Studi Kestabilan Frekuensi Akibat Penetrasi PLTS Pada Sistem Transmisi Sulawesi Bagian Utara

Hakim, Affan (2025) Studi Kestabilan Frekuensi Akibat Penetrasi PLTS Pada Sistem Transmisi Sulawesi Bagian Utara. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Peningkatan penetrasi Pembangkit Listrik Tenaga Surya (PLTS) dalam sistem tenaga listrik menghadirkan tantangan baru terhadap kestabilan frekuensi, terutama karena PLTS merupakan pembangkit berbasis inverter yang tidak memiliki inersia sebagaimana pembangkit konvensional. Ketika terjadi gangguan seperti pelepasan pembangkit, sistem yang minim inersia akan mengalami laju penurunan frekuensi yang lebih cepat (RoCoF) dan nilai nadir frekuensi yang lebih rendah. Penelitian ini bertujuan untuk menganalisis dampak penetrasi PLTS terhadap kestabilan frekuensi sistem serta mengevaluasi efektivitas integrasi Battery Energy Storage System (BESS) sebagai solusi pengganti inersia pembangkit konvensional. Studi dilakukan pada sistem kelistrikan Sulawesi Bagian Utara menggunakan perangkat lunak DigSILENT PowerFactory. Simulasi dilakukan dengan skenario penetrasi PLTS sebesar 0%, 7%, dan 14%, serta integrasi BESS sebesar 12%, 20%, dan 40% dari kapasitas PLTS. Hasil simulasi menunjukkan bahwa semakin tinggi penetrasi PLTS, semakin menurun nilai nadir dan semakin besar RoCoF. Namun, integrasi BESS terbukti mampu memperbaiki respons frekuensi secara signifikan. Integrasi optimal diperoleh pada kapasitas BESS 40% terhadap PLTS, yang memberikan nilai nadir frekuensi terbaik dan waktu pencapaian nadir tercepat. Dengan demikian, BESS dapat menjadi solusi efektif dalam menjaga kestabilan frekuensi pada sistem tenaga listrik dengan penetrasi energi terbarukan yang tinggi.
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The increasing penetration of Photovoltaic Power Plants (PLTS) into power systems presents new challenges to frequency stability, primarily because PLTS operates using inverter-based technology and lacks the inertia contributed by conventional synchronous generators. When disturbances such as generator disconnection occur, low-inertia systems are more susceptible to rapid frequency decline (indicated by a higher Rate of Change of Frequency/RoCoF) and lower frequency nadir values. This study aims to analyze the impact of PLTS penetration on system frequency stability and evaluate the effectiveness of integrating a Battery Energy Storage System (BESS) as a substitute for conventional generator inertia. The study is conducted on the North Sulawesi power system using DigSILENT PowerFactory software. Simulations are performed under PLTS penetration scenarios of 0%, 7%, and 14%, along with BESS integration levels of 12%, 20%, and 40% of the total PLTS capacity. The simulation results show that higher PLTS penetration leads to lower frequency nadirs and increased RoCoF. However, BESS integration significantly improves frequency response. The optimal condition is achieved with 40% BESS capacity relative to PLTS, resulting in the highest nadir frequency and the fastest time to reach nadir. Thus, BESS proves to be an effective solution for maintaining frequency stability in power systems with high renewable energy penetration.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	BESS, PLTS, Stabilitas Frekuensi, DigSilent PowerFactory.BESS, Solar Power Plant, Frequency Stability, DigSilent PowerFactory.
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3226 Transients (Electricity). Electric power systems. Harmonics (Electric waves).
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20101-(S2) Master Thesis
Depositing User:	Affan Hakim
Date Deposited:	28 Jul 2025 09:27
Last Modified:	28 Jul 2025 09:27
URI:	http://repository.its.ac.id/id/eprint/122259

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