Article Per Year (5 Year)
p-Index From 2019 - 2024
0.23
P-Index
This Author published in this journals
All Journal Jurnal Ilmiah Dinamika Rekayasa (DINAREK)
Arief Wisnu Wardhana, Arief Wisnu
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Peningkatan Efesiensi Produksi Electric Arc Furnace Dengan Injeksi Oksigen Untuk Menghemat Biaya Energi Listrik Pada Industri Baja Wardhana, Arief Wisnu
Dinamika Rekayasa Vol 3, No 1 (2007): Dinamika Rekayasa - Februari 2007
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2007.3.1.123

Abstract

The highest production in steel making process is the cost of melting in the Electric Arc Furnace (EAF). The higher the electricity cost , the higher the production cost would be. Some means have to be done , therefore, in the melting process, in order to achieve higher efficiency. One of them is by installing a water cooling panel system at the furnace’s wall and roof. Another way is by chemical reaction through oxygen injection into EAF. The combination of the two will result in tap voltage at higher current and long arc setting. By obtaining higher power factor and long arc, we can achieve higher productivity and electricity cost saving. Experience and data shows that the power factor and long arc obtained can save up to 1.9 Kwh per Nm3 oxygen . Using the data, if oxygen were increased until 30N m3/ton , the fixed production cost would increased approximately 5 % for every increase of Rp.100,-/Kwh in electricity cost. Therefore, in order to stabilize the production cost, energy transformation capacity should be increased to become 130 MVA which is combined with an adequate oxygen injection management
ANALISIS KOORDINASI SISTEM PROTEKSI PENYULANG DIENG-2 (DNG02) TERHADAP GANGGUAN ARUS HUBUNG SINGKAT GARDU INDUK DIENG PT PLN (PERSERO) UP3 PURWOKERTO Nugorho, Daru Tri; Wardhana, Arief Wisnu; Wahyumi, Aida
Dinamika Rekayasa Vol 16, No 1 (2020): Jurnal Ilmiah Dinamika Rekayasa - Februari 2020
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2020.16.1.327

Abstract

Gangguan yang sering terjadi pada sistem distribusi adalah gangguan arus hubung singkat. Untuk itu sistem proteksi dipasang di penyulang gardu induk. Pada penyulang Dieng-2 periode Januari 2019- September 2019 telah terjadi trip sebanyak tujuh kali. Peralatan sistem proteksi utama pada penyulang terdiri dari Over Current Relay (OCR), Ground Fault Relay (GFR), dan recloser. Untuk mengetahui koordinasi sistem proteksi penyulang yang baik diperlukan perhitungan arus nominal trafo, reaktansi sumber, reaktansi trafo, impedansi, dan arus hubung singkat. Hasil perhitungan arus hubung singkat akan menjadi dasar dalam menentukan waktu kerja dan selisih waktu kerja (Δt) relai antara Pemutus Tenaga (PMT) outgoing dan recloser. Pada setting awal relai, terdapat relai yang bekerja  tidak sesuai koordinasi. Pengaturan ulang nilai tms relai diperlukan untuk menyesuaikan waktu kerja (Tk) 0,7 s dan 0,3 s dengan Δt 0,4 s. Sehingga relai dan recloser bekerja sesuai dengan koordinasi proteksi penyulang yang memenuhi standar PLN dan standar IEC 60255.
Co-Authors Nugorho, Daru Tri Wahyumi, Aida