METHOD FOR SYMMETRIZING CURRENTS OF A THREE-PHASE NETWORK 0,4 kV Russian patent published in 2019 - IPC H02J3/26 

FIELD: electrical equipment.

SUBSTANCE: method consists in that all consumers of electric power are divided into three groups and in each, by two single-position commutators of the phase currents, two of the three phases (A-B, B-C, A-C) are connected to the consumer. Equipment of the concentrator is equipped with an additional software module, using the logical-mathematical operations of which, using the data of the shipped energy for each phase, the average value of the phase currents of the power transformer is calculated for the preceding survey cycle, the most loaded phase is detected and the asymmetry value is determined, exceeding the established tolerance, switch one or more consumers to less loaded phases. Addresses of consumers to be switched are determined on the basis of minimizing the number of switches and minimizing the distances between them, and the switching of single-phase loads of consumers is synchronized with respect to the voltage in the network.

EFFECT: increased reliability of the symmetry of the phase currents of the three-phase line, a decrease in the volume of hardware, and an increase in the longevity of the contacts of the electric relays of the phase-current commutator.

3 cl, 3 dwg