TY - GEN
T1 - A Study of Transient Electric Field Distribution of XLPE Cable Joint in a VSC-HVDC System
AU - Hu, Yuxiao
AU - Ma, Hui
AU - Ekanayake, Chandima
AU - He, Shixiang
AU - Zheng, Linzi
AU - Xu, Yang
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/105000267823
U2 - 10.1109/CEIDP61745.2024.10907476
DO - 10.1109/CEIDP61745.2024.10907476
M3 - 会议稿件
AN - SCOPUS:105000267823
T3 - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
BT - 2024 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2024 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2024
Y2 - 6 October 2024 through 9 October 2024
ER -