Ion-flow field calculation of HVDC overhead lines using a high-order stabilisation technique based on Petrov–Galerkin method

The ion-flow environment is an important corona design factor of HVDC transmission lines. The space charges generated by corona form a typical convection-dominated ion-flow field. For this special transport phenomenon, however, standard Galerkin FEM always presents serious deficiencies. In this study, a new approach is used to solve ion-flow field based on Petrov-Galerkin method derived from the t...