光电互感器的应用及接口问题

介绍了正在走向实用的光电电流、电压互感器的工作原理，指出了光电互感器与传统互感器输出接口的不同之处。根据所研制的光电互感器和IEC标准，就光电互感器的模拟式、数字式和光学式3种输出形式，提出了测量仪器和微机保护装置与光电互感器接口的一些建议。认为光电互感器通过数字式特别是光学式标准接口与二次测量和保护装置相连，不仅能简化二次测量和保护装置，而且便于组成光纤局域网，提高系统的准确度和可靠性。

STUDY ON STANDARD INTERFACES AMONG OPTICAL ELECTRIC TRANSFORMER,MEASUREMENT AND PROTECTION

This paper describes the principles of optical voltage and current transformers.The differences between the optical electric and the traditional transformers are em phasized.Thereby,the interfaces among the optical electric transform er,the measurement instrument and the com puter protection equipm ent are designed based on the IEC standards.They are divided into three types:analogy,digital and optic.The available interface might not only sim plify the secondary m easurem ent and protection equipment,but also enhance the performance of the system.