应用于智能变电站的电子式互感器选型分析

应用于智能变电站的电子式互感器分为3类：纯光互感器、有源电子式互感器和弱模小信号互感器。作为过程层的关键设备，电子式互感器如何选型是智能变电站建设所面临的实际问题。根据电子式互感器生产厂家的自述，以及已投运的智能变电站的调查，分析和总结电子式互感器的应用现状。从实现原理、可靠性和经济性等方面，对不同类型的电子式互感器进行比较和分析，提出了具有参考价值的选型理念。

Analysis on the Electronic Measurement Transformer Selection for Application in Intelligent Substation

There are three kinds of the electronic measurement transformer that apply in intelligent substation： optoelectronic transformer~active electronic current transformer and weak-mode small-signal transformer. As the key equipment of digitized substation process layer, how to select the electronic transformer is the practical problem confronted in intelligent substation construction. Through the introduction of the electronic transformers manufacturers, and the investigation of the digital substation in operation, the application situation of the electric transformer are analyzed and summarized. It also compares and analyzes these transformers from many aspects such as implementation principle, reliability and economy. At last the valuable idea for reference on selection is presented.