基于太赫兹脉冲和成像的配电网电缆探测

IF 0.9 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Russian Journal of Nondestructive Testing Pub Date : 2024-07-27 DOI:10.1134/S1061830923601472
Guowei Li, Siming Zeng, Qing Wang, Zhenwei Zhang
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引用次数: 0

摘要

摘要 高压配网电缆受潮会造成重大安全隐患,但目前还没有有效的手段来检测和分析电缆内部的潮湿状态。因此,开发一种新的无损检测方法来评估配电网络电缆及其接头的防水性能迫在眉睫。电缆的内部结构是由导线、交联聚乙烯绝缘层和硅橡胶绝缘护套组成的多层结构。我们利用反射式太赫兹脉冲信号检测电缆的内部状态,并根据回波特征判断电缆是否含有水渍。此外,还通过圆柱坐标扫描获得了三维数据,并根据特征信息重建了太赫兹图像,结果与电缆绝缘护套和交联聚乙烯绝缘层之间的水渍分布一致。结果表明,太赫兹技术可以实现对电缆潮湿状态的高灵敏度检测,这在电力和输电行业具有重要意义。
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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Distribution Network Cable Detection Based on Terahertz Pulse and Imaging

Moisture of high voltage distribution network cables will cause major safety hazard, but there is no effective means to detect and analyze the internal humidity state of the cables. Therefore, it is urgent to develop a new nondestructive detection method to evaluate the waterproof performance of distribution network cables and their connectors. The internal structure of the cable is a multilayer structure composed of wires, cross-linked polyethylene insulation layer, and silicone rubber insulation sheath. We used the reflective terahertz pulse signal to detect the internal states of the cable, and judge whether it contains water stains according to the echo characteristics. In addition, three-dimensional data was obtained through cylindrical coordinate scanning and terahertz images were reconstructed based on feature information, which were consistent with the distribution of water stains between the cable insulation sheath and cross-linked polyethylene insulation layer. The results show that the terahertz technology can realize the high sensitivity detection of cable moisture state, which is of great significance in the power and transmission industry.

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来源期刊
Russian Journal of Nondestructive Testing
Russian Journal of Nondestructive Testing 工程技术-材料科学:表征与测试
CiteScore
1.60
自引率
44.40%
发文量
59
审稿时长
6-12 weeks
期刊介绍: Russian Journal of Nondestructive Testing, a translation of Defectoskopiya, is a publication of the Russian Academy of Sciences. This publication offers current Russian research on the theory and technology of nondestructive testing of materials and components. It describes laboratory and industrial investigations of devices and instrumentation and provides reviews of new equipment developed for series manufacture. Articles cover all physical methods of nondestructive testing, including magnetic and electrical; ultrasonic; X-ray and Y-ray; capillary; liquid (color luminescence), and radio (for materials of low conductivity).
期刊最新文献
Erratum to: Analysis of Weak Signal Detection Based on Tri-Stable System under Poisson White Noise Nondestructive Detection of Wire Rope Damage Using Leakage Magnetic Technique based on Dual-Layer Sensors Erratum to: Solid Particle Erosion Behaviour of Laser Sintered Heat Treated Ti–6Al–4V Alloy Enhanced Electromagnetic Near Field Probe for Diagnosis and Materials Characterization Some Cases of Explicit Expression of the Intensity of the Resulting Field of Magnets Placed in the Field of External Sources
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