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Voltage Regulation in Low-Voltage Distribution Grids with Reactive Power Control by Power Conditioning Subsystem Coordination

This paper proposes a novel voltage regulation method with reactive power control by power conditioning subsystem (PCS) coordination. The proposed scheme is an autonomous voltage regulation method aimed at residential customers in the low-voltage distribution group. This scheme divides the reactive power within the group by sharing the self-information of each PCS. Operational verification of the proposed method is achieved via experiments. Furthermore, the reactive power reduction effect of the proposed method is clarified by computer-simulated estimations. As a result, the average reactive power value of the proposed method is reduced by 70% compared to the constant power factor (0.95) method in a sunny day condition.