With the rapid development of power electronics technology, the performance of electric propulsion ships has also developed rapidly. The electric propulsion ship has the advantages of good maneuverability, low noise, small vibration, flexible unit configuration and layout. The ship power station is the heart of the electric propulsion ship, and its stable and reliable operation plays a vital role in the safe operation of the ship. The power management system of the ship power station can control and control the start, parallel, disengagement and parking of the generator set, and also allocate the available energy reasonably to ensure the safety of the whole ship.