| Summary: | As a result of rising load demand (particularly reactive load) and a lack of available generation sources, the power system is being operated close to its voltage instability point which may lead to voltage collapse. Therefore, to prevent voltage collapse, it is imperative to constantly monitor the power system’s voltage stability. This study uses Flexible AC Transmission System (FACTS) controllers to improve voltage stability in power systems. The goal is to assess how well voltage stability is improved by FACTS controllers. The MATPOWER toolbox in MATLAB is used to conduct load flow analysis on the IEEE 30 bus test system as a case study. Two voltage stability indices, the Fast Voltage Stability Index (FVSI) and the Novel Line Stability Index (NLSI) were used in the study to evaluate the system’s voltage stability. These indicators offer important details about the system’s capacity to sustain acceptable voltage levels under various operating circumstances. The simulation results reveal that the SVC-enabled shunt compensation method is the most successful at improving voltage stability. It is followed by shunt-series compensation, which uses the UPFC and exhibits notable improvements. Comparatively less successful at improving voltage stability is series correction, as represented by the TCSC. The result of this study provides insight into how FACTS controllers should be used to improve voltage stability. According to the findings, shunt compensation-based FACTS controllers perform better than series compensation-based controllers. This paper highlights the contribution to improving system stability by using FACTS devices. © 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
|
|---|