高压电器2013，Vol.49Issue(9)：35-43,9.
500 kV复合绝缘子脆断事故研究与劣化机理分析
Fracture Fault Analysis and Aging Mechanism Study for 500 kV Composite Insulator
冉学彬 1鲁兹 2成立 2郭晨鋆 2关志成 2王黎明2
作者信息
- 1. 南方电网超高压输电公司天生桥局,贵州562400
- 2. 清华大学深圳研究生院能源与电工新技术实验室,深圳518055
- 折叠
摘要
Abstract
In this paper,a fractured 500 kV AC composite insulator,whose fracture characteristics differ from those of brittle fracture,is analyzed in order to identify the aging mechanisms involved and their causes.Several sheath punctures occurred along the insulator which apparently originated from inside the insulator.Removal of the sheath revealed weak adhesion as well as tracking along the sheath-core interface.Weak microscopic as well as macroscopic interfaces were observed.The core material was analyzed by means of FTIR identifying glass corrosion,ion exchange and hydrolysis as major degradation mechanisms.Based on the results of analysis a water induced aging process is proposed and recommendations for online monitoring of composite insulators with respect to interfacial aging are given.关键词
外绝缘/复合绝缘子/脆断/老化机理Key words
outdoor insulation/ composite insulator/ fracture/ brittle fracture/ aging mechanism分类
信息技术与安全科学引用本文复制引用
冉学彬,鲁兹,成立,郭晨鋆,关志成,王黎明..500 kV复合绝缘子脆断事故研究与劣化机理分析[J].高压电器,2013,49(9):35-43,9.
