  Time-based dynamic models of cascading failures have been recognized as one
of the most comprehensive methods of representing detailed cascading
information and are often used for benchmarking and validation. This paper
provides an overview of the progress in the field of dynamic analysis of
cascading failures in power systems and outlines the benefits and challenges of
dynamic simulations in future grids. The benefits include the ability to
capture temporal characteristics of system dynamics and provide timing
information to facilitate control actions for blackout mitigation. The greatest
barriers to dynamic modelling of cascading failures are the computational
burden, and the extensive but often unavailable data requirements for dynamic
representation of a power system. These factors are discussed in detail in this
paper and the need for in-depth research into dynamic modelling of cascading
failures is highlighted. Furthermore, case studies of dynamic cascading
simulation of 200-bus and 2000-bus benchmark systems provide initial guidance
for the selection of critical parameters to enhance simulation efficiency.
Finally, cross-validation and comparison against a quasi-steady state DC power
flow model is performed, with various metrics compared.
