Intelligent three-phase current balancing technique for single-phase load based on smart metering

This paper studies the problem of current balancing in a three-phase, low-voltage distribution network. We assume that the network has an automatic metering system that communicates using the power line carrier technique. Each meter reports the customer’s energy consumption and local current/voltage data to the central station at specified intervals. To maximize the efficiency of the grid, we wish to minimize the unbalanced current in the neutral phase. After framing this problem as a quadratic assignment problem, we use the “ant colony optimization” method to assign each customer to a phase. We confirm the effectiveness of the proposed method on an ensemble of simulated networks. Besides triggering point of high current relay is also decisive and should be consider in software commands output.