Implicit - integration dynamics simulation with the GridPACK framework

Fast dynamics simulation of large-scale power systems is a computational challenge because of the need to solve a large set of stiff, nonlinear differential-algebraic equations (DAE) at every time step. This paper presents a new implicit-integration dynamics simulation application added to the GridPACK™ framework. This new dynamics simulation application uses implicit integration schemes and offers several features such as variable time-stepping capabilities, automatic network partitioning, and accurate handling of discontinuities. The implementation details of this new dynamics simulation application is discussed in this paper and performance results are presented for a large 12,000 bus network.