ABSTRACT: The present paper analyses the optimisation of the parallel operation of diesel generator (DG) systems on board dynamically positioned (DP) vessels, using the Kongsberg Challenger III model vessel as a reference platform. The research focuses on identifying the optimal balance between energy efficiency, reduction of pollutant emissions (CO₂, NOₓ, and SO₂), and the maintenance of an adequate power reserve (spinning reserve) to ensure navigational safety. The study adopts a simulation-based approach, employing linear interpolation to determine specific fuel consumption and conducting a comparative analysis of various load configurations. The results demonstrate that operating generators within the efficiency “sweet spot” (75–90% of rated load) maximises thermodynamic efficiency, reaching approximately 37%, while also preventing premature engine degradation associated with the wet stacking phenomenon. Furthermore, the study highlights the critical role of power management systems (PMS) in automating generator coupling, thereby ensuring enhanced operational stability under conditions of variable external loads.

KEYWORDS: Safety and Security in Sea Transportation, Dynamic Positioning (DP), Methods and Algorithms, Energy Efficiency, Ship power systems, Power Management System (PMS), Pollution and Environment Protection, Diesel-Electric Propulsion

REFERENCES