NDLI: Numerical Analysis of Two-bundled Conductor Aeolian Vibrations with Spacer Dampers

Content Provider	IEEE Xplore Digital Library
Author	Kong Deyi Li Li Long Xiaohong
Copyright Year	2009
Abstract	Spacer dampers are attached on the bundled conductors to suppress aeolian vibrations for many decades. In present study a new aeolian excitation induced by shed vortex had been derived base on wind power equivalent principle; the spatial distribution and the wind power input can be considered. The two-bundled conductor with spacer dampers attached is simplified to the mass-spring-dampers modle; dynmic equation could be obtained by d’Alembert’s principle. The fourth-order finite difference scheme is derived to predict the vertical; steady-state; monofrequent aeolian vibration of bundled conductor with or without spacer dampers, and the displacement amplitude and dynamic bending strain of conductor could be obtained by using the iterative methods. Take 220kV two-bundled conductor as an example; the conductor with and without spacer dampers were computed by energy balance method and present model respectively. Results prove that spacers can restrain conductor aeolian vibration by means of choosing appropriate clamp damping and stiffness and the effect of interaction between two sub-conductors can be taking into account by present method.
Starting Page	561
Ending Page	565
File Size	354615
Page Count	5
File Format	PDF
ISBN	9780769535593
DOI	10.1109/ICECT.2009.56
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-02-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Damping energy balance method Conductors Shock absorbers Capacitive sensors Steady-state Equations finite difference scheme Numerical analysis Wind energy aeolian vibration Iterative methods two-bundled conductor Finite difference methods spacer damper
Content Type	Text
Resource Type	Article

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