Analysis of the Shielding Effect of Wire Mesh to Ion Flow Field from HVDC Transmission Lines

摘要

The electrification of objects under HVDC transmission lines due to ions generated by corona discharge may lead to pernicious consequences. This work investigates the shielding effect of the wire mesh to the drifting ions. Firstly, The mathematical model of the ion flow field with the presence of wire mesh is derived, and the flux tracing method (FTM) is adapted to simulate the interaction between the wire mesh and the drifting ions. Secondly, the indoor experiments about the shielding effect of the wire mesh to the ion flow field are presented, and measurement results are being compared with simulation results, which validate the method. Finally, the relationship between mesh parameters and shielding effect is analyzed in detail.