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首页> 外文期刊>電気学会論文誌 A:基礎.材料.共通部門誌 >Effects of Elliptical Nature of Rotating Electric Field on Partial Discharge Pattern in a Three-phase Construction
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Effects of Elliptical Nature of Rotating Electric Field on Partial Discharge Pattern in a Three-phase Construction

机译：三相结构中旋转电场的椭圆性质对局部放电模式的影响

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摘要

Discharge characteristics in single-phase equipment are a well-known and well-established art, however, those in three-phase equipment are far less understood. Because the electric field in the insulating material of three-phase equipment is not linear, but rotates with power frequency, it can be expected that the discharge characteristics in three-phase equipment will be different from those in single-phase equipment. In this paper, the effects of rotating electric field on partial discharge pattern in a three-phase construction are reported. The simplified model of a three-phase GIS with air inside is used. The electric field in the construction was analyzed, and the discharge characteristics were observed. The electric field vector locus in a three-phase construction is elliptical, although the shape differs locally. The elliptical nature of rotating electric field is expressed as an electric field ratio. The experimental results showed that the phase widths where partial discharge current pulses appeared were different depending on the electric field ratio even for the same applied voltage. The phase width where partial discharge current pulses appeared was also influenced by the applied electric field. These results are analysed from the relationship between the value and the locus of the applied electric field and the critical electric field of air.
机译：单相设备中的放电特性是公知的并且已经建立的技术，但是，三相设备中的放电特性却远远不够。由于三相设备绝缘材料中的电场不是线性的，而是随工频旋转的，因此可以预期，三相设备中的放电特性将与单相设备中的不同。本文报道了三相电场中旋转电场对局部放电模式的影响。使用内部有空气的三相GIS的简化模型。分析建筑中的电场，并观察放电特性。三相结构中的电场矢量轨迹是椭圆形的，尽管形状局部不同。旋转电场的椭圆性质表示为电场比。实验结果表明，即使施加相同的电压，局部放电电流脉冲出现的相宽度也根据电场比而不同。局部放电电流脉冲出现的相宽也受到所施加电场的影响。从施加电场的值和轨迹与空气的临界电场之间的关系分析了这些结果。

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