A型脉冲反射超声在瓷支柱绝缘子缺陷检测中的应用  

Application of A-Type Pulse Reflection Ultrasound in the Defect Detection of Porcelain Post Insulators

作　　者：章学兵 骆国防 袁加妍 张武能 ZHANG Xuebing;LUO Guofang;YUAN Jiayan;ZHANG Wuneng(State Grid Qingpu Power Supply Company,SMEPC,Shanghai 201799,China;State Grid Electric Power Research Institute,SMEPC,Shanghai 200437,China;State Grid Electric Power Research Institute,Henan Electric Power Company,Zhengzhou 450052,Henan Province,China)

机构地区：[1]国网上海市电力公司青浦供电公司,上海201799 [2]国网上海市电力公司电力科学研究院,上海200437 [3]国网河南省电力公司电力科学研究院,河南郑州450052

出　　处：《电力与能源》2023年第4期376-378,428,共4页Power & Energy

摘　　要：作为换流站的重要设备,瓷支柱绝缘子对管型母线主要起机械支撑和电气绝缘作用。由于户外环境恶劣、制造工艺不良、安装调试不到位、运维检修不规范等,管型母线用瓷支柱绝缘子断裂故障时有发生,严重威胁换流站的安全稳定运行。对某±800 kV换流站新建工程交流滤波器场管型母线用瓷支柱绝缘子进行了安装调试阶段的入网质量检测,A型脉冲反射超声检测发现,有两只瓷支柱绝缘子存在缺陷,然后结合相关标准对缺陷进行了判定,结果一只瓷支柱绝缘子存在不允许缺陷,需要更换。根据瓷支柱绝缘子入网检测情况及日常运维状况,有针对性地提出了相关的改进建议,以提升瓷支柱绝缘子的投运质量,保障电网可靠稳定运行。As an important equipment of converter station,porcelain pillar insulator was mainly used for mechanical support and electrical insulation of tubular busbar.Due to bad outdoor environment,poor manufacturing process,inadequate installation and debugging,and non-standard operation and maintenance,breakage of pillar insulators for tubular busbars occured from time to time,which seriously threatened the safety and stability of converter stations.The grid access quality test was carried out on the porcelain pllar insulator used for the AC filter field pipe of the new project of a±800 kV converter station at the stage of the installation and commissioning.The A-type pulse reflection ultrasonic detection technology was adopted,and two porcelain pillar insulators were found to have defects.The defects were determined based on relevant standards,and the result was that one porcelain pillar insulator had disallowed defects and needed to be replaced.According to the grid detection and daily operation and maintenance of porcelain pillar insulators,relevant improvement suggestions were put forward to improve the quality of porcelain pillar insulators and ensured the reliable and stable operation of the power grid.

关 键 词：交流滤波器 管型母线 瓷支柱绝缘子 超声波检测 缺陷检测 

分 类 号：TM281[一般工业技术—材料科学与工程]