110 kV变电站高压支柱瓷绝缘子断裂原因  

Reasons for fracture of high voltage ceramic post insulator in 110kV substation

作　　者：黄蓉 曹先慧 谢亿 彭碧草 王军 刘维可 李文波 HUANG Rong;CAO Xianhui;XIE Yi;PENG Bicao;WANG Jun;LIU Weike;LI Wenbo(Hunan Xiangdian Test&Research Institute Co.,Ltd.,Changsha 410004,China;Power Science Research Institute,State Grid Hunan Electric Power Co.,Ltd.,Changsha 410007,China)

机构地区：[1]湖南省湘电试验研究院有限公司,长沙410004 [2]国网湖南省电力公司电力科学研究院,长沙410007

出　　处：《理化检验（物理分册）》2023年第8期71-74,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：某110 kV变电站高压支柱瓷绝缘子发生断裂,采用宏观观察、孔隙性试验、扫描电镜和能谱分析、X射线衍射分析等方法对其断裂原因进行分析。结果表明:烧制工艺控制不当使绝缘子心部出现黄色区域;法兰水泥胶装部位存在气孔缺陷、环境温度骤变等也是导致绝缘子强度下降的原因。The high voltage ceramic post insulator of a 110kV substation fractured.The fracture reasons were analyzed by means of macroscopic observation,porosity test,scanning electron microscopy and energy spectrum analysis,X-ray diffraction analysis and other methods.The results show that the improper control of the firing process caused the insulator to appear yellow core.The pore defects in the flange cement mounting parts and sudden changes in ambient temperature were also the reasons for the decrease of insulator strength.

关 键 词：高压支柱瓷绝缘子 气孔 胶装缺陷 断裂 

分 类 号：TG115.2[金属学及工艺—物理冶金] TB30[金属学及工艺—金属学]