Low voltage distribution system is an intelligent distribution system that is developed according to the user's needs and follows the standard specifications of the distribution system. It has strong professionalism, high degree of automation, easy to use, high performance, and high reliability, and is suitable for low voltage distribution systems. Through telemetry and remote control, load can be reasonably allocated, optimized operation can be achieved, and electricity can be effectively saved. There are records of peak and low electricity consumption, providing necessary conditions for energy management. At the same time, electrical energy is measured separately by lighting socket electricity, power electricity, air conditioning electricity, and special electricity, providing a basis for energy conservation audits of enterprises and institutions. With the rapid development of the economy, energy scarcity and environmental degradation have attracted close global attention. Energy is an important foundation for the development of the national economy. In order to respond to the national call and follow the path of sustainable development, energy conservation and consumption reduction are the primary tasks. Among them, electricity consumption is relatively large among all energy sources, and unified management of electricity is particularly important. Only by accurately and reliably measuring electrical energy can we truly save it