FIELD: measurement equipment.
SUBSTANCE: invention is used in the field of power engineering. According to the method each value measured using the vector measuring instrument, is bound to a reference value with generation of the normalised measured value, for each measured value the threshold indicating value is assigned, starting from which a critical state of the power network occurs in the respective location of measurements, each threshold value is bound to the reference value with generation of normalised threshold value, from each normalised threshold value and related normalised measured value, the normalised difference value is determined, the normalised difference values with coinciding time stamps are statistically processed, on the basis of the statistical result a state function is formed, which is displayed in the device (12) of the power network control centre.
EFFECT: simplification and improvement of reliability of the method in case of large number of measurement location in a power network.
12 cl, 5 dwg
