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首页> 外文会议>55th IWCS/Focus~TM Conference >Temperature Response of OPGW with Armored Aluminum Covered Steel Wires Submitted to Short-Circuit
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Temperature Response of OPGW with Armored Aluminum Covered Steel Wires Submitted to Short-Circuit

机译：带有铠装铝包钢线的OPGW的短路温度响应

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摘要

The present paper focuses on the heat transfer problem that describes the heat conduction effects in an OPGW submitted to short-circuit. An analytical solution is proposed which accounts for the effect of the temperature gradients in the aluminum covered steel wires, and the contact thermal resistance in the effective contact surface between the fiber extruded aluminum tube and the aluminum covered steel wires. The numerical results are compared with results previously obtained and reported in the 54th IWCS Conference, for an OPGW with armored steel wires with the same dimensions. The analytical solution is expressed in terms of integral equations, which can be numerically solved in terms of the heat flux, as well as the temperature of the tube and the wires. The present approach is appropriate and effective to make design parameter sensibility analysis as well as for parameter estimation of the thermal contact resistance. The numerical results reported here show that the aluminum layer of the steel wires are very effective in reducing the electrical resistance of the cable and therefore, the temperature gradients in the steel wire as well as the temperature increase in the aluminum tube.
机译：本文关注于传热问题，该问题描述了OPGW发生短路时的热传导效应。提出了一种分析解决方案，该解决方案考虑了铝包覆钢丝中的温度梯度的影响以及纤维挤压铝管与铝包覆钢丝之间的有效接触表面中的接触热阻。对于具有相同尺寸的铠装钢丝的OPGW，将数值结果与先前获得的结果进行比较并在第54届IWCS大会上进行了报道。解析解用积分方程表示，可以用热通量以及管子和电线的温度用数值方法求解。本方法适合进行设计参数敏感性分析以及热接触电阻的参数估计。此处报道的数值结果表明，钢丝的铝层在降低电缆的电阻方面非常有效，因此，钢丝中的温度梯度以及铝管中的温度升高。

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