Estimation of the temperature rise in cylindrical conductors subjected to heavy 10/350 μs lightning current impulses
Estimation of the temperature rise in cylindrical conductors subjected to heavy 10/350 μs lightning current impulses
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DOI：
10.1016/j.epsr.2007.01.002
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发表时间：
2008
影响因子：
3.9
通讯作者：
M. P. Paisios;C. Karagiannopoulos;P. Bourkas
中科院分区：
文献类型：
--
作者：
M. P. Paisios;C. Karagiannopoulos;P. Bourkas
闪电是一种能量非常高的现象，它会对人类和环境造成严重的危险。虽然在防雷领域取得了很大进展，但仍有许多由闪电和电力及电信系统中断引起的火灾。本文对10/350μs强雷电流冲击下圆柱形导体的温升进行了实验和数学研究。温升测量在欧洲最可靠的实验室之一（BET，Menden，德国）进行。所提出的数学模型用于估计圆柱形导体的温升，假设均匀和不均匀的电流密度分布，考虑到瞬态集肤效应。此外，还对数学结果进行了验证.并对今后的研究提出了建议。实验结果与数学模型的计算结果一致。它令人信服地表明，铜导体可以通过瞬态集肤效应的影响。然而，由瞬态集肤效应引起的附加温升是最小的，并且可以忽略。
Lightning is a very high-energy phenomenon, which can pose serious dangers for human beings and the environment. Although much progress has been made in the area of lightning protection, there are still many cases of fires caused by lightning and power and telecommunication system outages. We have carried out an experimental and mathematical investigation into the temperature rise in cylindrical conductors subjected to heavy 10/350μs lightning current impulses. The temperature rise measurements took place in one of the most reliable laboratories in Europe (BET, Menden, in Germany). The proposed mathematical models used to estimate the temperature rise in cylindrical conductors assumed both a uniform and non-uniform current density distribution by taking into account the transient skin effect. In addition, verification of the mathematical results were studied. Suggestions for further investigations are also provided. The experimental results are consistent with the results from the mathematical models. It is convincingly shown that copper conductors can be influenced by the transient skin effect. The additional temperature rise however, caused by the transient skin effect, is minimal, and can be neglected.