数字化变电站中保护装置与电子式互感器的接口方式

简要介绍了常规变电站中电磁式互感器绕组排列、常规微机保护的可靠性设计等。提出了在数字化变电站保护装置中的独立启动元件如何考虑电子式互感器内部故障、保护装置与电子式互感器的接口等问题，以及几种保护装置与电子式互感器之间的接口方案，并对方案进行了比较。

Interface Between Electronic Instrument Transformer and Protection Equipment in Digital Substation

This paper introduces the coil arrangement of electronic instrument transformer and the reliability of protection equipment in traditional substation. Some questions about the pickup unit in condition of the internal fault of electronic instrument transformer and the interface between electronic instrument transformer and protection equipment are presented. Several interface schemes are proposed and compared.