10kV跌落式熔断器材质及温升试验分析研究  

Analysis of Material and Temperature Rise Test of 10kV Drop-out Fuse

作　　者：王飞鸣 赵琦 赵义松 徐振乙 吴晗序 牟童 段慧娟 伊文龙 WANG Feiming;ZHAO Qi;ZHAO Yisong;XU Zhenyi;WU Hanxu;MU Tong;DUAN Huijuan;YI Wenlong(Elenctric Power Research Institute of State Grid Liaoning Electric Power Supply Co.,Ltd.,Shenyang 110006,China;Liaoning Dongke Power Co.,Ltd.,Shenyang 110006,China;State Grid Liaoning Electric Power Supply Co.,Ltd., Shenyang 110006,China;High Voltage and Large Current Laboratory of State Grid Corporation,Shenyang 110006,China)

机构地区：[1]国网辽宁省电力有限公司电力科学研究院,沈阳110006 [2]辽宁东科电力有限公司,沈阳110006 [3]国网辽宁省电力有限公司,沈阳110006 [4]国网高电压强电流实验室,沈阳110006

出　　处：《高压电器》2019年第1期80-86,共7页High Voltage Apparatus

摘　　要：为了有效地控制10kV跌落式熔断器质量,给出系统中熔断器运行问题的主要原因,提出质量改进方法,国家电网公司开展10kV跌落式熔断器物资抽检试验工作。通过对熔断器材质分析和温升试验,对10kV跌落式熔断器主回路导体接触面材质检测,给出试验标准温升限值,结合温升试验结果,统计分析熔断器设备运行状态及质量问题。试验分析熔断器不同运行电流及不同位置过热的根本原因,给出熔断器不同位置温升变化曲线及上升率。结果表明:熔断器材质普遍存在不同程度的缺陷,材质检测不合格率为88.9%,温升试验不合格率为44.4%,熔断器温升试验发热点主要集中在上导电片与上触头滑动连接位置,上触头螺帽与熔管螺纹连接位置和熔丝与下导体螺栓紧固位置。因此,严格把控10kV跌落式熔断器材质质量对提高熔断器稳定运行具有重要意义。文中研究结果为国网公司物质采购提供技术支持。In order to effectively control the quality of the 10kV drop fuse,the main reason for the operation of thefuse in the system is given,and the quality improvement method is proposed. The State Grid Corporation conductsthe sampling test of the 10kV drop fuse. Through the material analysis and temperature rise test of the fuse,the mate-rial temperature of the contact surface of the main circuit conductor of the 10kV drop fuse is tested,and the test stan-dard temperature rise limit is given. Combined with the temperature rise test results,the operating conditions andquality problems of the fuse equipment are analyzed. The test analyzes the root cause of the different operating cur-rents of the fuses and the overheating at different locations. The temperature rise curve and the rising rate of the fusesat different positions are given. The results show that the fuse materials generally have different degrees of defects,the material testing failure rate is 88.9%,and the temperature rise test failure rate is 44.4%. The heat rise point of thefuse temperature rise test is mainly concentrated on the sliding position of the upper conductive piece and the uppercontact,the screw connection position of the upper contact nut and the fusion tube,and the fastening position of thefuse and the lower conductor bolt. Therefore,strictly controlling the material quality of the 10kV drop fuse is of greatsignificance for improving the stable operation of the 10kV drop fuse. The research results in this paper provide technical support for the material procurement of State Grid Corporation.

关 键 词：10kV 跌落式熔断器 材质试验 温升试验 抽检试验 

分 类 号：TM563[电气工程—电器]