Multicore simulation of an AC-radial Shipboard Power System

IET Electr. Syst. Transp.

2011

Abstract-An approach to partition power system simulations formulated in mesh currents as variables is presented. Time domain simulations of large-scale power systems are notoriously slow due to the system order and amount of time-varying components. A common approach to reduce simulation run-time is to partition power systems using Bergeron's travelling-wave model and to simulate the subsystems on a distributed computer. In this paper, power systems are partitioned using a new mesh tearing approach, and the subsystems distributed across the cores of a quad-core computer. A notional shipboard power system model was partitioned using the proposed partitioning approach, which is used to show how the simulation run-time reduces as a function of the number of partitions and number of power converters.

Section: Substep Dmentioning

confidence: 99%

“…13, which is based on the delta-ungrounded AC-radial SPS in [13], [14]. The power apparatus and nodes that comprise the power system model are given in Table I and Table II, respectively.…”

Section: The Power System Modelmentioning

confidence: 99%

Section: The Power System Modelmentioning

confidence: 99%

Section: Number Of Partitionsmentioning

confidence: 99%

See 2 more Smart Citations

Multicore simulation of an ungrounded power system

IET Electr. Syst. Transp.

2011

“…This model has characteristics of existing Navy shipboard power systems, but does not represent any particular system. The information to build this model was taken from [6][7][8][9][10][11][12][13][14][15][16][17][18], and was used to build a computer model in MATLAB/Simulink 2012b [19] and SimPowerSystems.…”

Section: Introductionmentioning

confidence: 99%

Multicore methods to accelerate ship power system simulations

2013 IEEE Electric Ship Technologies Symposium (ESTS)

Dufour

2013

Abstract-Two methods to partition and parallelize the simulation of large-scale shipboard power systems on multicore computes are demonstrated. The first method is node tearing, which is used for offline simulation. The second is the statespace nodal method, which is used for real-time simulation. Both methods are benchmarked against MATLAB/Simulink 2012b for speed and accuracy The simulation model is a notional shipboard power system having characteristics of ACradial, 450 V, 60 Hz, three-phase, delta-ungrounded power system. The parallel simulation results show speedups in excess of one order of magnitude and general agreement in accuracy.

Development of a multicore power system simulator for ship systems

2011 IEEE Electric Ship Technologies Symposium

Hebner

2011

Abstract-An important impediment to using widely available software to simulate the behavior of advanced power systems for electric ships is that the simulation time is too long to be practical. Consequently, the Center for Electromechanics at the University of Texas at Austin (UT-CEM) is developing a multicore power system solver to simulate large shipboard power systems. In its first year of development, the focus is on testing CEM's solver (CEMS) for accuracy. This paper presents an overview of the major traits of CEMS, and compares its simulation results to the well-known commercial power system simulator SimPowerSystems. Preliminary results show that accuracy is maintained and improved in specific test cases.