特高压用大容量优比特性电容器内熔丝最小熔断能量试验研究  

Study on Minimum Fusing Energy Test of Inner Fuse for Capacitor with Large Capacity and Superior Ratio in UHV Application

作　　者：国江 马跃 林浩 姜胜宝 黄想 朱庆东 GUO Jiang;MA Yue;LIN Hao;JIANG Shengbao;HUANG Xiang;ZHU Qingdong(State Key Laboratory of Power Grid Environment Protection,China Electric Power Research Institute,Wuhan 430074,China;State Grid Corporation of China,Beijing 100031,China;State Grid Shandong Electric Power Company Electric Power Research Institute,Jinan 250001,China)

机构地区：[1]中国电力科学研究院有限公司电网环境保护国家重点实验室,武汉430074 [2]国家电网有限公司,北京100031 [3]国网山东省电力公司电力科学研究院,济南250001

出　　处：《高压电器》2022年第2期42-49,59,共9页High Voltage Apparatus

基　　金：国家电网有限公司总部科技项目(特高压并联电容器装置用大容量优比特性电容器单元关键技术研究)。

摘　　要：本项目针对大容量优比特性电容器单元内熔丝保护技术,在分析内熔丝熔断电爆炸理论的基础上,以特高压交流工程用并联电容器单元BAM7.88-668-1W为研究对象,搭建了内熔丝最小熔断能量实验测试电路,对电容器单元用3种不同直径内熔丝的熔断特性进行了测试研究,通过记录熔丝熔断的典型波形,从能量转化、放电电流及熔断效果等方面进行了详细研究,试验结果表明:内熔丝长度为145 mm时,直径0.40、0.45、0.50 mm的内熔丝最小熔断能量分别在95、(107~147)、(139~183) J之间,而φ0.40×145、φ0.45×145、φ0.50×1453种型号内熔丝最小熔断能量计算值分别为98.9、125.2、154.6 J。实验结果与理论计算符合较好,达到预期目标。As for the inner fuse protection technology of capacitor unit with large capacity and superior ratio in this project,based on the analysis of the theory of fuse explosion of inner fuse,the experimental test circuit of minimum fuse energy of inner fuse is set up on the basis of the analysis of the theory of inner fuse explosion and with shunt capacitor unit BAM7.88-668-1W for UHV AC engineering as the study object. The fusing characteristics of three different diameters of capacitor unit are tested and studied. By recording the typical waveform of the fuse,the study is performed in detail from such three aspects as energy conversion,discharge current and fuse effect. The test results show that when the length of inner fuse is 145 mm,the minimum fusing energy of inner fuse with diameter of 0.40 mm,0.45 mm and 0.50 mm is between 95 J,(107~147)J and(139~183)J. While,the calculated value of minimum fusing energy of such three types as φ0.40×145、φ0.45×145、φ0.50×145 is 98.9 J,125.2 J and 154.6 J respectively.The experimental results are in good agreement with the theoretical calculation and reach the expected goal.

关 键 词：并联电容器 内熔丝 最小熔断能量 试验研究 

分 类 号：TM53[电气工程—电器]