Oscillation of bundle conductors in overhead lines due to turbulent wind

Author

Diana, G. ; Cheli, F. ; Manenti, A. ; Nicolini, P. ; Tavano, F.

Author_Institution

Politecnico di Milano, Italy

Volume

5

Issue

4

fYear

1990

fDate

10/1/1990 12:00:00 AM

Firstpage

1910

Lastpage

1922

Abstract

An analytical methodology to simulate the dynamic behavior of bundle conductors in a turbulent flow is presented. The experimental methodology used in examining the oscillatory behavior of triple-bundled conductors in an operating transmission line is described, and the mathematical model used to predict oscillation amplitudes by comparing the theoretical with the experimental results is validated. The analytical methodology can be used to analyze ice galloping for any kind of bundle, provided the aerodynamic coefficients relevant to the particular ice profiles are known. The results obtained during experiments carried out on a span of an energized 420 kV line equipped with triple bundles and subjected to oscillations due to buffeting are given. The experimental data are compared with the analytical results and satisfactory agreement is obtained

Keywords

overhead line conductors; overhead line mechanical characteristics; wind; 420 kV; aerodynamic coefficients; bundle conductors; energised line; ice galloping; oscillatory behavior; overhead lines; triple-bundled conductors; turbulent flow; turbulent wind; Aerodynamics; Analytical models; Conductors; Finite element methods; Frequency; Ice; Power transmission lines; Predictive models; Shape; Wind speed;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.103688

Filename

103688