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INFOKUM
Published by SEAN INSTITUTE
ISSN : 23029706     EISSN : 27224635     DOI : -
Core Subject : Science,
Computer Science & IT
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
Arjuna Subject : Ilmu Komputer (semua kategori) - Kecerdasan Buatan
Articles 860 Documents
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Performance Analysis of Adaptive Defense Schemes (ADS) in Protection and Reliability Systems of Electric Power Transmission Systems Tri Ismail Ricky Ramadhan; Solly Aryza; Muhammad Erpandi Dalimunthe
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3092

Abstract

The reliability of the electric power transmission system is a crucial factor in ensuring the continuity of electrical energy distribution to customers. Disturbances in the transmission system can cause significant technical and economic losses. Therefore, the application of Adaptive Defense Schemes (ADS) was developed as an effort to improve the performance of the protection system and the reliability of the electric power transmission system. This study aims to analyze the performance of ADS on the Barikin-Tanjung bay line electric power transmission system and evaluate its technical and economic effectiveness. The disturbance data used include the number of disturbances, the duration of disturbances, and Energy Not Supplied (ENS) during the period 2015–2022, which is divided into the pre-implementation period of ADS (2015–2018) and post-implementation period of ADS (2019–2022). The Autoregressive Integrated Moving Average (ARIMA) method is used to analyze the characteristics of time series data and forecast disturbances in the period 2023–2026. The results of the analysis show that the implementation of ADS is able to reduce the number of disturbances, the duration of disturbances, and the ENS value significantly in the post-implementation period. The selected ARIMA models, namely ARIMA (2,1,1) for the number of disturbances, ARIMA (3,1,1) for the duration of disturbances, and ARIMA (2,1,1) for ENS, produced stable predictions with residuals without significant autocorrelation. In addition, the results of the economic analysis showed that the implementation of ADS was able to reduce the company's potential losses by more than 50% compared to the scenario without ADS. Thus, ADS has proven effective in improving the reliability of the electric power transmission system and is worthy of being recommended for implementation in other transmission lines with high levels of vulnerability.
The Role of the Subdistrict Head in the Development of the Red and White Village Cooperative in Nagrak, Sukabumi Regency Ening Lasminingsih; Hardiyanto Rahman
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3084

Abstract

This research was motivated by the lack of knowledge and understanding among the administrators and members of the Red and White Village Cooperative regarding the development of business types and the utilization of village potential. The purpose of this study was to analyze and examine the role of the Subdistrict Head (Camat) in providing guidance to the Red and White Village Cooperative. The study employed a descriptive qualitative method. The data sources consisted of primary and secondary data. Data collection techniques included observation, interviews, and documentation, while data analysis was conducted through data reduction, data presentation, and conclusion drawing. The results of the study indicate that the role of the Camat in the Red and White Village Cooperative is crucial as a facilitator, advisor, and supervisor at the regional level. The Camat of Nagrak has carried out a strategic role as the main facilitator and institutional mobilizer through concrete activities such as socialization programs, monitoring of Special Village Deliberation Meetings (Musdesus), assistance with legal documentation (Notarial Deeds), and monitoring of business initiatives. These measures demonstrate that the Camat is not only focused on the legal aspects of cooperative establishment but also encourages the cooperative’s function as an independent and productive pillar of the village economy. Thus, the implementation of the Camat’s role can generally be considered adequate and has shown positive results during the initial stages and legal administration process. However, to ensure sustainability and optimize its impact, this role still requires strengthening and continuous guidance. Such optimization should focus on overcoming internal challenges, particularly the limitations of human resources both at the subdistrict and village levels, as well as strengthening coordination mechanisms among stakeholders.
Evaluating Hybrid Machine Learning with Bias Correction for Daily Rainfall Prediction in Yogyakarta, Indonesia Ayu Aprilia; Dewi Malasari; Amir Supriyanto; Syafriadi, Syafriadi
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3088

Abstract

Rainfall is an important climate variable with high variability in tropical regions such as Indonesia, thus requiring accurate forecasting methods. This study aims to evaluate the performance of a machine learning-based hybrid model, analyse the effectiveness of bias correction on reanalysis data (ERA5 and NASA POWER), and assess the model’s ability to represent variability and extreme events. The data used consists of an integration of BMKG observations and reanalysis data for the 2022–2025 period in the Yogyakarta region. The methods employed include a two-stage modelling approach (classification and regression) using the Random Forest and Gradient Boosting algorithms, with evaluation based on RMSE, MAE, and R². The results show a bimodal rainfall pattern, with peaks in February (10.60 mm/day) and November (11.72 mm/day), and a dry period from June to September, with a minimum in September (0.59 mm/day). Rainfall anomalies indicate significant annual variability, with negative values in 2022–2023 and positive values in 2024–2025. NASA POWER data tends to be overestimated, particularly in September, with a difference of 11.62 mm/day. The hybrid model reduced bias and improved data fit (RMSE 12.01 mm; MAE 6.85 mm), but yielded a negative R² value, indicating limitations in representing variability and extreme events.
Repairing Electrical Power Imbalances on the MDP Panel for Operational Reliability at State Vocational School 1 Stabat Muhammad Ady Pratama; Haris Gunawan; Parlin Siagian
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3093

Abstract

Power imbalance in a three-phase system is a critical issue that can disrupt the operational reliability of equipment, particularly in installations such as SMK Negeri 1 Stabat. This problem was identified in the Main Distribution Panel (MDP) which showed an imbalance in the load between phases (R, S, and T), which caused an increase in the current flowing in the neutral conductor. Current measurements conducted over five days showed a high percentage of imbalance, especially during the day (peak operating hours), with the highest value reaching 26.24% on Tuesday afternoon, far exceeding the ideal limit (generally <10%). The impact of this imbalance is power losses, increased temperatures in cables and transformers, and potential equipment damage. To overcome this problem and improve the reliability of the system, three main improvement solutions were implemented: (1) Replacing the input cable from MDP to several SDPs from 4x16mm² to 3x50mm² + N to adjust the load, (2) Repairing the cable lugs in the SDP panels that were corroded or loose to eliminate voltage losses, and (3) Increasing the school's electrical power from 53 Kva (MCCB 80A) to 66 Kva (MCCB 100A). The implementation of this solution succeeded in reducing the trip frequency on the main MCCB and increasing the operational reliability of the electrical system as a whole.
Analysis of the Interlock Spreader System for Lifting Containers on Rubber Tyred Gantry (RTG) Hadi Arbi; Siti Anisah; Muhammad Erpandi Dalimunthe
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3094

Abstract

Rubber Tyred Gantry is one of the heavy equipment used at container ports to carry out container loading and unloading activities. One of the main components of the RTG is the spreader, which functions to lift and lower the container through a twistlock system at all four corners. However, in practice, technical problems often arise such as the failure of the twistlock lock, which has the potential to pose a risk of work accidents and equipment damage. This study discusses the interlock system on the RTG spreader as a safety and control system in the container lifting process. The analysis was carried out through experiments by observing the electro-mechanical working system on the spreader seen directly in the field and simulating the logic of the interlock using Zelio Soft 2. If the twislock does not fit perfectly into the twislock hole, then the landed light does not turn on and the interlock process cannot be carried out. The landed light is on, so the container lock process can be done by the operator by pressing the lock button on the master control in the operator's cabin.And the lock process is complete, then the container is ready to be lifted. The interlock system is effective in preventing twistlock locking if the spreader has not been landed and hoist lifting if the lock process is not complete. The implementation of this interlock increases safety and effectiveness in the loading and unloading process at the Port and also requires regular maintenance of the landed sensor (proximity) as well as the adjustment of the distance of the landed sensor to the twis tlock pin needs to be carefully adjusted to prevent detection failure. By implementing this system, the level of work safety and operational efficiency of RTG can be significantly improved.
Analysis of the Effect of Transformer Load Balancing on the Reduction Technical Shrinkages in Distribution Substations aAt Feeders JN 05 At PT PLN (PERSERO) ULP JANARATA Ivan Kristiawan Zega; Dino Erivianto; Muhammad Erpandi Dalimunthe
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3095

Abstract

Electricity is a vital component in supporting activities across various sectors, particularly in industry. The reliability of the power distribution system is crucial to maintaining the continuity of energy supply. However, during the distribution process, power losses (technical losses) frequently occur, primarily due to load imbalance in distribution transformers. This study aims to analyze transformer loading on the JN 05 feeder at ULP Janarata by calculating the load percentage, phase current imbalance, and power losses caused by neutral current. A quantitative approach was used, based on field measurements of 16 transformers under Peak Load Conditions (WBP) and Off-Peak Load Conditions (LWBP). Prior to load balancing, total power losses due to neutral current reached 10,190.37 kWh during LWBP and 3,733.41 kWh during WBP each month. After load balancing was performed between phases, technical losses were reduced by 13,923.77 kWh per month. These results indicate that load balancing is an effective method to reduce power losses and improve the efficiency of the distribution system.
Analysis of Pick up and Slope Settings of Differential Relays on 60 MVA Power Transformers at Namorambe Substation Muhammad Aditya; Siti Anisah; Haris Gunawan
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3097

Abstract

This study analyzes the pickup and slope settings of differential relays used for the protection of a 60 MVA power transformer at the Namorambe Substation. Differential relays play an important role in detecting internal faults in transformers by comparing the current entering and leaving the protected zone. Improper relay settings may lead to maloperation, reduced system reliability, or failure to isolate faults, which can disrupt power system stability. Therefore, accurate determination of pickup current and slope characteristics is essential to ensure reliable transformer protection performance. The research method used in this study is a quantitative analysis approach based on transformer operational data, current transformer (CT) ratios, nominal transformer capacity, and relay parameter calculations. The pickup setting was determined by calculating the minimum differential current required for relay operation, while the slope setting was analyzed to maintain relay stability during external faults and magnetizing inrush currents. Data analysis was carried out by comparing calculation results with standard relay protection principles and transformer operating conditions. The results show that the selected pickup and slope settings provide effective protection sensitivity while maintaining system stability under normal and fault conditions. The relay is capable of distinguishing internal faults from transient disturbances, thereby minimizing false trips and improving transformer operational reliability. The study concludes that proper differential relay coordination on the 60 MVA transformer at Namorambe Substation significantly enhances protection performance and contributes to the continuity and safety of electrical power distribution systems.
Analysis of Village Fund Management in Village Development Efforts to Improve the Welfare of Farmers in Purwodadi Village, Sunggal District Dina Mariana Pasaribu; Rahmad Sembiring
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3098

Abstract

This study aims to determine the factors of potential, human resources, capital, village fund allocation, consumption, infrastructure and family responsibilities relevant to improving the welfare of farmers in Purwodadi Village, Sunggal District. The implementation of regional autonomy and decentralization aims to improve the efficiency and effectiveness of resource management, the quality of public services, and community welfare. Empowerment based on village development through village funds focuses on improving welfare, the quality of human resources, and reducing poverty by using local potential, so that the village becomes independent. Although Purwodadi Village has a significant budget and economic potential, the welfare of its people is still low. This is reflected in the income that depends on the traditional and simple agricultural sector, and the condition of the houses which are still very simple. In addition, the management of village funds is less transparent and professional, with the distribution of aid that is not evenly distributed, causing public distrust of the management of these funds and contributing to the low level of welfare. This study uses the Confirmatory factor analysis (CFA) and Multiple Linear Regression statistical analysis models, with a total of 150 respondents collected by distributing questionnaires. The results of the Confirmatory Factor Analysis (CFA) analysis show that of the seven factors, four factors that are worthy of increasing the welfare of farmers in Purwodadi Village, Sunggal District have a significant influence, including potential, capital, infrastructure and village fund allocation. The results of multiple linear regression show that in the partial hypothesis test, these four factors have a significant influence on increasing the welfare of farmers in Purwodadi Village, Sunggal District and in the simultaneous hypothesis, potential, capital, infrastructure and village fund allocation together have a positive and significant influence on the welfare of farmers in Purwodadi Village, Sunggal District.
A Performance Analysis of Electric Power Transmission Systems Using Ultra-High Voltage Direct Current (UHVDC) Technology Miftah Hadi R Harahap; Zuraidah Tharo; Parlin Siagian
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3099

Abstract

The increasing demand for electrical energy and the growing distance between power generation sources and load centers require transmission systems capable of delivering large amounts of power efficiently and reliably. Ultra-High Voltage Direct Current (UHVDC) technology has emerged as an effective solution for long-distance, high-capacity power transmission, offering lower power losses and higher efficiency compared to conventional transmission systems. This study aims to analyze the performance of electric power transmission systems using UHVDC technology, identify factors affecting system performance, and evaluate the impact of transmission distance on system efficiency and reliability. The research employs a quantitative descriptive approach through modeling and simulation of a UHVDC transmission system. Key performance parameters analyzed include power losses, transmission efficiency, voltage stability, and power transfer capability under various transmission distance scenarios. The results indicate that UHVDC systems are capable of transmitting large-scale power over long distances with relatively low power losses. Although increasing transmission distance leads to higher power losses, the rate of increase is significantly lower than that of conventional alternating current (AC) transmission systems, allowing UHVDC systems to maintain high efficiency. Furthermore, the UHVDC system demonstrates good voltage stability and operational reliability when operating within its design limits. Based on the findings, it can be concluded that UHVDC technology is a reliable and efficient solution for long-distance, high-capacity power transmission and has strong potential to support large-scale renewable energy integration and the development of modern power system infrastructure.
ANALYSIS OF CUSTOMER PROTECTION IN BANKING CREDIT AGREEMENTS IN INDONESIA Muhamad Agung Dharmajaya
INFOKUM Vol. 8 No. 1, Desembe (2019): Data Mining,Image Processing and artificial intelligence
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v8i1, Desembe.3100

Abstract

This study aims to analyze the forms of legal protection for customers (debtors) in bank credit agreements in Indonesia, as well as the obstacles encountered in their implementation. Credit agreements often take the form of standard contracts, which tend to place customers in a weaker bargaining position compared to banks. This study uses a normative method with a statutory and conceptual approach, analyzing the legal principles of agreements and regulations related to consumer protection in financial services. Customer-debtor protection is divided into preventive protection through restrictions on bank freedom of movement based on Article 18 of the Consumer Protection Law and the Financial Services Authority (OJK) transparency regulations, which threaten to render exoneration clauses null and void (van rechtswege nietig). Repressive protection is available through lawsuits for Unlawful Acts or Abuse of Circumstances (misbruik van omstandigheden) in court, as well as non-litigation channels through the Alternative Dispute Resolution Agency for the Financial Services Sector (LAPS SJK). However, the OJK's supervisory function is considered ineffective in practice due to its reactive, complaint-based nature, limited supervisory human resources, high information asymmetry, and lenient administrative sanctions that have not yet provided a deterrent effect for the banking industry. Conclusion: While legal instruments for customer protection are well-structured, enforcement of the principle of contractual balance remains weak in practice. The OJK needs to transform its supervisory system into a digital-proactive one, utilizing artificial intelligence-based supervisory technology (SupTech) (AI Contract Review) to screen draft bank contracts en masse and strengthen sanctions in the form of product license suspensions for banks that violate this principle.

Page 86 of 86 | Total Record : 860

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