FIELD: electrical engineering.
SUBSTANCE: present invention relates to analysis of electric power quality in an electrical network. Method of analyzing quality of electric power in a three-phase electrical network includes the following stages, where: measured is (E1) set of electric values, herewith the set contains one electric value per each phase; formed is (E2) spatial vector basing on an instant 3D conversion of the set of measured electric values; determined is (E3) set containing a parameter characterizing the quality of electric power in the three-phase electric network depending on the time-dependent spatial vector calculated in the sliding window.
EFFECT: technical result is the possibility to perform a total three-phase measurement of electric power quality in a three-phase network.
17 cl, 4 dwg
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