第40卷,总第236期2022年11月,第6期《节能技术》ENERGYCONSERVATIONTECHNOLOGYVol.40,Sum.No.236Nov.2022,No.6PoE供电温度响应特性及散热优化王尧,翟庆诗,徐越,王晨,刘泰,韩镝(中国信息通信研究院泰尔系统实验室,北京100088)摘要:数字通信电缆供电技术(PoweroverEthernet,PoE)目前已广泛应用于WLAN接入点、网络摄像头、门禁、报警器等网络设备的通信和供电,是智慧城市、智慧农业、智慧医疗等应用领域大规模发展的重要基础技术。但是受电流的热效应影响,导体和线缆的温度会逐渐升高。尤其是在局端时,线缆一般以捆扎的形式布设,更放大了温度升高的影响,存在不可忽视的安全隐患。本文对捆扎后线缆PoE供电时的升温情况进行了试验,对其实际发热现象进行了分析研究,并提出了一种通过安装散热片提高数字通信电缆散热能力的方案。该方案可以有效降低捆扎线缆PoE供电时的工作温度,提高实际应用场景下的安全性。关键词:PoE供电;数字通信电缆;升温;散热片;解决方案中图分类号:TN913.32文献标识码:A文章编号:1002-6339(2022)06-0566-05PoEPowerSupplyTemperatureResponseCharacteristicsandHeatDissipationPerformanceOptimizationWANGYao,ZHAIQing-shi,XUYue,WANGChen,LIUTai,HANDi(ChinaAcademyofInformationandCommunicationsTechnology,ChinaTelecommunicationTechnologyLabs,Beijing100088,China)Abstract:PoE(poweroverEthernet)powersupplytechnologyofdigitalcommunicationcablehasbeenwidelyusedinthecommunicationandpowersupplyofWLANaccesspoints,webcams,accesscontrol,alarmsandothernetworkequipment.Itisanimportantbasictechnologyforthelarge-scaledevelopmentofsmartcities,smartagriculture,smartmedicalandotherapplicationfields.However,duetothether-maleffectofcurrent,thetemperatureofconductorsandcableswillgraduallyrise.Especiallyatthecen-tralofficeend,thecablesaregenerallylaidintheformofbundling,whichamplifiestheimpactoftem-peraturerise.Therewillbepotentialsafetyhazardsthatcannotbeignored.Thispapertestsandanalyzestheactualheatingphenomenonofbundledcablesduringpowersupply,andproposesaschemetoimprovetheheatdissipationcapacityofdigitalcommunicationcablebyinstallingheatsink.Thisschemecanef-fectivelyreducetheworkingtemperatureofthebundl...