Calculation of Ion Flow Field of Monopolar Transmission Line in Corona Cage Including the Effect of Wind

Abstract

In this work, the ion flow field of a monopolar transmission line inside the corona cage of a square cross-section is iteratively calculated concerning the effects of wind. The electric field distribution is solved analytically using the charge simulation method (CSM). Meanwhile, the upwind finite volume method (UFVM) with 2nd order accuracy is presented for the distribution of space charge density. Additionally, a dual mesh grid is established in the calculation domain, the interlaced geometric construction of the mesh assures a quick and effective convergence rate. In the final part, a reduced-scaled experiment is designed to examine the feasibility and accuracy of this approach, electric field and ion current density on the bottom side are measured by field mills and Wilson plates. The data numerically computed fits well with that acquired by measurement.

Influences of Wind Deviation on the Ground Resultant Electric Field under Parallel Operation of 750‐kV Ultra‐High‐Voltage Alternating Current and ±800‐kV Extra‐High‐Voltage Direct Current Transmission Lines Passing through Residential Areas in a High‐Altitude Area

“…Choopum and Techaumnat [14] investigated the effects of wind and shielding conductor on the ion flow fields of HVDC transmission lines. Li and Zhao [15] calculated the ion flow field of monopolar transmission line in corona cage including the effect of wind.…”