Conductivity and interface charge accumulation between XLPE and SIR for HVDC cable accessory

  • Guochang Li
  • Mingyue Liu
  • Chuncheng Hao
  • Qingquan Lei
  • Yanhui WeiEmail author


Interface charge accumulation between cross linked polyethylene (XLPE) and silicone rubber (SIR) is the key factor causing discharge failure for high voltage direct current (HVDC) cable accessory. However, the properties and mechanisms of interface charge behaviors in double-layer dielectric are not detailed. In the present work, dielectric performance and conductivity properties related to interface charge have been measured, and interface charge distributions between XLPE and SIR have been calculated based on Maxwell–Wagner polarization model. The experimental results indicate that charge conduction of SIR is larger than that of XLPE at room temperature, and the conductivity of SIR has a weak dependence on the temperature. By contrast, the conductivity of XLPE increases by three orders when the temperature increases from 25 °C to 90 °C, result in that the conductivity of XLPE exceed that of SIR at a certain temperature. The mismatch of conductivity properties for the two materials will cause charge accumulation at the interface. The interface charge density firstly decreases and then increases with the increasing temperature, and the polarity of charges are different for different temperature regions. Under 10 kV/mm, the transition temperature is about 40 °C. When the temperature exceeds the transition temperature, electric field in the two materials will reverse, and the polarity of interface charge will be changed accordingly.



This work was supported by Shandong Provincial Natural Science Foundation, China (Grant No. ZR2018BEE029), Qingdao Applied Foundation Basic Research Program, China (Grant No. 18-2-2-23-jch) and State Key Laboratory of Electrical Insulation and Power Equipment Foundation (Grant No. EIPE18209, EIPE17211).


  1. 1.
    H. Sjostedt, S.M. Gubanski, Y. Serdyuk, Charging characteristics of EPDM and silicone rubbers deduced from surface potential measurements. IEEE Trans. Dielectr. Electr. Insul. 16(3), 696–703 (2009)CrossRefGoogle Scholar
  2. 2.
    I. Ramirez, E.A. Cherney, S. Jarayam, Comparison of the erosion resistance of silicone rubber and EPDM composites filled with micro silica and ATH. IEEE Trans. Dielectr. Electr. Insul. 19(1), 218–224 (2012)CrossRefGoogle Scholar
  3. 3.
    J. Li, B.X. Du, H. Xu, Suppressing interface charge between LDPE and EPDM for HVDC cable accessory insulation. IEEE Trans. Dielectr. Electr. Insul. 24(3), 1331–1339 (2017)CrossRefGoogle Scholar
  4. 4.
    B.X. Jin Li, X.X. Du, Kong, Z.L. Li, Nonlinear conductivity and interface charge behaviors between LDPE and EPDM/SiC composite for HVDC cable accessory. IEEE Trans. Dielectr. Electr. Insul. 24(3), 1566–1573 (2017)CrossRefGoogle Scholar
  5. 5.
    T.T.N. Vu, G. Teyssedre, B. Vissouvanadin, S.L. Roy, C. Laurent, Correlating conductivity and space charge measurements in multi-dielectrics under various electrical and thermal stresses. IEEE Trans. Dielectr. Electr. Insul. 22(1), 117–127 (2015)CrossRefGoogle Scholar
  6. 6.
    C. Zhang, B. Du, J. Lin, H.C. Liang, Z.L. Li, Y.Q. Xing, Y. Gao, Effects of nonlinear conductivity on interface charge in HVDC cable accessories. In International Symposium on Electrical Insulating Materials (ISEIM), pp. 617–620 (2017)Google Scholar
  7. 7.
    S.L. Roy, F. Baudoin, V. Griseri, C. Laurent, G. Teyssedre, Charge transport modelling in electron-beam irradiated dielectrics: a model for polyethylene. J. Phys. D 43(31), 315402 (2010)CrossRefGoogle Scholar
  8. 8.
    J.R. Dennison, J. Brunson, Temperature and electric field dependence of conduction in low-density polyethylene. IEEE Trans. Plasma Sci. 36(5), 2246–2252 (2008)CrossRefGoogle Scholar
  9. 9.
    S.L. Roy, P. Segur, G. Teyssedre, C. Laurent, Description of bipolar charge transport in polyethylene using a fluid model with a constant mobility: model prediction. J. Phys. D 37(2), 298–305 (2003)CrossRefGoogle Scholar
  10. 10.
    G. Chen, M. Fu, X.Z. Liu, L.S. Zhong, Ac aging and space-charge characteristics in low-density polyethylene polymeric insulation. J. Appl. Phys. 97(8), 083713 (2005)CrossRefGoogle Scholar
  11. 11.
    G. Chen, Z.Q. Xu, Charge trapping and detrapping in polymeric materials. J. Appl. Phys. 106(12), 123707 (2009)CrossRefGoogle Scholar
  12. 12.
    G. Chen, Y. Tanaka, T. Takada, L. Zhong, Effect of polyethylene interface on space charge formation. IEEE Trans. Dielectr. Electr. Insul. 11(1), 113–121 (2004)CrossRefGoogle Scholar
  13. 13.
    S. Li, N. Zhao, Y. Nie, X. Wang, G. Chen, Space charge characteristics of LDPE nanocomposite/LDPE insulation system. IEEE Trans. Dielectr. Electr. Insul. 22(1), 92–100 (2015)CrossRefGoogle Scholar
  14. 14.
    Y. Tanaka, G. Chen, T.Y.G. Tay, T. Takada, Effect of interface on space charge in polyethylene. In Symposium on Electrical and Electronic Insulating Materials and Applications in System, pp. 505–508 (2001)Google Scholar
  15. 15.
    X. Wang, M. Zheng, X. Chen, Z. Peng, K. Wu, S. Liu, J. Peng, S.Z. Chen, The effect of temperature gradient on space charge accumulation at SR/XLPE interface under DC stress. In 10th IEEE International Conference on Solid Dielectrics, pp. 1–4 (2010)Google Scholar
  16. 16.
    Z. Li, H.Q. Fan, Polaron relaxation associated with the localized oxygen vacancies in Ba0.85Sr0.15TiO3 ceramics at high temperatures. J. Appl. Phys. 106, 054102 (2009)CrossRefGoogle Scholar
  17. 17.
    T.J. Lewis, The physico-chemical origins and nature of space charge in insulating solids under electrical stress. In IEEE International Conference on Solid Dielectrics, pp. 223–227 (2001)Google Scholar
  18. 18.
    E. Tuncer, Y.V. Serdyuk, S.M. Gubanski, Dielectric mixtures: electrical properties and modeling. IEEE Trans. Dielectr. Electr. Insul. 9(5), 809–828 (2002)CrossRefGoogle Scholar
  19. 19.
    G.C. Montanari, P.H.F. Morshuis, Space charge phenomenology in polymeric insulating materials. IEEE Trans. Dielectr. Electr. Insul. 12(4), 754–767 (2005)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Institute of Advanced Electrical MaterialsQingdao University of Science and TechnologyQingdaoChina
  2. 2.State Key Laboratory of Electrical Insulation and Power EquipmentXi’an Jiaotong UniversityXi’anChina

Personalised recommendations