Corona Onset Models: A Computational and Experimental Evaluation

Souza, Ailton Lopes; Lopes, Ivan J. S.

doi:10.1109/ceidp.2008.4772927

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…However, determining a distinct onset voltage is difficult, since different characteristics, like corona currents, light or sound emissions, can be used to detect the appearance of discharges, which may lead to different results [12,16]. Within this paper, corona current based methods were chosen, using total corona current as well as ion current density at ground level to identify corona inception.…”

Section: Simulationmentioning

confidence: 99%

Ion flow simulations of HVDC conductors under rainy conditions

Schultz

Pfeiffer

Franck

2015

11th IET International Conference on AC and DC Power Transmission

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During the last years, more and more renewable power generation units have been connected to the European power grid, creating demands for higher transport capacity as well as longer transport distances. Plans for the construction of HVDC and hybrid HVAC/HVDC corridors in Europe lead to an increased interest in the corona behaviour of direct current overhead lines. Within the scope of this paper, simulations and measurements are conducted to analyse the accuracy of the used simulation tool for rainy conditions, which is constituting an important study case since corona intensity is significantly increased during periods of precipitation. Especially, charge generation at the conductor surface and its influence on total corona current as well as on the ion current distribution at ground level under rainy conditions are investigated. As a result, the idea that a single onset field strength can describe the entire V-I characteristic of an overhead line under rainy conditions is challenged. It is shown that a field dependent correction factor for the onset field strength can improve the accuracy of simulations considerably. Additionally, in order to improve the simulated current distribution at ground level, a method to inversely calculate charge generation profiles is introduced.

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Section: Simulationmentioning

confidence: 99%

Ion flow simulations of HVDC conductors under rainy conditions

Schultz

Pfeiffer

Franck

2015

11th IET International Conference on AC and DC Power Transmission

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“…The impact of various variables on corona power losses and corona onset voltages was determined, and DC and AC tests were performed at Fuat Kulunk high voltage laboratory of Istanbul Technical University (Eroncel et al, 2010). Investigation of corona onset was done, and different factors such as the electric field (E-field) distribution around the electrodes and their surface conditions were taken into account (Souza and Lopes, 2008). The corona inception voltage (CIV) of positive discharges in a typical wirecylinder electrode arrangement in air was studied under high voltage DC application, finite element analysis (FEA) implemented.…”

Section: Introductionmentioning

confidence: 99%

Pressure and temperature effects on corona onset voltage in electrostatic precipitators

Fuliful¹

2017

Int. J. Phys. Sci.

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Corona onset voltage is one of the most important factors that determine the charging toxic particle in an industrial application. Electrostatic precipitators (ESP) remove the suspended particle with a gas inlet. This paper developed Peek's formula to estimate the maximum electric field near the discharge wire in corona discharge models, the values of maximum electric field and corona onset voltage near the discharge wires have been calculated for different values of pressure and temperature for confined gas in a region between the electrodes in ESP. The model uses finite difference method (FDM) to solve governing equations (Poisson's and current continuity equations) simultaneously. Computer simulation method uses FORTRAN program to estimate potential distribution and maximum electric field intensity. The calculated corona onset voltage values are compared with the calculated values of different models.

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Corona Onset Models: A Computational and Experimental Evaluation

Cited by 2 publications

References 6 publications

Ion flow simulations of HVDC conductors under rainy conditions

Ion flow simulations of HVDC conductors under rainy conditions

Pressure and temperature effects on corona onset voltage in electrostatic precipitators

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