河北水利电力学院学报2025，Vol.35Issue(4)：14-21,8.DOI:10.16046/j.cnki.issn2096-5680.2025.04.003
超高压SF6断路器瓷套管炸裂事故分析
Analysis of Porcelain Bushing Explosion Accident in Ultra-high Voltage SF6 Circuit Breaker
摘要
Abstract
The porcelain bushing above 2.5m is usually fired in sections,and the cross-section is me-chanically treated to form a"V"shaped interface.Then,the upper,middle and lower single sections are integrally fired and connected with inorganic adhesive glaze at high temperature.The adhesive glaze and each section of the porcelain bushing melt and penetrate into each other to form a whole porcelain bushing.After the overall firing is completed,its mechanical and electromechanical properties shall be verified by visual inspection,dimensional inspection,ultrasonic flaw detection,high and low temperature cycle test,internal pressure load test and bending load test.This paper analyzes the reasons for the breaking(burst-ing)of the sectioned porcelain bushing of 500kV SF6 circuit breaker,comprehensively analyzes and dem-onstrates various factors affecting the electromechanical performance of the porcelain bushing of SF6 tank circuit breaker through the disassembly inspection and test detection of the porcelain bushing,and puts forward strategies and measures to improve the process quality of the porcelain bushing and ensure the per-formance of the porcelain bushing,which provides references for the scientific design and safe operation of SF6 tank circuit breaker.关键词
SF6气体绝缘/断路器/瓷套管/机械强度/"V"形接口Key words
SF6 gas insulation/circuit breaker/ceramic sleeve/mechanical strength/V-shaped inter-face分类
信息技术与安全科学引用本文复制引用
张宏伟..超高压SF6断路器瓷套管炸裂事故分析[J].河北水利电力学院学报,2025,35(4):14-21,8.基金项目
国家电网有限公司资助项目(SGCC52270414007Q) （SGCC52270414007Q）
