The research on security and stability control signal transmitted over public communication 2M circuit

In 2008, ice and snow disaster had made a great influence on control services to every power station, so in order to improve the ability of electric power communication net to cope large-area ice and snow such as in 2008, it is necessary to consider emergency channel of control signal as stand-by channel. Security and stability service is an important guarantee to grid running. This paper reveals that the performance of the public communication 2M circuit satisfy security and stability service requirements, through contrasting performance requirements between security and stability service and public communication 2M circuit. And use security and stability control system, located in Luo Ping and Bai Se, to connect to public communication net as model, then testing channel performance of public communication 2M circuit and the influences. Theoretical analysis and test results show that safety and stability control signal can be transmitted by 2M circuit of public communication net.