Abstract
The charging and motion characteristics of dielectric particles in the ion flow induced by corona discharge from AC transmission lines are the key parameters for investigating the corona effect and establishing the calculation model for corona characteristics. In this paper, a mathematical physical model for investigating the charging and motion characteristics of dielectric particles in the AC ion flow was established. On this basis, the influence of different roughness coefficients of conductors, voltages applied to conductors, different types of conductors, initial position of particles, multiple voltage periods, particle property on charging, and motion characteristics of dielectric particles were acquired. The research results can provide a reference for establishing the model for calculating the corona characteristics.
Highlights
The charging and motion characteristics of dielectric particles in the ion flow induced by corona discharge from AC transmission lines are the key parameters for investigating the corona effect and establishing the calculation model for corona characteristics
The influence of different roughness coefficients of conductors, voltages applied to conductors, different types of conductors, initial position of particles, multiple voltage periods, particle property on charging, and motion characteristics of dielectric particles were acquired
Corona discharge from conductors on AC transmission lines can result in various corona effects including corona loss,1–3 audible noise,4 and radio interference,5 which influence the environment of line operation
Summary
Corona discharge from conductors on AC transmission lines can result in various corona effects including corona loss, audible noise, and radio interference, which influence the environment of line operation. Zou explored the charging and motion processes of dielectric particles in the ion flow of DC transmission lines by considering the effects of gravity, electric field force, and Stokes viscous resistance. To investigate the charging and motion characteristics of dielectric particles during the corona discharge of conductors of AC transmission lines, a mathematical-physical model for investigating the charging and motion characteristics of dielectric particles in the AC ion flow was built. On this basis, the influence laws of different roughness coefficients of conductors, voltages applied on conductors, and different types of conductors on charging and motion characteristics of dielectric particles were explored
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