A STATCOM with a Fuzzy Controller Improves Voltage Stability in a Microgrid-Connected PV System

Abstract

The Modern distributed power systems incorporate renewable energy sources, which may be used to meet energy demands. Therefore, microgrid-connected renewable energy systems will satisfy grid demand and lower carbon emissions, which will reduce global warming. In this study, a solar photovoltaic (PV) system for grid-connected applications is proposed. The new microgrid codes address many power quality concerns such as harmonics, transients, voltage fluctuations, flicker, voltage stability, and reliability when PV systems are linked with the grid. Voltage dips, imbalanced voltage, and negative sequence voltage are the primary sources of power quality difficulties in the grid. Disturbances in the grid, such as frequency changes, voltage sag, swell, and especially failures, have an impact on the performance of PV. The increase in the use of solar photovoltaics will have a substantial impact on the Indian electricity system. The primary goal of this research is to evaluate the performance of a microgrid-connected PV system employing STATCOM that employs dynamic reactive power compensation & voltage stability. A STATCOM can improve the quality and stability of the voltage by reducing the sag and swell in a PV system that is linked to the grid. This study uses a STATCOM to investigate balanced and unbalanced voltage sags and swells in a microgrid-connected PV system. A STATCOM is recommended to adjust for both positive and negative voltage sequences in order to improve voltage stability and quality.