Performance Studies for a Diakoptics-based Partitioning Approach for Power System Simulation

Performance studies of partitioned power system simulations on multicore computer are presented. A partitioning approach developed by the authors was used to speed up the simulation of a shipboard power system. The system was torn from its capacitor loops and simulated as subsystems on a quad-core computer. Several performance metrics are presented to assess the performance of this simulation approach: speed gain, accuracy, and core impact. Results from several case studies show the general trend of each performance metric and show that the run-time of large-scale simulations can reduce three orders of magnitude if all cores are used.Center for Electromechanic

Configuration Validation Using ATP Simulation For An Automatic Shipboard Power System Restoration Method

Abstract – When a fault occurs in power systems, protective devices detect fault areas and disconnect the faulted sections of the network by opening circuit breakers, fuses etc.. Some loads become unavailable after the fault and should be reenergized, as quickly as possible, after the fault has been isolated. The re-energizing procedure is called service restoration. In Navy shipboard power systems (SPS), the automated reconfiguration for service restoration is a new focus area of research. The main objective of restoration on the SPS is to restore as much out-of-service load as possible by reconfiguration with priority given to critical loads. Once the switching actions to restore a load have been determined, the next step is to make sure that there are no operating constraint violations because of those switching actions. To check for constraint violations, line flows and voltage at each node need to be determined via a Load Flow. In this paper a method using ATP simulation, during runtime, to determine if the suggested switching actions for restoring loads violate any operating constraints, have been presented