Effect of Charge Rate on Space Charges Accumulation in XLPE in Damped Alternating Current Testing for Power Cable

被引：0
|
作者：
Wang W. [1 ]
Jiang D. [1 ]
Dong W. [1 ]
Tian Y. [1 ]
Xiong J. [2 ]
Du G. [2 ]
机构：
[1] Beijing Key Laboratory of High Voltage & Electromagnetic Compatibility, North China Electric Power University, Beijing
[2] Electric Power Test & Research Institute, Guangzhou Power Supply Co., Ltd., Guangzhou
来源：
Wang, Wei (kingway@ncepu.edu.cn) | 2018年 / Science Press卷 / 44期
关键词：
Cross-linked polyethylene (XLPE); DAC; DC charge; Pulsed electroacoustic (PEA) method; Space charge;
D O I：
10.13336/j.1003-6520.hve.20180828016
中图分类号：
学科分类号：
摘要：
Damped alternating current (DAC) testing is widely used for partial discharge detection of grade 35 kV-and-below cables, but this method is currently used less frequently in higher-voltage grade (110 kV and above) cables. One of the reasons is that people worry about the DC charging process may cause the accumulation of space charge, thus endangering the cable insulation. Consequently, by the pulsed electroacoustic (PEA) method, we measured and compared the space charges in XLPE materials at different DC charging rates. XLPE specimens with a thickness of 0.35 mm and a size of 40 mm×40 mm were prepared and were linearly applied to 12 kV/mm, 20 kV/mm and 30 kV/mm field strengths and maintained for 40 min. The change in the space charge distribution was analyzed during the linear voltage stage, the sustain voltage stage, and the voltage off process. The results show that, in the linear voltage process, even the charge rate is very slow, the space charge in the XLPE is not easy to accumulate; if the applied voltage field is too low, which is beyond 12 kV/mm and unable to reach the threshold of the injected field strength, the space charge is not easy to accumulate. If the voltage is constant and maintained for a period of time, the space charge in the XLPE begins to accumulate. © 2018, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：2881 / 2888
页数：7
相关论文
共 26 条
  • [1] Zhong L., Ren H., Cao L., Et al., Development of high voltage direct current extruded cables, High Voltage Engineering, 43, 11, pp. 3473-3489, (2017)
  • [2] Gulski E., Smit J.J., Seitz P.N., Et al., PD measurements on-site using oscillating wave test system, IEEE International Symposium on Electrical Insulation, pp. 420-423, (1998)
  • [3] Zhao J., Zhao P., Chen Z., Et al., Review on progress of HVDC cables insulation materials, High Voltage Engineering, 43, 11, pp. 3490-3503, (2017)
  • [4] Gulski E., Cichecki P., Wester F., Et al., On-site testing and PD diagnosis of high voltage power cables, IEEE Transactions on Dielectrics and Electrical Insulation, 15, 6, pp. 1691-1700, (2008)
  • [5] Luo J., Ma C., Qiu Y., Et al., Study on test methods of XLPE power cable rated up to 35 kV, Power System Technology, 24, 12, pp. 58-61, (2000)
  • [6] Yang L., Zhu J., Sun F., Et al., Use of oscillating wave voltage in the measurements of XLPE power cable, High Voltage Engineering, 32, 3, pp. 27-30, (2006)
  • [7] Lu G., Xiong J., The partial discharge diagnosis of 10 kV cables by usingl oscillating wave voltage method, Southern Power System Technology, 7, 4, pp. 34-38, (2013)
  • [8] Peng F., Liu B., Pang X., Et al., Review of the equivalence between oscillating wave voltage and AC methods for XLPE cables withstand and partial discharge measurement, High Voltage Apparatus, 49, 7, pp. 116-121, (2013)
  • [9] Liu J., Wu G., Zhou K., Et al., Space charge measuring device based on PEA method, High Voltage Engineering, 35, 3, pp. 607-612, (2009)
  • [10] Wang W., Sun H., Li F., Et al., Space charge measurement and characteristics in the actual cable, Transactions of China Electrotechnical Society, 30, 1, pp. 255-260, (2015)
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