| The galloping of power transmission line occurs when an iced conductor's cross section produces aerodynamic forces. The galloping of power transmission line is a kind of vibration with low frequency (about 0.1~3Hz) and large amplitude (about 15 to 500 times of the power transmission line's diameter). The resulting amplitudes can induce inter-phase clashing which may create severe disruptions in the power supply and damage to insulator strings, support hardware and tower components. Severe galloping (and the combined effects of ice and wind loads) can cause cascading of the transmission line.With the fast development of the computer technique, using the computer to study the galloping of power transmission line becomes possible and necessary. This paper plans analyzing the rule of galloping using the computer simulation technique in order to find a new research way for the actual engineering.At first, in this paper the theory of the galloping is analyzed, the aerodynamic characters of iced power transmission line coiling with the air flow spoilers are discussed and compared with that without air flow spoiler. Using the ADAMS software, a nylon cord simulation model of 5 meter span is built to simulate and analyze the effect of the air flow spoiler. Then a test model in the lab is set up to test and modify the simulation model. At last, an ADAMS simulation model of the JIZHOU power transmission line is built. The span of this model is 304 meter. The disposing mode of the air flow spoiler in this span is optimized through simulation.
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