Shanghai rail transit pearl line comprehensive monitoring system

Application background of the project is the first in the domestic design and construction, the construction of the urban rapid rail transit line, is the national key project of the year in 2000. Shanghai rail transit pearl line by the Shanghai south railway station to jiangwan town station, total length of 24. 97 kilometers. Have 19 stations, the parking lot and car depot each one place. Across a total of 24 traction step-down transformer substation and step-down transformer substation. With the control center monitoring equipment. Light rail line which is equipped with power system SCADA monitoring system, station equipment monitoring system and fire alarm monitoring system, form a covering the above three subsystems 'triad' of comprehensive monitoring system, the system has the function of data acquisition, communication and graphic monitoring. Customer needs to monitor each substation operation data, following the alarm information, complete within the chain of logic control, line scheduling power equipment safety. Monitoring station equipment operation data of each station, the station of disaster prevention alarm information, etc. The system requirements is unsafe substation automation control, protection and control center for all power supply equipment, station equipment, fire equipment such as remote control, remote communication, remote sensing, remote scheduling function. And on the realization of system function, make the computer integrated monitoring system technology, and the full implementation of the relevant information resources sharing and scheduling of office automation. Solution as the first in the domestic city light rail, to power monitoring, station equipment and fire alarm system have higher requirements, with safe and reliable, simple extension and maintenance is convenient wait for a characteristic. In order to achieve the substation will be automated, considering each station charged equipment, intelligent instruments, equipment widely distributed and logic control difficult, we are in a series of 90 - at each station 70 PLC as a signal in the middle of the screen to every station, 90 - 30 PLC controller as a distributed I/O, through Genius net, collecting stations within each charged equipment information. With CIMPLICITY HMI as graphic monitoring system. And through a third party to provide optical fiber communication interface will be on-site data sent to the control center. In order to ensure data security and stability of the control center, choose the series 90 - in the center of the control 70 PLC redundancy system as a communication frontend, CIMPLICITY HMI redundancy system as a server, CIMPLICITYViewer as the workstation of each system. And use the redundant Ethernet communication network as the center of the control. System characteristics, system structure of distributed structure of Shanghai rail transit pearl line scheme is a fully functional distributed, hierarchical and distributed system. Scheduling, workstations, servers, communication machine, only communication between distant terminal execution unit and so on various interval data exchange relationship. Layered, distributed computer monitoring system to make future system expansion does not affect the normal operation of the existing system, reconstruction of quantities. When any one interval of the reliable operation of the terminal fault will not affect the other terminal, effectively improve the reliability of the whole of the 'triad' system running and a variety of operating functions and adaptability. Network structure in the central control center, through the redundant servers and communication lead institutions into double host double network structure, data flow and orderly management. Field lines, real-time control network using total Genius token ring structure. The whole network structure concise and clear, easy to expand, the network information exchange is reasonable. Information sharing, resource sharing 'triad' system power SCADA system, BAS, FAS system control monitoring system is an organic whole to decision support. Achieve resource sharing, information sharing, comprehensive performance is optimized. High reliability, 1) Remote device itself on the hardware and software technology to layers of insurance, atresia, self-check, self-diagnosis, since the launch, the reset powerful measures, such as high reliability. 2) Four kinds of redundancy mode is adopted in system: front, CIMPLICITY HMI Server redundancy, communication machine ( Series 90-70 - PLC) Redundancy, communication optical cable redundancy, network redundancy when a single failure occurs, the system will automatically switch to another set of equipment. In addition, the system is equipped with the historical database and historical curve for accident analysis and operation analysis. The results of Shanghai rail transit pearl line opened on December 26, 2000. While the project is domestic first be put into use before the formal operation of the comprehensive monitoring projects, won the user's praise.
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