Transfomer terminal unit (TTU) is an intelligent fusion terminal equipment integrating functions such as distribution stations power supply and consumption information collection, electricity meter data collection, localized analysis and decision-making, and collaborative calculation,and so on. It is mainly used for power consumption information collection management, online monitoring of distribution transform, dynamic management of low voltage topology, lean line loss analysis, management of the reactive power compensation, blackouts fault analysis and identification, monitoring of charging piles, and distributed energy management.