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All Journal Jurnal Teknik Elektro Jurnal Ilmiah Teknik Elektro Jurnal Teknik Elektro
Maula Sukma Widjaja
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Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy

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PROGRAM PEMBENTUKAN MATRIX ADMITANSI PADA SISTEM TENAGA LISTRIK MENGGUNAKAN MATLAB Widjaja, Maula Sukma
Jurnal Teknik Elektro Vol 1, No 1 (2001)
Publisher : Jurnal Teknik Elektro

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Abstract

The study aims to point out appluation of Matlab in analyzing admittance of electrical powersystem. Furthemore, its correlation with other pachage program such as MS Word or evenExcel, makes the analysis sampler and more flexible. Eventually the analysis made in Matlabformat, can be obtained or exported other related pachage program such as Excel and MSWord according to the fowsing NeedsKeywords: admittance, simulation, manipulation, arrays
Desain Microgrid untuk Militer Putri, Dianing Novita Nurmala; Sari, Tyas Kartika; Irianto, Chairul G; Widjaja, Maula Sukma
Jetri : Jurnal Ilmiah Teknik Elektro Vol. 22 No. 1 (2024): Jetri, Volume 22, Nomor 1, Agustus 2024
Publisher : Website

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/fpmtbn03

Abstract

With more than 300,000 members, Indonesia's military forces, consisting of the army, navy and air force, have a large need for electricity. A reliable and safe electricity source is a must. Especially in carrying out the task of defending the country in conditions that are critical and threaten the security of the country. For this reason, the use of microgrids can be a solution for energy independence. In addition, using microgrids consisting of renewable energy sources helps the government increase the renewable energy share. This research discusses the design and application of microgrids in the military. The study case is done in one of military facility in Indonesia. The first step is to identify the type of the system if it is on grid or off grid, then calculate the load, source of energy and decide the control system. In this study case where the load is 3082 kWh/day, it require 860pcs PV of 320Wp capacity with cycle charging controller systems and Diesel Generator with capacity of 260kW. It is hoped that it can be a guide for the military in Indonesia in implementing microgrids.
Techno-Economic of Rooftop Solar Power Plants for Residential Customer in Indonesia Putri, Dianing Novita Nurmala; Fariz Maulana Rizanulhaq; Tyas Kartika Sari; Maula Sukma Widjaja; Chairul Gagarin Irianto
Jurnal Teknik Elektro Vol. 16 No. 2 (2024)
Publisher : LPPM Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jte.v16i2.14514

Abstract

This study evaluates the financial viability of grid-connected rooftop photovoltaic (PV) systems across seven Indonesian residential types (2.75-19.8 kWp) under current market conditions. Using a discounted cash flow model with 8% discount rate and a 20-year project lifetime, key metrics including Net Present Value (NPV), Levelized Cost of Electricity (LCOE), and payback period have been analysed. Results demonstrate that system economics improve significantly with scale: while small systems (2.75 kWp) yield negative NPV (-Rp 9.71 million) and 12.4-year payback, larger installations (>7.7 kWp) achieve positive NPV (up to Rp 89.95 million for 19.8 kWp systems) and sub-10-year payback periods. The LCOE ranges from Rp 1,082-1,205/kWh, representing 11-36% cost savings compared to PLN's tiered tariffs (Rp 1,352-1,699.53/kWh). Monthly savings scale proportionally with system size, from Rp 323,378 (2.75 kWp) to Rp 2.84 million (19.8 kWp). A critical 7.7 kWp capacity threshold emerges for self-sustaining viability without subsidies, with 3500+ VA customers benefiting most due to higher avoided tariffs. These findings provide policymakers with evidence to design tiered incentive programs targeting underperforming market segments (<6 kWp systems), while confirming the commercial readiness of larger residential-commercial hybrid systems in Indonesia's solar transition.
Co-Authors Chairul Gagarin Irianto Fariz Maulana Rizanulhaq Irianto, Chairul G Putri, Dianing Novita Nurmala Sari, Tyas Kartika Tyas Kartika Sari