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All Journal INFOKUM International Journal of Economic, Technology and Social Sciences (Injects)
Moranain Mungkin
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Religion Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Economics, Econometrics & Finance Education Industrial & Manufacturing Engineering Public Health Social Sciences

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Analytical Study of Control Systems For Power Loss Minimization In 20 kV Medium Voltage Distribution Network at PT PLN (Persero) ULP Balige Arya Habibi; Moranain Mungkin; Muhammad Fadlan Siregar
INFOKUM Vol. 13 No. 03 (2025): Infokum
Publisher : Sean Institute

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Abstract

A Power losses in medium voltage distribution networks remain a significant concern for utility companies, particularly in developing regions. This study presents an analytical investigation into the role of control systems in minimizing power losses within the 20 kV medium voltage distribution network at PT PLN (Persero) ULP Balige. This paper research focuses on identifying key components contributing to energy losses, such as unbalanced loading, reactive power flow, and suboptimal voltage regulation. A control system approach is analysed through simulations and system performance evaluations, involving the implementation of automatic capacitor bank control, transformer tap changers, and load balancing strategies. Using simulation tools such as ETAP and actual operational data from the Balige, distribution network, the study evaluates system behaviour under various control scenarios. The results show that implementing a responsive and automated control system significantly reduces technical losses, improves power factor, and enhances voltage profile stability across the network. The study concludes that an integrated control strategy tailored to the characteristics of the local network can optimize distribution efficiency and reduce operational costs. This research provides practical recommendations for PT PLN and similar utilities seeking to modernize their distribution infrastructure through smarter control technologies and data-driven planning.
Implementation of an Automatic Capacitor Bank Control System Using PLC for Power Factor Optimization Supriadi Marpaung; Moranain Mungkin
International Journal of Economic, Technology and Social Sciences (Injects) Vol. 5 No. 2 (2024): October 2024
Publisher : CERED Indonesia Institute

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The efficiency and stability of electrical power systems are greatly influenced by the power factor. A low power factor can lead to increased losses and higher electricity bills, especially in industrial environments. This study presents the implementation of an automatic capacitor bank control system using a Programmable Logic Controller(PLC) to optimize the power factor in an electrical installation. The system is designed to monitor reactive and active power in realtime, and automatically switch capacitor banks on or off based on the load condition. By utilizing PLC technology, the system ensures precision, reliability, and ease of modification according to operational requirements. Testing results demonstrate a significant improvement in power factor after the system is applied, as well as reduced reactive power consumption. This research contributes to the development of smart, automated solutions for energy efficiency in industrial power management systems.
Design And Development Of A Differential Relay Prototype Using SCR For Single-Phase Transformers Hendri Parulian Simatupang; Moranain Mungkin
International Journal of Economic, Technology and Social Sciences (Injects) Vol. 6 No. 1 (2025): Mei 2025
Publisher : CERED Indonesia Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/injects.v6i1.1269

Abstract

transformer, focusing on signal processing by the ADC module. The methods used include hardware design, simulation using MULTISIM, and experiments to determine the optimal parameters of the shunt resistor (R shunt) and capacitor to improve the relay response. The results show that the use of a current transformer (CT) with a ratio of 1000: 1 produces a secondary current that is too small (2.6mA - 7.7mA) to trigger the relay directly. By connecting two CTs in series and reversing the phase of one of them, the resulting voltage increases so that it is sufficient to activate the ADC module. The addition of R shunt (10K potentiometer) allows the secondary voltage to approach zero under normal conditions, while the use of a 4.7µF / 16V polar capacitor optimizes the performance of differential relay protection without sacrificing the indicator display function.
Co-Authors Arya Habibi Hendri Parulian Simatupang Muhammad Fadlan Siregar Supriadi Marpaung