Progress Report on BPA HV DC Test Line Radio Noise and Corona Loss

Bailey, Burt M.

doi:10.1109/tpas.1967.291865

Cited by 18 publications

(4 citation statements)

References 10 publications

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“…No differentiation between rain intensities or conductor types were made. In subsequent years results were presented for a test line by the Bonneville Power Administration [19], [20], [21], [22]. The data supports the finding in [18] that CL are approximately 3-5 times larger in rain compared to fair weather [20], [22].…”

Section: Introductionsupporting

confidence: 60%

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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Section: Introductionsupporting

confidence: 60%

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

Pfeiffer

Franck

2015

IEEE Trans. Power Delivery

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“…Outdoor measurements were able to confirm a significant increase of ion current and electric field levels [7,8,9,6,10,2] as well as a considerable influence on radio interference (RI) [11,12] due to rain. However, the published 20 data is limited and contains no detailed information that would allow to correlate rain drop properties and electrical corona characteristics.…”

Section: Introductionmentioning

confidence: 99%

Explaining the impact of conductor surface type on wet weather HVDC corona characteristics

Pfeiffer

Schultz

Hedtke

et al. 2016

Journal of Electrostatics

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Corona behavior of HVDC overhead lines plays a significant role when dimensioning transmission lines. Rain constitutes an important study case since corona effects (e.g. losses, discharge amplitudes) are considerably affected. In this paper, imaging methods are introduced to investigate the impact of rain on corona behavior. Geometrical properties of rain drops on a stranded conductor were extracted. UV-images were used to precisely locate discharges. The methods' capabilities are demonstrated using data from an indoor test line during a simulated rain shower. Optical and electrical data were correlated. These methods aim to support the development of surfaces with favorable corona properties.

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“…Other studies have focused on field strengths in a more practical range and have presented CL data for various weather conditions [16], [17], [20]. Rain is the most appropriate case for comparison as it shows the lowest seasonal variations and at the same time produces the highest CL [20].…”

Section: A Literature Comparisons -Bipolarmentioning

confidence: 99%

“…Fig. 5 shows measured and computed foul weather CL values for three different test lines [16], [17], [20]. In each of these publications, average CL values for rain were explicitly or implicitly presented.…”

Section: A Literature Comparisons -Bipolarmentioning

confidence: 99%