METHOD FOR AUTOMATIC CONTROL OF ROTOR ROTATION FREQUENCY OF SYNCHRONOUS GENERATOR AND CONTROLLER FOR ITS IMPLEMENTATION Russian patent published in 2024 - IPC H02P27/06 G05B13/02 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used for automatic control of synchronous generator rotor speed. Technical result is achieved when using the method, which consists in the fact that in the synchronous generator rotor speed controller with a proportional-integral-differential control algorithm, the load angle of the synchronous machine δ is measured using a sensor, signal from which is transmitted to microcontroller with predictor time constant determining unit, signal from which is multiplied by the signal of the linear predictor, which is connected in series to the electronic amplifier. Time constant of the predicting element is set as the period of natural oscillations of the rotor of the generator from the ratio where ƒ_p is frequency of natural oscillations of generator rotor, Hz, ω₀ is rated angular frequency of rotation of generator rotor, rad/s, T_je is equivalent constant of mechanical inertia of unit, s, – synchronizing power, p.u., where E_q is generator EMF, p.u., U_g is generator voltage, p.u., X_d is inductive resistance of the generator along the longitudinal axis, p.u., δ is generator load angle (angle between electromotive force and generator voltage). Controller for implementing the method comprises an algebraic adder, a control element with PID control, a predictive element, as well as in-series connected unit for calculating the frequency of natural oscillations of the generator rotor and the unit for calculating the time constant of the predictive element. Input of the unit for calculating the frequency of natural oscillations of the generator rotor is connected to the output of the load angle signal of the synchronous generator. Output of the unit for calculating the time constant of the predictor is connected to the second input of the predictor.

EFFECT: higher accuracy of control.

2 cl, 6 dwg