PERFORMANCE EVALUATION OF STATIC SECURITY ANALYSIS-METHODS

This paper describes a method for static security analysis based on a coordinated combination of PI methods, subnetwork solutions, compensat ion methods and sparse vector methods. The method is hybrid utilizing PI methods and contingency screening/analysis methods. This paper focu ses on the contingency screening/analysis method. It is capable of eff iciently handling PV/PQ bus type conversions and islanding conditions caused by contingencies. It also features an ''optimal'' combination o f computational procedures which yields the least execution time for a specified level of accuracy. The performance of the method is statist ically evaluated on large power systems. The results clearly illustrat e the superior performance of the method.