固定多颗粒电极结构中的空气绝缘特性和放电机制

IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Electrical Engineering & Technology Pub Date : 2024-08-07 DOI:10.1007/s42835-024-02000-9
Dong-Young Lim, Hoyong Joo, Seung-Wook Jee
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引用次数: 0

摘要

导电颗粒产生的高电场会大大降低空气绝缘的强度。因此,了解导电粒子对空气绝缘特性的影响对于确保基于空气绝缘的电力设施的运行和稳定性至关重要。本文旨在提供相关知识,以了解导电粒子导致的击穿过程。本文介绍了带有固定多个导电粒子的电极结构中空气的绝缘特性,并提出了基于电晕放电机理的击穿发展模型。通过改变电极间隙和使用几种固定多粒子排列方式,对大气空气中的交流击穿进行了实验。有趣的是,固定单颗粒和多颗粒电极结构的空气击穿电压几乎相等。为了解击穿过程,我们测量了电晕发展过程中的电流波形。与多颗粒相关的电晕放电首先出现在施加电压的正周期。根据外加电压正负周期的电子产生机制,提出了包含这种电晕特征的击穿发展模型。
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Air Insulation Characteristics and Discharge Mechanism in Electrode Structure with Fixed Multiple Particles

The high electric field generated by conductive particles significantly reduces the strength of air insulation. Thus, understanding the effects of conductive particles on the insulation characteristics of air is essential to ensure the operation and stability of a power facility based on air insulation. The purpose of this paper is to provide knowledge to understand the breakdown process caused by conductive particles. This paper presents the insulation characteristics of air in an electrode structure with fixed-multiple conductive particles, and proposes a breakdown development model based on the corona discharge mechanism. Experiments on ac breakdown in atmospheric air were conducted by varying the electrode gap and by using several types of fixed-multiple particle arrangements. It is interesting that the breakdown voltages of air were almost equal for the electrode structures with fixed-single and multiple particles. For understanding the breakdown process, the current waveforms were measured during the corona development. Corona discharges associated with multiple particles are first observed in the positive period of the applied voltage. The breakdown development model including this corona characteristics was proposed based on the electron generation mechanism during the positive and negative period of the applied voltage.

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来源期刊
Journal of Electrical Engineering & Technology
Journal of Electrical Engineering & Technology ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
4.00
自引率
15.80%
发文量
321
审稿时长
3.8 months
期刊介绍: ournal of Electrical Engineering and Technology (JEET), which is the official publication of the Korean Institute of Electrical Engineers (KIEE) being published bimonthly, released the first issue in March 2006.The journal is open to submission from scholars and experts in the wide areas of electrical engineering technologies. The scope of the journal includes all issues in the field of Electrical Engineering and Technology. Included are techniques for electrical power engineering, electrical machinery and energy conversion systems, electrophysics and applications, information and controls.
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