Clean fog and live washing performance of vertical HVDC bushings

Schneider, H.; Guidi, W.W.; Gleadow, J.

doi:10.1109/61.97726

Cited by 3 publications

(2 citation statements)

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“…In the context of sliding discharges occurring on clean or dry bushing surfaces, the initiation voltage for sliding discharge can be deduced through the transmission line model [21,27].…”

Section: The Development Of the Arc On The Surface Of Polluted Ac Bus...mentioning

confidence: 99%

“…The model systematically explored the impact of parameters such as dry zone length, voltage polarity, rain, and creepage distance on flashover outcomes, yielding qualitatively aligned conclusions that robustly correspond with experimental observations. Then, the non-uniform wetting of the bushing surface has been explored by Tang and Raghuveer [18][19][20], Schneider et al [21]. These studies emphasized the significance of surface state inhomogeneity as a crucial factor influencing flashover characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Effect of vertical electric field components on the local arc development along contaminated surfaces

Wen,

Cao,

Wang

2024

Phys. Scr.

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During operation, a vertical-component electric field emerges on the surface of high-voltage AC bushings. This unique electric field structure renders the bushing more susceptible to discharge and flashover. However, limited attention has been paid to studying the flashover characteristics resulting from surface pollution in such electric fields. This investigation, involving four differently structured bushings as well as post insulators, delves into the impact of pollution, creepage distance, and electric field structure on bushing flashover characteristics. The study reveals that increasing the creepage length of heavily polluted bushings does not significantly enhance their flashover voltage. Moreover, the role of the vertical electric field in the local arc development was analysed. This research could provide valuable references for future bushing design in polluted areas.

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“…In the context of sliding discharges occurring on clean or dry bushing surfaces, the initiation voltage for sliding discharge can be deduced through the transmission line model [21,27].…”

Section: The Development Of the Arc On The Surface Of Polluted Ac Bus...mentioning

confidence: 99%