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A Partitioning Approach for the Parallel Simulation of Ungrounded Shipboard Power Systems using Kronís Diakoptics and Loop Analysis

Fabian M. Uriarte and Karen L. Butler-Purry

Summer Computer Simulation Conference 2007 (SCSC 2007)
San Diego, California (USA), July 15-18, 2007


This work seeks to determinate whether the transient simulation on two PCs employing diakoptics to partition short cables is better, flop-wise, than using one PC─even for a small network. A methodology for the parallel simulation of a shipboard power system coupled by short lines is presented. Loop analysis, suggested by the nature of ungrounded power systems, is applied to formulate and solve the system of equations. An approach developed by G. Kron is utilized to partition a lineís capacitance to produce isolated sub-networks, which sets up the system for parallel simulation. Upon comparing simulation results from the un-partitioned and partitioned networks and on the basis of Kronís diakoptics, it is concluded that transient simulation using two PCs is better, flop-wise, than using one PC.

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