500kV进口合成绝缘子芯棒脆断原因分析及对策  

Analysis and Countermeasures of Core Brittle Fracture of Imported Composite Insulator on 500 kV Transmission Line

作　　者：刘洋[1] 刘贞瑶[1] 周志成[1] 魏旭[1] 李鸿泽[2] 范晓东[3] 

机构地区：[1]江苏省电力试验研究院有限公司,江苏南京211103 [2]江苏省电力公司,江苏南京210024 [3]苏州供电公司,江苏苏州215000

出　　处：《江苏电机工程》2011年第2期25-27,共3页Jiangsu Electrical Engineering

摘　　要：通过对一起合成绝缘子芯棒脆断事故的分析以及同批次运行的500 kV进口合成绝缘子的抽样试验,分析了合成绝缘子芯棒脆断的原因,发现该绝缘子芯棒脆断主要是由于端部密封不良及界面结构设计不合理,造成酸蚀并最终导致芯棒机械性能下降而发生脆断,同时,对该类运行中合成绝缘子的使用提出了相应的对策,以保证电网的安全可靠运行。Through the study on the feature of fractured core of composite insulator in a certain accident and the sampling test of the imported composite insulator on the same lot operating on 500 kV transmission line,the reason of the core fracture of composite insulator is analyzed.The fracture reason is ascertained that the mechanical performance of core is degraded by acid erosion on account of poor sealing end and unreasonable interface design.At last,the countermeasures of such composite insulator in operation are given to ensure the safety and reliability of power system.

关 键 词：合成绝缘子 脆断 芯棒 硅橡胶 

分 类 号：TM216[一般工业技术—材料科学与工程]