METHOD AND DEVICE FOR CONTROLLING LOSS COEFFICIENT OF CAPACITOR INPUTS Russian patent published in 2022 - IPC G01R31/12 G01R15/16 H01G4/35 

FIELD: electrical engineering.

SUBSTANCE: method for controlling capacitor inputs for the AC network is proposed, while: the AC network has the first, the second and the third phases (A, B, C), and capacitor input (2a, 2b, 2c) is correlated with each phase; at predetermined first time (t1), for each of these phases: for the first reference voltage, corresponding first vector (Ra(t1), Rb(t1), Rc(t1)) of the reference voltage is found, the lining voltage is recorded, and corresponding first vector (Va(t1), Vb(t1), Vc(t1)) of the lining voltage is found; at predetermined second time (t2), which lies after the first time, for each of these phases: for the second reference voltage, corresponding second vector (Ra(t2), Rb(t2), Rc(t2)) of the reference voltage is found; the lining voltage is recorded, and corresponding second vector (Va(t2), Vb(t2), Vc(t2)) of the lining voltage is found; for each of these capacitor inputs: change (ΔDa, ΔDb, ΔDc) of the loss coefficient is calculated depending on data of the first and the second vectors of the reference voltage and vectors of the lining voltage, as well as on the first and the second vectors of the reference voltage and vectors of the lining voltage, respectively, of the adjacent capacitor input; the change in the loss coefficient is compared with value (DA, DB, DC) of the tolerance; depending on the results of these comparisons of the loss coefficient, a control signal is created.

EFFECT: increased accuracy of control of capacitor inputs for AC networks.

19 cl, 5 dwg