High Power <i>X</i>-Band Monolithic GaAs p-i-n Balanced Limiter

Li, Shifeng; Wang, Leiyang; Wu, Bang Ye; Guo, Dingyi; Li, Yunfan; Zhao, Yifei; Cheng, Gary J.; Liu, Feng

doi:10.1109/tpel.2022.3232612

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…The Pockels effect has been developed and applied in various scenarios, including electric field probe sensors [43,44], partial discharges [45], dielectric barrier discharges (DBDs) [46], atmospheric pressure plasma jets (APPJs) [42], and gas-solid [47] and solid-solid [48,49] interface discharges. Recently, Wang et al realized in-situ observation of nanosecond surface charge evolution during surface discharge streamer using this method [50].…”

Section: Pockels Effectmentioning

confidence: 99%

“…In offline measurements by Kelvin probe, this algorithm has exhibited satisfactory accuracy in determining charge density at the divider point of a streamer-toleader transition, as well as providing quantitative features of both surface streamers and leaders [63]. Additionally, the algorithm is widely implemented for in-situ monitoring of surface discharge through Pockels effects systems [47,49]. Furthermore, some advances have been made to improve the inversion algorithm.…”

Section: Shift-variant Systemmentioning

confidence: 99%

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Insight into charge-induced flashover at the gas–solid interface in DC gas-insulated systems

Zhang,

Li,

Min

et al. 2023

J. Phys. D: Appl. Phys.

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The proliferation of urbanization and the integration of new energy sources have stimulated the development of gas-insulated transmission lines and switchgear (GIL/GIS). In particular, the compact DC GIS in offshore converter platforms will significantly reduce footprints for DC switchyards, exhibit exceptional climatic resistance, and facilitate the cost-effective connection of remote offshore wind farms and submarine links. Nevertheless, insulators used in GIS/GIL always suffer from surface charge accumulation under DC stress, which could distort and enhance the local electric field and thus trigger a flashover at the gas-solid interface if it exceeds certain magnitude levels. This susceptibility becomes a major concern affecting the reliability of DC gas-insulated systems. Beyond these engineering-related challenges lie fundamental physics problems involving mechanisms of charge accumulation and charge-induced flashover which still require exploration. To this end, this paper presents an overview of recent advancements on this topic whilst highlighting relevant issues to be addressed. Specifically, the surface charge accumulation phenomena under DC fields are reviewed, and the charging mechanisms are summarized from macroscopic to microscopic perspectives. Further, the correlation between surface charge and surface flashover is discussed. Moreover, recent developments in tailoring methods for surface charging are also presented. Finally, perspectives are given on current research progress and future needs.

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