Effects of Electrical-thermal Aging on Space Charge Accumulation Characteristics at the Position of the Stress Cone in the Accessory

被引：0
|
作者：
Wang W. [1 ]
He D. [2 ]
Song P. [3 ]
Wang X. [2 ]
Meng F. [2 ]
Li Q. [2 ]
机构：
[1] Beijing Key Laboratory of High Voltage & Electronmagnetic Compatibility, North China Electric Power University, Beijing
[2] Shandong Provincial Key Laboratory of UHV Transmission Technology and Equipment, School of Electrical Engineering, Shandong University, Jinan
[3] State Grid Tianjin Electric Power Research Institute, Tianjin
来源：
Gaodianya Jishu/High Voltage Engineering | 2019年 / 45卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Accessory; Cable; Space charge; Space charge accumulation; Stress cone;
D O I：
10.13336/j.1003-6520.hve.20180424006
中图分类号：
学科分类号：
摘要：
To research the distribution of space charge at the position of the stress cone in cable, a 10 kV XLPE cable was aged under electrical-thermal stress, and the distribution characteristics of space charge in the axial and radial direction of the cable at the stress cone were tested in different aging stages by a pulse electro-acoustic method. The test results show that, in the axial direction, the position of the maximum space charge density is at the inner edge of the cable stress cone, about 2 cm, and the charge density decreases in both inner and outer axial directions. With the increase of aging time, the space charge density at the stress cone gradually increases and its distribution range extends. According to the mechanism of charge transport under AC voltage, space charge migrates from the outside to the position of the stress cone and accumulates. The study of space charge accumulation at stress cone can provide a theoretical reference for the cause analysis of cable accessory failures. It is of important practical significance and value for the improvement of cable insulation properties. © 2019, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
引用
收藏
页码：1737 / 1744
页数：7
相关论文
共 34 条
  • [1] Zhu X., Meng Z., Wang H., Et al., Dielectric properties of operated high voltage XLPE power cable, High Voltage Engineering, 41, 4, pp. 1090-1095, (2015)
  • [2] Du B., Li Z., Yang Z., Et al., Application and research progress of HVDC XLPE cables, High Voltage Engineering, 43, 2, pp. 344-354, (2017)
  • [3] Shen J., Luo J., Tang M., Et al., Analysis of explosion accident of 110 kV power cable termination, High Voltage Engineering, 31, 11, pp. 74-75, (2005)
  • [4] Liu Y., Li Y., Liu H., Et al., Grounded DC tree growth characters and propagation structure in XLPE, High Voltage Engineering, 43, 11, pp. 3551-3558, (2017)
  • [5] Montanari G.C., Bringing an insulation to failure: the role of space charge, IEEE Transactions on Dielectrics & Electrical Insulation, 18, 2, pp. 339-364, (2011)
  • [6] Dissado L.A., Mazzanti G., Montanari G.C., The role of trapped space charges in the electrical aging of insulating materials, IEEE Transactions on Dielectrics & Electrical Insulation, 4, 5, pp. 496-506, (1997)
  • [7] Li J., Liang H.C., Du B.X., Et al., Surface functional graded spacer for compact HVDC gaseous insulated system, IEEE Transactions on Dielectrics and Electrical Insulation, 26, 2, pp. 664-667, (2019)
  • [8] Zhou C., Chen G., Space charge and AC electrical breakdown strength in polyethylene, IEEE Transactions on Dielectrics and Electrical Insulation, 24, 1, pp. 559-566, (2017)
  • [9] Zhou T., Chen G., Liao R., Et al., Charge trapping and detrapping in polymeric materials: trapping parameters, Journal of Applied Physics, 106, 12, (2010)
  • [10] Liu N., Chen G., Changes in charge trapping/detrapping in polymeric materials and its relation with aging, Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), pp. 800-803, (2013)
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