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International Journal of Electrical, Energy and Power System Engineering (IJEEPSE)

ijeepse
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Published by Universitas Riau

ISSN : - EISSN : 26544644 DOI : 10.31258

Core Subject : Science, Engineering,

Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy

The IJEEPSE is particularly concerned with the demonstration of applied science and innovative engineering solutions to solve problems on power, energy, wireless communication and, informatics. Original contributions providing insight into the use of renewable energy, power generation and smart transmission grids, energy conversation, communication, informatics and computer sciences.

Arjuna Subject : Energi (semua kategori) - Teknik Energi dan Teknologi Daya

Articles 116 Documents

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Comparison of Transient Mitigation through Synchronous Closing and Capacitor Switching in 150 kV Networks Firdaus; Apriyal, Derry; Azhari Zakri, Azriyenni; Ihsan, Boy; Sultana, Beenish
International Journal of Electrical, Energy and Power System Engineering Vol. 8 No. 3 (2025): The International Journal of Electrical, Energy and Power System Engineering (I
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.8.3.323-336

This study addresses the challenge of transient voltage and current surges caused by capacitor bank switching in high-voltage transmission systems, which can compromise equipment integrity and system stability. The research focuses on optimizing the mitigation of these transients in a 150 kV transmission line using the synchronous closing breaker method. Simulations were conducted in MATLAB/Simulink using actual parameters provided by the power utility. To verify the accuracy of the Simulink model and its results, validation was performed in DIgSILENT PowerFactory by comparing steady-state voltage responses following capacitor switching. With the model validated, three operating scenarios were examined: no capacitor bank, conventional capacitor bank switching, and with the implementation of synchronous closing breakers. The synchronous closing method significantly reduced transient voltage and current magnitudes compared to conventional switching. These outcomes confirm the effectiveness of the synchronous closing breaker in minimizing transient disturbances. The findings contribute to the development of improved transient mitigation strategies and offer a practical reference for large-scale capacitor bank deployment, particularly in smart grid applications. This method provides a cost-effective and scalable approach for improving power quality in modern high-voltage transmission networks.

Design of Battery Energy Storage System as Backup Power for Suralaya Coal-Fired Power Plant Abadi, Candra Luthfian; Mukti, Nurlita Chandra; Hudaya, Chairul
International Journal of Electrical, Energy and Power System Engineering Vol. 9 No. 1 (2026): The International Journal of Electrical, Energy and Power System Engineering (I
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.9.1.1-13

Coal dominance in Indonesia's electricity generation poses serious environmental challenges due to CO₂ emissions and harmful pollutants. In support of the Net Zero Emissions (NZE) 2050 target, alternative solutions are needed to reduce reliance on fossil-based power plants during peak load conditions. Battery Energy Storage System (BESS) offers a promising solution due to its ability to store and deliver energy efficiently. This study determines the optimal and economically feasible BESS capacity at Suralaya Coal-Fired Steam Power Plant Units 5–7 (600 MW each, total 1,800 MW). Technical analysis calculates the required reserve power and storage capacity during operational disruptions, covering energy (MWh), power (MW), and battery capacity (Ah) based on load data, disruption duration, and battery efficiency. Economic analysis applies the Cost Benefit Analysis (CBA) method, incorporating Net Present Value (NPV), Payback Period (PP), and Cost Benefit Ratio (CBR) over a 15-year period. Results indicate that a Lithium-Ion BESS with 467.83 MWh energy, 200 MW power, and 311.887 Ah capacity meets backup power requirements. The project is economically feasible, with a CBR of 5.46, a PP under 3 years, and a positive NPV.

Medium Voltage Cable Health Index Integrating Diagnostic Data and Feeder Load for Reliability Assessment Negara, Pande Putu Priyanithi Dharsania; Sudiarto, Budi
International Journal of Electrical, Energy and Power System Engineering Vol. 9 No. 1 (2026): The International Journal of Electrical, Energy and Power System Engineering (I
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.9.1.25-38

Reliable operation of medium-voltage (MV) distribution networks depends strongly on the condition of XLPE-insulated cable systems. However, existing diagnostic methods, including Partial Discharge (PD), Tan Delta (TD), and Very Low Frequency (VLF) testing, are typically interpreted in isolation, limiting their relevance to operational decision-making. This study develops a unified Health Index (HI) framework that integrates these three diagnostic parameters with feeder loading data under real field conditions. Using Min–Max normalization and dual weighting schemes, the model was applied to 33 cable segments in a tropical MV distribution network. HI values were statistically correlated with the System Average Interruption Duration Index (SAIDI) and Energy Not Supplied (ENS). Results show that the dielectric-oriented weighting scheme yields stronger correlation with SAIDI (r = 0.967, p < 0.05), while equal weighting enhances sensitivity to ENS. Although feeder loading contributes to degradation exposure, intrinsic insulation condition remains the primary determinant of health classification. High-risk segments are consistently identified under both schemes, confirming the structural robustness of the model. The proposed framework provides an empirically validated foundation for condition-based and risk-based asset management in MV distribution systems.

Analysis of The Effect of Rooftop PV Integration on The Reliability of Medium Voltage Power Distribution Network Jannah, Miftahul; Nasution, Muhammad Fadli; Hudaya, Chairul
International Journal of Electrical, Energy and Power System Engineering Vol. 9 No. 1 (2026): The International Journal of Electrical, Energy and Power System Engineering (I
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.9.1.14-24

The service area of PLN UP3 Cikupa possesses significant potential for the utilization of rooftop photovoltaic (PV) systems, particularly in the industrial sector, which generally has large roof areas and high energy consumption. This study aims to analyze the impact of rooftop PV integration on the reliability of the medium-voltage distribution system in the Stanley feeder. The evaluation was conducted through simulations using ETAP software under two load conditions: peak load and no-load, with PV penetration levels ranging from 0% to 100%. The results indicate that up to 100% PV penetration (4 MW), no voltage violations occurred at the CKP92 substation. However, there was a significant decline in the power factor, dropping to 7% under peak load conditions and to -100% under no-load conditions starting at 20% penetration, indicating reverse power flow. The PV penetration was further increased beyond 100%, and it was found that the maximum PV penetration without violating voltage limits was 400% (16 MW). At 400% penetration, overvoltage occurred on several buses, and overload was observed on specific cables, with the three-phase short-circuit current approaching the system protection threshold (15.977 kA out of a 16 kA limit). Nonetheless, rooftop PV integration provided benefits such as improved voltage profiles and enhanced system reliability, as indicated by reductions in SAIDI, SAIFI, and EENS indices. These findings suggest that rooftop PV can be optimally integrated up to a certain limit without compromising distribution system performance.

The Internet of Things-based Smart Aquarium for Goldfish Priyandoko, Gigih; Mukhsim, Mohamad; Subhan, M. Uhida; Fauzi, M. Lutfi
International Journal of Electrical, Energy and Power System Engineering Vol. 9 No. 1 (2026): The International Journal of Electrical, Energy and Power System Engineering (I
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.9.1.48-60

Maintaining an ornamental fish aquarium requires continuous water quality monitoring and regular feeding management. However, manual monitoring is often inefficient and inconsistent, especially for users with limited time. Water temperature and pH are critical parameters that influence the health and survival of goldfish (Carassius auratus). This study proposes an Internet of Things (IoT)-based smart aquarium system that can automatically monitor and control water quality while providing scheduled feeding management. The system integrates an ESP32 microcontroller with DS18B20 temperature sensors, PH-4502C pH sensors, a DS3231 real-time clock, servo-based feeding mechanisms, and relay-controlled actuators for heating, cooling, and pH regulation. Sensor data is transmitted to a Firebase Realtime Database, enabling real-time monitoring and remote configuration via an Android app developed with MIT App Inventor. The main contribution of this work is the integration of real-time monitoring, automated environmental control, and configurable feeding management within a unified IoT architecture. Unlike previous studies that focused mainly on monitoring or single-parameter control, the proposed system introduces a time-based safety mechanism that uses the real-time clock (RTC) to prevent excessive pH correction. It also allows for the remote adjustment of feeding parameters through a cloud-based platform. The experimental results demonstrate that the system successfully maintains the water temperature within the range of 24–26 °C and the pH level between 6.5 and 7.5. This is achieved while executing scheduled feedings twice per day and ensuring reliable actuator performance. The system demonstrates stable operation with an average data transmission latency of approximately one second, indicating effective Internet of Things (IoT) communication. Overall, the smart aquarium system provides a practical, scalable, and user-friendly solution for managing aquariums intelligently, significantly reducing the need for manual intervention to maintain optimal environmental conditions for goldfish.

Impact of Periodic Cycling on Lithium Battery Performance in Standby UPS Systems: A Case Study of a Vertiv 100 kW Sithole, Tshepo; Sumbwanyambe, Mbuyu
International Journal of Electrical, Energy and Power System Engineering Vol. 9 No. 1 (2026): The International Journal of Electrical, Energy and Power System Engineering (I
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.9.1.39-47

Lithium Iron Phosphate batteries in standby uninterruptible power supply (UPS) applications are susceptible to calendar aging when infrequently cycled, yet empirical field data on performance recovery strategies for large-scale industrial systems remain scarce. This study investigates the performance degradation of a Vertiv 100 kW three-phase UPS paired with two strings of 8 Vision Lithium batteries (100 Ah, 52.4 Vdc each), installed in 2021 at a commercial facility with a stable 45 kW load. After three years of minimal cycling, clients reported reduced backup duration, intermittent battery alarms, and DC breaker trips, attributed to calendar aging effects including elevated internal resistance and capacity fade under prolonged high state-of-charge conditions. A manual discharge/recharge protocol was implemented twice weekly using the site load, with discharge duration recorded across successive cycles. Battery performance recovered progressively, with discharge time increasing from 3 minutes to 18 minutes over 10 cycles, corresponding to a State of Health improvement from 2.68% to 16.10%. Following this recovery, the system was programmed for automatic periodic discharges. These findings demonstrate that periodic cycling effectively mitigates calendar aging in standby LFP systems and provide a practical framework for preventive battery management in low-outage industrial UPS environments.

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Assoc. Prof, Dr Azriyenni

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ijeepse@eng.unri.ac.id

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ijeepse@eng.unri.ac.id

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Kampus Bina Widya, Jl. HR. Soebrantas Km. 12.5 Panam, Pekanbaru, Riau, Indonesia 28293 Website : www.ijeepse.ejournal.unri.ac.id No. Telp/Faks : +62 761 66596 / 66596 Email: ijeepse@eng.unri.ac.id

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Kota pekanbaru,

Riau

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Assoc. Prof, Dr Azriyenni

Contact Email ijeepse@eng.unri.ac.id

Phone +6276166596

Journal Mail Official ijeepse@eng.unri.ac.id

Editorial Address Kampus Bina Widya, Jl. HR. Soebrantas Km. 12.5 Panam, Pekanbaru, Riau, Indonesia 28293 Website : www.ijeepse.ejournal.unri.ac.id No. Telp/Faks : +62 761 66596 / 66596 Email: ijeepse@eng.unri.ac.id

Location Kota pekanbaru, Riau INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Assoc. Prof, Dr Azriyenni

Contact Email
ijeepse@eng.unri.ac.id

Phone
+6276166596

Journal Mail Official
ijeepse@eng.unri.ac.id

Editorial Address
Kampus Bina Widya, Jl. HR. Soebrantas Km. 12.5 Panam, Pekanbaru, Riau, Indonesia 28293 Website : www.ijeepse.ejournal.unri.ac.id No. Telp/Faks : +62 761 66596 / 66596 Email: ijeepse@eng.unri.ac.id

Location
Kota pekanbaru,

Riau

INDONESIA