Research on Flashover Factors of Jumper Wires Caused by Windage Yaw and Its Preventive Measures
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Abstract
In consideration of the phenomenon that jumper flashover is easy to occur in southern coastal area of strong wind, the article analyses the main reasons of flashover, references the value of gust wind factor from several international design standards, explains the origin of the relevant provisions of "Design specification for transmission line against typhoon" proclaimed by China Southern Power Grid, and it compares different kinds of jumper string's effects on inhibition of jumper flashover. The research shows that an appropriate increase in the span factor of jumper can improve the swing calculation model on insufficient considering of the natural wind turbulence characteristics, and to promote the use of rigid jumper can significantly inhibit the swing trip accident rate of tension tower in the coastal area of strong wind.
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