PRACTICALLY NEGATIVE EFFECTS OF EMERGENCY CONTROLS

摘要

Although apparently erroneous, negative effects on transient stability of emergency controls, such as generator tripping, load shedding and rapidly increasing excitation, follow natural laws. These important phenomena are uncovered, and their mechanisms are studied with extended equal-area criterion (EEAC) in this paper. The effects are quantitatively assessed, and their necessary and sufficient conditions are derived as well.