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All Journal Jurnal SPEKTRUM Proceeding ISETH (International Summit on Science, Technology, and Humanity)
Setiawan, I. N.
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Computer Science & IT Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Medicine & Pharmacology Social Sciences Other

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PERANCANGAN JARINGAN DISTRIBUSI UNTUK PLTS TERAPUNG DAN PLTMH DI BENDUNGAN SIDAN Sari, N. P. A. R.; Ariastina, W. G.; Setiawan, I. N.; Partha, C. G. I.; Sukerayasa, I W.; Kumara, I. N. S.
Jurnal SPEKTRUM Vol 11 No 1 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2024.v11.i01.p17

Abstract

Blahkiuh Feeder is a 20 kV radial distribution network spanning 78.65 kms, which is the longest network in the Mengwi Network Unit. The length of the distribution lines also results in relatively high power losses. Therefore, the installation of distributed generation (DG) utilizing the potential of solar photovoltaic (PV) and micro-hydro power plants (MHP) available at the Sidan Dam has the potential to improve voltage drop and power loss values on the Blahkiuh Feeder. This research was conducted to analyze voltage and power losses due to DG installation at the Sidan Dam, with power flow simulation during peak daytime load at 14:00 and peak nighttime load at 19:00. Simulation results indicate that when interconnected with the daytime peak load at 14:00, DG interconnection results in a decrease in power loss values by 0,8% or 64 kW, and interconnection with the nighttime peak load at 19:00 also leads to a decrease in power loss values by 0.61% or 55 kW. Distributed Generation interconnection on the Blahkiuh Feeder also leads to improvements in voltage values, where interconnection during daytime at 14:00 results in voltage improvement at 41 busbars units under undervoltage condition, and interconnection during night time at 19:00 leads to voltage improvement at only 34 busbars units undervoltage condition out of a total of 50 undervoltage busbars.
Analysis of Built-up Area and Land Surface Temperature Relationship in Makassar City using NDBI Processing Setiawan, I. N.; Jumadi, J
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2024: Proceeding ISETH (International Summit on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/iseth.5363

Abstract

Dynamic development in Indonesia's Urban Areas is influenced by population growth, economy, and environmental dynamics. By mid-2023, Indonesia's population will reach 278,696.2 million, ranking fourth as the largest population in the world. Unbridled urban growth has resulted in urban restructuring, agricultural land transformation, and a decrease in the area of green open space. This leads to a decrease in air quality, an increase in surface temperature, as well as changes in land cover patterns. A similar pattern is seen in Makassar City, where a shortage of green open space (less than 30%) and land-to-building changes have increased the city's surface temperature. This study aims to analyze the distribution of built-up land, land surface temperature (LST) and the relationship of land change built in Makassar City from 2014 and 2023 using Landsat Imagery. Analysis using Landsat Imagery and Normalized Defference Built-up Index algorithm shows significant growth of built-up land in accordance with the development plan of Makassar City until 2026. The surface temperature classification indicates a significant increase from 2014 to 2023, which is associated with built-up land growth. The results of simple linear regression showed a positive correlation between built-up land area and surface temperature, with R Square reaching 34.7% in 2014 and 38.9% in 2023. These findings reflect the impact of development on Land Surface Temperature (LST) and emphasize the urgency of built-up land management to reduce the impact of heat in cities.
Co-Authors C. G. I. Partha, C. G. I. I Wayan Sukerayasa Jumadi, J Kumara, I. N. S. Sari, N. P. A. R. Wayan Gede Ariastina