REACTIVE POWER COMPENSATOR CONTROL METHOD Russian patent published in 2023 - IPC H02J3/16 

FIELD: electrical engineering and electric power.

SUBSTANCE: used in devices for transverse reactive power compensation.

According to the method for regulating the reactive power compensator for a load connected through a power line to a power source, in which the complex values of the phase currents of the load are measured in wires relative to the phase voltages for the current half-cycle of the fundamental frequency, the direct load sequence current is determined, determine the values of the phase currents of the compensator, set the magnitude of the positive sequence voltage modulus on the loadUN, determine the values of active R, reactive Х of direct sequence resistance of the power line, the value of the positive sequence voltage modulus of the power source U₁, determine the values of active I_a and reactive I_r components of the direct sequence current of the load, determine the value of the reactive component of the direct sequence current of the reactive power compensator I1KU by the expression:

,

where: A = (R²+ X²); B = 2*(U₁- I_a* R - I_r* X) * X + 2 * (I_a* X - I_r* R) * R; C = -UN²+ (U₁- I_a* R - I_r* X)²+ (I_a* X - I_r * R) ² ; the value of which determines the values of the phase currents of the compensator, which are fed in the next period of the fundamental frequency to the cut of the wires connected in parallel, respectively, to the three phases of the load.

EFFECT: ensuring automatic maintenance of the specified voltage value in the load center due to compensating currents of the reactive power compensator.

1 cl, 3 dwg