This paper presents experimental results associated
with human factors aspects of utilizing color contours to visualize
electric power system bus voltage magnitude information.
Participants were divided into three groups: the first group saw
only one-line numeric data, the second only one-line contour
data, while the third saw both. The purpose of the experiment
was to determine how quickly participants could both
acknowledge low voltage violations and perform corrective
control actions. Results indicated the contour only visualization
resulted in the quickest voltage violation acknowledgements,
while the numeric data only visualization resulted in the quickest
solution times. Testing was done using a modified version of the
IEEE 118 bus system
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