Carry out in-depth research on the synergistic development of low-carbon technologies and power distribution networks in the building sector, focusing on the impact mechanisms of distributed photovoltaic power generation, heat pump systems, electric vehicle charging, and other new types of energy-using equipment on low-voltage power distribution networks in residential areas.Through the analysis of power load characteristics, assessment of the carrying capacity of the distribution network and optimal allocation of multiple energy-using devices, we will construct a regional energy system solution adapted to the future low-carbon development of buildings, and help the transformation of building energy systems into cleaner and smarter ones.