A novel simulation method for positive corona current pulses

A novel two-dimensional(2D) simulation method of positive corona current pulses is proposed.A control-volumebased finite element method(CV-FEM) is used to solve continuity equations,and the Galerkin finite element method(FEM) is used to solve Poisson’s equation.In the proposed method,photoionization is considered by adopting an exact Helmholtz photoionization model.Furthermore,fully implicit discretization and variable time step are used to ensure the time-efficiency of the present method.Finally,the method is applied to a positive rod-plane corona problem.The numerical results are in agreement with the experimental results,and the validity of the proposed method is verified.