基于射频识别的配电网交联聚乙烯电缆绝缘老化诊断与缺陷定位

IF 0.7 4区 材料科学 Q3 Materials Science
Chenggang Li, Zhaojie Chu, Liang Zhang, Jianguo Zhang, Jiagui Tao
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引用次数: 0

摘要

随着电网建设规模的扩大,对各种设备的监管要求越来越高。此外,配电网的安全稳定运行在整个电力系统中起着至关重要的作用。特别是DNs中的电缆在长期运行过程中,受电、热等多种因素的影响,容易发生老化。因此,对其运行状态进行有效的诊断是必要的。交联聚乙烯(XLPE)是电力系统中广泛使用的主要电缆绝缘材料。在本研究中,比较了交联聚乙烯电缆成型工艺的微观和宏观性能。采用无线射频识别(RFID)技术对网络中XLPE电缆进行老化诊断和缺陷定位。试验结果表明,悬挂链式交联电缆和塔式交联电缆的平均绝缘交联度分别为88.93%和87.98%。悬浮链式交联聚乙烯电缆的绝缘熔融温度约为110℃,结晶温度约为92℃,结晶度约为36.5%。塔式交联聚乙烯电缆的绝缘熔融温度约为105℃,结晶温度约为88℃,结晶度约为34%。利用无线RFID技术,可以实现XLPE电缆局部老化和绝缘损伤缺陷的精确定位。利用电缆高频相位谱定位电缆缺陷的误差小于0.5 m。因此,研究交联聚乙烯电缆的制作工艺对其绝缘层的物理化学性能有着重要的影响。利用无线射频识别技术对电缆进行检测,为电力系统的安全运行提供了保障。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Insulation aging diagnosis and defect location of crosslinked polyethylene cable in the distribution network based on radio frequency identification
With the expansion of power grid construction, the regulatory requirements of various equipment are increasing. Further, the safe and stable operation of the distribution network plays a crucial role in the entire power system. In particular, the cables in DNs are prone to aging during long-term operation due to various factors, such as electricity and heat. Therefore, the effective diagnosis of their operating status is necessary. Crosslinked polyethylene (XLPE) is widely used as the main insulation material for cables in power systems. In this study, the microscale and macroscale performance of the molding process of XLPE cables were compared. Wireless radio frequency identification (RFID) technology was used to diagnose the aging and locate the defects of XLPE cables in the DN. The experiment noted the average insulation crosslinking degree of 88.93% and 87.98% for the suspension chain- and tower-type XLPE cables, respectively. The insulation-melting and crystallization temperatures of the suspension chain-type XLPE cable were approximately 110 °C and 92 °C, respectively, and the crystallinity was approximately 36.5%. The insulation-melting and crystallization temperatures of the tower-type XLPE cable were approximately 105 °C and 88 °C, respectively, and the crystallinity was approximately 34%. Using the wireless RFID technology, the precise positioning of the local aging and insulation damage defects in XLPE cables can be achieved. The error in locating the cable defects using the high-frequency phase spectrum of the cable was less than 0.5 m. Therefore, the study on the manufacture of XLPE cables has significant impact on the physical and chemical properties of their insulation layer. Further, the cable inspection using the wireless RFID technology provides a guarantee on the safe operation of the power system.
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来源期刊
Materials Express
Materials Express NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY
自引率
0.00%
发文量
69
审稿时长
>12 weeks
期刊介绍: Information not localized
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