Abstract: A high proportion of distributed photovoltaics connected to the low-voltage distribution network can lead to power flow reversal and over-voltage.A flexible interconnection system in low-voltage transformer areas and power sharing between different transformer areas can realize photovoltaic consumption and effectively reduce the probability of power reversal and over-voltage.The coordination of inter-transformer power exchange is a core issue.Therefore, an adaptive control strategy is proposed based on an improved droop algorithm.By introducing a transmission factor and a commutation or correction factor, the smooth switching between the states of power output and reception of transformer areas can be achieved.The power transmission direction can be maintained according to the operating conditions of transformer areas and the DC system.By introducing a distribution coefficient, power can be allocated among substations as needed, and cross-transformer power sharing can be achieved without communication.The RT-LAB real-time digital simulation platform is used to verify the correctness and effectiveness of the proposed strategy.It builds the simulation model of the flexible interconnection system for low-voltage areas based on the construction of the demonstration point of a low-voltage flexible-direct transformer in a certain area of Ningxia.Simulation results verify that the proposed control strategy can effectively achieve power sharing across transformer areas.