excellent transient characteristic, reductions in size and weight, and digital output etc. The structures and characteristics of an active electronic transformer and a passive electronic transformer, and the function and application of a merging unit are introduced. A new opinion of how to dispose electronic transformers and merging units in a digital substation is put forward.