| In recent years, the process of urbanization in Dalian has been accelerating, the overhead lines in the city and the surrounding areas have been gradually transformed into cable lines.However, the cable operation and maintenance personnel is insufficient, the cable tunnel management mode is extensive, it is difficult to guarantee the quality of cable operation and maintenance. Therefore, the intelligent monitoring equipment in the tunnel is an effective means to improve the operation and maintenance.The installation of online monitoring system in cable tunnel is selected in the main cable surface temperature monitoring, environmental monitoring, tunnel shield grounding current monitoring, video monitoring, manhole condition monitoring functions. To lay the foundation for the construction of high voltage cable network operation monitoring and maintenance expert system, carry out multi parameter monitoring and analysis of high voltage cable network operation state, then carry out condition based maintenance, finally realize the purpose of fault warning, intelligent transmission network analysis, emergency command,quick response.Firstly, this paper introduces the current situation and existing problems of the cable tunnel in Dalian area, reviews the development course of the cable tunnel online monitoring system, and expounds the purpose and significance of the online monitoring system.According to the actual situation of cable tunnel in Dalian area, the monitoring system should follow the advanced, safety and stability, unity and expansibility design principle,introduces the OPC technology and real-time database technology centralized monitoring platform used(RTDB), multiple sources of data conversion technology, the key technology of IEC61850 standard communication protocol based on a variety of. The design of distributed hierarchical system architecture design, object-oriented analysis and design methods of the system.Secondly, select the Huachang substation outlet cable tunnel to install online monitoring system and monitoring system based on the framework, were detailed design of centralized monitoring center, two level monitoring sub station, cable tunnel monitoring subsystem,shield current monitoring subsystem, cable tunnel video monitoring subsystem, monitoring subsystem covers state system and communication system; and then a brief description of the situation after the practical application of online monitoring system for cable tunnel, the finalanalysis of the on-line monitoring system for cable tunnel of the economic benefit,management benefit and social benefit.The on-line monitoring system for cable tunnel has been put into use, is currently running well, played in the tunnel and the real-time monitoring function, and save a lot of operation and maintenance costs, and provides valuable experience for the comprehensive promotion of online monitoring system for cable tunnel in Dalian area. |
PDF Full Text Request