Multilevel robust control method of power system nodes with flexible access of smart microgrid

In order to reduce carbon emissions and ensure the operation security and stability of smart micro grid after flexible access to power system, a multi-level robust control method for smart micro grid flexible access to power system nodes is studied. According to the overall architecture of smart micro grid flexible access to power system, the influence of smart micro grid flexible access on the voltage quality and frequency of power system nodes is deeply analyzed. On this basis, distributed robust voltage controller and distributed robust frequency controller are designed to realize multi-level robust control of power system nodes. The experimental results show that this method can control the voltage and frequency of each access node in the qualified range, and the multi-level robust control ability is better; This method has a fast response rate to power system node anomalies caused by smart microgrid flexible access; Connecting smart micro grid to the middle of power system feeder with the capacity of less than 80% can obtain better power system operation performance.