METHOD OF CONTROL OVER OPERATING CONDITION OF TURBO-GENERATOR TO PREVENT OVERLOADING OF ITS COUPLING LINES WITH POWER SYSTEM AND TO DETERMINE ITS OPERATING CONDITION Russian patent published in 1994 - IPC

FIELD: electrical power engineering. SUBSTANCE: three successive measurements of power and slip are taken, equivalent of angle ϕ^* which unambiguously determine angle d_im is calculated by coupling of arbitrary generator with conditional center of power system for it. Deviation of equivalent of angle from settings corresponding to definite reserve of static stability is found. With positive value of equivalent of angle turbine is unloaded in proportion to deviation, with negative value of equivalent of angle load is disconnected in steps in proportion to deviation. With value of equivalent of angle less than value requiring action low loading of coupling is registered. Settings are determined in advance by dependence δ_im=f(ϕ^*) and operational condition of generator at reception or transmitting centers is determined by value ϕ^*. If at moment of first measurement of power slip is equal to zero or decrement of frequency is less than frequency corresponding to decrement of power or slip changes sign repeat measurement of power and slip are taken. EFFECT: provision for dynamic stability. 3 cl, 1 dwg