Accurate modelling of field stresses in an unshielded three-core power cable

H.M. Ismail

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Accurate modelling of field stresses in an unshielded three-core power cable

机译：非屏蔽三芯电力电缆中场应力的精确建模

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This paper uses the charge simulation technique to calculate the potential and electric field stress distribution at the surfaces of the conductors and the dielectric of an unshielded three-core power cable. The conductors and the sheath are simulated by a suitable finite number of complex line charges. The unshielded three-core cable is placed on a grounded plane and at varying heights above it to calculate the electric field as a function of the height of the insulated cable from the ground. The maximum value of the electric field stress at the grounded plane due to the presence of the insulated three-core cable is detected to check the discharge activities at the grounded plane surface. Comparison is made with field stresses arising from a single-core unshielded insulated cable which are given in the literature. The charge simulation technique is found to be satisfactory to model and calculate accurately the field stresses in a three-core unshielded power cable.

机译：本文使用电荷模拟技术来计算非屏蔽三芯电力电缆的导体和电介质表面的电势和电场应力分布。通过适当数量的复数线电荷来模拟导体和护套。非屏蔽三芯电缆放置在接地平面上，并在其上方不同高度处，以计算电场作为绝缘电缆距地面高度的函数。检测由于存在绝缘三芯电缆而导致的接地平面处的电场应力最大值，以检查接地平面表面的放电活动。与文献中给出的单芯非屏蔽绝缘电缆产生的场应力进行了比较。发现电荷模拟技术可以令人满意地建模和准确计算三芯非屏蔽电力电缆中的场应力。

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来源
《Electric power systems research》 |1996年第3期|p.217-221|共5页
作者
H.M. Ismail;
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作者单位

Electrical Power and Machines Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt;

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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
中图分类理论与分析;发电、发电厂;
关键词
unshielded conductors; power cables; electric field calculations; charge simulation method; discharge activities;

机译：非屏蔽导体;电力电缆;电场计算;电荷模拟方法;放电活动;

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1. Methods of Calculations of Field Stresses in a Three-Core Power Cable [J] . Salama M. M. A., Hackam R., Nosseir A., Power Engineering Review, IEEE . 1984,第12期

机译：三芯电力电缆中场应力的计算方法
2. Electrical and Mechanical Condition Assessment of Low Voltage Unshielded Nuclear Power Cables Under Simultaneous Thermal and Mechanical Stresses: Application of Non-Destructive Test Techniques [J] . Ramy S. A. Afia, Mustafa Ehtasham, Zoltán Ádám Tamus Quality Control, Transactions . 2021,第1期

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3. Energization-Status Identification of Three-Phase Three-Core Shielded Distribution Power Cables Based on Non-Destructive Magnetic Field Sensing [J] . Ke Zhu, Wing Kin Lee, Philip W. T. Pong Sensors Journal, IEEE . 2017,第22期

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4. Non-invasive energy harvesting for wireless sensors from electromagnetic fields around 10kV three-core power cables [C] . Xiangfeng Zeng, Baojie Li, Hongjie Li, 2017 1st International Conference on Electrical Materials and Power Equipment . 2017

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5. Impact of unshielded twisted pair cable on ultra-wideband. [D] . Kulkarni, Kalyani G. 2004

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6. Modeling Magnetic Fields from a DC Power Cable Buried Beneath San Francisco Bay Based on Empirical Measurements [O] . Robert Kavet, Megan T. Wyman, A. Peter Klimley -1

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Accurate modelling of field stresses in an unshielded three-core power cable

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