6kVF-C开关爆炸事故原因分析及处理

Reason analysis and treatment of explosion of 6 kV F-C switch

针对高压厂用母线的保护配置问题,阐述了1起600 MW发电厂厂用6 kV F-C开关爆炸的事故处理经过及6 kV母线装设快速母线保护的必要性。分析了该厂低电压配电系统继电保护存在的问题,提出了快速母线保护方案。实践验证,采用该方案可避免母线事故对设备造成的损坏。

Aiming at the protection configuration of the busbar for high - voltage power plant, this paper expounds the treatment process of an explosion accident of 6 kV F - C switch for 600 MW power plant and the necessity of rapid busbar protection for 6 kV busbar, as well analyzes the problems in relay protection for the low - voltage distri-bution system in this plant, and proposes the plan to bring in rapid busbar protection. The practice proves that this plan succeeds in avoiding the damage of equipment caused by busbar accidents.