三芯500 kV XLPE绝缘交流海底电缆设计及关键技术  

Design and Critical Technologies of 500 kV Three-Core XLPE Insulated AC Submarine Cable

作　　者：赵囿林 谢书鸿[2] 胡明 张洪亮 王文超 王海洋 杜强 ZHAO Youlin;XIE Shuhong;HU Ming;ZHANG Hongliang;WANG Wenchao;WANG Haiyang;DU Qiang(Zhongtian Technology Submarine Cable Co.,Ltd.,Nantong 226010,China;Jiangsu Zhongtian Technology Co.,Ltd.,Nantong 226010,China;Jiangsu Key Laboratory of Marine Energy and Information Transmission,Nantong 226010,China)

机构地区：[1]中天科技海缆股份有限公司,南通226010 [2]江苏中天科技股份有限公司,南通226010 [3]江苏省海洋能源与信息传输重点实验室,南通226010

出　　处：《电线电缆》2025年第4期24-30,共7页Wire & Cable

摘　　要：为满足800~1200 MW海上风电场集中送出需求,研制适用于200 m水深的三芯500 kV轻量化交联聚乙烯绝缘交流海底电缆。通过解析法对海底电缆绝缘厚度进行校核计算,并用COMSOL有限元分析软件验证不同敷设工况下的载流量。同时,优化大长度绝缘挤出工艺和大截面成缆光纤复合一体化技术,并依据相关标准进行型式试验和预鉴定扩展电气试验验证。结果表明,该海底电缆在轻量化设计、载流量及系统可靠性方面均能够达到产业化应用要求,可为未来500 kV及以下电压等级海底电缆的设计和制造提供技术支撑。In order to meet centralized transmission demands of 800~1200 MW offshore wind farms,500 kV three-core lightweight cross-linked polyethylene(XLPE)insulated AC submarine cable suitable for 200 m water depth was developed.Insulation thickness of submarine cables was verified through analytical calculations,and current-carrying capacity under various installation conditions was validated using COMSOL finite element analysis software.At the same time,long-length insulation extrusion process and large-section cable-forming optical fiber composite integration technology were optimized,type tests and pre-qualification extended electrical tests were also carried out according to relevant standards.Results showed that submarine cables could meet the requirements of industrial application in terms of lightweight design,current-carrying capacity,and system reliability,which could provide technical support for future design and manufacturing of 500 kV and lower voltagelevel submarine cables.

关 键 词：COMSOL 三芯500 kV 轻量化 XLPE绝缘 海底电缆 

分 类 号：TM247[一般工业技术—材料科学与工程]