Research And Application Of Online Monitoring System Of Running State Of High Voltage Transmission Line

One of the most critical parts of the power transmission in the power system, is High voltage transmission line. Its running state is related to the efficiency and safety of power grid operation.However, some affecting factors such as line aging,meteorological disasters and external force, make the destruction of transmission lines,and weaken the safety of power grid. Using high-voltage transmission line running states online monitoring technology, through the remote monitoring and data collection was carried out on the transmission wires, can real-time reflect the line running state, warn the line abnormal spots, and remind staff accordingly operation,guarantee the safety of the operation of electric network effectively. According to the situation of transmission line being ice damaged in Tieling power supply company,we put forward the idea of the on-line monitoring device installed.Research status, on the basis of high voltage transmission line on-line monitoring are analyzed,and this paper presents an on-line monitoring of high voltage transmission line monitoring system. System including detection terminal and monitoring center, monitoring terminal can detect the line voltage, current,temperature and Angle, and then by GPRS and GSM wireless communication technology matching can be traced back to the monitoring center, according to the received information and the analysis of the running state, Data monitoring center finally achieves on-line monitoring of transmission line. On the basis of the requirements of system design, this paper select the most appropriate way of power supply, communication mode and running state measurement sensors, then choose the appropriate data collection, control processing unit and designs the hardware and software of the system units, the paper eventually develops the monitoring system can satisfy experiment requirement.The reliability of the monitoring system is so important than we must guarantee it, in view of the condition of the laboratory, this article also tests system performance testing, the results show that the detection system can satisfy the continuous power supply, information collection, reliable communication requirements. At last in consideration of ensure the monitoring system for practical applications, this paper also studies the actual wires sag, tension and the load, provides the basis for the volume conductor ice coating and dynamic capacity.Proposed design scheme is feasible and advanced, and can satisfy the needs of the fully reflect the running state of the transmission line, and according to the test information staff can carry on the operation safely, reasonably, improve equipment utilization and security.