Study on the characteristics of dielectric charge transport in polypropylene cables 2nd China International Youth Conference on Electrical Engineering CIYCEE 2021

报告详情

Study on the characteristics of dielectric charge transport in polypropylene cables

编号：236 访问权限：仅限参会人更新：2021-12-03 10:50:56 浏览：612次张贴报告

报告开始：2021年12月17日 16:20（Asia/Shanghai）

报告时间：5min

所在会场：[Z] Poster Session [Z10] Poster Session 10: High voltage and insulation technology

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摘要

The performance of cables in HVDC transmission projects is directly related to the safe and stable operation of the entire system. As the main insulation material of cables, the space charge injection and accumulation characteristics of polypropylene under the action of DC voltage are important factors for the electrical breakdown of the insulation medium. This paper establishes a bipolar carrier simulation model of polypropylene material, and analyzes the influence of different parameters on the charge transport process. The simulation results show that with the increase of trap density, the electric field distribution inside the material has a similar change trend, but the charge migration speed gradually slows down; the decrease of the trapping coefficient and the increase of the detrapping coefficient will accelerate the migration of the charge; the temperature difference on the electrode The existence of, the charge injected on the high-temperature side becomes the dominant charge; when the polarity is reversed, the injection of electrons and holes at both ends of the medium is also reversed, and the degree of charge change increases with the increase of the voltage after the reversal.

关键词

Polypropylene cable,Dielectric,Charge transport

报告人

Liying Yu

North China Electric Power University

稿件作者

Liying Yu North China Electric Power University

Haozhi Shi North China Electric Power University

Zhen Zhang North China Electric Power University

Shusheng Zheng North China Electric Power University

Chengrong Li North China Electric Power University

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重要日期

会议日期

07月11日

2023

至

08月18日

2023
11月10日 2021

初稿截稿日期
12月10日 2021

注册截止日期
12月11日 2021

报告提交截止日期

主办单位

IEEE IAS

承办单位

IEEE IAS Student Chapter of Southwest Jiaotong University (SWJTU)
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
IEEE PELS (Power Electronics Society) Student Chapter of HUST