Design of Reliability Redundancy Mode for Computer Supervisory and Control System

For advancing reliability of computer supervisory and control system, according to system distinctness of structure and mode, the redundancy mode of security and reliability of system, it may be reduce to redundancy of power, controller, input/output and communication, as well as security and reliability of application software, and so on. This paper introduced reliability and redundancy of computer supervisory and control system for LongYangxia Hydropower Plant.