The Railway SCADA Maintenance System Base On SNMP Protocol

The railroad of my country develops with high-speed and heavy-duty repaid. The requirements of reliability about railway Power Supply System that related closely with the safety and stability of the traffic is increasing daily. The important of SCADA displays outstanding daily, it is applied to all the pieces of the trunk and high-speed rail system as the important parts of the traction power supply dispatcher. In the process of practical maintenance, owing to the number of nodes of network inside of SCADA system is considerable, the environment is complex and the net maintenances have unequal skill of computer network, the busiest channel faults and the fault resolution of computer information network device have been the mainly problem of application and carry of system SCADA.This essay will shows the design of traction power supply system information re mote equipment monitoring system. The principle is put the web service skill applied to the remote network management system and raises a model of the monitoring systems that combined universal distributed and universal centralized. Based on snmp a greement the basic function would be achieved, and the application would be disposed depe nded on PHP technology, html, and insert model. The whole remote information equipmen t is designed and realized to be a physical system which possesses the 3 layer architecture ba sed on the user application, intermediation and storage layer. SCADA device monitoring syst em have the ability that could get accurate fault localization with the alarm function, and it c ould bring great benefit for despatcher and Remote maintenance.