Steady-state analysis of shipboard power systems utilizing explicit component models

In this research, a new approach to analyze the shipboard power systems in the steady-state conditions is developed. This approach comprises of two main parts: model derivation and solution algorithm. The modeling basis for a component implemented in the research is described by two distinct models: a steady-state model and a transition model. The steady-state model consists of electrical and mechanical algebraic equations that best represents the system at equilibrium. The transition model calculates the initial conditions for transient simulation from the result of the steady-state initialization. Steady-state and transition models together provide more accurate initialization for transient simulation of the shipboard electrical systems. The system equations are solved by Nonlinear Block Gauss-Seidel method. This method is induced from the special structure of the equations that as there is no direct connection between the components connected to the different buses, the coupling is only through transmission lines and the bus voltages are coupled variables. This solution method enables to perform graphical analysis on the system equations for demonstrating the uniqueness of the solution point for normal operating conditions. This new approach provides a reliable and accurate solution procedure to calculate the steady-state operating point of the shipboard power systems.