Transmission Line Anti-icing And Mitigation Technology Research And Iced Online Monitoring System Design And Implementation

In recent years,most parts of Southern China power transmission and distribution facilities suffered severe ice storm, which caused a great loss to the economy. After the disasters, the investment of reconstructing and updating of the grid system is rather big. Up to now, we do not have sound research in precaution, treatment and recovery against ice disaster in power system, while the standards of anti-ice coating design still needs to improve. The ice-melting and de-icing technology on transmission facilities is poor. It is quite necessary to make studies on anti-ice and ice-storm recovery.This article made a research about the exposure problems caused by ice disaster. Then it analyzed the ultimate weather condition leading to ice disaster, transmission line planning and designing, anti-ice materials and de-icing technology. Based on the previous analysis and statement of icing flashover in 220kV transmission lines in Gulin County, this article made a further research on the rules of icing flashover in transmission lines, and then came up with an anti-flashover solution for 220 KV transmission lines in Luzhou.With the study on both domestic and foreign de-icing methods and analysis of the220kV and 110kV grid structure in Xuyong and Gulin area, this article also complete the model for melting ice, including calculation model for time and current calculation. Besides this, this article explored the feasibility of AC ice-melting and put forward some detailed measures of ice-melting. This article also studied the ice-melting equipments construction plan in Luzhou as well as the parameter s setting and on-the-spot debugging research.This article also studied the principle for the on-line monitoring and warning system. Calculation of ice thickness, ice load and the ratio of the ice after the upload and the basic physical equations of transmission lines were covered in the study. This article raised implementation plan for functional modules in the system, system architecture, system design, system interface and workflow and communication technologies.Through the in-depth study of regional power grid ice-melting and warning system, this article demonstrated the theoretical supports for transmission line design, procurement, testing, installation, testing and maintenance. A simulation result shows that the theoretical calculations matches test data. The application of the system will greatly improve transmission line management personnel in technology and decision-making capacity. Prevent accident and ensure the safe operation of power.