轻质高绝缘复合芯体制备及其在66 kV复合横担中的应用  

Preparation of Light⁃weight and High Insulation Composite Core and Its Application in 66 kV Composite Cross⁃arm

作　　者：张重远[1] 苏铮 李乐[1] 高烽晟 李浩义 尹晓萱 刘贺晨[1] 刘云鹏[1] 周松松 唐力 ZHANG Zhongyuan;SU Zheng;LI Le;GAO Fengsheng;LI Haoyi;YIN Xiaoxuan;LIU Hechen;LIU Yunpeng;ZHOU Songsong;TANG Li(Hebei Key Laboratory of Green and Efficient New Electrical Materials and Equipment,North China Electric Power University,Hebei Baoding 071003,China;China Electric Power Research Institute,Beijing 100192,China;Electric Power Research Institute of China Southern Power Grid,Guangzhou 510000,China)

机构地区：[1]华北电力大学河北省绿色高效电工新材料与设备重点实验室,河北保定071003 [2]中国电力科技研究院有限公司,北京100192 [3]中国南方电网电力科学研究院,广州510000

出　　处：《高压电器》2024年第4期56-64,共9页High Voltage Apparatus

基　　金：国家自然科学基金青年科学基金项目(52207023)

摘　　要：随着“双碳”战略的逐步落实,新型复合材料横担正逐步代替铁制横担,在电力线路中的应用日益广泛。文中制备得到密度为1.1 g/cm^(3)的66 kV轻质高绝缘复合绝缘横担,并对其进行吸水率、染料渗透、水扩散泄漏电流、击穿强度、热诱导、机械及电气试验。试验结果表明:填充芯体材料样品的质量吸水率为0.141%,水扩散泄漏电流小于103.3μA,交流击穿强度大于71 kV/cm,各项性能指标均达到DL/T 1580—2016棒形复合绝缘子用芯棒技术规范对于理化性能、电气性能及机械性能的标准要求,样品及横担整体无明显缺陷,横担耐老化性较好。同时,轻质高绝缘复合绝缘横担微观界面结合良好,绝缘性能优于传统实心横担,满足新型电力系统清洁低碳、安全可靠的应用需求。With the gradual implementation of the‘dual Carbon’strategy,the cross arm with new composite mate-rial is gradually replacing the iron cross arm and its application in power lines is becoming more and more exten-sive.In this paper,a 66 kV lightweight and high-insulating composite insulation cross arm with a density of 1.1 g/cm^(3) is prepared and subjected to such test as water absorption,dye penetration,water diffusion leakage current,break-down strength,thermal induction,mechanical and electrical performance.The test results show that the mass water absorption rate of the sample filled with core material is 0.141%,the water diffusion leakage current is less than 103.3μA and the AC breakdown strength is higher than 71 kV/cm.All the performance indexes can reach the re-quirements of DL/T 1580—2016 technical specification for core bars for bar composite insulators in terms of physi-cal and chemical properties,electrical properties and mechanical properties.Both the sample and the cross arm as a whole have no obvious defects and the cross arm has good aging resistance.At the same time,the lightweight and high-insulation composite insulation cross arm has good microscopic interface bonding performance,and the insula-tion performance is superior to that of the traditional solid cross arm,which meets the application needs of the new power system for clean,low-Carbon,safe and reliable applications.

关 键 词：轻质高绝缘材料 复合绝缘横担 绝缘芯体 电气性能 

分 类 号：TM21[一般工业技术—材料科学与工程]