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首页> 外文期刊>Electric power systems research >Measurement and assessment of corona current density for HVDC bundle conductors by FDM integrated with full multigrid technique
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Measurement and assessment of corona current density for HVDC bundle conductors by FDM integrated with full multigrid technique

机译：通过FDM与全多重技术集成FDM对HVDC束导体电晕电流密度的测量和评估

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摘要

This paper presents an intensive measurement and analysis of monopolar ionized fields in bundled high voltage direct current (HVDC) conductors using the finite difference method based on the full multigrid technique. The positive feature of this study is that it considers the comprehensive representation of the bundle conductor, unlike the existing studies that approximate the bundle conductor with an equivalent conductor radius. Firstly, the proposed method is compared with previous experimental results. Secondly, a flexible laboratory model for the bundled HVDC conductors is constructed. Thirdly, the laboratory model is exploited to validate the numerically computed current density distribution on the ground plane and corona current for different bundles' numbers and different distances between bundles. Bundles of one, two, and four conductors are adopted in the experimental setup. For the same applied voltage, the results verified that the corona current decreases by increasing the bundles' number and/or minimizing the spacing between bundles. Consequently, the obtained results confirmed that corona power losses can be minimized, without needing the traditional procedures that involve increasing either the conductor radius or its height above the ground. The results of the proposed numerical approach concurred well with the present and past laboratory results.
机译：本文采用了基于全多重技术的有限差分法，捆绑高压直流（HVDC）导体中的单极电离场的密集测量和分析。本研究的正面特征是它认为束导体的综合表示，与近似束导体具有等效导体半径的现有研究。首先，将所提出的方法与先前的实验结果进行比较。其次，构造了捆绑HVDC导体的柔性实验室模型。第三，利用实验室模型来验证地面平面上的数值计算的电流密度分布，而不同的捆绑的数量和捆绑之间的不同距离。在实验设置中采用了一个，两个和四个导体的束。对于相同的施加电压，结果验证了电晕电流通过增加捆绑的数量和/或最小化捆绑之间的间隔来减小。因此，所获得的结果证实可以最小化电晕功率损耗，而无需涉及将导体半径或其高于地面上方的高度增加的传统程序。拟议的数值方法的结果与现在和过去的实验室结果很好。

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  • 来源
    《Electric power systems research》 |2021年第10期|107370.1-107370.9|共9页
  • 作者

    Abouelatta Mohamed A.; Ward Sayed A.; Sayed Ahmad M.; Mahmoud Karar; Lehtonen Matti; Darwish Mohamed M. F.;

  • 作者单位

    Benha Univ Fac Engn Shoubra Dept Elect Engn Cairo 11629 Egypt;

    Benha Univ Fac Engn Shoubra Dept Elect Engn Cairo 11629 Egypt|Delta Univ Sci & Technol Fac Engn Mansoura 11152 Egypt;

    Benha Univ Fac Engn Shoubra Dept Elect Engn Cairo 11629 Egypt;

    Aswan Univ Fac Engn Dept Elect Engn Aswan 81542 Egypt|Aalto Univ Sch Elect Engn Dept Elect Engn & Automat FI-00076 Espoo Finland;

    Aalto Univ Sch Elect Engn Dept Elect Engn & Automat FI-00076 Espoo Finland;

    Benha Univ Fac Engn Shoubra Dept Elect Engn Cairo 11629 Egypt|Aalto Univ Sch Elect Engn Dept Elect Engn & Automat FI-00076 Espoo Finland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    HVDC Bundle transmission; Finite difference method; Full multigrid method; Corona losses;

    机译：HVDC捆绑传输;有限差分法;完全多重型方法;电晕损失;

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