Initializing a parameter estimation of a dynamic model.

摘要

A method of initializing a deduction, from estimated model parameters (a1, a2, ...) of a parametric model of an electric power system (1), the frequency and damping factor (f, ξ) of electromechanical oscillation mode of the power system (1), wherein the estimation of the model parameters (a1, a2, ...) is based on a series of measured values ​​(y21, y22, ...) of a second system quantity (y2) of the power system (1) and wherein said model parameters (a1, a2, ...) are estimated adaptively every time a new value (y2k) is measured in the second system quantity (y2), wherein the initialization method comprises - tuning a set of tuning parameters (tp2) for the subsequent estimation of the model parameters (a1, a2, ...), wherein the method further comprises - tuning the set of tuning parameters (tp2) by copying tuning parameters tion (tp1) previously tuned for estimating the model parameters (a1, a2, ...) based on a first system quantity (y1) of the electric power system (1), and - determining a conditioning gain (G2 ) to scale (y12, y22, ...) measured values ​​of the second system quantity (y2) prior to each adaptive estimates of the model parameters (a1, a2, ...).