Theoretical and Numerical Analysis of Galloping of Bundle Conductors

Author

Zhang Huabiao ; Li Xinye ; Zhang Lijuan ; He Lijuan

Author_Institution

Sch. of Astronaut., Harbin Inst. of Technol., Harbin, China

fYear

2011

fDate

25-28 March 2011

Firstpage

1

Lastpage

6

Abstract

A 2 DOF model with the coupling of vertical and torsional motions is considered to study galloping of bundle conductors in this paper. By using the averaging method and the Routh-Hurwitz criteria, the motion equations are solved to discuss the stability of the trivial solution and find the influence of system parameters such as ice thickness, initial tension, vertical damping ratio and mass of unit length on the critical wind velocity. Based on some assumed condition, the calculation methods for the equivalent parameters of the bundle conductor are proposed to build the relations between ice thickness and the aerodynamics forces. Finally, the influence of wind velocity, ice thickness, initial tension, vertical damping ratio and mass of unit length on the amplitude of galloping is investigated.

Keywords

Routh methods; aerodynamics; numerical analysis; overhead line conductors; overhead line mechanical characteristics; 2 DOF model; Routh-Hurwitz criteria; aerodynamics force; bundle conductor; galloping; ice thickness; initial tension; motion equation; numerical analysis; system parameter; torsional motion; unit length mass; vertical damping ratio; wind velocity; Conductors; Damping; Ice thickness; Mathematical model; Stability analysis; Wind speed;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific

Conference_Location

Wuhan

ISSN

2157-4839

Print_ISBN

978-1-4244-6253-7

Type

conf

DOI

10.1109/APPEEC.2011.5748356

Filename

5748356