Performance of Cross-linked Polyethylene Insulated Cable based on Detection of High Voltage Electric Field
DOI:
https://doi.org/10.21152/1750-9548.13.2.147Abstract
High voltage direct current transmission has been widely used in long-distance power transmission because of its advantages such as low loss and large throughput. The safety of cable is very important in the long-distance transmission process. Cross-linked polyethylene insulated cable has the advantages of simple manufacture, good heat resistance and easy installation; therefore it has been widely used in long-distance power transmission. In this study, conductance, dielectric and voltage withstanding performance of the insulating layers of cross-linked polyethylene cables with working voltage of 220 kV which was never used and has been used for 2, 4, 6 and 8 years were tested by various evaluation methods. The conductivity of the insulating layers was affected by temperature only under high and low electric field intensities and was affected by temperature and electric field strength under middle electric field intensity. Dielectric loss factor could reflect dielectric properties of materials; the larger the dielectric loss factor, the poorer the performance. The dielectric loss factor decreased with the increase of applied electric field frequency and increased with the increase of service years. Breakdown electric field strength could reflect voltage resistance of materials; the larger the breakdown electric field strength, the better the performance. The breakdown electric field strength was inversely proportional to the service years of the insulating layer, and the decrease amplitude increased significantly when the service time exceeded 2 years. In summary, cross-linked polyethylene insulated material satisfies the safety requirement of high voltage direct current transmission and can be used for manufacturing long-distance transmission cables.
References
Wutzel, H., M. Jarvid, J.M. Bjuggren, A.B. Johansson, V. Englund, and M.R. Andersson, Thioxanthone derivatives as stabilizers against electrical breakdown in cross-linked polyethylene for high voltage cable applications. Polymer Degradation & Stability, 2015. 112: p. 63-69. https://doi.org/10.1016/j.polymdegradstab.2014.12.002
Jang, D. and S. Park, Evaluation of Electrical Tree Degradation in Cross-Linked Polyethylene Cable Using Weibull Process of Propagation Time Energies, 2017. 10(11): p. 1789. https://doi.org/10.3390/en10111789
Wang, H., G. Tan, Y. Tan, L. Zhou, F. Zhou, G. Liu, and Y. Lu, Analysis of Thermal Aging Life and Physicochemical Properties of Crosslinked Polyethylene Seabed Cable Insulation. Polymer Materials Science & Engineering, 2015. 31(3): p. 71-75.
Li, J., H. Li, F. Zhou, S. Wang, J. Zhao, and B. Ouyang, Copper-catalyzed oxidation caused by copper-rich impurities in cross-linked polyethylene cable insulation. Journal of Materials Science Materials in Electronics, 2016. 27(1): p. 1-5. https://doi.org/10.1007/s10854-015-3820-7
Wang, Y., G. Li, J. Wu, and Y. Yin, Effect of temperature on space charge detrapping and periodic grounded DC tree in cross-linked polyethylene. IEEE Transactions on Dielectrics & Electrical Insulation, 2017. 23(6): p. 3704-3711. https://doi.org/10.1109/tdei.2016.005986
Tanaka, Y., R. Kodera, T. Kato, H. Miyake, H. Mori, and Y. Yagi, Observation of space charge accumulation behavior in cross-linked polyethylene at voltage polarity reversal. Electrical Insulation and Dielectric Phenomena. IEEE, 2015: p. 23-26. https://doi.org/10.1109/ceidp.2015.7352115
Liu, N., C. Zhou, G. Chen, Y. Xu, J. Cao, and H. Wang, Model to estimate the trapping parameters of cross-linked polyethylene cable peelings of different service years and their relationships with dc breakdown strengths. High Voltage, 2016. 1(2): p. 95-105. https://doi.org/10.1049/hve.2016.0012
Stamboliev, G., D. Milicevic, M. Micic, and E. Suljovrujic, Polyethylene crosslinked in different media: structural changes versus dielectric behaviour. Polymer Bulletin, 2015. 72(2): p. 371-385. https://doi.org/10.1007/s00289-014-1279-y
Foottit, E. Statistical, electrical and mathematical analysis of water treed cross-linked polyethylene cable insulation. 2015.
Fan, Y., Y. Qi, G. Bing, X. Rong, L. Yanjie, and P.L. Iroegbu, Research on the discharge characteristics for water tree in crosslinked polyethylene cable based on plasma-chemical model[J]. Physics of Plasmas, 2018. 25(3): p. 033512. https://doi.org/10.1063/1.5001853
Zhang, Y., D. Liu, J. Wu, and Y. Yin, Investigation on space charge behavior in water tree aged crosslinked polyethylene (XLPE) cable by experiment and simulation. International Symposium on Electrical Insulating Materials. IEEE, 2017: p. 613-616. https://doi.org/10.23919/iseim.2017.8166564
Yoshimura, N., M.S.A.A. Hammam, M, Nishida, and F. Noto, Effect of microvoids on V-t characteristics and tree growth in crosslinked polyethylene. Electrical Insulation & Dielectric Phenomena, 1978 Report 1978. Conference on. IEEE, 2016: p. 342-351. https://doi.org/10.1109/ceidp.1978.7728236
Zhang, Y., D. Liu, J. Wu, and Y. Yin, A Modified Algorithm for the Simulation of Charge Behavior in Water Tree Aged Cross-Linked Polyethylene Cable. IEEE Access, 2018. 6(99): p. 23929-23938. https://doi.org/10.1109/access.2018.2830402
Nelson, A.L., and F.M. Mcavoy, Development of field molded splices for ethylene-propylene rubber and crosslinked polyethylene insulated cables. Electrical Insulation Conference, 1973 Eic. IEEE, 2016: p. 185-187. https://doi.org/10.1109/eic.1973.7468679
Wang, Y., J. Wu, S. Yi, Y. Yin, Research of simultaneous measurement of space charge and conduction current in cross-linked polyethylene. International Conference on Condition Monitoring and Diagnosis. IEEE, 2016: p. 78-81. https://doi.org/10.1109/cmd.2016.7757786
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