부산대학교 도서관

The three-phase load imbalance and asymmetric parameters in the low-voltage distribution network result in a certain degree of three-phase imbalance. The integration of single-phase distributed photovoltaics further exacerbates the imbalance and voltage violation risks. To address the issues of three-phase imbalance and voltage violation caused by distributed photovoltaic integration in low-voltage distribution networks, this paper investigates a method that combines intelligent reactive power compensators and DSTATCOM for control. The article first introduces the principle of voltage violation under photovoltaic integration. Then, it analyzes the balancing compensation principles of intelligent reactive power compensators and DSTATCOM, and proposes a suitable topology and control strategy for DSTATCOM integration in low-voltage distribution networks based on the characteristics of the distribution network structure. Finally, a simulation model is built in Matlab/Simulink, and the simulation results demonstrate that the proposed control technology effectively resolves the three-phase imbalance issues caused by distributed photovoltaic integration in low-voltage distribution networks.