METHOD FOR ON-LINE DYNAMIC CONTINGENCY SCREENING OF ELECTRIC POWER SYSTEMS

摘要

A method for on-line dynamic contingency screening of electric power systems employs a sequence of contingency classifiers (14), which are based on a method for finding the controlling unstable equilibrium point of the power system known as the boundary of stability region based controlling unstable equilibrium point method (BCU method). Dynamic security assessment of the power system is accomplished by evaluating the power system's response to a plurality of postulated disturbances known as contingencies. The BCU classifiers (14) determine which of these contingencies are definitely stable, and require no further analysis. Other contingencies (34) which are either classified as being unstable or undecided are then applied to a time-domain simulation program (16) to determine if they are in fact unstable, and therefore warrant further action.