Abstract
Wind-induced deflection of overhead transmission line is a phenomenon of conductor non-synchronous swing caused by strong wind. Serious wind deflection will cause flashover and lead to line trip. It is of great significance to strengthen the monitoring of wind deflection of transmission line insulator. For transmission lines located in cold and strong wind areas, due to the need for on-site power supply, the long-term operation reliability of monitoring devices in low temperature environment is difficult to ensure. The monitoring scheme based on Fiber Bragg grating technology has the advantages of no on-site power supply, anti-electromagnetic interference and good insulation performance. It has a good application prospect in wind deflection monitoring of transmission lines in cold areas. This paper analyzes the characteristics of wind load, the causes of wind deflection of transmission line, and introduces the basic principle of measuring insulator inclination when using fiber Bragg grating sensor, which provides technical support for wind deflection monitoring of transmission line in cold areas and ensures the structural safety, safe and stable operation of transmission line.
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