电网技术Issue(5)：1237-1243,7.
输电塔线耦联体系风洞试验及数值模拟研究
Wind Tunnel Test and Numerical Simulation on Transmission Tower-Line Coupling System
摘要
Abstract
Based on the engineering background of a certain 500kV power transmission line, a full aero-elastic model of a two-span tower-line system is designed and wind tunnel test is performed to research wind-induced response of the transmission line. Utilizing finite element analysis software ABAQUS a spatial finite element model of the two-span tower-line system is built and dynamic response of the tower-line system in stochastic wind field is calculated, and the coupled vibration characteristics of the transmission tower-line system is discussed. Research results show that the existence of transmission line makes the background response of the tower-line system intensified and the damping of tower-line system increased, so the resonant response is weakened; the coupling effect of tower-line system causes different impacts on acceleration and displacement of tower. The energy cross between the power spectral density of tower response and that of transmission line may appear at high wind speed, and it makes the coupling between tower and line greatly intensified, and it is highly possible to lead to coupled resonance of tower-line system, therefore during the design of transmission tower it is necessary to take the adverse affect on the response of tower due to coupled vibration of the tower-line system into account.关键词
输电塔线体系/风洞试验/能量传递/数值模拟/风振响应/耦联振动Key words
transmission tower-line system/wind tunnel test/energy transfer mechanism/numerical simulation/wind-induced response/coupled vibration分类
信息技术与安全科学引用本文复制引用
谢强,杨洁..输电塔线耦联体系风洞试验及数值模拟研究[J].电网技术,2013,(5):1237-1243,7.基金项目
国家自然科学基金项目(50778135，51278369)。@@@@Project Supported by National Natural Science Foundation of China(50778135,51278369)． （50778135，51278369）
