±1100 kV复合支柱绝缘子抗弯性能试验研究  

Study on the Flexural Behavior of ± 1 100 kV Composite Post Insulators

作　　者：刘海龙 程永锋[1] 卢智成[1] 朱祝兵[1] 李圣[1] LIU Hailong;CHENG Yongfeng;LU Zhicheng;ZHU Zhubing;LI Sheng(China Electric Power Research Institute,Beijing 100192,China)

机构地区：[1]中国电力科学研究院,北京100192

出　　处：《电瓷避雷器》2018年第5期207-214,共8页Insulators and Surge Arresters

基　　金：国家电网公司科技项目(编号:GCB17201500063)

摘　　要：为研究复合材料支柱绝缘子的抗弯性能,对±1 100 kV实心复合支柱绝缘子进行了包括弹性变形阶段直至塑性变形阶段的全过程弯曲试验,重点研究了该复合支柱绝缘子的弹性模量分布、法兰胶装部位的弯曲刚度分布以及该支柱绝缘子的弯曲破坏模式。试验结果表明:构成该支柱绝缘子的6根单节绝缘子的弹性模量分布比较离散,介于(40. 9~75. 9) GPa;各法兰胶装部位的等效弯曲刚度也存在较大差异,其中下数第二节支柱绝缘子下法兰胶装部位的等效弯曲刚度最小,是该支柱绝缘子的薄弱环节;弯曲负荷作用下,复合支柱绝缘子的变形包括弹性变形阶段以及塑性变形阶段,支柱绝缘子的破坏模式表现为法兰胶装部位的破坏。To study the flexural behavior of composite post insulators,bending tests of a ± 1 100 kV solid core composite post insulator,including elastic deformation stage and plastic deformation stage,were conducted. The elastic modulus distribution of the post insulator,the bending stiffness of the insulator flange adhesive joints,as well as the failure mode of the insulator were studied. Test results show that the elastic moduli of the 6 single insulators that constituting the whole post insulator fluctuate from 40. 9 GPa to75. 9 GPa. The difference between the equivalent bending stiffness of the flange adhesive joints is relatively large,in which the second part（ from insulator bottom）,with the smallest bending stiffness,is the weakest part of the whole post insulator. Under bending load,the deformation of composite post insulator consists of elastic deformation stage and plastic deformation stage,and the failure mode of the post insulator is the failure of its flange adhesive joints.

关 键 词：复合材料 支柱绝缘子 弯曲试验 弯曲破坏 

分 类 号：TM216[一般工业技术—材料科学与工程]