A new technique for evaluating the severity of generator outage contingencies based on two-parameter continuation

This work presents a new and powerful two parameter (λμ) continuation technique for evaluating severe generator outage contingencies whether they correspond to saddle-node bifurcation points or breaking points, given a power system operating point, a load demand forecast and a generation dispatch forecast. Two algorithms for redispatching generation are designed with respect to pickup types - individual generators and whole areas. Furthermore, this paper explores the relationship between the power injection parameter of outage generators, μ, and the right eigenvector ν associated with the smallest eigenvalue. The technique has been tested on a large-scale power system with 19140 buses. With less than 3% relative error with different pickup types, the simulation results indicate that the proposed method is very robust, efficient and accurate for generator outage contingency evaluation of large-scale power systems.