TY - JOUR
T1 - Speeding Up AC Circuit Co-Simulations Through Selective Simulator Decoupling of Predictable States
AU - López, Claudio David
AU - Cvetković, Miloš
AU - Palensky, Peter
PY - 2019
Y1 - 2019
N2 - Co-simulation has become increasingly popular as a tool for dealing with the unprecedented complexity of modern engineering systems, such as electrical power systems and the AC circuits that compose them. Co-simulation is useful when migrating the models of each subsystem to a single monolithic simulator is either impractical or impossible, and the need for understanding the interactions between the subsystems does not leave room for model simplifications. However, co-simulation can suffer from long execution times, caused by the overhead introduced by exchanging variables between simulators. In this paper, we propose a method that mitigates this overhead by decoupling the simulators whenever their inputs become predictable. We applied this method to the co-simulation of an AC circuit composed of two subsystems and obtained speedups of up to 39% with errors that remain around 1% most of the time. Although questions regarding the scalability of the method persist, these results indicate that the method has the potential to make co-simulation an even more valuable tool for the user.
AB - Co-simulation has become increasingly popular as a tool for dealing with the unprecedented complexity of modern engineering systems, such as electrical power systems and the AC circuits that compose them. Co-simulation is useful when migrating the models of each subsystem to a single monolithic simulator is either impractical or impossible, and the need for understanding the interactions between the subsystems does not leave room for model simplifications. However, co-simulation can suffer from long execution times, caused by the overhead introduced by exchanging variables between simulators. In this paper, we propose a method that mitigates this overhead by decoupling the simulators whenever their inputs become predictable. We applied this method to the co-simulation of an AC circuit composed of two subsystems and obtained speedups of up to 39% with errors that remain around 1% most of the time. Although questions regarding the scalability of the method persist, these results indicate that the method has the potential to make co-simulation an even more valuable tool for the user.
KW - AC systems
KW - co-simulation
KW - electromagnetic transient
KW - power systems
KW - simulation
UR - http://www.scopus.com/inward/record.url?scp=85064808641&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2019.2907773
DO - 10.1109/ACCESS.2019.2907773
M3 - Article
AN - SCOPUS:85064808641
SN - 2169-3536
VL - 7
SP - 43004
EP - 43017
JO - IEEE Access
JF - IEEE Access
M1 - 6287639
ER -