Patent ID: 6147475
Filing Date: 2000-11-14
Classification: G01R,H02J,Y02E

Abstract:
Method of predicting values of harmonic distortion in a power-factor compensated AC power system defined by, for each of one or more harmonics, a harmonic impedance and a damping resistance, the method comprising the steps of:(1) imposing a first step change of capacitance on said system,(2) determining as a result of said first step change, values of said harmonic impedance for respective said harmonics;(3) determining from said harmonic-impedance values, values of said damping resistance for respective said harmonics; and(4) determining from corresponding said harmonic-impedance and damping-resistance values, values of an electrical load parameter for respective said harmonics for a second, as yet unimposed, step change of capacitance.