FIELD: electrical engineering; relay protection and automation.
SUBSTANCE: on the basis of the auxiliary signal obtained from the phase electrical quantities at the measurement site, the frequencies of the components close to the industrial one are determined. Allows to select the components of the read frequencies from the phase electrical quantities at the measurement site and convert them into complex current and voltage signals of a direct sequence of the read frequencies at the measurement site, and then, using the model of the controlled area, taking into account the signal frequencies, into similar complex signals at the end of the controlled area.
EFFECT: enhancement of the accuracy of detecting the asynchronous mode and the electrical centre of the oscillations of the electrical network.
5 cl, 14 dwg
