Comparative analysis of static var compensator and distributed generation installation on voltage profile. Analyze Static Var Compensator (SVC) vs. Distributed Generation (DG) for voltage stability & power loss reduction in Indonesia's grid. DG shows superior performance on IEEE 14-bus system.
In Indonesia, electricity is a basic need with demand that continues to grow. PT PLN (Persero) projects an increase in electricity consumption of 8.9% by early 2022, highlighting the urgent need to address frequent problems such as blackouts, power losses, and voltage sags in the power distribution system. Effective solutions, including Static VAR Compensator (SVC) and Distributed Generation (DG), have been proposed to improve voltage stability and reduce power losses. This study evaluates and compares the performance of SVC and DG on a standard IEEE 14-bus system under increased load conditions. Using power flow analysis in ETAP, we simulate the installation of SVC at 15.99 Mvar and DG at 20.58 Mvar on bus 9, which shows optimal results. The findings show that DG slightly outperforms SVC in improving voltage stability and reducing power losses, with a 0.16% greater voltage increase and a 3.2 MW or 17.3% reduction in power losses. These results indicate that although both devices meet PLN’s voltage standards and improve power system efficiency, DG provides a slightly superior improvement in overall system performance.
This paper presents a timely and relevant comparative analysis of Static Var Compensator (SVC) and Distributed Generation (DG) for improving voltage profiles and reducing power losses in electrical distribution systems, particularly addressing the growing electricity demand and associated problems in Indonesia. The study clearly identifies critical issues such as blackouts, power losses, and voltage sags, positioning SVC and DG as effective solutions. By focusing on a direct comparison of these technologies, the research provides valuable insights for grid operators like PT PLN (Persero) in their efforts to enhance system stability and efficiency. The methodology employs a standard IEEE 14-bus system, subjected to increased load conditions, and utilizes ETAP software for power flow analysis, which is a robust and widely accepted approach in power system studies. The specific sizing of SVC at 15.99 Mvar and DG at 20.58 Mvar, both strategically placed at bus 9 for optimal results, demonstrates a thoughtful application of these devices. The key findings are clearly articulated: DG exhibits a slight but measurable superiority over SVC, leading to a 0.16% greater voltage increase and a 3.2 MW (or 17.3%) higher reduction in power losses. These quantitative results offer concrete evidence for the performance differences between the two technologies under the simulated conditions. Overall, the study offers a clear and concise comparison that contributes significantly to the understanding of SVC and DG capabilities in mitigating common power system issues. The finding that both devices meet PLN's voltage standards but DG provides a marginally superior performance is an important distinction for practical implementation decisions. This research provides a valuable framework for PT PLN (Persero) and similar utilities to consider when planning future grid enhancements and addressing the challenges of increasing electricity consumption while maintaining system reliability and efficiency.
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