Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Jurnal Teknologi Elekterika
Alfira WS, Wisna Saputri
Unknown Affiliation
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering

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

Found 2 Documents
Search

 1 
Analisis Efisiensi Generator Pada GT21 Blok 2 Pembangkit Listrik Tenaga Gas Dan Uap PT. CEPA Sengkang AR, Ashar; Hamma, Hamma; Alfira WS, Wisna Saputri; Asri, Andarini; Ardiyansyah, Ardiyansyah
Jurnal Teknologi Elekterika Vol. 19 No. 2 (2022): Nopember
Publisher : Jurusan Teknik Elektro 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%.
Prototype Elevator 5 Lantai Berbasis PLC Yudin, Ayudila; Habib, Muh. Asnan; Hamdani, Hamdani; Alfira WS, Wisna Saputri
Jurnal Teknologi Elekterika Vol. 20 No. 2 (2023)
Publisher : Jurusan Teknik Elektro Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/elekterika.v20i2.4632

Abstract

Penelitian ini melibatkan perancangan dan pengujian prototype sistem elevator 5 lantai yang berbasis pada PLC. Dalam tahap perancangan, menggambarkan struktur utama elevator, termasuk kerangka elevator, sangkar elevator dengan sistem pendeteksi beban dan pemberat, serta komponen kunci dalam pintu elevator seperti gear, rel, dan dudukan motor DC. Selain itu, merancang rangkaian kontrol yang kompleks yang melibatkan PLC, tombol push button, sensor proximity, sensor infrared (IR), serta motor AC dan motor DC. Tombol pengendalian dapat memindahkan sangkar naik dan turun sesuai dengan tujuan yang dipilih oleh pengguna, dengan sensor proximity yang secara otomatis menghentikannya di lantai yang dituju. Pintu elevator juga berfungsi dengan baik, membuka secara otomatis ketika mendeteksi keberadaan objek di depannya dan menghentikan motor ketika pintu mencapai limit switch. Tujuan dari penelitian ini adalah untuk menciptakan prototype elevator yang mendekati fungsi lift yang digunakan di gedung bertingkat, dengan menggunakan PLC sebagai pengendali utama dan motor oriental 3 phasa sebagai komponen penggerak utama yang handal. serta memasukkan sensor load cell dengan kapasitas 1 kg untuk mengukur beban yang dimasukkan ke dalam lift, serta sistem pintu otomatis untuk meningkatkan keamanan dan kenyamanan. Penelitian ini bertujuan untuk memenuhi kebutuhan akan alat peraga dan pengujian sistem elevator yang canggih
Co-Authors AR, Ashar Ardiyansyah Ardiyansyah asri, andarini Habib, Muh. Asnan Hamdani Hamdani Hamma, Hamma Yudin, Ayudila