갤러핑 동적 모델을 이용한 수치계산

This paper is concerned with the dynamic modeling single and bundled transmission line. To cope with bundled transmission line, the spacer was modelled by a spring element. To this end, the kinetic and potential energies of a uniform wire are derived. The equations of motion are expressed in matrix form by using the Assumed Mode Method and Lagrange equation. It is suitable for numerical simulations. The algorithm for galloping simulations under the wind load is developed. By concerning the cross-section for snow accretion on the cable, total EOM which is considered aerodynamic coefficients is derived. The 2 nd order differential equation for EOM can be transferred to 1 st order state-space equation. And using the Matlab function ‘ode45’, a results for numerical calculations of galloping are obtained.