Design Study of Power Management System for Parallel Operation of Generator Set of a Ship's Diesel Electric Power Plant

Abstract

Through the 20 century and up to present day, ship’s diesel electric power plant have typically operated with an excess of parallel generator capacity online providing redundancy to ensure that all vital system have power in the casualty event. Power Management System (PMS) is most crucial system in the ship diesel electric propulsion plant. It in-charge to manage power generate by prime mover and being distributed to consumer in electric propulsion system. The PMS entails the integration of the ship’s electric plant and electric load management with ship operation and machinery system control as an automated control function. The parallel operation of generators will be introduced to get best performance of the PMS. The vessels that have this system are typically electrical ship such as cruise ship, LNG carrier and modern container ship. This thesis will highlight the parameters and methods that were used in the design of the PMS. The study involved the parallel operation of generators and electric propulsion plant in the system which are control system and other components. Control system are one the most important components in PMS to make sure the generating sets and power distribution are managed wisely by the system. Besides, the thruster is crucial component and major consumer in electric propulsion system and it should be managed cautiously because to prevent blackout occur. There a lot important parameter in PMS such as frequency, power, inertial time constant and others. The control system are used by the approach methods in design of the PMS to deliver all signals to consumers to ensure the power being distributed according to the operation of ship demand.