PROTECTIVE INFORMATION TRANSMITTING AND RECEIVING DEVICE, PROTECTIVE INFORMATION TRANSMITTING AND RECEIVING METHOD, PROTECTIVE INFORMATION TRANSMITTING AND RECEIVING SYSTEM AND METHOD FOR OPERATING PROTECTIVE INFORMATION TRANSMITTING AND RECEIVING SYSTEM

摘要

The embodiment relates to a grid protection transmission device, a grid protection transmission method, a grid protection transmission system, and a system operation method, by measuring the light output level of the CIU and the instrument and monitoring it in real time, and using the light output level to It relates to a grid protection transmission device, a grid protection transmission method, a grid protection transmission system, and a system operation method that can immediately check whether there is an abnormality in equipment or lines between measuring instruments.