Potensi Energi Tahunan Berdasarkan Simulasi Waktu Pembangkit Listrik Tenaga Mikrohidro (PLTMH) Jamus Desa Girikerto Kecamatan Sine Kabupaten Ngawi. (Annual Energy Potential Based on Time Simulation of Microhydro Power Plant (PLTMH) Jamur Girikerto Village, Sine District, Ngawi Regency).

Rifqi, Muhammad Khoirur (2023) Potensi Energi Tahunan Berdasarkan Simulasi Waktu Pembangkit Listrik Tenaga Mikrohidro (PLTMH) Jamus Desa Girikerto Kecamatan Sine Kabupaten Ngawi. (Annual Energy Potential Based on Time Simulation of Microhydro Power Plant (PLTMH) Jamur Girikerto Village, Sine District, Ngawi Regency). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.

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Abstract

Karena besarnya biaya operasional yang harus dikeluarkan dan dampak lingkungan yang ditimbulkan oleh pembangkit listrik bahan bakar minyak (fossil) membuat PT. Candi Loka Jamus beralih menggunakan pembangkit listrik tenaga mikrohidro untuk pemenuhan kebutuhan energi listriknya. Saat ini PLTMH tersebut telah beroperasi, namun pada saat musim kering energi yang dihasilkan tidak mampu untuk memenuhi kebutuhan. Jika pembangkit listrik tenaga mikrohidro tetap dipaksakan untuk beroperasi maka komponennya akan mengalami kerusakan.dan dapat menurunkan kinerja pembangkit listrik tersebut. Mengkaji ulang perhitungan potensi energi berdasarkan simulasi waktu operasional dan simulasi waktu musim merupakan langkah yang dapat dilakukan untuk mengatasi permasalahan tersebut. Penelitian ini bertujuan untuk mengetahui besarnya potensi energi tahunan pembangkit listrik tenaga mikrohidro berdasarkan debit andalan Q80, Q70, Q50, dan Q30, perbedaan potensi energi yang dihasilkan antara sebelum dan sesudah simulasi waktu operasional dan simulasi waktu musim serta memperoleh waktu operasi efisien pembangkit listrik tenaga mikrohidro, dimulai dengan merekapitulasi data hujan dan menguji konsistensi data tersebut dengan metode analisis kurva massa ganda, lalu menggunakan metode rata-rata aritmatik untuk menganalisis curah hujan wilayah, debit sepanjang tahun dihitung dengan menggunakan metode F.J Mock dan debit andalan dihitung dengan metode basic year, Potensi energi diperoleh dari pengolahan hasil survey yang kemudian dihitung dengan rumus potensi secara fisika. Berdasarkan perhitungan diperoleh potensi energi debit andalan Q80, Q70, Q50, dan Q30 berturut-turut sebesar 569.173,91 KWh 614.737,01 KWh 589.640,81 KWh dan 619.855,44 KWh. Kemudian potensi energi dihitung menggunakan simulasi waktu operasional dan simulasi waktu musim Waktu operasi efisien pembangkit listrik tenaga mikrohidro ditetapkan berdasarkan perhitungan potensi energi debit andalan Q80 dengan simulasi waktu operasional yaitu: pembangkit listrik tenaga mikrohidro aktif mulai 15 harian ke 1-15 (1 Januari - 15 Agustus) kemudian dinonaktifkaan pada 15 harian ke 16-20 (16 Agustus - 31 Oktober) untuk keperluan perawatan, dan diaktifkan kembali pada 15 harian ke 21-24 (1 November - 31 Desember). Dengan masa aktif 287 hari pembangkit listrik tenaga mikrohidro jamus memiliki potensi energi 488.732,17 KWh dalam satu tahun.

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