| The electric power system is an exposed man-made structure susceptible to wide arrays of disturbance. If not cleared, a lingering disturbance can plunge the system into the unstable mode in a fairly short time frame.;In this thesis, Source Node Expansion Algorithm based on Slow Coherency has been proposed to resolve unintentional islanding. The algorithm initiates expansion from source node, engulfs connected loads until desired power mismatch is met. It then terminates and optimal cutsets deduced from the Adjacency Matrix.;The proposed technique is tested on 14 and 37-bus systems to endorse its potency. The experimentation is carried out in the PowerWorld platform.;Index Terms: Unintentional islanding, Source Node Expansion, Coherency, Adjacency Matrix.;In distributed generation, a drawn-out perturbation can cause system components to operate under unacceptable conditions. When restoration controls fail to revive the troubled system, generators may lose synchronism causing them to swing haphazardly in groups. This crisis separates the power system into unbalanced regions called unintentional islands. |
