전력감시 제어시스템을 위한 모터보호용 디지탈 보호계전기 개발

A development of digital motor protection relay for power supervisory control system

Recently the major requirements have emerged in industrial substation system field. One is the simple arrangement of main power supply equipment and the other is the introduction of highly computer-controlled system for operation, maintenance and protection. This paper deals with the systems including motor-type relay systems, supervisory and control systems, digital type relay protectiion systems.