基于高导热管道提升排管敷设下的电力电缆载流量的研究  

Research on Improving Cable Capacity Under Duct Laying Based on High Thermal Conductivity Pipeline

作　　者：陈文教 郑志豪 徐研 李俊 刘国权 张婧婧[2] 刘刚[3] CHEN Wenjiao;ZHENG Zhihao;XU Yan;LI Jun;LIU Guoquan;ZHANG Jingjing;LIU Gang(Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd.,Guangzhou 510310,China;School of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,China;School of Electric Power Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]广东电网有限责任公司广州供电局,广东广州510310 [2]广东工业大学材料与能源学院,广东广州510006 [3]华南理工大学电力学院,广东广州510640

出　　处：《绝缘材料》2022年第2期97-103,共7页Insulating Materials

基　　金：广州供电局输电类科技项目(GZHKJXM20190049)。

摘　　要：为了解决排管敷设电缆在运行过程中由于高热阻环境造成载流量大幅低于设计标准的问题,本文研发了一种高导热电缆管道材料石墨烯微片与石墨片改性高密度聚乙烯(PG-GNPs-HDPE),并建立仿真模型验证目前城市配网常用的排管敷设工况下电缆采用PG-GNPs-HDPE高导热管道后的载流量提升效果。结果表明:与普通HDPE管道相比,采用PG-GNPs-HDPE高导热管道后,对于2×4排管敷设110 kV 500 mm^(2)电缆群,其载流量提升了9.32%;对于3×4排管敷设10kV 3×400 mm^(2)电缆群,其载流量提升了7.42%。In order to solve the problem that the cable capacity much lower than the design standard due to the high thermal resistant environment in the running process of duct cable laying, this paper developed the cable pipe materials that graphene microchip and graphite flake modified HDPE(PG-GNPs-HDPE) with high thermal conductivity, then established a simulation model and verified the improving effect of using the high thermal conductive pipeline of PG-GNPs-HDPE under the common duct laying condition of the current urban distribution network. The results show that compared with the ordinary HDPE pipe, the carrying capacity of 110 kV 500 mm^(2) cable group with 2×4 laying is increased by 9.32% after using PG-GNPs-HDPE high thermal conductivity pipe;for 10 kV 3×400 mm^(2) cable group with 3×4 laying, the carrying capacity increases by 7.42%.

关 键 词：电力电缆 载流量 排管敷设 外部热阻 高导热管道 

分 类 号：TM247[一般工业技术—材料科学与工程] TM215[电气工程—电工理论与新技术]