Finite Volume-Based Approach for the Hybrid Ion-Flow Field of UHVAC and UHVDC Transmission Lines in Parallel

Yin, Han; He, Jinliang; Zhang, Bo; Zeng, Rong

doi:10.1109/tpwrd.2011.2165344

Cited by 41 publications

(20 citation statements)

References 20 publications

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“…A commonly used model [9], [17], [22] based on the onset gradient is employed. The charge density can be computed from a first-or a second-order method (secant) on…”

Section: E Choice Of the Charge At The Conductormentioning

confidence: 99%

Improved Coupled Ion-Flow Field Calculation Method for AC/DC Hybrid Overhead Power Lines

Guillod

Pfeiffer

Franck

2014

IEEE Trans. Power Delivery

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“…A commonly used model [9], [17], [22] based on the onset gradient is employed. The charge density can be computed from a first-or a second-order method (secant) on…”

Section: E Choice Of the Charge At The Conductormentioning

confidence: 99%

Improved Coupled Ion-Flow Field Calculation Method for AC/DC Hybrid Overhead Power Lines

Guillod

Pfeiffer

Franck

2014

IEEE Trans. Power Delivery

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“…Most of these tools base the rate of charge injection on the difference between the spacecharge-free surface electric and an empirically (or directly experimentally) determined onset field strength, E on [35], [36], [37], [38]. This paper showed that while there is no measurable difference in the E on for different conductor types, their subsequent V-I characteristics differ significantly with differences in the corona current of nearly 30% at realistic surface gradients.…”

Section: B Impact Of Conductor Typementioning

confidence: 97%

Impact of Conductor Surface Type and Rain Intensity on HVDC Corona Losses

Pfeiffer

Franck

2015

IEEE Trans. Power Delivery

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This paper presents the results of a series of indoor laboratory experiments carried out on DC energized overhead conductors subjected to simulated rainfall. In a first set of experiments, the impact of rain intensity on the corona onset voltage and total corona losses was investigated. With regard to the onset voltage, no significant impact was observed, whereas a weak positive correlation with total corona losses could be established. In a second set of experiments, the impact of different conductor types on the same two quantities was examined. The most notable result is that the combined use of Z-profiled-strands and sand-blasted surfaces lead to reductions in the total corona current of around 29% and 42%, for positive and negative polarity respectively. The corresponding reduction of ground level ion currents and ion coupling with parallel conductors is expected to be of the same order of magnitude.

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“…The simplified ion-flow model is constructed based on the following assumptions. 11,[18][19][20][21] (1) The impact of electrons is neglected.…”

Section: Simulation Of the Ion-flow Fieldmentioning

confidence: 99%

“…The numerical method proposed in the authors' previous work is used to solve the ion-flow field. 20,21 When the static electric field on the conductor surface is 100 kV/cm, the corona pulses measured in different corona cages and the associated space charge distributions calculated by the numerical method are shown in Fig. 8.…”

Section: Simulation Of the Ion-flow Fieldmentioning

confidence: 99%

Measurement of positive direct current corona pulse in coaxial wire-cylinder gap

Yin

Zhang

et al. 2014

Physics of Plasmas

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In this paper, a system is designed and developed to measure the positive corona current in coaxial wire-cylinder gaps. The characteristic parameters of corona current pulses, such as the amplitude, rise time, half-wave time, and repetition frequency, are statistically analyzed and a new set of empirical formulas are derived by numerical fitting. The influence of space charges on corona currents is tested by using three corona cages with different radii. A numerical method is used to solve a simplified ion-flow model to explain the influence of space charges. Based on the statistical results, a stochastic model is developed to simulate the corona pulse trains. And this model is verified by comparing the simulated frequency-domain responses with the measured ones.

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Finite Volume-Based Approach for the Hybrid Ion-Flow Field of UHVAC and UHVDC Transmission Lines in Parallel

Cited by 41 publications

References 20 publications

Improved Coupled Ion-Flow Field Calculation Method for AC/DC Hybrid Overhead Power Lines

Improved Coupled Ion-Flow Field Calculation Method for AC/DC Hybrid Overhead Power Lines

Impact of Conductor Surface Type and Rain Intensity on HVDC Corona Losses

Measurement of positive direct current corona pulse in coaxial wire-cylinder gap

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