Abstract

SHANG, Wennian; GONG, Jun; ZHI, Xudong  and  WANG, Haoyang. HFFB Test and Wind-Induced Vibration Analysis on 1 000 kV Transformer Frame. Ing. Investig. [online]. 2023, vol.43, n.1, pp.1-.  Epub Feb 07, 2024. ISSN 0120-5609.  https://doi.org/10.15446/ing.investig.88403.

In order to propose a complete, wind-resistant design method for ultra-high voltage (UHV) transformer frames, the wind-induced vibration characteristics of a 1 000 kV transformer frame (TF1000) were studied using a high-frequency force balance (HFFB) test. Five section models and one whole model of the TF1000 were designed and constructed using 3D printing, and these were evaluated in a wind tunnel by means of HFFB tests for multiple loading scenarios. The finite element method (FEM) was used on the test data to analyze the wind-induced vibration on the TF1000. The results demonstrate that the shape factor of the TF1000 is significantly affected by the flow field type and solidity ratio; the minimum value occurs when the wind direction is between 30 and 45°. Moreover, all the shape factor values obtained by the test are larger than those established by the Chinese code. The wind-induced vibration analysis indicates that the most unfavorable wind direction for the TF1000 is approximately 60°, with a wind-induced vibration coefficient between 1,7 and 3,9.

Keywords : high-frequency force balance test; finite element analysis; 1000 kV transformer frame; shape factor; wind-induced vibration coefficient.

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