MODELING TECHNOLOGY FOR BUNDLED POWER
TRANSMISSION LINES
EPRI TD-232
(Research Project 215)
Final Report
(1976)Abstract
The effect of twisting bundled power transmission 1 ines was studied
on a model basis. The study sought conductor support rotations
that would minimize the aerodynamic interaction of conductors within
the bundle. The aerodynamic wake is responsfble for sustaining a
troublesome form of conductor vibration known as subconductor oscillation.
This oscillation wears the conductors and results in mechanical
failure. The mechanical properties of model conductor materials
were measured along with 1 ike properties of comnonly used conductors.
The test methods employed in these measurements are described. Models
of the bundled power 1 ines based upon engineering similitude considerations
were built and tested for behavior during twisting. Even
though an actual twisted prototype system was not available, analysis
of the 32 models built suggests that bundle behavior is adequately
modeled for engineering purposes. Favorable end support rotations for
two, three, and four conductor bundles are enumerated along with detailed
mechanical properties of nine commonly used conductors and 60
model materials.
Links and resources
Tags
community
@chkokalis's tags highlighted