METHOD AND SYSTEM FOR ON-LINE DYNAMICAL SCREENING OF ELECTRIC POWER SYSTEM

摘要

A system for on-line dynamic screening of contingencies comprising postulate d disturbances which an electric power system may experience, the system comprising a dynamic contingency screening program for evaluating a pluralit y of contingencies with a plurality of contingency classifiers based on the method of finding the controlling unstable equilibrium point of the power system known as the boundary of stability region based controlling unstable equilibrium point method by sequentially applying the contingencies to a network islanding problem classifier, SEP (stable equlibrium point) problem classifier, a large stability regions classifier, an exist point problem classifier, a ray adjustment problem classifier, an energy function problem classifier, a CUEP (convergence unstable equilibrium point) convergence problem classifier, and a controlling UEP(unstable equilibrium point) classifier to form a first group of stable contingencies and a second group of unstable or undecided contingencies, and a time-domain simulation program fo r determining which of the second group of contingencies are unstable.