SF6气体中电极/环氧界面小间隙局部放电特性

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI:10.1109/CEIDP.2008.4772884

D. Mansour, H. Kojima, N. Hayakawa, F. Endo, H. Okubo

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引用次数: 6

摘要

为了实现气体绝缘开关设备(GISs)的安全运行，电气绝缘的可靠性是至关重要的基础之一。在这方面，迫切需要更好地了解GIS中不同位置的局部放电机制。本文研究了不同间隙长度(50~500 μ m)下，GIS中最关键的缺陷之一——绝缘隔层电极/环氧树脂界面的PD初始化特性。对SF6气体中局部放电起始电压(PDIV)和电场(PDIE)的起始机理进行了测量和分析。从环氧树脂表面电荷积累的角度出发，讨论了PDIV与脉冲重复次数的关系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Partial Discharge Characteristics for Small Gap of Electrode/Epoxy Interface in SF6 Gas

To achieve a safe operation of gas insulated switchgears (GISs), the reliability of electrical insulation is one of the fundamental importance. For this respect, there is an urgent need for better understanding of partial discharge (PD) mechanisms at different locations in GIS. In the current work, the PD inception characteristics at electrode/epoxy interface at insulating spacer in GIS, which represents one of the most critical defects in GIS, are obtained and investigated with different gap lengths, 50~500 mum. Partial discharge inception voltage (PDIV) and electric field (PDIE) are measured and analyzed regarding PD inception mechanism in SF6 gas. Also the dependence of PDIV on repetitive number of PD pulses is obtained and discussed from the viewpoint of accumulated charge on the epoxy surface.

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2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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