66 kV高导热风机电缆载流量与温升特性研究  

Research on Current Carrying Capacity and Temperature Rise of 66 kV Wind Turbine Cable with High Thermal Conductivity

作　　者：李进 刘松涛 徐静 邹坤 朱闻博 汪传斌 杜伯学 LI Jin;LIU Songtao;XU Jing;ZOU Kun;ZHU Wenbo;WANG Chuanbin;DU Boxue(School of Electrical and Information Engineering,Tianjin University,Tianjin 300072;Yuandong Cable Co.,Ltd.,Wuxi 214257;Engineering Management Company,State Grid Jibei Electric Power Co.,Ltd.,Beijing 100070;The United Laboratory of Advanced Electrical Materials and Equipment Support Technology,Electric Power Research Institute,CSG,Guangzhou 510663)

机构地区：[1]天津大学电气自动化与信息工程学院,天津300072 [2]远东电缆有限公司,无锡214257 [3]国网冀北电力有限公司工程管理分公司,北京100070 [4]先进电工材料及装备基础联合实验室(南方电网科学研究院),广州510663

出　　处：《电气工程学报》2023年第1期244-250,共7页Journal of Electrical Engineering

基　　金：国家自然科学基金(51807136,51537008);江苏省博士后科研计划(2020Z092)资助项目。

摘　　要：构建以海上风电等为新增电源主体的新型电力系统是实现碳达峰、碳中和目标的重大战略,作为其关键装备——66 kV柔性电缆已成为目前10MW以上海上风机的主流集电方式,但其工作环境恶劣、散热条件差,迫切需要实现该型电缆载流能力的提升。因此本文制备了高导热主绝缘与护套材料,并通过有限元仿真模拟了高导热66 kV风机电缆载流量提升效果,使用解析法计算了不同负载下高导热电缆的载流能力。研究发现,改性材料与原材料相比,具有更好的电气绝缘性能,且绝缘材料与护套材料导热系数分别提升90%与52%,并使66 kV风机电缆载流量由682 A提升至720.2 A;相同负载电流下高导热电缆最大温度下降8.4℃。研究结果为高压风机电缆载流量提升提供了有效方法,同时为高压三芯电缆仿真计算提供了相关参考。The construction of a new power system with offshore wind plant as the main new power supply is a major strategy to achieve the goal of carbon peak and carbon neutrality.66 kV flexible cable,as the key equipment,has become the mainstream power collection method for offshore wind turbines above 10 MW,but its working environment and heat dissipation conditions are poor,so it is urgent to improve the ampacity of this type of cable.Therefore,the main insulation and sheath materials with high thermal conductivity are prepared,and the ampacity improvement effect of high thermal conductivity 66 kV wind turbine cable is simulated by finite element simulation,and the temperature distribution of high thermal conductivity cable under different loads is calculated by analytical method.It is found that the modified materials have better electrical insulation performance than the raw materials,and the thermal conductivity of insulating materials and sheath materials are increased by 90%and 52%respectively,and the ampacity of 66 kV wind turbine cable is increased from 682 A to 720.2 A.Under the same load current,the maximum temperature of high thermal conductivity cable decreases by 8.4℃.The research results provide an effective method for improving the ampacity of high-voltage wind turbine cables,and provide relevant reference for the simulation calculation of high-voltage three-core cables.

关 键 词：风机电缆 有限元仿真 高导热材料 载流量 温升特性 

分 类 号：TM561[电气工程—电器]