Researching Algorithms for Device Management of Load Balancing in Their Group Work

摘要

This paper investigates the control algorithms for a group of load balancing devices, installed in the distribution networks 0,4 kV. The relevance of the subject is due to the need to solve the problem of an uneven distribution of single-phase load in phases of a three-phase electrical network. As an object of computer simulation, a typical three-phase branched 0,4 kV electrical network was selected. The network under investigation contains 4 three-phase outgoing lines with single-phase consumers. The algorithm of independent and coordinated work of a group of devices is considered. In the first case, the choice of the method of connecting the outgoing lines to the source phases is made by the control unit of each device independently. In the second case, a single control unit for all devices is used. From the results of the study, it follows that the algorithm of a coordinated work allows reducing the voltage asymmetry coefficients for the zero and inverse sequences at the point the common connection of consumers to a greater extent as compared with the algorithm of independent operation. The difference in the median values of the obtained asymmetry coefficients does not exceed 3%.