Abstract
Surface charge accumulation on cone-type spacers restricts the development of dc gas-insulated substations (GISs) and gas-insulated transmission lines (GILs). In previous studies, many surface charge tailoring methods were investigated. However, indirect tailoring of surface charge by temperature field regulation has not been performed. In this paper, the relation between the temperature field distribution and the surface charge accumulation is studied by experiment. And a temperature control method by doping K2O·6TiO2 whiskers in the composite of epoxy resin is introduced and verified by experiment. The results show that the doping of K2O·6TiO2 is able to weaken the surface charge accumulation in both air and SF6.
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Acknowledgments
This work was supported in part by the National Key R&D Program of China (2017YFB0903800).
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Lin, C.J., Li, Q., Li, C.Y., Yuan, C., Zhu, Y.J., He, J.L. (2020). Surface Charge Tailoring Strategy Based on Temperature Field Regulation. 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_9
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DOI: https://doi.org/10.1007/978-3-030-31680-8_9
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