Simulation analysis on performance of fast variable load for marine steam power system

Abstract

[Objectives] The fast variable load capacity of steam power system is a key technical index to determine the maneuverability of ships, which is of great significance to the safety and stability of marine navigation.[Methods] Simulation model of steam power system including of supercharged boiler,steam turbine unit,feedwater pumps and other equipments is established. Based on the experimental data,the stability and accuracy of the simulation model is verified. The dynamic performance of steam power system is simulated under fast rising and reducing load conditions.[Results] The calculation results show that a slow matching rate between turbocharger unit and boiler,which restricts the fast rising load capacity of the steam power system. Meanwhile,steam back brake of steam turbine unit is lack of ability,which restricts the fast reducing load capacity of the steam power system.[Conclusions] The research results can provide theoretical support for the design and optimization of the steam power system of a real ship