表面放电时电荷诱导电场畸变和电荷参与中和的竞争机制

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-11-12 DOI:10.1063/5.0232293

Boya Zhang, Yixuan Li, Haifei Tao, Jie Li, Kaixuan Li, Xingwen Li

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引用次数: 0

摘要

电荷引起的表面放电对高压直流气体绝缘设备和脉冲功率系统的运行可靠性构成严重威胁。在这项研究中，我们通过在两个电介质层上分别沉积电荷点，研究了电荷引起的电场畸变和电荷参与表面放电的影响。结果表明，沉积的正电荷会抑制正流线的发展，而负电荷则会促进正流线的发展，这主要是由于沉积电荷引起了电场畸变。然而，沉积电荷在流线发展中的参与主要表现出一种中和效应，对流线产生相反的影响。这凸显了沉积电荷参与和电场畸变之间的竞争关系。此外，沉积电荷与电子雪崩的中和作用降低了电荷引起的电场畸变的影响，从而减轻了电场畸变对放电的影响。

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Competing mechanisms of charge-induced electric field distortion and charge-involved neutralization on surface discharge

Charge-induced surface discharge poses a critical risk to the operational reliability of high-voltage direct current gas-insulated equipment and pulsed power system. In this study, we investigate the effects of charge-induced electric field distortion and charge involvement during surface discharge by separately depositing charge spots on two dielectric layers. The results show that deposited positive charges inhibit positive streamer development, whereas negative charges facilitate it, primarily due to electric field distortion induced by deposited charges. Nevertheless, the involvement of deposited charges in streamer development predominantly exhibits a neutralizing effect, exerting an opposite influence on the streamers. This highlights a competitive relationship between deposited charge involvement and electric field distortion. Additionally, the neutralization of deposited charges with electron avalanches reduces the impact of charge-induced electric field distortion, thereby mitigating its effects on discharge.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.