INFOKUM
The INFOKUM a scientific journal of Decision support sistem , expert system and artificial inteligens which includes scholarly writings on pure research and applied research in the field of information systems and information technology as well as a review-general review of the development of the theory, methods, and related applied sciences. Software Engineering. Image Processing Datamining Artificial Neural Networks
Articles
833 Documents
<![CDATA[FUZZY MAMDANI FORECASTING OF BLOOD BAG SUPPLY AT INDONESIAN RED CROSS BLOOD IN DELI SERDANG REGENCY UNIT ]]>
<![CDATA[Ika Silvia Ramadani]]>;
<![CDATA[Rina Filia Sari]]>;
<![CDATA[Hendra Cipta]]>
<![CDATA[ INFOKUM Vol. 10 No. 5 (2022): December, Computer and Communication ]]>
Publisher : <![CDATA[Sean Institute ]]>
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<![CDATA[An increase in population will cause an increase in the amount of processed blood reserves. Therefore, it is necessary to forecast the amount of production within a certain period of time to see the number of blood bags that may be needed in order to meet demand correctly and in the appropriate amount. The method used is Mamdani fuzzy with data sourced from the Indonesian Red Cross Blood Unit Deli Serdang Regency from January 2019 to January 2020. This study shows that the Mamdani District fuzzy method can be implemented for forecasting the production of blood bags in January and February 2020.]]>
<![CDATA[Energy Efficiency Analysis Through Solar Power Generation System as a New Renewable Energy Source at PT. Bunga Flour Mils Medan ]]>
<![CDATA[Muhammad Rizki Alfurqon]]>;
<![CDATA[Muhammad Erpandi Dalimunthe]]>;
<![CDATA[Rahmaniar, Rahmaniar]]>
<![CDATA[ INFOKUM Vol. 13 No. 06 (2025): Infokum ]]>
Publisher : <![CDATA[Sean Institute ]]>
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DOI: 10.58471/infokum.v13i06.2960
<![CDATA[The development of the industrial revolution 4.0 has led to a surge in energy demand that continues to increase, driving the need for the implementation of new renewable energy sources, one of which is the Solar Power Plant (PLTS). This study aims to analyze the energy efficiency generated by the PLTS system at PT. Bunga Flour Mills Medan as an alternative solution in reducing dependence on conventional energy. The research method includes measuring output power, energy conversion efficiency, and analyzing the costs and benefits of implementing PLTS. The results of the study indicate that the implemented PLTS system has a fairly high efficiency with a significant contribution to saving the company's electricity consumption. In addition, the use of PLTS also has a positive impact on reducing carbon emissions and electricity operational costs in the long term. Thus, PLTS can be an effective and sustainable solution in supporting energy efficiency in the industrial sector.]]>
<![CDATA[Dissolved Gas Analysis (DGA) Testing Analysis on 150kv Power Transformers ]]>
<![CDATA[Muhammad Rivai]]>;
<![CDATA[Muhammad Erpandi Dalimunthe]]>;
<![CDATA[Dino Erivianto]]>
<![CDATA[ INFOKUM Vol. 13 No. 06 (2025): Infokum ]]>
Publisher : <![CDATA[Sean Institute ]]>
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DOI: 10.58471/infokum.v13i06.2966
<![CDATA[This research used a laboratory experimental method with a quantitative approach. The aim was to measure and analyze the dissolved gas content in power transformer oil and to explain the measurement results based on the IEEE C57.104-2008 standard and PT PLN's Decree No. 0520 K/DIR/2014. The research objects were Power Transformers 1 and 2 of the 150 kV Titi Kuning Substation on Jalan Suka Tirta No. 54b, Medan, North Sumatra. The analysis used two methods to determine the condition of this transformer: TDCG and Key Gases. The first method is to measure the contents of Hydrogen (H2), Acetylene (CH2), Ethylene(CH4), Ethane (CH6), Methane, Carbon monoxide (CO), and Carbon dioxide (CO2). The second method involves summing the values of Gas Chromatography Method (TDCG) for Dissolved Gas Analysis (DGA) analysis, and the third method is a key gas method for determining the type of damage or abnormalities in a transformer.]]>
<![CDATA[Analysis of Solar Power Plant Planning for Lighting Dragon Fruit Orchards in Silimakuta Village, Pakpak Bharat ]]>
<![CDATA[Sinamo, Alfonsus]]>;
<![CDATA[Muhammad Erpandi Dalimunthe]]>;
<![CDATA[Haris Gunawan]]>
<![CDATA[ INFOKUM Vol. 13 No. 06 (2025): Infokum ]]>
Publisher : <![CDATA[Sean Institute ]]>
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DOI: 10.58471/infokum.v13i06.2968
<![CDATA[The use of electrical energy as a lighting source in dragon fruit orchards in remote areas such as Silimakuta Village often faces challenges due to limited access to electricity from the state electricity company (PLN). Therefore, efficient and sustainable alternative energy sources are needed, one of which is through Solar Power Plants (PLTS). This study aims to calculate the power requirements and capacity of the PLTS system required to meet lighting needs in dragon fruit orchards. The research problem formulation includes how to calculate the power requirements of a PLTS system and the required power capacity. The problem definition focuses on calculating the power requirements of each component and the amount of power generated by the system to determine the number of solar modules. The research method used was to calculate the power consumption of lighting lamps, system efficiency, and the potential solar irradiation in the area. The results show that a PLTS system with a certain capacity can optimally meet nighttime lighting needs. This research provides benefits in the form of appropriate PLTS system planning, battery capacity calculations, and the utilization of renewable energy to support sustainable lighting systems in the agricultural sector.]]>
<![CDATA[Lithium Battery Efficiency Analysis in Solar Power Plants (PLTS) for Rice Field Irrigation Water Pumps ]]>
<![CDATA[Prabowo, Deni]]>;
<![CDATA[Muhammad Erpandi Dalimunthe]]>;
<![CDATA[Zuraidah Tharo]]>
<![CDATA[ INFOKUM Vol. 13 No. 06 (2025): Infokum ]]>
Publisher : <![CDATA[Sean Institute ]]>
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DOI: 10.58471/infokum.v13i06.2969
<![CDATA[Solar Power Plant is a power generation system that uses solar energy to generate electricity. PLTS components consist of solar panels, solar charger controller, battery and inverter. Solar panels are used to convert solar energy into DC electrical energy. The solar charger controller functions to regulate the voltage value distributed to the battery. The battery is used to store electrical power and the inverter is used to convert DC current to AC. In its use, the components installed on the PLTS need to know the efficiency percentage so that the amount of electrical energy utilization that can be generated can be known. This study aims to analyze the efficiency of electrical energy generation produced by solar panels with a capacity of 250 WP and a 2000 W inverter. Tests were carried out 5 times within a 5-hour time span (10:00 WIB – 14:00 WIB) using a 350 W Water Pump load. The test results showed that the solar panels were able to produce an average power of 76.39 W, with the largest power reaching 86.55 W. The calculated solar panel efficiency was 15.13%. The battery efficiency, based on the highest power measured, reached 0.80%. The inverter's power output varied, averaging 919.6 watts, with the highest output reaching 935 watts.]]>
<![CDATA[Analysis of Radiation Efficiency of Microstrip Dipole Antenna Based on Cohen-Minkowski Fractal ]]>
<![CDATA[Putra, Bhima Andika]]>;
<![CDATA[Muhammad Erpandi Dalimunthe]]>;
<![CDATA[Beni Satria]]>
<![CDATA[ INFOKUM Vol. 13 No. 06 (2025): Infokum ]]>
Publisher : <![CDATA[Sean Institute ]]>
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DOI: 10.58471/infokum.v13i06.2971
<![CDATA[The performance of microstrip antennas can be significantly improved through fractal geometry, particularly in achieving size reduction and multiband behavior. This study investigates the radiation efficiency of a microstrip dipole antenna employing the Cohen-Minkowski fractal geometry. The antenna is designed using FR4 substrate material with a dielectric constant of 4.4 and is simulated in multiple fractal iterations. Simulations are conducted using CST Studio Suite to observe return loss (S11), gain, and radiation efficiency across different frequencies. The results show that the incorporation of Cohen-Minkowski geometry increases surface current path length, enabling better impedance matching and improved radiation efficiency, especially at higher iterations.]]>
<![CDATA[Analysis of Low Voltage Cable Insulation Resistance Test in PT. PLN (Persero) UPP Sumbagut 1 Building ]]>
<![CDATA[Fahredha, Khairul]]>;
<![CDATA[Muhammad Erpandi Dalimunthe]]>;
<![CDATA[Dicky Lesmana]]>
<![CDATA[ INFOKUM Vol. 13 No. 06 (2025): Infokum ]]>
Publisher : <![CDATA[Sean Institute ]]>
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DOI: 10.58471/infokum.v13i06.2975
<![CDATA[Insulation resistance testing is an important part of electrical installation system maintenance to ensure system safety and reliability. This study aims to analyze the condition of low-voltage cable insulation in the PT. PLN (Persero) UPP Sumbagut 1 building through insulation resistance testing using a megger. Measurements were conducted at several distribution panel points by comparing the results with the 2011 PUIL standard. The test results showed a decrease in insulation quality at several points, especially in the generator panel area, which has the potential to cause disruption to the power distribution system. The decrease in insulation resistance can be influenced by various factors such as cable age, environmental humidity, and installation conditions. This study provides recommendations for preventive measures in the form of cable replacement at critical points and the implementation of periodic testing to maintain the performance of the electrical system. In addition, evaluation of installation design and environmental control is also needed to increase cable service life and overall system efficiency.]]>
<![CDATA[Design of a Detector System in Electrical Installations at Dize Photography Studio ]]>
<![CDATA[Riski, Alwi]]>;
<![CDATA[Muhammad Erpandi Dalimunthe]]>;
<![CDATA[Zuraidah Tharo]]>
<![CDATA[ INFOKUM Vol. 13 No. 06 (2025): Infokum ]]>
Publisher : <![CDATA[Sean Institute ]]>
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DOI: 10.58471/infokum.v13i06.2984
<![CDATA[The stability of a three-phase power supply is crucial for ensuring the reliable operation of photography studio equipment, which is generally sensitive to electrical disturbances. One common disturbance is phase failure, which can cause equipment damage, reduced work quality, and safety risks. This study aims to analyze and implement a microcontroller-based phase failure detector system capable of detecting abnormal conditions in a photography studio's electrical system quickly and accurately. The system is designed using an ATmega328P microcontroller integrated with voltage sensors on each phase. When one of the phases fails, the system will provide a warning via a buzzer and LED indicator, and can optionally disconnect the load to prevent further damage. Test results show that this detector is capable of detecting the loss of a phase in less than 1 second with an accuracy level of XX% (adjusted based on the results). Thus, this system can improve protection for studio equipment and support more reliable operations.]]>
<![CDATA[Analysis of the Potential of Remote Monitoring and Control Systems for Energy Efficiency in Office Buildings ]]>
<![CDATA[Roy Leo Rensius Hutauruk]]>;
<![CDATA[Zuraidah Tharo]]>;
<![CDATA[Pristisal Wibowo]]>
<![CDATA[ INFOKUM Vol. 13 No. 06 (2025): Infokum ]]>
Publisher : <![CDATA[Sean Institute ]]>
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<![CDATA[Energy consumption in office buildings represents a significant portion of operational costs and environmental impact. Efficient energy management has therefore become a critical priority. This study analyzes the potential of implementing remote monitoring and control systems to improve energy efficiency in office buildings. The system integrates Internet of Things (IoT) technologies and microcontroller-based controllers to monitor and regulate electrical loads such as lighting, air conditioning, and other office equipment. Data collection and analysis were conducted through sensor integration, cloud-based dashboards, and control algorithms. The results show that real-time energy monitoring and automated control can reduce unnecessary energy usage by up to 25%, improve responsiveness to occupancy patterns, and enable predictive maintenance. The system also supports remote access via web or mobile interfaces, allowing facility managers to make informed decisions. The findings suggest that remote monitoring and control systems offer significant potential to enhance energy efficiency, reduce operational costs, and contribute to sustainable building management practices.]]>
<![CDATA[Diagnosis of Electricity Distribution Network Disturbances Using Fault Tree Analysis ]]>
<![CDATA[Ramli Mahaddin Hutajulu]]>;
<![CDATA[Dino Erivianto]]>;
<![CDATA[Muhammad Erpandi Dalimunthe]]>
<![CDATA[ INFOKUM Vol. 13 No. 06 (2025): Infokum ]]>
Publisher : <![CDATA[Sean Institute ]]>
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<![CDATA[Disruptions in the electricity distribution network are one of the main problems that can reduce the reliability of electricity supply to customers. PT PLN ULP Balige as a customer service unit has the responsibility to ensure the continuity and quality of electricity distribution services in its operational area. This study aims to analyze the main causes of electricity distribution network disruptions using the Fault Tree Analysis (FTA) method. This method is used to identify the root causes of disruptions with a deductive approach arranged in the form of a fault tree. The data used in this study were obtained from disruption reports over the past year that occurred in the medium and low voltage distribution network at PT PLN ULP Balige. The results of the analysis indicate that several dominant factors causing disruptions include equipment component damage (such as transformers and cables), weather disturbances, and other external factors. With FTA modeling, logical relationships between causes can be systematically mapped, thereby facilitating the evaluation process and technical decision-making. This study is expected to be a basis for PT PLN ULP Balige in formulating prevention strategies and improving the reliability of the electricity distribution system through a more structured analytical approach.]]>
