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All Journal Journal Geuthee of Engineering and Energy
Ramdhan Halid Siregar
Syiah Kuala University
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Impact of distributed generation on power losses and voltage profile of the Unsyiah distribution feeder Ramdhan Halid Siregar; Muhammad Hirzan Mardhika; H Hafidh
Journal Geuthee of Engineering and Energy Vol 5, No 1 (2026): Journal Geuthee of Engineering and Energy
Publisher : Geuthèë Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52626/joge.v5i1.97

Abstract

Distributed generation (DG) ha s emerged as an effective solution for improving power quality, enhancing voltage profiles, and reducing power losses in electrical distribution systems. This study investigates the impact of renewable-energy-based DG integration on the voltage profile and power losses of the Unsyiah distribution feeder in Banda Aceh, Indonesia. The distribution network was modeled and analyzed using ETAP 16.0.2, while MATLAB R2021a with the backpropagation artificial neural network (ANN) method was employed to estimate solar radiation intensity and wind speed data for photovoltaic (PV) and wind power plant (WPP) generation. The ANN model was trained using environmental and climate data, producing regression values of 0.84901 for solar radiation prediction and 0.85083 for wind speed prediction, indicating satisfactory predictive performance. Two DG placement scenarios with a penetration level of 20% of the total feeder load (388.4 kW) were evaluated at Bus USK 01 and Bus USK 24. Simulation results demonstrate that DG integration significantly improves the voltage profile, particularly at buses located near the end of the feeder where voltage drops are more severe. The optimal scenario was achieved by placing wind-power-based DG at Bus USK 24, which reduced active power losses from 11.8 kW to 8.1 kW and reactive power losses from 13.1 kVAR to 8.6 kVAR. Overall, the integration reduced active power losses by 31.35% and reactive power losses by 34.35%. The findings confirm that both DG placement location and DG type strongly influence the effectiveness of voltage profile enhancement and power loss reduction in radial distribution systems.
Short circuit current limitation using series reactors in 20 kV distribution feeder Ramdhan Halid Siregar; Alwan Farras; S Syahrizal
Journal Geuthee of Engineering and Energy Vol 5, No 1 (2026): Journal Geuthee of Engineering and Energy
Publisher : Geuthèë Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52626/joge.v5i1.94

Abstract

Short-circuit faults in power distribution systems generate excessive fault currents that can damage electrical equipment and reduce system reliability. One practical method for limiting fault current is the installation of a series reactor or current limiting reactor (CLR). This study analyzes short-circuit current characteristics in the 20 kV Ulee Kareng distribution feeder in Banda Aceh and evaluates the effectiveness of a series reactor in reducing fault current levels. The analysis was performed using ETAP 19.0.1 simulation software based on the IEC 60909 standard. Four fault types were investigated: three-phase, single line-to-ground, line-to-line, and double line-to-ground faults. The simulation results show that the maximum three-phase short-circuit current before reactor installation was 4.066 kA at bus LBU 01-00, while the minimum value was 2.732 kA at bus LBU 42-00. A series reactor with a reactance value of 3.12 Ω was designed to achieve approximately 50% current reduction. After installation, the three-phase short-circuit current at bus LBU 01-00 decreased to 2.103 kA, corresponding to a 48% reduction. The results confirm that the series reactor effectively reduces fault current levels and improves protection system performance without replacing existing circuit breakers. The novelty of this study lies in the evaluation of series reactor performance for all fault types in the actual 20 kV Ulee Kareng distribution feeder using IEC 60909-based ETAP simulations under real operating conditions
Co-Authors Alwan Farras H Hafidh Muhammad Hirzan Mardhika S Syahrizal