Research on Constitution Scheme of Station Domain Protection System

Based on the traditional protection system, a constitution scheme of station domain protection system is proposed. The protection logic signal and the switch status signal output by the existing interval protection device are uploaded to the station domain host through the GOOSE network in accordance with the IEC61850 standard, and then the station domain host quickly and accurately identifies the internal fault according to the protection action signal of each protection device. Finally, issue the trip command to the intelligent terminal through the GOOSE network to clear the fault. The protection mode has good adaptability to the existing intelligent substation standards, and also meets the requirements of on-site operation and maintenance personnel. It can also complete the natural degeneration to the existing protection system under extreme conditions such as station host failure or communication system interruption.