Other Topics

Ficheux, Arnaud; Márquez‐Sánchez, Jorge; Becker, George; Sharma, Devki; Fujimoto, Noboru; Minisandram, Venkatesh; Bolin, Phil; Samanta, Pravakar; Koch, H.; Zhao, Linda; Zhu, Xiaoxi

doi:10.1002/9781118694534.ch09

Cited by 1 publication

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High reliability and transmission capacity have resulted in the wide use of gas insulation in electric power transmission and distribution components, such as gasinsulated switchgears (GIS) and gas-insulated transmission lines (GIL) [1]. With increasing demands for long-distance energy deliveries and large-scale offshore wind farms, direct current (DC) gas insulation apparatuses have been extensively investigated [2,3].…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on the Motion and Discharge Behavior of Free Conducting Wire Particle in DC GIL

Wang¹,

Wang²,

Ni³

et al. 2017

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-This study aims to restrain free conducting wire-type particles which are commonly and dangerously existing within DC gas-insulated transmission lines. A realistic platform of a coaxial cylindrical electrode was established by using a high-speed camera and a partial discharge (PD) monitor to observe the motion, PD, and breakdown of these particles. The probabilities of standing or bouncing, which can be affected by the length of the particles, were also quantitatively examined. The corona images of the particles were recorded, and particle-triggered PD signals were monitored and extracted. Breakdown images were also obtained. The air-gap breakdown with the particles was subjected to mechanism analysis on the basis of stream theory. Results reveal that the lifting voltage of the wire particles is almost irrelevant to their length but is proportional to the square root of their radius. Short particles correspond to high bouncing probability. The intensity and frequency of PD and the micro-discharge gap increase as the length of the particles increases. The breakdown voltage decreases as the length of the particles decreases.

show abstract

Section: Introductionmentioning

confidence: 99%