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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Media Elektro : Journal of Electrical Power, Informatics, Telecommunication, Electronics, Computer and Control System
Umar Umar
Universitas Khairun
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Optimal Expenditure and Benefit Cost Based Location, Size and Type of DGs in Microgrids Systems Using Adaptive Real Coded Genetic Algorithm Umar Umar; Firdaus Firdaus; Adi Soeprijanto; Ontoseno Penangsang
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 16, No 1: February 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v16i1.6761

Abstract

The economic issue is an essential element to determine whether DG should be installed or not. This work presents the economical approach for multi-type DGs placement in microgrid systems with more comprehensive overview from DG’s owner perspective. Adaptive Real Coded GA (ARC-GA) with replacement process is developed to determine the location, type, and rating of DGs so as the maximum profit is achieved. The objectives of this paper are maximizing benefit cost and minimizing expenditure cost. All objectives are optimized while maintaining the bus voltage at the acceptable range and the DGs penetration levels are below of the DGs capacities.The proposed method is applied on the 33 bus microgrids systems using conventional and renewable DG technology, namely Photovoltaic (PV), Wind Turbine (WT), Micro Turbine (MT) and Gas Turbine (GT). The simulation results show the effectiveness of the proposed approach.
TEKNOLOGI PROSES PRODUKSI SENSOR CAHAYA UNTUK PENGEMBANGAN ROBOTIK BERBASIS TEKNOLOGI LAPISAN TIPIS BAHAN FERROELEKTRIK BARIUM STRONSIUM TITANAT (BA0,55SR0,45TIO3) Faanzir Faanzir; Umar Umar
Jurnal Media Elektro Vol 1 No 3 (2013): April 2013
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jme.v0i0.6277

Abstract

Ferroelectric thin films have been used for different applications in the fields of electronics and electric-optics. Barium Strontium Titanate (BST) is very attractive ferroelectric material and becomes the center of attention due to its various advantages, including low optical losses, low dielectric constant and high storage capacity. The purpose of this research is to find the optical and crystal structure properties of thin-film Ba0,55 Sr0.45Tio3 (BST)1 M. Annealing time was 15 hours at a temperature of 750°C and 775oC on p-type silicon subtract by using chemical solution decomposition (CSD) methods which is followed by spin coating process at 3000 rpm for 30 seconds. Optical properties test such as absorbance and transmittance analysis, showed that the increase in the annealing temperature can improve the absorbance properties and energy gap of BST. Energy gap obtained by using tauc plot are 3.05 eV for the annealing temperature of 750°C and 3.225 eV for the annealing temperature of 775oC. Crystal structure by X-Ray Diffraction (XRD) showed that the difference in annealing temperature causes a shift in the angle of diffraction. The pseudo tetragonal structure of Ba0,55 Sr0.45Tio3 becomes tetragonal (c / a <1) and the crystal structure have crystal orientation distribution.
Co-Authors Adi Soeprijanto Faanzir Faanzir Firdaus Firdaus Ontoseno Penangsang