罐式断路器绝缘喷嘴检测技术研究  

Test Research on Insulation Nozzle of Pot Circuit Breaker

作　　者：骆国防 章学兵 陈洪涛 徐琴 熊祥鸿 袁加妍 虞鸿江 LUO Guofang;ZHANG Xuebing;CHEN Hongtao;XU Qin;XIONG Xianghong;YUAN Jiayan;YU Hongjiang(State Grid S Electric Power Research Institute,SMEPC,Shanghai 200437,China;StateGridQingpuPowerSupplyCompany,SMEPC,Shanghai 201799,China;Electric Power Research Institute,Yunnan Power Grid Co.,Ltd.,Kunming 650217,Yunnan Province,China)

机构地区：[1]国网上海市电力公司电力科学研究院,上海200437 [2]国网上海市电力公司青浦供电公司,上海201799 [3]云南电网有限责任公司电力科学研究院,云南昆明650217

出　　处：《电力与能源》2023年第5期486-489,共4页Power & Energy

摘　　要：罐式断路器是变电站(换流站)的关键设备,其主要作用是改变运行方式和配合继电保护装置快速切除故障.绝缘喷嘴作为罐式断路器的主要绝缘部件,其功能是保证压缩的灭弧气体通过,顺利熄灭电弧,实现断路器的分、合操作.分别采用X射线数字成像检测技术和工业电流互感器(CT)检测技术,对某500 kV罐式断路器绝缘喷嘴进行了入网质量检测.检测结果表明:X射线数字成像检测技术不能检出绝缘喷嘴内部的微小缺陷,而工业CT检测技术不仅能发现绝缘喷嘴内部微小缺陷,还能确定缺陷的位置和尺寸并对缺陷进行统计分析.工业CT检测试验结果显示:绝缘喷嘴内部易发生脱落部位主要集中在上端(端口直径较小一端)20~80 mm处;且缺陷体积在0~0.20 mm3的概率超过90%.The pot circuit breaker is the key equipment of substation(converter station),whose main function is to change the operation mode and cooperate with the relay protection device to quickly remove the fault.The insu lation nozzle is the main insulating part of the pot circuit breaker,whose function is to ensure the passage of the compressed arc extinguishing gas,to extinguish the arc smoothly,and to realize the split and joint operation of the breaker.X-ray digital imaging detection technology and industrial CT detection technologys are used to test the quality of a 500 kV canister circuit breaker insulation nozzle.The test results showed that the X-ray digital imag-ing detection technology could not detect the tiny defects inside the insulation nozzle,while the industrial CT de-tection technology could not only detect the tiny defects inside the insulation nozzle,but also determine the loca-tion and size of defects and perform statistical analysis of defects.Industrial CT test results show that the parts of the insulation nozzle prone to fall off are mainly concentrated in the upper end(the end of the port diameter is smaller)20~80 mm;And the probability of defect volume in the range of 0~0.20 mm is more than 90%.

关 键 词：罐式断路器 绝缘喷嘴 X射线数字成像检测 工业CT检测 

分 类 号：TM211[一般工业技术—材料科学与工程]