Research and Application of Low Voltage Distributed Power Supply Control System

With the launch of the National Energy Administration's rooftop photovoltaic pilot construction in all counties and cities, power companies in various provinces and cities of the State Grid are facing severe safety management challenges. For example, distributed power sources such as photovoltaic and wind power are affected by natural weather, and their output is intermittent and difficult to control. Large-scale integration into the power system will have an impact on the power system, making it unable to operate normally, and even leading to power system collapse and damage to power equipment.Therefore, it is necessary to form a low-cost solution that meets the basic requirements of stable and safe operation of the power grid. In this paper, we propose a regulation scheme of low-voltage distributed generation, which uses the edge computing capability deployed in the distribution transformer fusion terminal, and the communication capability of power line carrier and the intelligent circuit breaker integrated with function fusion to realize the observation and control of distributed energy and electrical equipment. The proposed scheme has been piloted and verified in two typical power distribution areas in Shenyang, and the pilot application has achieved the expected goals.