On Possible Influence of Corona Discharge on the Propagation Speed of Lightning Surges Along a Tall Grounded Object

Okada, Takenori; Baba, Yoshihiro; Tran, Thang Huu; Rakov, Vladimir A.

doi:10.1109/temc.2020.2995311

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…The most recent research of Cai et al 16 regarding lightning is statistical characteristics of current and magnetic fields at close distances from triggered lightning. The possible influence of corona discharge on the propagation speed of lightning surges along a tall grounded object was reported by Okada et al 17 in their research.…”

Section: Introductionmentioning

confidence: 63%

Mathematical modeling of impulse island controller to safely store the energy from high‐voltage lightning impulse

Jana

Biswas⃰

Sain³

2022

Energy Storage

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Extricating the energy from lightning impulse is very difficult for researchers due to the uncontrollability of hazardous and intermittent parameters. This paper proposed a mathematical method to island the lightning impulse to provide safety for the impulse storage system. The proposed model also can intelligently force the impulse to be extricated for the conversion system of the lightning energy storage device. This islanding controller is designed to increase the efficiency and safety of the storage system. Six essential parameters, that is, breakdown voltage, current dependency, spark channel radius, spark channel conductivity, coil inductance, and coil voltage, are considered to design the mathematical model. These parameters are formulated to record the responses of the proposed controller. All the equations are validated by using state of the art experiments and prototype hardware setup. The proposed method, mathematical model, and analyzed responses may assist lightning researchers in advancing lightning energy harvesting.

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Section: Introductionmentioning

confidence: 63%

Mathematical modeling of impulse island controller to safely store the energy from high‐voltage lightning impulse

Jana

Biswas⃰

Sain³

2022

Energy Storage

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“…Some FEM simulating tools are used, but the modeling of plasma dynamics inside corona makes the calculation quite time-consuming [96]. Recent research has proposed a simplified model to consider the corona developing process on OHLs by FDTD in the simulation of large-scale transmission lines [97][98][99]. Another model considering the physical process of corona is corona shell model, which points out that space charges generated by corona form a shell around the conductor [100].…”

Section: Review On Methods To Model Surge Coronamentioning

confidence: 99%

“…The critical background electric field is necessary for streamer propagation and determines the maximum extent of the radially expanding corona region. The corona sheath is assumed as an ideal conductor with a conductivity of 40 µS/m [99]. Electric field is the sum of the electric field created by conductor potential and the electric field created by space charges in the corona.…”

Section: Review On the Corona Parametersmentioning

confidence: 99%

Transient Lightning Impulse Performance Analysis of a Fully Composite Pylon with an External-grounding Down-lead

Zhang¹

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FDTD Simulation of a Small‐Scale Charged Airplane Model in an Ambient Electric Field between Two Flat Electrodes

Okada,

Baba,

Tsubata

2024

IEEJ Transactions Elec Engng

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When an airplane flies in an electric field under a thundercloud, electric fields at the edges and projected portions of the airplane are enhanced and leaders emanate from there. When a positive leader emanating upward from the airplane connects with a downward negative leader from the bottom of an ordinary thundercloud and a negative leader emanating downward from the airplane connects with an upward positive leader from the ground, a large lightning current flows along the channel bridged between the thundercloud and the ground through the airplane. Recently, a method to reduce the risk of lightning strikes to airplanes has been proposed. It controls the charge on the surface of an airplane to suppress the electric field at edges and projected portions of the airplane. In this paper, an airplane under a thundercloud is represented with a vertical conducting bar or a horizontal conducting bar with a small projected portion, which is placed between impulse‐high‐voltage‐applied two flat electrodes, and it is analyzed using the finite‐difference time‐domain (FDTD) method. Corona and leader discharges emanating from edges and projected portions of an airplane model are considered with their engineering representations: 40‐μS/m and 0.02 S/m conducting regions for corona and leader discharges, respectively. The airplane model is not pre‐charged or pre‐charged negatively. It follows from the FDTD‐computed results that pre‐charging an airplane model with a relevant amount of negative charge can avoid discharges from and to the airplane model. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.

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On Possible Influence of Corona Discharge on the Propagation Speed of Lightning Surges Along a Tall Grounded Object

Cited by 6 publications

References 13 publications

Mathematical modeling of impulse island controller to safely store the energy from high‐voltage lightning impulse

Mathematical modeling of impulse island controller to safely store the energy from high‐voltage lightning impulse

Transient Lightning Impulse Performance Analysis of a Fully Composite Pylon with an External-grounding Down-lead

FDTD Simulation of a Small‐Scale Charged Airplane Model in an Ambient Electric Field between Two Flat Electrodes

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