ZHENG Cheng-shan, MA Gang. Cause study and countermeasures for core rod brittle fracture of suspension composite insulators on 220kV Ping-He line[J]. 2008, 28(6): 38-40.
ZHENG Cheng-shan, MA Gang. Cause study and countermeasures for core rod brittle fracture of suspension composite insulators on 220kV Ping-He line[J]. 2008, 28(6): 38-40.DOI:
220kV坪核线复合绝缘子芯棒脆断原因分析及对策
摘要
通过对220 kV坪核线复合绝缘子芯棒脆断造成相间短路事故的原因分析
指出其主要原因是耐张绝缘子使用单串且没有安装均压环连接方式的设计不合理
以及早期生产的复合绝缘子存在产品制造缺陷
芯棒不耐酸等原因所致。提出采用新工艺及材料制造的复合绝缘子
采用双串带均压环设计
预防芯棒脆断及造成掉线相间短路事故。
Abstract
The interphase short circuit caused by core rod brittle fracture of suspension composite insulators on 220kV Ping-He line was analyzed.Strain insulators with single string
connection design without grading ring
early production composite insulators with manufacturing defects
and acid nonresistant core rod are main causes responsible for the fault.Suggestions that produce composite insulator with new process and design insulator with double strings and grading ring were given to prevent core rod from brittle fracture and interphase short circuit.