超高压直流电缆的国产化研究进展  

Localization Research Progress of Ultra-high Voltage Direct Current Cable

作　　者：马人凤 朱永华[2] 吴建东[1] 尹毅[1] 

机构地区：[1]上海交通大学电气工程系,上海200240 [2]上海电缆研究所,上海200093

出　　处：《绝缘材料》2016年第11期1-8,共8页Insulating Materials

基　　金：国家自然科学基金资助项目(51277118);国家重点研发计划(2016YFB0900701)

摘　　要：超高压直流电缆及附件是连接电源端和受电站的必要装备之一,特别是随着柔性直流输电技术的发展和全球能源互联思想的提出。近年来挤包绝缘高压直流电缆和附件技术的发展越来越快,已经成为涉及电气工程和材料科学的研究和应用热点。由于挤包绝缘高压直流电缆存在空间电荷积聚和电导率随温度和电场变化的现象,绝缘中的电场分布比较复杂,同时受负载和环境温度的影响较大。本文综述了国内外超高压直流电缆的发展概况,尤其是挤包绝缘高压直流电缆中存在的关键技术难题以及在解决这些技术难题时所采取的技术路线,特别是国产化中采用的技术原理、取得的进展以及面临的困难。同时分析了目前与超高压直流电缆相关的其他技术,如直流电缆绝缘结构设计和电缆试验技术等。总体而言,目前国产超高压直流电缆的发展路线是符合该技术自身发展规律的,通过科研院所及制造企业的共同努力,国产超高压直流电缆的制造技术有望取得突破性进展。Ultra-high voltage direct current （UHVDC） cable and its accessory is one of the most important equipment for the connection between power supply and electric power receiving station, especially with the development of HVDC flexible technology and the proposal of global energy interconnection thoughts. In recent years, the extruded HVDC cable and its accessories technology develop very fast, and have become a hot spot in the research and application of electrical engineering and materials science. Because there is space charge accumulation in the extruded HVDC cable and its conductivity change with temperature and electric field, the electric field distribution of cable insulation is very complex and strongly affected by load and environment temperature. This paper reviews the domestic and foreign development situation of HVDC cables, especially the key technical problems in the extruded insulation HVDC cables and the technical routes to solve these problems. At the same time, other technologies related to extruded I-IVDC cables such as the design of DC cable insulation structure and cable testing tech- nology were analyzed. In general, the development of domestic UHVDC cable is in line with its own law, and it is entirely possible to make a breakthrough in the manufacturing technology of UHVDC cable with the joint efforts of research institutes and manufacturing enterprises.

关 键 词：超高压直流输电 挤包绝缘 聚合物纳米复合 空间电荷 直流电导率 

分 类 号：TM247.1[一般工业技术—材料科学与工程]