Implementation and Design of the Control System for Poloidal Field Power Supply

Poloidal Field Power Supply (PFPS), which consists of twelve independent power supply subsystems, requires large amount of equipment and distributes over a larger area. In order to monitor on-site plant of PFPS in real-time, a distributed on-site real-time monitoring system has been described in this paper. This distributed on-site real-time monitoring system uses Ethernet fieldbus controllers based on Modbus/UDP so that it could achieve the effect of communicating with the PFPS controllers in real-time and the communication cycle would normally be 4 milliseconds. As a result, the distributed on-site real-time monitoring system could collect the device status of on-site plant, control switches on-off, and ability of warning for real-time emergency. All experiments have proved that the on-site real-time monitoring system works successfully and completely meet the requirement of monitoring the PFPS.