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All Journal Jurnal Teknologi Elekterika Jurnal Ilmiah Teknik Elektro
Andarini Asri
Politeknik Negeri Ujung Pandang
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Journal : Jurnal Teknologi Elekterika

 1 
Perbaikan Rugi Energi Dengan Rekonfigurasi Jaringan Pada Sistem Distribusi Radial andarini asri; Alamsyah Achmad; Sarma Thaha; Wisna Saputri Alfira
Jurnal Teknologi Elekterika Vol 17, No 1 (2020): Mei
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/elekterika.v4i1.2117

Abstract

Sistem distribusi merupakan salah satu sistem dalam sistem tenaga listrik yang mempunyai peran penting karena berhubungan langsung dengan pemakai energi listrik, terutama pemakai energi listrik tegangan menengah dan tegangan rendah. Seringkali terjadi beban yang tidak seimbang pada fasa-fasanya atau terjadi kelebihan beban karena pemakaian alat-alat elektrik dari konsumen energi listrik. Semakin meningkatnya kebutuhan energi listrik harus diimbangi dengan kualitas yang baik. Untuk mengatasinya diperlukan suatu  rekonfigurasi  di jaringan distribusi. Rekonfigurasi di jaringan distribusi tenaga listrik dilakukan untuk  memperbaiki kualitas sistem jaringan. Masalah yang ada di jaringan distribusi radial yakni rugi-rugi energi yang besar. Dalam penelitian ini membahas rekonfigurasi jaringan menggunakan metode simple branch exchange. Metode simple branch exchange merupakan jenis dari metode heuristik. Cara kerja dengan menyeleksi urutan loop dilakukan untuk rekonfigurasi jaringan distribusi. Hasil simulasi menunjukkan bahwa penggunaan metode simple branch exchange untuk merekonfigurasi jaringan terjadi penurunan rugi-rugi energi dari 30,673 kWh menjadi 27,576 kWh.
Analisis Efisiensi Generator Pada GT21 Blok 2 Pembangkit Listrik Tenaga Gas Dan Uap PT. CEPA Sengkang Ashar AR; Hamma Hamma; Wisna Saputri Alfira WS; Andarini Asri; Ardiyansyah Ardiyansyah
Jurnal Teknologi Elekterika Vol 19, No 2 (2022): Nopember
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/elekterika.v6i2.3805

Abstract

       PLTGU Sengkang which is operated by PT. CEPA Sengkang with a total capacity of 315 MW. One of the important components in the PLTGU system is a generator. In a generator there are many problems that arise, including generator efficiency problems. The research that will be carried out is to determine the generator efficiency value and then determine how much the generator efficiency value increases. In finding the efficiency value by making daily and monthly loading curves using generator output power, generator input power data, generator nameplate and generator power losses at 25%, 50%, 75%, and 100% loading. In this study, taking a sample that lasted for 1 month (31 days) of generator efficiency data for each loading and comparing the actual with the generator specifications, the difference for loading 25% experienced a decrease in efficiency of 0.35%, for loading 50% experienced an efficiency increase of 0.12%, for loading 75% increased efficiency of 0.25% and for loading 100% increased efficiency of 0.32%. In this study the generator has experienced reverse power so that the efficiency of the generator has decreased. The average efficiency in May 2022 was 96.21%, with an average load of 29.96 MW and an average input power of 31.14 MW. Referring to the manual book Block 2 PLTGU PT. CEPA Sengkang is known that the generator efficiency value is by design divided into 4 loadings. For loading 25% efficiency is 96.6%, for loading 50% efficiency is 98.45%, for loading 75% efficiency is 98.82%, and for loading 100% efficiency is 98.93% and so that the optimum efficiency of the generator occurs at a load of 54.2 MW (loading 100 %) with a value of 99.62%.
Co-Authors Alamsyah Achmad Ardiyansyah Ardiyansyah Ashar AR Hamma Hamma Muhammad Ruswandi Djalal Rahmat Rahmat Sarma Thaha Wisna Saputri Alfira WS