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Aeolian Vibration of Bundle Conductors
(1989)
Аннотация
The objective of CEA R&D Project ~o 177 T 510 is to measure, under laboratory
conditions, the aeolian wind power imparted to bundle conductors on overhead
electric power lines. The study bega~ with a literature survey to draw q~ the
experiences of other researchers and to optimize the design and procedure of
the tests. An adjustable two conductor bundle model was constructed and tests
were performed in the University of Toronto micrometeorological wind tunnel ..
The test conditions represented a range of possible bundle configurations and
wind speeds normally experienced on actual lines. This paper provides
background information, describes the test apparatus and procedures. It also
summarizes and discusses the· results and gives applicati'ons and
reconunendations.
The principal results show that, in general, the wind power imparted to the
downstream conductor of a bundle is greater than that imparted to a single
conductor. As the bundle separation is increased, the wind power imparted to
the downstream conductor decreases, the scatter of input wind power for
various velocities decreases, and the range of velocities in which the vortex
shedding frequency locks in to the natural frequency of the model narrows.
The downstream conductor behaved like a single conductor and received much
less wind energy when the bundle was oriented at angles greater than 20
degrees to the wind.
