In this paper, the effect of wind on positive corona behavior up to breakdown is studied for point-plane gaps when the wind is flowing axially (against or parallel to the direction of ion convection from the point to the plane). The repetition rate of streamer pulses and its randomness as influenced by wind has been determined for different applied voltages. The spatial distribution of the current density over the ground plane has been examined for different applied voltages in still air and with wind blowing in the axial and transverse directions. The time-averaged value of wind-blown corona current as a function of the applied voltage was also determined. The results obtained are correlated with previous findings and with the theories of corona discharges.

In this paper, the effect of wind on positive corona behavior up to breakdown is studied for point-plane gaps when the wind is flowing axially (against or parallel to the direction of ion convection from the point to the plane). The repetition rate of streamer pulses and its randomness as influenced by wind has been determined for different applied voltages. The spatial distribution of the current density over the ground plane has been examined for different applied voltages in still air and with wind blowing in the axial and transverse directions. The time-averaged value of wind-blown corona current as a function of the applied voltage was also determined. The results obtained are correlated with previous findings and with the theories of corona discharges.

In this paper a modified numerical method for calculating the precipitation efficiency of wire‐duct electrostatic precipitators is reported. Variation of mobility for both ions and particles in space surrounding the energized wires is taken into consideration. This method is based on solving numerically the main set of equations, defining the ionized field with presence of dust particles. The precipitation efficiency of the electrostatic precipitators is determined for the cement industry. The effect of different geometrical parameters on the precipitation efficiency is also reported. The precipitation efficiency of the wire‐duct electrostatic precipitator as influenced by both the applied voltage and the gas flow speed is discussed in this paper. The present findings are correlated to the physics of electrical corona discharge.

In this paper, the monopolar corona equations are solved numerically in flowing air for HVDC transmission lines with bundle conductors. The lateral distributions of the corona current density and field intensity over the ground surface and underneath monopolar HVDC models are calculated and compared with those measured experimentally.

For the cases of monopolar and horizontal bipolar coronas, the corona equations are solved for vertical bipolar geometry without restrictions with regard to the number of subconductors. The variation of ion mobility with lifetime, as well as the change of corona onset voltage from point to point around each subconductor, are taken into account. The lateral distribution of the field intensity and current density calculated and compared with those measured experimentally. These profiles also are compared with those for a horizontal bipolar test line. The effect of applied voltage, number of subconductors and the surface factor is studied.

The measured corona current contributed by each subwire in various laboratory-size bundle models and the total corona current change with wind over a wide range of applied voltages are described. The lateral spacial distribution of the time-average value of windblown corona current over the ground plate is measured for different applied voltages and different bundle geometries. The obtained results are compared to previous findings and to theories of corona discharge.

In this paper, the charge simulation method is applied for modeling the V-I characteristics of corona from monopolar bundled transmission lines without resort to Deutsch’s assumption. The calculated results are compared with those obtained using Deutsch’s assumption. The accuracy of the proposed method is discussed in the light of predicting values closer to those measured experiment ally.

In this paper, the charge simulation method is applied for modeling the V-I characteristics of corona from monopolar bundled transmission lines without resort to Deutsch’s assumption. The calculated results are compared with those obtained using Deutsch’s assumption. The accuracy of the proposed method is discussed in the light of predicting values closer to those measured experiment ally.

In this paper, the monopolar corona equation is solved using a modified finite element method (FEM) to give the corona current caused by overhea dc transmission lines without using the commonly-used Deutsch's assumption The method is free from empiricism and entails implicitly a decrease of thsurface field intensity of the conductor with the applied voltage in the same manner as observed experimentally. This in itself represents an additional improvement for the analysis of ionized field where the approximation pertinent to the assumption of constant surface field intensity is mitigated. The calculated corona current as well as the current density at the ground plane agreed with those measured experimentally for a laboratory model

In this paper, the monopolar corona equation is solved for bundle conductor using a modified iterative procedure to give the corona current contributed by each subconductor of the bundle. Some of the main underlying assumptions are waived in the present calculations. The variation of ion mobility with its life time as well as the change of corona onset voltage from point to point on each subconductor ore taken into account for the first time. The calculated corona currents from each subconduotor are compared with those measured experimentally for a laboratory model. Copyright © 1982 by The Institute of Electrical and Electronics Engineers, Inc.