High Voltage AC Transmission Lines: Reduction of Corona under Foul Weather

Heroux,; Maruvada,; Trinh,

doi:10.1109/mper.1982.5519446

Cited by 1 publication

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“…The study showed that the application of thin wire changes the corona mode from streamer to glow by suppressing streamer formation. Heroux [11] conducted a test on improving the corona performance of a high-voltage conductor and concluded that the ionic space charges from glow corona lower the electric field at the conductor surface and thus suppress corona activity efficiently. However, the application of thin wire on power conductors is not advised because of the great corona losses.…”

Section: Introductionmentioning

confidence: 99%

Suppression of Glow Corona on Streamer and Influence of Thin Wire on its Inception

Sima¹,

Fan²,

Yang³

et al. 2015

Journal of Electrical Engineering and Technology

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-Glow corona is a kind of streamer-free corona that can suppress upward leaders in transmission lines. Thus, it has good application potential in lightning protection. This paper investigates its corona characteristics. The suppression characteristic of glow corona on streamer is studied in air gap under negative DC voltage by wrapping thin wires on the electrode. The effect of thin wire winding patterns on the gap breakdown voltage is analyzed. Results are considered to be attributed to the inception condition of glow corona. Thus an inception test of glow corona is also conducted, and the inception voltage is obtained. Results show that the inception voltage decreases with short winding pitch. Thus an investigation on the inception of glow corona influenced by thin wire is conducted, and an influential factor is proposed to evaluate the influence. The inception regular of thin wire glow corona presented in this paper has certain reference value for the application of glow corona in transmission lines.

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Section: Introductionmentioning

confidence: 99%