FIELD: the invention refers to electric technique and may be used for anti-damage control over an electric system at arising in it of an asynchronous regime.
SUBSTANCE: The method allows calculate the coordinates of the end of the of impedance in vector in the system of coordinates received by turning in the complex plane of resistances on the calculated angle and transferring along the axes of real numbers on a prescribed value. Voltage in the electrical center of rocking is modeled and the diapason of the values of this voltage corresponding to the diapason of the angles of electric transmission substantially different from zero and including the value of 180o is controlled. The asynchronous regime is fixed at the output of the value of modeled voltage out of the set diapason if the symbol of voltage differs from the symbol of this voltage at the input into the prescribed diapason and the duration of passing through the established diapason prevails the prescribed value. The position of the electrical center of rocking is defined at the moment of changing of the symbol of the modeled voltage according to the outfit of the value of the coordinates of the end of the vector of impedance along the coordinate axis to one of the three prescribed diapasons. The number of cycles of the asynchronous mode is additionally calculated according to the moments of changing of the symbol of modeled voltage in the established diapason of values and operation of automatic equipment is formed at prevailing the number of the cycles of the prescribed setting.
EFFECT: the method allows increase selectivity and stability of functioning of automatic equipment, reduce the number of incorrect operations of the automatic equipment and increase the spectrum of controlled influences executed by this automatic equipment.
2 cl, 8 dwg
