대변위 풍진동 실험장치를 이용한 송전선 풍동실험
Wind Tunnel Tests Using Large Amplitude Wind-induced Vibration System for Transmission Lines
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참고문헌
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초록
착빙 및 착설에 의한 송전선의 갤로핑 발생 메커니즘의 규명을 위해 본 연구에서는 실제규모의 송전선 풍진동 모사를 가능하게 하는 실험방법과 실험장치를 개발하였다. 개발된 실험장치는 8줄의 탄성와이어로 지지되는 송전선단면 모형으로 구성되며, 수직, 수평 및 비틀림 방향으로 저 주파수에서 큰 변위의 진폭으로 진동이 가능하다. 풍동실험을 통하여 본 실험방법의 유효성을 확인 하였고 실제 송전선의 갤로핑현상의 재현이 가능하다는 것을 알 수 있었다.
Abstract
This study was conducted as an effort to find the method to carry out a complete investigation of the gallopingphenomenon of transmission lines under ice and snow accretion. With this study a method and test device that enables simulationof the galloping motion of actual transmission lines in a wind tunnel have been developed. The test apparatus proposed herecomposed of a transmission line section model supported in the wire axis direction by eight elastic cords. This equipment allowsthe section model to vibrate with large amplitudes at low frequencies in the vertical, horizontal, and torsional directions. The windtunnel test results has validated that the test apparatus would be able to confirm the phenomenon of the actual transmission lineGalloping.
참고문헌 (7)
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- Final report on wind force coefficient abstraction of transmission lines under ice and snow accretion, and galloping analytic program, , Tesolution Co. Ltd, ~ (2016)
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- Seok, Cheol-Geun, "Development of 3 dimensional elastic support system for wind tunnel test of large amplitude wind-induced vibration", The 19th Proceeding of WEIK Symposium, pp.21~22 (2016)
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