This paper proposes a multi-bus flexible interconnection scheme to balance the power of multiple transformers in low-voltage distribution systems. Unlike feeder interconnection schemes that may lead to extra infrastructure cost and potential stability problems, the proposed scheme adopts transformer bus interconnection instead by using a multi-terminal voltage-source converter. With the integration of energy storage device, improved performance is achieved when the interconnection scheme is in effect. The basic configuration, operation principle and control strategy of the proposed scheme are presented. Finally, economic evaluation conducted on a practical case reveals the significant benefits obtainable from application of the proposed scheme.