FIELD: electric power industry.
SUBSTANCE: invention relates to electric power engineering, in particular to formation of actuation parameters for protections with one supplied value. According to the invention, the network mode change is determined based on the values of the phase currents or voltages of the filter of orthogonal components, determined from the readings of the current instantaneous values of the currents or voltages, and according to the stored data of the previous mode, the protection settings are formed, which are adaptive to the load mode of the power system, directly in the protection terminal.
EFFECT: providing maximum sensitivity of protection in the whole range of operating modes of a power facility.
1 cl, 1 dwg
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