Abstract

As the three-phase four-wire system is used in power transmission and distribution in our country, the single-phase load is the most part of power consumption. The three-phase imbalance of voltage and current on the outlet side of transformers may occur due to the unexpectedly increase or decrease of the load in a certain phase of the low-voltage distribution network. This phenomenon will reduce the service time of the equipment and the power quality of the power supply. A multiple population genetic algorithm (MPGA) is proposed in this paper to treat this problem. Intelligent fusion terminal (IFT) is used as the hardware application platform to communicate with phase-change switch in order to execute the optimal strategy, the three-phase current of the load side would be balanced after the strategy is executed. An example is simulated with MATLAB to show the effectiveness of MPGA.

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