Issue |
MATEC Web Conf.
Volume 260, 2019
2018 7th International Conference on Power Science and Engineering (ICPSE 2018)
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Article Number | 02001 | |
Number of page(s) | 5 | |
Section | Electronics and Electrical Automation | |
DOI | https://doi.org/10.1051/matecconf/201926002001 | |
Published online | 25 January 2019 |
Research on Nonlinear EPDM for ±525kV HVDC Cable Accessories
NARI Group Corporation, 211106 Nanjing, China
High voltage direct current (HVDC) cable accessories are usually the weak link in the cable system for the electric field distribution is often extremely uneven, and it has a range of adverse effects in design and manufacture. In this paper, Ethylene-propylene-diene terpolymer (EPDM) was developed for ±525 kV HVDC cable accessories, and the conductivity, XLPE/EPDM interface charge behavior and breakdown strength were tested respectively. The electric field distribution of cable accessories was calculated by COMSOL analysis software. It is shown that the conductivity of EPDM is nonlinear with electric field, and it is possible to achieve the uniformity of electric field distribution by using a composite material with nonlinear conductive properties. Furthermore, the interfacial charge characteristics of XLPE/EPDM depend on the conductivity of EPDM. As a consequence, the research will make a potential application for ±525 kV HVDC cable accessories.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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