The Monitoring on 500 kV Line Protection PCM Equipment

Along with the development of power grid,the security is becoming more and more important.Since there is no network management system for PCM equipment in 500 kV Shangdang switching station,if a fault occurs,it will affect the safety and security of power grid in Zhenjiang area.A method is introduced in the paper that the monitoring on PCM equipment in 500 KV Shangdang switching station can be realized by connecting the alarm signal of PCM to central station in Zhenjiang via existing optical transmission system and communication monitor system,.