Research And Realization Of Distributed Remote Operated Terminal Of Power System Based On ADSP And CAN Bus

Presently in the domestic substation automation monitoring and control system, the serial communication pattern(RS232,RS485 bus and so on) has being used in most power remote operated terminal system, there still have many defects. For example, the velocity of transmission adopting serial communication is very slow, easily disturbed, and the mode is not flexible. And single-chip microcomputer has been used in early remote terminal unit(RTU), because of the poor ability of real-time response and signal process, it couldn't satisfy the transmission of real-time data in the substation. On the strength of the above-mentioned premise, a new distributed remote terminal unit is introduced in the paper. In the intelligent remote terminal unit the high performance Digital Signal Processor ADSP-21065L is regarded as the controller, CAN bus is regarded as communications network to make up distributed system. The ability of real-time response, communication of the data and signal process of remote operated terminal system has been enhanced greatly. At the same time the software of Kingview has been used to design the interface of monitoring and control centre. And So the system can satisfy the need of the development of the substation automation system.