Abstract:

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.

Key words:

desulfurization system；incoming switch；override trip；breaker；load distribution, protection setting