Fast noniterative algorithm based on polarized-system partitioning for transient stability simulation

Recently, more interests have been focused on the fast transient stability simulation in order to establish the countermeasures against the possible contingencies. This paper presents a fast noniterative algorithm based on polarized system partitioning for the transient stability simulation of power systems. A fast noniterative algorithm is developed by using the LU decomposition technique based on polarized-system partitioning. The proposed algorithm drastically reduces the computation time compared with the saliency-reflected noniterative algorithm (SRNI). The saving of computation time increases with the system size. The proposed algorithm is tested for various sample systems such as New England 39-bus system and 145-bus Ohio system with 50 generators. The results are compared with those obtained by the SRNI algorithm and the commercial program package CYME.