Preventive maintenance optimization for excitation system of bhumibol hydro power plant

Power plant reliability is highly related to the way maintenance tasks on system equipments are performed. From operation record of bhumibol hydro power plant between 2002–2006, the unplanned outage hours (uoh) of power plant are varied. The main factor of uoh is mostly caused by excitation system of power plant. Therefore, the maintenance system of excitation system has to be revised in order to improve of reliability of power plant.