Research And Application Of Large-scale Power Supervisory Control System Based On VLAN

This paper applies VLAN technology into large-scale power supervisory control system. With the Olympic project " Power Supervisory and Control System on the Beijing Capital International Airport Terminal Three (T3) ", target intelligent building power distribution system, innovative technology development and research work of VLAN technology and intelligent supervisory and control technology which will be carried out for large-scale integrated intelligent building power distribution monitoring system, in the VLAN environment monitoring system to achieve intelligent distribution platform. To the management staff to provide a unified and open platform for the monitoring and management, through the entire system of real-time monitoring equipment to ensure that low-voltage distribution network in the stable operation.The intelligent power supervisory control system based on VLAN in this paper has many features, such as using Modbus Fieldbus for the acquisition of distribution system parameters and to communicate with other sites; using PLC and intelligent instruments to resolve the anti-jamming problems in the harsh environment; using front-end computer and center control computer to solve the reliability problems of communications; using VLAN technology to realize the power supervisory control system and the other seven intelligent systems running and sharing information on the one ground operation network;using two major methods, such as scanning with different data classifications and opening multi-channel communication mechanism, to improve the speed of communications and integrated performance of the large-scale intelligent power supervisory control system. Finally, the author achieves the intelligent power supervisory control system platform based on VLAN applied in the T3. The system has entered a formal operation, and made a good effect.