DEVELOPMENT OF GALLOPING CONTROL DEVICES
AND ITS OPERATION RECORDS IN JAPAN
(1986)Abstract
Galloping is the phenomenon seriously impairing the
operation of overhead transmission line, against
which each country has difficulty in taking
appropriate countermeasures. As the method of
suppressing such a galloping phenomenon, the
galloping control devices aiming at prevention of
harmonic growth of torsional and vertical motions
of multi-bundled conductor were developed in Japan.
At the initial stage after the development, these
devices were installed on a few actual lines for
verification of its suppressing effect and , as the
result , the possibility of widely reducing the
tension var iation a nd amplitude of conductors was
verified . Thereafter , same devices were installed
to about 40 lines and have been oper a t ed for abou;
10 years since then. During this period those
lines have never encountered any trouble caused by
galloping . Thus, the devices have contributed t o
imp~ovement of the reliability of overhead transmission
lines.
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