This nevertheless brings about continuously increasing occurrences of insulator string swaying-induced tower head-cable flashover accidents and equipment failure-induced line faults,which seriously threatens transmission systems'safe operation and electric supply.This work briefly analyzed the span swaying of transmission lines whose insulator strings were made from various types of materials by establishing a finite element model of transmission line insulator strings.It found that the material type of insulator string could hardly influence line span swaying and could not suppress wind-induced swing.
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