%0 Generic
%1 kromer1981application
%A KROMER, I
%A SAGI, L
%D 1981
%K Insulation Optimization Transmission Wind loading
%T APPLICATION OF ADVANCED METHODS TO TRANSMISSION LINE
INSULATION DESIGN
%X Considering recent progress in insulation
research and in statistical computation
of line performance, it appeared desirable
to reevaluate the transmission
system insulation requirements. A
comprehensive series of phase-to-ground and
phase-to-phase insulation tests was undertaken.
The test results overlap and extend
existing data, making available design
curves for flashover strength in the
145-765 kV range. In addition,the magnitude
of the swing angle of free - swinging insulator
strings as a function of the wind
velocity has been studied. The results of
this study provide a better accuracy of the
swing angle statistics for a reliable
assessment of this important performance
parameter. A statistical design procedure
was applied to convert the electrical performance
criteria to insulation clearances.
The relativ importance of design factors
and insulation duties is discussed. ~he
analysis also indicates possible reductions
in tower dimensions without significantly
impairing line reliability.