Research of power supply system modes with nonlinear and linear loads connected to different winding of the transformer

The analysis of the operation modes of power supply systems with nonlinear load connected to a transformer winding with the secondary winding and cleavage of the linear load and a capacitor bank connected to another transformers windings performed. The modes of daily variation of the linear load and the corresponding regulation of the capacitor bank power for a typical range of 110/10 kV transformers with a power of 25 SO MVA are considered. It has been established that the allocation of a nonlinear load to a separate bus section improves the quality of the voltage on the linear load buses and reduces the current overload of the capacitors with higher harmonics currents. It is shown that switching reactors in series with capacitors eliminates problems with the quality of voltage at the linear load.