Mitigación del desequilibrio de voltaje en redes eléctricas de distribución mediante la ubicación de restauradores dinámicos de voltaje

Abstract

Improving voltage profiles in distribution systems is essential to ensure a constant supply to users. This research analyzes the mitigation of voltage imbalance in distribution systems using dynamic voltage restorers. For this, a DVR was implemented in Matlab / Simulink where this system was integrated in two case studies. The first is shown within a system of a load which is directly connected to the voltage source and of which a fault is simulated between 0.03 to 0.07 s where the DVR comes into action and generates a compensation that gives a voltage signal equal to the original without the generation of harmonics. Later, the DVR is implemented in a 37-bus system where the filter and PI controller parameters are varied to adjust the compensation to the system performed. In this case, an imbalance was generated in one of the loads, which generated a voltage imbalance in the entire system. For this purpose, by implementing the DVR in the system, the imbalance was mitigated both in the applied load and in the entire system. In addition, a passive RLC filter was applied, which helped to eliminate most of the harmonics generated by DVR operation.