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首页> 外文期刊>Generation, Transmission & Distribution, IET >Experimental analysis of the strands breaking characteristics of optical fibre composite overhead ground wire due to simulating lightning strike
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Experimental analysis of the strands breaking characteristics of optical fibre composite overhead ground wire due to simulating lightning strike

机译：模拟雷击引起的光纤复合架空接地线股线的实验分析

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摘要

With the increasing application of OPGW (optical fibre composite overhead ground wire) in power systems, the strands in OPGW are frequently broken due to lightning strikes. In this study, ten kinds of OPGW lightning-strike tolerance was tested according to the IEC standards. The influences of the following factors, such as transfer charge, tensile force, the diameter and material of OPGW outer layer strands, were analysed. The transfer charge and tensile force are positively proportional to the degree of lightning strike damage to OPGW. The diameters of OPGW outer layer strands are positively related to the lightning strike tolerance of OPGW. Compared with OPGW with aluminium alloy outer layer strands, lightning strikes tolerance of OPGW with aluminium clad steel (AS) outer layer strands is better. It suggested that the OPGW outer layer strands diameter >3.2 mm and with AS outer-layer strands shows good lightning strike tolerance. The mechanism of OPGW strands breaking was also analysed by the infrared detection, micro-morphology detection and energy spectrum. The experimental results of this study provide significant data support for OPGW type selection for lightning protection.
机译：随着OPGW（光纤复合架空接地线）在动力系统中越来越多的应用，由于雷击，OPGW中的股线经常被打破。在这项研究中，根据IEC标准测试了10种OPGW闪电容差。分析了以下因素的影响，例如转移电荷，拉伸力，OPGW外层股线的直径和材料。转移电荷和拉伸力与OPGW的雷击损坏程度正成比例。 OPGW外层股线的直径与OPGW的雷击容差正相关。与铝合金外层股线的OPGW相比，用铝包覆钢（AS）外层股线的OPGW耐光敏锐敏锐。它建议，OPGW外层股线直径> 3.2mm，用外层股线显示出良好的雷击抗击性耐受性。通过红外检测，微观形态检测和能谱，还分析了OPGW链破碎机制。该研究的实验结果为防雷的OPGW型选择提供了显着的数据支持。

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