Electric Field Simulation of Permittivity and Conductivity Graded Materials (ε/σ-FGM) for HVDC GIS Spacers
Electric Field Simulation of Permittivity and Conductivity Graded Materials (ε/σ-FGM) for HVDC GIS Spacers
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HVDC GIS 间隔件的介电常数和电导率梯度材料 (ε/σ-FGM) 的电场仿真
DOI：
10.1109/tdei.2020.009343
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发表时间：
2021
影响因子：
3.1
通讯作者：
Nabila Zebouchi
中科院分区：
文献类型：
--
作者：
Rachmawati;Hiroki Kojima;Naoki Hayakawa;Katsumi Kato;Nabila Zebouchi
本文讨论了一种新的技术-功能梯度材料（FGM）的应用，它结合了空间介电常数（ε）和电导率（σ）的分布，目的是控制DC GIS间隔棒周围的电场。通过电场模拟研究了间隔体中ε和/或σ的一些分布类型，如U型和梯度向更高电导率（GHC）的变化，并与具有恒定ε和σ分布的均匀间隔体进行了比较。得到了各种分布类型的ε/σ-FGM在直流稳态、直流极性反转、直流导通以及直流稳态叠加雷电冲击电压下的电场弛豫效应。结果表明，具有U型介电常数和GHC型电导率分布的ε/σ-FGM在所有条件下对降低最大电场最有效，其中低σ分布在DC-GIS隔板的高压侧附近。
This paper discusses the application of the novel technology - functionally graded material (FGM), which combines both spatial permittivity (ε) and conductivity (σ) distributions with the aim to control the electric field around DC-GIS spacer. Some distribution types of ε and/or σ in the spacer bulk, such as U-type and graded to higher conductivity (GHC) are investigated through electric field simulation, in comparison to the uniform spacer with constant ε and σ distributions. The electric field relaxation effect of each distribution type of ε/σ-FGM under DC steady state, DC polarity reversal, DC-on, and lightning impulse voltage superimposed on DC steady state condition are obtained. The results show that ε/σ-FGM with U-type permittivity and GHC-type conductivity distribution of which low σ is applied near the high voltage side of the DC-GIS spacer is the most effective in reducing the maximum electric field under all stated conditions.