METHOD FOR VOLTAGE AUTOMATIC BALANCING IN THE ELECRIC NETWORK

摘要

A method for voltage balancing in the electric network, according to which the transformation factor is changed depending on secondary winding voltage deviation from the preset value which is changed depending on a compensation signal. A method of multicriteria optimization is used. Basing on measured values of input voltages and currents for every phase a transformation factor is calculated and a command for regulation of every phase is formed. Values of transformation ratios are calculated in such a way that values of voltage deviation and voltage nonsymmetry at low-voltage buses will be optimal.