Research on Voltage Sag Suppression Method Based on Improved Sparrow Optimization Search Algorithm

In view of the increasing proportion of sensitive loads (SL) such as high-speed computers and frequency converters in the power system, in order to effectively improve power quality, a hybrid configuration and optimization method of Shunt Capacitor Bank and Distribution Generator (DG) considering the severity of voltage sag of sensitive loads is proposed, while taking into account the effect of system voltage sag management. Firstly, considering the impact of voltage sag amplitude and duration on sensitive loads, the effects of both amplitude and duration are integrated to quantify the severity of the consequences of sensitive loads being affected by voltage sag; Next, with the goal of reducing the active power loss and the severity of sensitive load voltage in the power system, a joint optimization configuration model for SCB and DG is constructed, and an enhanced swarm intelligence optimization algorithm that improves the sparrow search algorithm is proposed to optimize the joint model; Finally, the proposed optimization method was validated by selecting the IEEE 33-node distribution network system for simulation, results show that the method proposed in the paper can provide effective reference for modern power grid energy quality management.