Study on Wind Induced Vibration Response of High-voltage Disconnector Switch by Wind Tunnel Test

The disconnector switch is highly sensitive to the wind load. Under the strong wind, such structure can have a huge wind-induced vibration, which may cause its destruction and result in the loss of the high-voltage substations. In order to study this vibration characteristic, the wind-tunnel test of the GW35-550 high voltage disconnector switch has been presented. In this paper, firstly its aeroelastic model with a scale ration of 1/3.775 was well designed and manufactures through finite element analysis. Then, the wind-induced response including displacement, acceleration and wind vibration coefficients have been obtained in the wind fields specified by the China code: Building Structure Load Specification (GB50009-2012). Experimental results shows that the maximum windinduced displacement is at the top of this model, and there have a strong cross-wind vortex-induced vibration phenomenon. This study can provide useful guidance for the material selection and mechanism design optimization of the disconnector switch.