METHOD FOR AUTOMATIC DETERMINATION OF FREQUENCY CHARACTERISTIC STEEPNESS OF AN ISOLATED POWER CONNECTION Russian patent published in 2020 - IPC H02J3/06 

FIELD: electric power engineering.

SUBSTANCE: for automatic determination of steepness of frequency characteristic of isolated power connection, measurements of load powers are performed, sum of powers of load nodes PS is determined, initial data are given: rated power of turbine equipment of power plants, rated power of power units of power plants, steepness of static characteristic of automatic controllers of rotation frequency of power units of power plants, indicator of approximation function of experimental or calculated data on changes of AC voltage frequency at emergency disconnection of power units at various values of reserve ratio, coefficient of regulating effect of load by frequency, information on the state of the generating equipment (included in the network / disconnected from the network). In addition, measurements of ambient air temperature at power plants are performed, values of rated power of power units of power plants for current ambient air temperature are corrected. Steepness of frequency characteristic is determined using given formulas.

EFFECT: high accuracy of automatic selection of control actions by complexes of anti-accident automation of isolated power connections.

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