Heuristic analysis and contingencies classification of case study IEEE 14-bus

The main issues in security assessment are the fast identification of the set of critical contingencies and their evaluation related to the severity level. This paper presents a simple heuristic method that can identify each state of the system and classify the contingencies in order of severity. Considering the multiple faults which can affect the margin of security of electrical network, transient stability is analyzed for different load and generation conditions. The critical clearing time is calculated by using the numerical method. We performed the IEEE-14 bus system using the well-known software EUROSTAG.