METHOD AND DATA PROCESSING ARRANGEMENT FOR DETERMINING THE FREQUENCY, AMPLITUDE AND ATTENUATION OF AT LEAST ONE OUTPUT OSCILLATION IN AN ELECTRICAL ENERGY SUPPLY NETWORK

摘要

A method for determining a frequency, an amplitude and an attenuation of at least one output oscillation in an electrical energy supply network. A time window of predefined duration is used and momentary values for the output determined within the time window are used to determine the frequency, the amplitude and the attenuation of the at least one output oscillation. At least one further time window is used, wherein all the time windows are each of different duration. That time window, within the duration of which a predefined number of oscillation processes of the output oscillation under consideration falls, is used for determining frequency, amplitude and attenuation. The invention also describes a data processing arrangement.