Local Aging Diagnosis of XLPE Cables Using High Voltage Frequency Domain Dielectric Spectroscopy

被引：0
|
作者：
Wang H. [1 ,2 ]
Li C. [1 ,2 ]
Wang W. [1 ,2 ]
Wang X. [1 ,2 ]
Xu Q. [1 ,2 ]
机构：
[1] Beijing Key Laboratory of High Voltage and Electromagnetic Compatibility, North China Electric Power University, Beijing
[2] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2022年 / 37卷 / 06期
关键词：
Aging; Cross-linked polyethylene; Diagnosis; High voltage frequency domain spectroscopy;
D O I：
10.19595/j.cnki.1000-6753.tces.201093
中图分类号：
学科分类号：
摘要：
Water tree aging are important reasons for the degradation of XLPE cable insulation. The timely detection and treatment of those aging defects are of great significance for system operation safety. Although very-low frequency (VLF, 0.1Hz) dielectric loss detection is widely used for the cable aging detection, it has low sensitivity for local defects and cannot distinguish the aging defects types. In this paper, high voltage frequency-domain spectroscopy (FDS) is carried out to diagnose XLPE cable insulation aging defects. Through the accelerated aging experiment, the water tree aging and thermal aging defective cable segments are prepared. Then the high-voltage dielectric spectroscopy (0.01~0.1Hz) under different voltage levels is detected on the 27.4m long 10kV cable before and after local aging. The dielectric parameters, layering degree S and the hysteresis degree D of FDS curve, are defined and analyzed. The FDS results are also compared with the VLF (0.1Hz) dielectric loss detection. The results show that the VLF method is difficult to find local thermal aging and 70% water tree penetration defects, while the high-voltage FDS is sensitive to local thermal aging and local water tree aging defects. It is found that the layering degree S of thermal aging and water tree aging samples is greater than 1, which can be used as the criterion of cable aging; the hysteresis degree D of the water tree aging sample is significantly greater than that of the thermal aging sample, which can be used as a characteristic quantity to distinguish thermal aging and water tree aging of XLPE cables. © 2022, Electrical Technology Press Co. Ltd. All right reserved.
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页码：1542 / 1553
页数：11
相关论文
共 34 条
  • [1] (2011)
  • [2] Wu Mingxiang, Ouyang Benhong, Li Wenjie, Common faults and cause analysis of XLPE cable, Electric Power, 46, 5, pp. 66-70, (2013)
  • [3] Heinhold L., (2001)
  • [4] Zhou Kai, Li Shiyu, Yin You, Et al., Analysis of aging characteristics of medium voltage XLPE and EPR retired cables, Transactions of China Electro-technical Society, 35, 24, pp. 5197-5206, (2020)
  • [5] Huang Guanglei, Li Zhe, Yang Fengyuan, Et al., Experimental research on leakage current of DC cross linked polyethylene cable, Transactions of China Electrotechnical Society, 34, 1, pp. 192-201, (2019)
  • [6] Yang Lijun, Li Zhongxuan, Yao Renyun, Et al., Selection of step-stress test parameters for obtaining DC voltage endurance coefficient of XLPE insu-lation, Transactions of China Electrotechnical Society, 34, 24, pp. 5244-5251, (2019)
  • [7] Perkel J, Valle Y D, Hampton R N, Et al., Interpretation of dielectric loss data on service aged polyethylene based power cable systems using VLF test methods, IEEE Transactions on Dielectrics and Electrical Insulation, 20, 5, pp. 1699-1711, (2013)
  • [8] Zaengl W S., Dielectric spectroscopy in time and frequency domain for HV power equipment. I. theoretical considerations, IEEE Electrical Insu-lation Magazine, 19, 5, pp. 5-19, (2003)
  • [9] Zhang Daning, Liu Xiaowei, Zhan Jiangyang, Et al., Analysis of imaginary part of frequency domain spectroscopy for oil paper insulation transformer, Transactions of China Electrotechnical Society, 34, 4, pp. 847-854, (2019)
  • [10] Given M J, Fouracre R A, MacGregor S J, Et al., Diagnostic dielectric spectroscopy methods applied to water-treed cable, IEEE Transactions on Diele-ctrics and Electrical Insulation, 8, 6, pp. 917-920, (2001)
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