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首页> 外文会议>2014 International Conference on Electrical Sciences and Technologies in Maghreb >Characterization of laboratory aged MV XLPE cables using dielectric losses factor measurements
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Characterization of laboratory aged MV XLPE cables using dielectric losses factor measurements

机译：使用介电损耗因子测量来表征实验室老化的MV XLPE电缆

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摘要

This paper analyses characterization results of Dielectric losses factor experiments performed on laboratory-aged and non-aged 18/30 kV XLPE insulated Medium Voltage (MV) cable samples. Dielectric losses factor was used to characterize and assess, according to IEEE and IEC standards, the state of the investigated cables insulation under electrical and thermal accelerated aging. For this purpose, full size of MV 18/30 (36) kV XLPE cable samples were aged under electrical stress at three levels of voltage (18 kV, 36 kV and 54 kV) during 2000 hours. Under thermal aging conditions, continuous and load cycling tests were carried out at four different temperatures ranging from 80°C to 140°C during 2000 hours and 20 thermal cycles of 8 hours current on and 16 hours current off, respectively. Results showing the evolution of the dissipation factor and the dielectric losses power versus electrical stress are presented and discussed.
机译：本文分析了在实验室老化和非老化的18/30 kV XLPE绝缘中压（MV）电缆样品上进行的介电损耗因子实验的表征结果。根据IEEE和IEC标准，使用介电损耗因数来表征和评估所研究的电缆在电和热加速老化下的绝缘状态。为此，在2000小时内，将三种尺寸的MV 18/30（36）kV XLPE电缆样品在三种电压等级（18 kV，36 kV和54 kV）的电应力下老化。在热老化条件下，在2000小时和20个热循环中分别在80°C至140°C的四个不同温度下进行了连续和负载循环测试，分别有8小时通电和16小时通电。给出并讨论了显示耗散因数和介电损耗功率与电应力的关系的结果。

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