A fast voltage security assessment method via extended Ward equivalent and neural network approach

Adaptive boundary determination for network reduction in long‐term voltage stability analyses

“…However, one important point in stability analyses based on simulations is the simulation time. Various efforts have been made to reduce this time, which can be categorised as model reduction-based methods [8][9][10][11][12][13] and hardware-based methods [7,[14][15][16]. The methods of the latter category have tried to rearrange the mathematical model of the system in a way that the simulations can be parallelised for execution by employing powerful processors.…”

“…To this point, research on network reduction for voltage stability analyses have been supposed that boundary buses are fixed [10][11][12]. It is worth noting that in some references such as [12], which have a dynamic approach for simulation of long-term voltage instability, it has been assumed that the internal system is fixed and an equivalent is given for a given external system.…”