Title :
Calculation of large ion densities under HVDC transmission lines by the finite difference method
Author :
Suda, Tomotaka ; Sunaga, Yoshitaka
Author_Institution :
Komae Res. Lab., Central Res. Inst. of Electr. Power Ind., Tokyo, Japan
fDate :
10/1/1995 12:00:00 AM
Abstract :
A calculation method for large ion densities (charged aerosols) under HVDC transmission lines was developed considering both the charging mechanism of aerosols by small ions and the drifting process by wind. Large ion densities calculated by this method agreed well with the ones measured under the Shiobara HVDC test line on the lateral profiles at ground level up to about 70 m downwind from the line. Measured values decreased more quickly than calculated ones farther downwind from the line. Considering the effect of point discharge from ground cover (earth corona) improved the agreement in the farther downwind region
Keywords :
HVDC power transmission; aerosols; corona; finite difference methods; ion density; ions; power overhead lines; HVDC transmission lines; Shiobara HVDC test line; charged aerosols; charging mechanism; downwind region; drifting process; earth corona; finite difference method; ground cover; ground level; ion densities; lateral profiles; point discharge; wind; Aerosols; Atmospheric measurements; Corona; Current measurement; Finite difference methods; HVDC transmission; Space charge; Testing; Transmission line measurements; Wind speed;
Journal_Title :
Power Delivery, IEEE Transactions on
