Abstract
The paper describes the development of an insulation material compound with non-linear field-grading behavior. As matrix material silicone gel was used. The additives, which cause the non-linearity, consist of a support material with metal oxide coating. The non-linear electrical properties can be adjusted by the introduction of different dopants. In detailed studies the basic properties of the new non-linear-conductive materials (NLCM) were investigated. For demonstration purposes a cable joint test specimen for medium voltage was designed, accompanied by different field simulations. Based on these results a 3D joint shell model was generated and realized with a 3D printer. In a final step the cable joint was tested according to the relevant standard DIN VDE 0278-629-1 [1].
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References
DIN VDE 0278-629-1:2009-07: Test requirements on accessories for use on power cables of rated voltage from 3,6/6(7,2) kV up to 20,8/36(42) kV - Part 1: Cables with extruded insulation (2009)
Wels, S., Lambrecht, J., Claudi, A.: Silicone gel compounds for medium and high voltage insulation with nonlinear stress grading - state of art. In: 6th Conference on Silicone Insulation, Burghausen, pp. 103–107 (2017)
Austermühl, A., Wels, S., Claudi, A.: Investigations on ageing of hollow microsphere filled silicone gel under electric field stress. In: 19th International Symposium on High Voltage Engineering, Pilsen, Czech Republic (2015)
Finis, G.: Das Verhalten von Silikongel unter hohen elektrischen Feldstärken. Dissertation, Universität Kassel (2005)
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Wels, S., Bauer, J., Lambrecht, J., Claudi, A. (2020). Silicone Gel Compounds with Non-linear Stress Grading for Medium Voltage Applications. In: Németh, B. (eds) Proceedings of the 21st International Symposium on High Voltage Engineering. ISH 2019. Lecture Notes in Electrical Engineering, vol 599. Springer, Cham. https://doi.org/10.1007/978-3-030-31680-8_46
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DOI: https://doi.org/10.1007/978-3-030-31680-8_46
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