METHOD OF BALANCING OF TRACTION-FEEDING TRANSFORMER LOAD Russian patent published in 2011 - IPC H02J3/26 

FIELD: electricity.

SUBSTANCE: substance of method consists in distribution of highest load of lagging or leading phases of contact network at non-loaded phase of traction-feeding transformer. At that the highest capacity of one of phases of contact network is identified, voltage picked up from non-loaded phase of traction-feeding transformer is rectified and converted with the help of inverter driven by according phase of contact network, and step-up transformer into sinusoid voltage with frequency equal to frequency of the main harmonic of network, and specified voltage is supplied to according phase of contact network. Loading of non-loaded phase of traction-feeding transformer is carried out via rectifier and inverter, only at one phase of contact network, which makes it possible to transfer electric capacity to that phase of contact network, in which unit of contact network capacities comparison has identified the highest capacity.

EFFECT: increased efficiency of using capacity of traction-feeding transformer, reduced volumes of distortion capacity generation in the form of active power by reverse sequence and active power by high harmonics.

2 dwg