摘要
随着交联聚乙烯直流海缆向着高电压、大容量的方向发展,其在工程应用中也遇到了温度和电场两方面的挑战。文中结合±160 kV XLPE直流海缆建立了XLPE海缆的电场仿真模型和热路模型,对更高电压等级的XLPE直流海缆的结构特点进行了探讨。通过仿真发现,直流海缆绝缘层的厚度同时影响海缆的温度和场强分布,在对高电压、大容量海缆设计时需要综合考虑绝缘材料能承受的最大场强和最高温度,选取合适的绝缘层厚度。同时,通过仿真对比铜、铝导体电缆对电场、温度的影响发现,铜导体电缆运行温度较低,有利于电缆稳定运行,而铝导体海缆虽然体积更大,但其重量小,更有利于安装敷设。
With the development of XLPE DC submarine cables towards high voltage and large capacity,it encoun⁃ters the challenges in such two aspects as temperature and electric field in engineering application.In this paper,the electric field simulation model and thermal circuit model of the XLPE submarine cable are set up in combination with±160 kV XLPE DC submarine cable,and the structural characteristics of XLPE DC submarine cable with high⁃er voltage is discussed.It is found through simulation that the thickness of the insulation layer of the DC submarine cable affects both the temperature and the field strength distribution of the submarine cable.In the case of designing a high⁃voltage and large⁃capacity submarine cable,it is necessary to comprehensively consider the maximum field strength and the maximum temperature that the insulation material can withstand and to select the most appropriate thickness of the insulating layer.At the same time,it is also found through the simulation and comparison of the ef⁃fects of cables with copper and aluminum conductor on the electrical field and temperature that the operation tem⁃perature of cable with copper conductor is lower and is beneficial to the stable operation of cable.While,the subma⁃rine cable with aluminum conductor,despite of its large volume,has small weight and is more beneficial for the in⁃stallation and laying.
作者
赵小令
吴佳玮
刘耀
肖晋宇
范翔宇
高景晖
李飞
钟力生
ZHAO Xiaoling;WU Jiawei;LIU Yao;XIAO Jinyu;FAN Xiangyu;GAO Jinghui;LI Fei;ZHONG Lisheng(Global Energy Interconnection Development and Cooperation Organization,Beijing 100031,China;State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China)
出处
《高压电器》
CAS
CSCD
北大核心
2022年第3期57-63,共7页
High Voltage Apparatus
基金
国家电网有限公司总部科技项目(全球能源互联网集团有限公司科技项目)。
关键词
XLPE直流海缆
电场仿真模型
热路模型
绝缘厚度
导体
XLPE DC submarine cable
simulation model of electric field
thermal circuit model
insulation thickness
conductor
