In order to suppress the galloping of catenary positive feeder in the strong wind areas of the Lanzhou-Urumqi high-speed railway

and to ensure the operation safety of the traction power supply system

we studied the anti-galloping effectiveness of the catenary positive feeder cable-stayed insulator. Taking the positive feeder as the research object

we established a finite element model of positive feeder based on structural mechanics. Then

the self-weight load of the wire was used to calculate the shape of the model. Thereafter

the corresponding aerodynamic load was added to the model to compare the galloping response of the positive feeder before and after installing the cable-stayed insulator. The research results show that

assuming the wind velocity is 15 m/s

the positive feeder gallops violently when the cable-stayed insulator is not installed

and the peak-to-peak values of vertical and horizontal displacement are 1.82 m and 1.81 m

respectively. However

after the installation of the cable-stayed insulator

the peak-to-peak value of the positive feeder galloping is significantly decreased

the maximum tension is reduced within the safe operation range of the wire

and the tension fluctuation is reduced

which proves that the installation of the cable-stayed insulator can effectively suppress the galloping of catenary positive feeder.