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Optimal Design Power System Stabilizer Using Firefly Algorithm in Interconnected 150 kV Sulselrabar System, Indonesia

Muhammad Yusuf Yunus(1*), Muhammad Ruswandi Djalal(2), Marhatang Marhatang(3)

(1) Department of Mechanical Engineering, Energy Conversion Engineering, State Polytechnic of Ujung Pandang, Indonesia
(2) Department of Mechanical Engineering, Energy Conversion Engineering, State Polytechnic of Ujung Pandang, Indonesia
(3) Department of Mechanical Engineering, Energy Conversion Engineering, State Polytechnic of Ujung Pandang, Indonesia
(*) Corresponding author



Power System Stabilizer (PSS) is an additional control equipment that is capable of improving system stability by providing an additional signal to excitation equipment. The PSS provided additional damping function to the generator when an interruption occurred. The PSS uses proper coordination required to achieve good performance. In a real application, determination of PSS parameters is usually conducted by using trial and error method (Conventional Method). However, it was very difficult to obtain optimal parameters using this method. To resolve this problem, one of the Intelligent Methods for optimizing PSS parameters was proposed. Firefly algorithm is one of the intelligent methods inspired from the behavior of Firefly. The results were compared between systems: 1) without PSS and 2) with PSS by using trial & error method. From the analysis obtained, it was generated that after the installation of PSS, the oscillation occurred can be prevented and overshoot in oscillations can be reduced. Also, this process can also improve settling time and critical eigenvalue as well as indicate an increase in system stability. The system used in this research was 150 kV applied in the electrical systems of Sulselrabar Region (South, East and West Provinces of Sulawesi Island), Indonesia.
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Power System Stabilizer; Firefly; Eigenvalue; Settling Time; Overshoot

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