Simulation of DC Electric Fields on the Layer Structure of PPLP for Butt-Gap Conditions in HVDC MI-PPLP Cable
- Authors
- Hwang, Jae-Sang; Kwon, Ik-Soo; Lee, Bang-Wook; Jung, Chae-Kyun
- Issue Date
- May-2019
- Publisher
- 대한전기학회
- Keywords
- Butt-gap; DC electric field analysis; HVDC MI-PPLP cables; Layer structure
- Citation
- Journal of Electrical Engineering & Technology, v.14, no.3, pp.1335 - 1345
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- Journal of Electrical Engineering & Technology
- Volume
- 14
- Number
- 3
- Start Page
- 1335
- End Page
- 1345
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/2990
- DOI
- 10.1007/s42835-019-00152-7
- ISSN
- 1975-0102
- Abstract
- The electric and thermal properties of HVDC MI-PPLP cable have recently been improved such as dielectric performance and maximum allowable temperature. However, its de electric field characteristics have not been fully investigated. As a lapped cable, its main insulating material is PPLP, which has a special composition of Kraft-PP film-Kraft. This prevents conventional de electric field analysis for the bulk type model from being directly applied to HVDC MI-PPLP cable. Therefore, the layer structure should be considered for HVDC MI-PPLP cable. In this paper, we focused on the difference in the de electric field properties between the bulk and layer type model, which were determined at a steady state and polarity reversal. In order to determine the difference in the number of the butt-gap, single and double butt-gaps were simulated and compared in terms of the butt-gap conditions. Particularly for the double butt-gap, it was possible to investigate the effects of size, position, and formations using de electric field simulation. Based on the de electric field analysis, meaningful information about the butt-gap characteristics of HVDC MI-PPLP cables was obtained.
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