Interfacial space charge characteristic of PPLP insulation for HVDC cables

被引：0
|
作者：
Zhao, Xuefeng [1 ]
Pu, Lu [1 ]
Xu, Zhiqiang [2 ]
Chen, George [2 ]
Duan, Wei [1 ]
Sun, Haofei [1 ]
Ju, Zeli [1 ]
机构：
[1] Shannxi Electric Power Research Institute, Xi'an, Shannxi, China
[2] School of Electronics and Computer Science, University of Southampton, Southampton, United Kingdom
来源：
High Voltage | 2020年 / 5卷 / 05期
基金：
英国工程与自然科学研究理事会;
关键词：
Kraft paper - Kraft pulp - Electric fields - HVDC power transmission - Cable sheathing - Electric insulation - Wind power;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
High-voltage DC (HVDC) cables show more efficiency than high-voltage AC cables over the long distance power transmission and have attracted significant attention recently due to rapid developments in off-shore wind farm. Polypropylene laminated paper (PPLP) insulation based HVDC cables have provided a reliable operation for many years and are the highest voltage level in operation at the moment. In this study, the authors intend to understand the electrical performance of PPLP insulation system by examining space charge in detail, especially at the interfaces. It has been found that the interface between polypropylene and Kraft paper acts as trap for charge carriers, resulting in an optimal electric field distribution in PPLP insulation system. The optimal electric field distribution enhances overall electrical performance of PPLP insulation, including higher dc breakdown strength and lower electrical conductivity. © 2020 BMJ Publishing Group. All rights reserved.
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页码：628 / 635
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