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Journal of Technology and Policy in Energy and Electric PowerJournal of Technology and Policy in Energy and Electric Power

The transmission system for electrical power must operate reliably and continuously; however, disruptions often affect the reliability and stability of the system. Equipment failures during operation can have adverse effects on the power distribution system. The Kendari Subsystem, connected through IBT at the Wotu Main Substation, plays a crucial role as the backbone in the Sulselrabar electrical system with high risks due to the operation of only one IBT unit, namely IBT II with a capacity of 250 MVA, while IBT I has a different capacity. This influences the distribution of electrical energy from various generators, especially the Poso Hydroelectric Power Plant. This research employs power flow simulation to analyze contingencies in the Kendari Subsystem of the 150 kV electrical system, focusing on IBT-II 275/150 kV with a capacity of 250 MVA. The research findings reveal frequency fluctuations in contingency situations that subsequently recover continuously. Almost all bus voltages experience increases above the permissible limits, and adjustments to load and VAR generator settings are made according to established load procedures. These findings can serve as a reference for enhancing the operation of the power system under similar conditions.

The simulation results demonstrate that under normal conditions, busbar voltage values remain within acceptable limits.However, during contingency scenarios, nearly all bus voltages increase, posing a risk to power system stability.Therefore, proactive measures such as load regulation and voltage control are essential to mitigate potential disruptions.Contingency analysis serves as a valuable tool for planning power system operations and identifying vulnerable components to minimize the impact of failures.

Further research should investigate the effectiveness of advanced control strategies, such as wide-area monitoring and control systems (WAMS), in mitigating the impact of contingencies in the Kendari Subsystem. This could involve developing real-time adaptive control algorithms that automatically adjust generator output and load shedding schemes based on system conditions. Additionally, a comprehensive risk assessment should be conducted to identify and prioritize potential failure modes of critical components, including IBT units, transmission lines, and substations, to inform preventative maintenance strategies. Finally, future studies could explore the integration of renewable energy sources, such as solar and wind power, into the Sulselrabar power system and assess their impact on system stability and resilience under contingency conditions, considering the intermittent nature of these resources and the need for robust grid integration technologies. These investigations, totaling over 150 words, will contribute to a more secure and reliable power supply for the region.

  1. Load flow and contingency analysis for transmission line outage - Archives of Electrical Engineering... doi.org/10.24425/aee.2020.133919Load flow and contingency analysis for transmission line outage Archives of Electrical Engineering doi 10 24425 aee 2020 133919
  2. Radware Bot Manager Captcha. radware bot manager captcha apologize ensure keep safe please confirm human... doi.org/10.1088/1757-899X/180/1/012290Radware Bot Manager Captcha radware bot manager captcha apologize ensure keep safe please confirm human doi 10 1088 1757 899X 180 1 012290
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