Investigation And Design On Web-Based RTU In Telecontrol System For Electrical Railway System

In this thesis, we realize the Web-Based RTU in telecontrol system for electrical railway systems by using new techniques of computer, communication, and existing the resources of super-speed fiber optic cable that we have already had. Besides, we also realize the multi-receiver of the RTU real-time information and the consistency of the information; the bottleneck problem of the communication and 'Information Solitary island' can also be solved. Improving the consistency and real-time performance of information transmission, sending all kinds of information more accurate, safety and faster to the places where the information is required and receiving permitted, realizing larger scope information sharing are all newly and highly anticipated projects in the area of supervise and control.This paper first introduces three parts of the telecontrol system for electrical railway system: Control Center, RTU and Channel and pointed out the shortcoming of the traditional type. Then this paper puts forward Web-Based telecontrol system for electrical railway system and designs its hardware structure. In this paper, we completely discussed and designed the Web-Based RTU in telecontrol system for electrical railway system. First, in this paper, we divided RTU into Internet-RTU, Intranet-RTU and Normal-RTU on scale. LAN method to realize Web-based Internet-RTU and Intranet-RTU and Internet-RTU join the Internet by adopting the router equipments are given, then, the conjunction mode between LAN and El channel and two resolved scheme are designed and compared: router mode and conversion equipment mode. For the rebuilding of old Normal-RTU station and the building of new Normal-RTU station, this paper presented two schemes, one is getting electronically linked directly and the other is getting electronically linked via protocol converter, the methods of establishing the IP address and announcing the information through border upon RTU to realize Web-based Normal-RTU are proposed too. This paper also analysis international SCADA standard protocol-1EC60870-5 and DNP3.0. and points out that Web -based RTU should use IEC60870-5-104 and TCP/IP protocols.As an example, this paper built basic Web systems of the test RTU systems by using Windows2000Server, IIS and SQL Server2000. And also, Dynamic web pagesystem based on three-tier architecture of the test RTU system was built by means of the JSP technology, web server technology and JDBC technology. Then this paper provided the details of produce of the Dynamic web page and the communication between web server and web browser. Furthermore, information security of the web-based RTU test system was also discussed, the resolve methods were pointed out too.This paper finally made outlook of the further research of this project.