Aspects on Power System Islanding for Preventing Widespread Blackout

When interconnected power system out of step occurs, it is imperative to detect it rapidly and islanding should be taken to prevent widespread blackout. This paper presents a review of the main aspects on power system islanding. Out of step detecting methods are classified to six categories. Islanding schemes are outlined according to graph partitioning, minimal cutset enumeration and generator grouping. In addition, four types of load shedding schemes after islanding operation are discussed. Synchronized phasor measurements and AI technologies will facilitate detecting of out of step and making adaptive islanding and load shedding scheme.