A Study of Transient Electric Field Distribution of XLPE Cable Joint in a VSC-HVDC System

被引：0

作者：

Hu, Yuxiao ^{[1
,2
]}

Ma, Hui ^{[2
]}

Ekanayake, Chandima ^{[2
]}

He, Shixiang ^{[1
]}

Zheng, Linzi ^{[1
]}

Xu, Yang ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Elect Engn, Xian 710049, Peoples R China

[2] Univ Queensland, Sch Elect Engn & Comp Sci, Brisbane, Qld 4072, Australia

来源：

2024 IEEE CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA, CEIDP | 2024年

关键词：

INSULATION; SIMULATION;

D O I：

10.1109/CEIDP61745.2024.10907476

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Cross-linked polyethylene (XLPE) cable is one of the key assets in a voltage source converter (VSC) based high-voltage direct current (HVDC) system. Due to the complex geometry and interfaces among different material, cable joints are the most critical part of a cable system. In this paper, two typical transient overvoltages (zero-crossing damped overvoltage, very slow front overvoltage) is obtained in a VSC-HVDC system and their effects on the electric field distribution of the joint insulation is investigated. The results are compared with the standard switching impulse tests. The temperature-dependent and electric field-dependent characteristics of insulation conductivity and the ratio of double-layer material conductivities at the joint interface are discussed. It is found that geometry of the cable joint and the ratio of XLPE and ethylene propylene diene monomer (EPDM) conductivities are the dominant factors on both steady-state DC field and transient electric fields caused by the system overvoltage.

引用

页数：5

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