Partial discharge (PD) in the void cavity inside the insulation of the high-voltage (HV) cable is one of the critical problems. This article describes an approach to investigate the spatial distribution of plasma species related to PD dynamics in an ellipsoid void. The plasma dynamics of this type of discharge has been simulated using a self-consistent 2-D model. The ellipsoid void has the longest diameter of 1.5 mm and the shortest diameter of 0.4 mm and it is located at 6.8 mm from the center of the HV. The results show that there are two current pulses during each cycle of the applied voltage. The current pulses were obtained at the ends of the ellipse. The results of the spatial distribution for the charged species showing that both O ₂ ⁺ and O ⁻ are a dominated species. The simulation results revealed, in later PD processes, the N ₂ ⁺ and O ⁻ start to concentrate at the concave surface of the ellipsoid ends of the void.

中文翻译：

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高压电缆绝缘内空隙腔局部放电的数值模拟

高压（HV）电缆绝缘内部空隙中的局部放电（PD）是关键问题之一。本文介绍了一种方法，用于研究与椭圆形空隙中的局部放电动力学相关的血浆物质的空间分布。已使用自洽二维模型模拟了这种放电类型的等离子体动力学。椭圆形空隙的最长直径为1.5毫米，最短直径为0.4毫米，位于距HV中心6.8毫米处。结果表明，在施加电压的每个周期中都有两个电流脉冲。在椭圆的末端获得电流脉冲。的空间分布的对带电物质表示两个O的结果 ₂ ⁺和O ^-是占主导地位的物种。仿真结果表明，在以后的PD的过程中，N ₂ ⁺和O ^-开始浓缩物在空隙的端部椭圆的凹面。