Abstract

Offline electromagnetic transient (EMT) simulation is a very time-consuming activity for large-scale and complex power systems. Hydro-Québec (HQ) is involved in the development of EMT simulation tools, one of which can operate both in real-time (RT) and offline. This software heavily relies on parallel processing to achieve high-level performance. However, the offline mode is currently limited as it targets only single system image computers. As the offline mode uses the Message Passing Interface (MPI) standard to implement its parallel processing, porting the offline mode to PC clusters is the logical step to increase the offline simulation capabilities of HQ EMT simulation software.This paper evaluates the performance of different communication fabrics for the execution of offline EMT simulation operating in parallel with MPI. The performance metrics used for this evaluation are first discussed. The evaluated communication fabrics are then presented and tested with an offline simulation of the HQ power transmission system.

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