800kV换流站交流滤波场断路器套管炸裂事故分析

Accident Analysis of Breaker Casing Burst in 800kV Converter Station AC Filter Field

介绍了2012年6月15日江苏同里±800kV直流输电换流站滤波场发生断路器套管炸裂事故的经过,通过分析后台故障录波信息和保护动作信息,现场解体断路器,找出事故的主要原因是5612号断路器C相灭弧室传动箱中的球墨铸铁拐臂断裂,导致电源侧灭弧室分闸后击穿,套管发生粉碎性炸裂。在总结教训的基础上,提出了从制造、监造、质保、运输、验收等方面加强管理的整改措施和建议,以确保特高压输电线路安全运行。

This paper introduces the circuit breaker tube burst accident occurred on June 15, 2012 in the AC fiiter field of Jiangsu Tongli ± 800 kV DC transmission converter. Through the analysis of fault recorder information and protective action information, a＇well as the circuit breaker disintegration, to find out the main reason of the accident is the 5612 circuit breaker phase C crank arm fracture. The power side interrupter casing comminuted burst. Based on summarizing the lessons, put forward from the manufacturing, inspection, quality assurance, transportation, acceptance, strengthen the management of the improvement measures and suggestions, in order to ensure the safe operation of high voltage transmission line.