Ship electrical system simulation

Several ship systems were evaluated as part of the "HTS Benefits to Ship System" study funded by the U.S. Office of Naval Research (ONR) in 2004. A commercially available power system simulation software application called PSCAD (TM) was used to evaluate the dynamic response of the selected ship electrical systems. The generic, large combatant ship electric systems reported here consist of the following: Two 36.5 MW propulsion motors with their variable speed drives (VSDs) Two 36 MW generators with gas turbines Two 4 MW auxiliary generators for auxiliary loads. Each system studied employed rotating machines that were built using high-temperature superconductor (HTS) wires. The PSCAD software enabled modeling of electrical systems with full transient details to study the dynamic response of the electric system over a wide frequency range. The default models and standard features available in PSCAD served all the requirements. A number of fault and load scenarios were studied. The goal of this simulation work was to develop a model for studying the dynamic behavior of the ship electrical system. This goal was successfully achieved.