Modeling considerations in static and dynamic voltage stability studies of shipboard power systems

ABSTRACT

Better modeling is a key issue to system analysis and emulating real system performances accurately. This paper addresses modeling considerations and approaches to be taken for voltage stability analysis. Two approaches, static and dynamic analysis, are often applied in voltage stability studies, static for small disturbance and dynamic for large disturbance. The characteristics of main power system components, such as generators, loads, transmission and distribution networks in both approaches have been discussed. Modeling approaches presented here will be extended to the Shipboard Power System (SPS). IEEE 9-bus test system is used to illustrate the procedures of a static approach. Three-phase and twelve-phase synchronous generators are taken as examples to explain the numerical integration method in dynamic modeling and validation. The time-domain simulation is performed to verify the generator modeling in PSCAD.

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INDEX TERMS

Keywords:
PSCAD, dynamic analysis, numerical integration method, static analysis, voltage stability