METHOD OF VOLTAGE CONTROL AT SUBSTATION AT ONE-SIDED SUPPLY OF ALTERNATING CURRENT NETWORK WITH UNREGULATED INSTALLATION OF REACTIVE POWER COMPENSATION Russian patent published in 2020 - IPC H02J3/18 B60M3/02 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electric engineering, in particular, to traction power supply systems of railway transport. Measuring and computing unit is introduced, which measures current and voltage and calculates active and reactive input power of traction winding, and design unit, which calculates voltage at CU. At that, adjustment of the compensation unit power is carried out by means of OLTC of the supplying substation transformer. If voltage U_cu>29 kV, OLTC reduces voltage on transformer so that U_cu=28–29 kV, and if U_cu=27–28 kV, then OLTC stabilizes voltage on transformer at level 25–26 kV, and if voltage on CU buses is set to 27 kV and lower, then voltage on transformer U_tr stabilized at level of 27–28 kV.

EFFECT: technical result consists in improvement of reliability of power supply due to normalization of voltage in traction network at any traction load.

1 cl, 1 dwg