UNIQUE SOLUTION FOR DYNAMIC PARAMETERS IDENTIFICATION OF A SYNCHRONOUS MACHINE USING DC DECAY TEST

Abstract

Dynamic modelling of synchronous generators has an enormous significant in power system studies. The DC decay test is one of a basic conventional method applied for determining the dynamic parameters of synchronous machines. The conventional curve fitting methods yield to non-unique and inaccurate solutions depending on the initial guesses and nature of the numerical methods. In this paper, the test is performed on a conventional synchronous machine. A genetic algorithm-based method is then applied for identifying uniquely the parameters of a new fitness function yielding to most precise transient and normal operating results.