Corona Current and Field Profile Underneath Vertical Bipolar HVDC Lines with Bundle Conductors

Abdel‐Sattar, S.

doi:10.1109/tei.1986.348945

Cited by 8 publications

(7 citation statements)

References 7 publications

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“…This can be attributed to the fact that the applied field changes around the periphery of each subwire and the point having the highest value of the applied field goes at first in corona. It is clear, for example, that at angle ψ = 90° for SWDEP the field is minimum and the corona onset voltage is maximum in agreement with previous findings in corona discharge [16,17]. Previous investigators have treated the corona onset voltage as a constant value.…”

Section: Resultssupporting

confidence: 87%

“…Most of the attempts reported in the literature were based on some simplifying assumptions [14][15][16][17], among them Deutsch's assumption. According to this assumption, which states that the space charges affect only the magnitude but not the direction of the electric field, equations (14)(15)(16)(17) can be reduced to the differential equations (18)(19)(20)(21)(22) as shown in Appendix A. These equations describe the distribution of the corona values in the interelectrode spacing in the case of the wire-duct electrostatic precipitators with bundle wires as discharge electrodes.…”

Section: Methods Of Analysismentioning

confidence: 99%

“…Bundle conductors are also used in HVDC lines [13][14][15][16][17][18] mainly to reduce the electric fields at the subconductor's surface with a subsequent decrease of corona losses.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrical Characteristics of Duct Electrostatic Precipitators as Influenced by Bundled Discharge Electrodes

Abdel‐Sattar

1991

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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In this paper, the electrical parameters of the duct electrostatic precipitators with bundle wires, as discharge electrodes, are calculated and reported. Variation of mobility for both ions and particles in the space surrounding the energized subwires is taken into consideration. The method used is based on numerically solving the main set of equations, defining the ionized field surrounding the subwires of the bundle wire‐duct electrostatic precipitators (BWDEP) with the presence of dust particles. This method predicts the electrical performance in the BWDEP irrespective of the number of subwires per bundle. The corona onset voltage around the periphery of each subwire of the bundled discharge electrodes of the duct electrostatic precipitators is determined. It changes from point to point at the subwire surface. The effects of different numbers of subwires per bundled electrode, as well as the subwires arrangement, on the electrical performance of the BWDEP are also reported and discussed in this paper. The present findings are correlated to the physics of the electrical corona discharge.

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Section: Resultssupporting

confidence: 87%

Section: Methods Of Analysismentioning

confidence: 99%

See 1 more Smart Citation

Electrical Characteristics of Duct Electrostatic Precipitators as Influenced by Bundled Discharge Electrodes

Abdel‐Sattar

1991

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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“…The electrostatic "eld description around ac, dc and hybrid ac/dc transmission lines have been presented in several papers (Abu-Seada and Nasser, 1972;Sarma and Drogi, 1988;Abdel-Salam and El-Mohandes, 1990;Abdel-Sattar, 1986;Ismail and Abu-Gammaz, 1999;Ismail, 1999;Singer et al, 1974). Abu Seada has applied the CSM and the method of images to calculate the potential gradient of twin cylindrical bipolar conductors with various geometrical parameters (Abu Seada and Nasser, 1972).…”

Section: Introductionmentioning

confidence: 99%

“…The author has not presented the total RMS values of the electric "eld generated from those con"gurations (Sarma and Drogi, 1988). Abdel-Sattar (1986) has reported a method to calculate the lateral distribution of the "eld intensity over ground surface and underneath vertical bipolar HVDC lines. Abdel-Salam has described the "eld around parallel dc and multi-phase ac transmission lines by using charge simulation technique combined with the method of imaging (Abdel-Salam and El-Mohandes, 1990).…”

Section: Introductionmentioning

confidence: 99%

Electric field analysis of hybrid ac/dc transmission lines

Ismail

2000

Int. J. Energy Res.

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Electric field and force characteristic of dust aerosol particles on the surface of high-voltage transmission line

Liu 刘,

Li 李,

Wang 王

et al. 2024

Chinese Phys. B

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High-voltage transmission lines play a crucial role in facilitating the utilization of renewable energy in regions prone to desertification. The accumulation of atmospheric particles on the surface of these lines can significantly impact corona discharge and wind-induced conductor displacement. Accurately quantifying the force exerted by particles adhering to conductor surfaces is essential for evaluating fouling conditions and making informed decisions. Therefore, this study investigates the changes in electric field intensity along branched conductors caused by various fouling layers and their resulting influence on the adhesion of dust particles. The findings indicate that as individual particle size increases, the field strength at the top of the particle gradually decreases and eventually stabilizes at approximately 49.22 kV/cm, which corresponds to a field strength approximately 1.96 times higher than that of an unpolluted transmission line. Furthermore, when particle spacing exceeds 15 times the particle size, the field strength around the transmission line gradually decreases and approaches the level observed on non-adhering surface. The electric field remains relatively stable. In a triangular arrangement of three particles, the maximum field strength at the tip of the fouling layer is approximately 1.44 times higher than that of double particles and 1.5 times higher compared to single particles. These results suggest that particles adhering to the transmission line have a greater affinity for adsorbing charged particles. Additionally, relevant numerical calculations demonstrate that in dry environments, the primary adhesion forces between particles and transmission lines follow an order of electrostatic force and van der Waals force. Specifically, at the minimum field strength, these forces are approximately 74.73 times and 19.43 times stronger than the gravitational force acting on the particles.

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Corona Current and Field Profile Underneath Vertical Bipolar HVDC Lines with Bundle Conductors

Cited by 8 publications

References 7 publications

Electrical Characteristics of Duct Electrostatic Precipitators as Influenced by Bundled Discharge Electrodes

Electrical Characteristics of Duct Electrostatic Precipitators as Influenced by Bundled Discharge Electrodes

Electric field analysis of hybrid ac/dc transmission lines

Electric field and force characteristic of dust aerosol particles on the surface of high-voltage transmission line

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