A study on swing and buckling of Y-type insulator strings under strong wind action for ±800kV UHDV transmission lines

Y-type insulator string is a new suspension insulator structure used in high voltage transmission lines. But the study on kinetic characteristics of the Y-type string under the strong wind action is scarce and non-systematic. The purpose of the present paper is to study the optimal structure of the...

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Bibliographic Details
Main Authors: Bin Liu, Caolan Liu, Kuanjun Zhu, Shengchun Liu
Format: Conference Proceeding
Language:English
Subjects:
Buckling
Finite element analysis
Finite element method
Fluctuating wind load
Insulators
Load modeling
Poles and towers
Power transmission lines
Suspensions
Wind speed
Y-type insulator string
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Summary:Y-type insulator string is a new suspension insulator structure used in high voltage transmission lines. But the study on kinetic characteristics of the Y-type string under the strong wind action is scarce and non-systematic. The purpose of the present paper is to study the optimal structure of the Y-type insulator string structure by analyzing the swing and buckling characteristics under strong wind action for ±800kV UHDV transmission lines. Two parameters, deviation displacement and buckling ratio, are proposed to characterize the influence of the fluctuating wind load. The advantages of the Y-type string are discussed compared with the V-type string. The influence on the cross arm length of the tower is discussed by the contrast on different angles of the V limb. The tower head size can be further optimized by analyzing the kinetic characteristics of Y-type strings under the strong wind action.
ISSN:2157-4839
DOI:10.1109/APPEEC.2013.6837138