Field Observation and Field Experiment of Transmission Line Cable

• Published in: Nihon Kaze Kōgakkai shi Vol. 26; no. 1; pp. 86 - 86_105
• Main Authors: YUKINO, Teruhiro, SAWADA, Jun, HASE, Yuji, TAKEDA, Kozo, OOTA, Yoshihiko, FUJINO, Yozo, YAMAGUCHI, Hiroki
• Format: Journal Article
• Language: English
• Published: Tokyo Japan Science and Technology Agency 2001
• ISSN: 1349-3507; 1349-340X
• DOI: 10.5359/jwe.26.86_95

There are some kinds of cable vibration phenomena occurred on transmission line. Notable vibration of them is called "Galloping". This vibration causes electrical outages and fatigue damages to these transmission lines, though this phenomena has not been clarified. Therefore, we have been studying and observing these galloping to comprehend the mechanism of this kind of vibration and confirm the effects of unti-galloping devices from 1950's. In 1975, galloping was defined as the low frequency self-excited vibration with large amplitude that is occurred by the lift force that is caused by the ice or snow accreted cable those shape is non-symmetric cross section under the wind velocity of more than 7m/s (10 minutes average). Thereafter, many kinds of field observations and experiments have been carried on using the full scale test lines as well as the operating lines. This paper denotes that these outline before mentioned and the characteristics of galloping phenomena.