Investigating Transient Responses of IEEE 6 Bus Power System to Various Fault Types using PowerWorld Simulator

Year 2024, Volume: 8 Issue: 2, 137 - 151, 30.12.2024

Sami Melih Öztürk , Ahmet Çifci

https://doi.org/10.47897/bilmes.1565442

Abstract

The transient analysis of power systems is essential for understanding the dynamic responses and stability under fault conditions. This paper focuses on the transient analysis of the IEEE 6 bus power system using the PowerWorld Simulator, with the primary objective of investigating the system’s behavior under various fault conditions, including three-phase balanced faults, line-to-ground faults, line-to-line faults, and double line-to-ground faults. The IEEE 6 bus system, a standardized benchmark for testing power system algorithms, provides a simplified yet effective model for examining transient phenomena. Utilizing the Power World Simulator, this study models and simulates the fault conditions to assess their impacts on key parameters such as bus voltages, generator rotor angles, and generator voltages. By conducting a series of simulations, we aim to provide a detailed characterization of the transient response of the IEEE 6 bus system under each fault scenario. The results of our analysis reveal distinct patterns of system behavior for each type of fault. Three-phase balanced faults, being the most severe, significantly disrupt the stability of the system, causing considerable deviations in voltage and phase angles. Line-to-ground faults, although less severe, still pose substantial challenges, especially in terms of voltage stability at the faulted bus. Line-to-line faults primarily affect the phase voltages, leading to asymmetrical disturbances that propagate through the network. Double line-to-ground faults, which combine characteristics of line-to-line and line-to-ground faults, exhibit complex transient dynamics that test the system’s resilience and control mechanisms. Our findings underscore the necessity for robust protective measures and control strategies to mitigate the adverse effects of these faults. The study highlights the importance of fault location, fault type, and system configuration in determining the overall stability and reliability of the power system.

Keywords

Fault analysis, IEEE 6 bus system, PowerWorld simulator, transient stability

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