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All Journal Jurnal Riset Rekayasa Elektro IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Rizka Yusvida
Politeknik Internasional Tamansiswa Mojokerto
Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pemodelan dan Peramalan Beban Listrik Jangka Pendek Menggunakan ARIMAX dengan Variabel Eksogen Parameter Kelistrikan Rizka Yusvida; Dwi Heru Siswantoro; Sekar Sari; Mokhammad Firmansyah
Jurnal Riset Rekayasa Elektro Vol. 8 No. 1 (2026): JRRE VOL 8 NO 1 JUNI 2026
Publisher : PROGRAM STUDI TEKNIK ELEKTRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/jrre.v8i1.28814

Abstract

Peramalan beban listrik jangka pendek merupakan komponen penting dalam pengelolaan sistem tenaga, terutama untuk mendukung penjadwalan operasi dan pengambilan keputusan pada level distribusi dan gedung. Penelitian ini menyajikan pemodelan dan peramalan beban listrik jangka pendek menggunakan model Autoregressive Integrated Moving Average with Exogenous Variables (ARIMAX) berbasis data hasil pengukuran Power Meter Schneider PowerLogic PM800 yang direkam oleh data logger berbasis ESP32. Data diambil pada salah satu gedung dengan interval pencatatan 5 menit dan menghasilkan 4.789 sampel setelah proses pra-pemrosesan. Daya aktif total (P Total) digunakan sebagai variabel terikat, sedangkan arus rata-rata tiga fasa (IAVE), tegangan rata-rata antar fasa (V LL-Ave), dan faktor daya (PF) digunakan sebagai variabel eksogen yang secara fisis berkaitan dengan persamaan daya tiga fasa.
Pengaruh Variasi Suhu Kondensor terhadap Kinerja Rotary Vacuum Evaporator pada Ekstraksi Meniran (Phyllanthus Niruri) Dwi Heru Siswantoro; Yayang Permadi; Revvan Rifada Pradiza; Sekar Sari; Rizka Yusvida
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.336

Abstract

This study analyzes the effect of condenser temperature variation on the performance of a rotary vacuum evaporator (RVE) in extracting Phyllanthus niruri solution. Three condenser conditions, 23 °C, 30 °C, and without cooling, were tested, each with five replications. Observed parameters included evaporation time, mass reduction rate, energy consumption, and flavonoid content, which were analyzed statistically using Analysis of Variance (ANOVA). Results showed that the 23 °C condenser achieved the highest mass reduction rate (3.78 g/min) and the lowest energy consumption (0.14 kWh). At 30 °C and without cooling, mass reduction rates decreased to 3.02 g/min and 2.24 g/min, while energy consumption rose to 0.19 kWh and 0.20 kWh. The 23 °C condenser also produced the highest flavonoid content (11.9 mg/mL), confirming optimal thermal efficiency. This work fills the research gap on the effect of condenser temperature on energy efficiency and extract quality in RVE systems and provides a basis for developing energy-efficient evaporators for small-scale herbal industries.
Co-Authors Dwi Heru Siswantoro Mokhammad Firmansyah Revvan Rifada Pradiza Sekar Sari Yayang Permadi