脱硫系统380 V开关越级跳闸原因分析及对策

Reason analysis of 380 V switch override in desulfurization system and its treatments

对某电厂380 V脱硫系统多次发生的母线电源进线开关越级跳闸故障进行了分析,确定越级跳闸原因为母线上负荷分配不合理以及断路器保护整定值不合理,重新分配脱硫系统380 V重要负荷并校核断路器保护整定值,提高了脱硫系统的可靠性。

The incident that a power plant’s 380 V desulfurization system busbar incoming switch override tripped multiple times was analysed.The main cause was determined that the load was improperly distributed and improper protection value setting.After redistributed the critical load and adjusted the setting valued,the stability of desulfurization system was increased.