两点键合屏蔽电缆线路磁场屏蔽系数的解析计算

2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) Pub Date : 2018-07-01 DOI:10.1109/MMET.2018.8460425

V. Rozov, V. Grinchenko, O. Tkachenko, A. Yerisov

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引用次数: 5

摘要

本文建立了具有两点键合屏蔽的高压三相电缆线路磁场的解析模型。假定电缆线路由三根单芯交联聚乙烯绝缘电缆组成。所提出的解析模型可以计算电缆屏蔽层内的感应电流，并确定任意布置电缆时的磁场分布。得到了带两点键合屏蔽的三叶草电缆线磁场屏蔽系数的精确紧凑表达式。得到了带两点键合屏蔽的扁平电缆线路磁场屏蔽系数的简化紧凑表达式。结果表明，简化表达式与精确解析表达式及实验结果的差异在4%以内。

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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Analytical Calculation of Magnetic Field Shielding Factor for Cable Line with Two-Point Bonded Shields

In this paper we present an analytical model of the magnetic field of a high-voltage three-phase cable line with two-point bonded shields. The cable line is assumed to consist of three single-core XLPE insulated cables. The represented analytical model allows to calculate the electric currents induced in shields of cables and to determine the magnetic field distribution for the arbitrary layout of cables. We obtain an exact compact expression for the magnetic field shielding factor for the trefoil cable line with two-point bonded shields. Also we obtain a simplified compact expression for the magnetic field shielding factor for the flat cable line with two-point bonded shields. We show that the difference of the simplified expression with the exact analytical expression and experimental results is within 4 %.

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来源期刊

2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)

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