Penjadwalan Unit Pembangkit Termal, Sel Surya dan Baterai Menggunakan Metode MIQP

Galih Yudhaprawira, Sarjiya Sarjiya

Abstract


Abstract—The use of renewable energy to support the power system operation is a way to reduce the energy dependence from fossil resources. Photo voltage (PV) is one of renewable energy suitable used in tropical area because of the availability of adequate sunlight. One of the problems when PVs are interconnected to thermal generation system is how to determine the committed thermal units to serve the load. In this paper, the unit commitment problems of generation system including PVs and battery are solved using Mixed Integer Quadratic Programming (MIQP). Three simulation scenarios are reported which represent the impact of involving PVs and battery in total operation cost. When PVs are involved in the scheduling, they could reduce the power generated by thermal unit as well as total operation cost. Similarly, when battery units are involved, the battery capability to store and release energy also could reduce total operation cost.

Intisari— Penggunaan energi terbarukan untuk mendukung operasi sistem tenaga merupakan salah satu cara untuk mengurangi ketergantungan terhadap sumber daya fosil. Sel surya adalah salah satu energi terbarukan yang cocok untuk digunakan di daerah tropis karena ketersediaan sinar matahari. Salah satu masalah ketika sel surya diinterkoneksikan dengan sistem pembangkit termal adalah bagaimana menentukan unit termal yang berkomitmen untuk melayani permintaan daya beban. Masalah unit commitment dari sistem pembangkit termal termasuk sel surya dan baterai dipecahkan meenggunakan Mixed Integer Quadratic Programming (MIQP). Penelitian menggunakan tiga skenario merepresentasikan pengaruh dilibatkannya sel surya dan baterai terhadap biaya total operasi. Ketika sel surya dilibatkan dalam penjadwalan, daya yang dibangkitkan oleh unit pembangkit termal berkurang yang juga berdampak pada biaya total operasi. Hasil yang sama didapatkan ketika unit baterai dilibatkan. Kemampuan baterai untuk menyimpan dan menyuplai energi juga dapat mengurangi biaya total operasi.

Kata Kunci— unit commitment, sel surya, baterai, MIQP, biaya total operasi.


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References


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DOI: http://dx.doi.org/10.22146/jnteti.v2i3.80

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