Faster-Than-Real-Time Power System Transient Stability Simulation Using Parallel General Norton with Multiport Equivalent (PGNME)

Sullivan, B., Shi, J., Mazzola, M., & Saravi, B. (2017). Faster-Than-Real-Time Power System Transient Stability Simulation Using Parallel General Norton with Multiport Equivalent (PGNME). Power and Energy Society General Meeting 2017. Chicago IL.

Abstract

This paper briefly overviews the existing effort in achieving Real-Time (RT) and Faster-than-real-time (FTRT) Transient Stability (TS) simulation, then demonstrates the capability of a novel Domain Decomposition (DD) method known as Parallel General Norton with Multi-port Equivalent (PGNME) to achieve the goal of FTRT TS simulation for large-scale and very-large-scale power systems. In particular, this paper focuses on demonstrating how PGNME can be utilized to significantly improve the computational speed of the solution of a large set of differential-algebraic equations that arise from the time-domain simulation of a large-scale power system. It is highlighted in the results section that by utilizing PGNME, FTRT performance is achieved using the lowest time step (1 millisecond) on the largest system (a 45552 bus Eastern Interconnect size system) compared with the previous work using similar modeling strategies. In particular, when using a 5ms time step, PGNME can solve a 10s simulation within 1s of real time, showing promise in terms of FTRT methods found in the literature.