高温水环境对复合材料绝缘横担性能的影响研究  

Influence of High TemperatureWater on Performance of Composite Insulation Cross-arm

作　　者：柯锐 何昌林[1,2] 梅端 朱晓东[1,2] 吴雄 沈帆[1,2,3] 吴峰 KE Rui;HE Changlin;MEI Duan;ZHU Xiaodong;WU Xiong;SHEN Fan;WU Feng(NARI Group Corporation,Nanjing 211106,China;Wuhan NARI Limited Liability Company of State Grid Electric Power Research Institute,Wuhan 430074,China;Hubei Key Laboratory of Power Grid Lightning Risk Prevention,Wuhan 430074,China)

机构地区：[1]南瑞集团有限公司,江苏南京211106 [2]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430074 [3]电网雷击风险预防湖北省重点实验室,湖北武汉430074

出　　处：《绝缘材料》2021年第10期100-104,共5页Insulating Materials

摘　　要：为更好地指导配网用复合材料绝缘横担应用,依据GB/T 20142—2006要求对密封处理及未密封处理的两类复合材料绝缘横担进行了42 h水煮(0.1%NaCl)试验,研究高温水环境对两种处理方式绝缘横担性能的影响。对水煮前后吸水率、额定弯曲负荷、拉伸强度、弯曲强度、干工频电压、干雷电冲击电压及电气强度等性能进行对比测试,同时采用SEM进行断口微观形貌分析。结果表明:在高温水环境下,密封处理绝缘横担性能优于未密封处理绝缘横担,但两种处理方式的绝缘横担额定弯曲负荷均大于6.5 kN,雷电冲击耐受电压均大于350 kV,拉伸强度和弯曲强度分别大于680 MPa和1000 MPa,表现出良好的力学及电气性能。In order to guide the application of composite insulation cross-arm in distribution networks,we carried out 42 h boiling(0.1%NaCl)tests on the sealed and unsealed composite insulation cross-arm according to the requirements of standard GB/T 20142-2006,and studied the influence of high temperature water environment on the performance of the insulation cross-arms treated by the two methods.The water absorption,specified bending load,tensile strength,bending strength,dry power frequency voltage,dry lightning impulse voltage,and breakdown strength of the insulation cross-arms were tested before and after boiling.Meanwhile,the microscopic morphology of the fracture was analyzed by SEM.The result shows that under high temperature water environment,the performance of the sealed cross-arm is better than that of the unsealed one.The specified bending load of all the samples is above 6.5 kN,the lightning impulse withstand voltage is greater than 350 kV,and the tensile and bending strengths is greater than 680 MPa and 1000 MPa,respectively.The samples show good mechanical and electrical properties.

关 键 词：复合材料绝缘横担 水煮 力学性能 电气性能 SEM 

分 类 号：TM215[一般工业技术—材料科学与工程]