Abstract In order to investigate the wind-induced swing characteristics of the transmission line jumper wire to guide the reasonable arrangement of jumper wire and reduce flashover trip accidents caused by the wind-induced swing of jumper wire, the finite element wind vibration response analysis and wind tunnel test for the jumper wire of a 500 kV transmission line were carried out. Firstly, using the time-domain finite element analysis method, the wind vibration response of the 500 kV transmission line jumper wire was analyzed, and the influences of different wind speeds, different wind direction angles and the installation of suspension insulator string on the wind-induced swing characteristics of the jumper wire were studied. Then, based on the similarity theory, an aeroelastic model of 500 kV transmission line jumper wire was developed. The wind tunnel test was carried out and the results were compared with the finite element analysis results. The results showed that the wind-induced swing displacement of the jumper wire increased with the increase of wind speed and wind direction angle, which presented a direct proportional function relation with the wind speed. With the increase of wind direction angle, the increase amplitude of wind-induced swing angle of the jumper wire decreased. The installation of suspended insulator string could effectively inhibit the wind-induced swing of the jumper wire. The analysis results of the wind-induced swing of transmission line jumper wire can provide a basis for the theoretical study of wind-induced vibration of jumper wires and the actual construction of transmission lines.
Received: 18 December 2019
Published: 25 December 2020
ZHOU Chao, WANG Yang, RUI Xiao-ming. Finite element analysis and experimental study on wind-induced swing of 500 kV transmission line jumper wire. Chinese Journal of Engineering Design, 2020, 27(6): 713-719.
