Corona Characteristic of Double Pendulum Damper Based on Orthogonal Test

Optimization the structural parameters can ameliorate the electric field distribution characteristic of electric fittings. Therefore, selecting the model parameter by orthogonal experiments, we established the plane test model using the finite element analysis software ANSYS to study the electric field distribution influenced by radius of the pendulum, length of swing arm and the swing angle. According to the range analysis results, it can be seen that the radius of pendulum is the most influential factor, followed by the length of the swing arm and the swing angle. The variance analysis results show that the most significant influences are radius of pendulum and length of swing arm, the swing angle is no sense. Though the calculations, corona test is carried out in this paper. The tendency of corona inception and extinction voltage with arm length and pendulum radius diameter were obtained. The research results can provide the reference date for practical engineering and a reference for the design and selection for application of UHV transmission line.