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Journal of Power, Energy, and Control
Published by MSD Institute
ISSN : -     EISSN : 30478804     DOI : -
Core Subject : Science, Engineering,
Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Mechanical Engineering
Journal of Power, Energy, and Control (PEC) mainly focuses on power engineering, energy engineering, renewable energy, control systems in energy application, and various sustainable energy applications. PEC welcomes the submission of high quality original research papers, review papers, and case study reports.
Arjuna Subject : Energi (semua kategori) - Teknik Energi dan Teknologi Daya
Articles 5 Documents
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Search results for , issue "Vol. 2 No. 2 (2025)" : 5 Documents clear
Time Delay Compensation for the Superheated Steam Temperature Control System Based on a Practical Feedforward Gain-Scheduling Cascade Control Design with Stability Analysis Gholaminejad, Tahereh; Dadkhah-Tehrani, Fereshteh; Maboodi, Mohsen
Journal of Power, Energy, and Control Vol. 2 No. 2 (2025)
Publisher : MSD Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62777/pec.v2i2.46

Abstract

Controlling the temperature of superheated steam (SST) is essential for the safe and efficient operation of combined cycle power plants, but it has become challenging due to frequent load variations and safety requirements. Traditional PI controllers may struggle to provide optimal performance because of non-linearity, time delays, and disturbances, particularly under wide-range load conditions. This paper proposes a new feedforward gain-scheduling cascade control strategy that compensates for time delays while ensuring stable SST without complicating the control system. The method incorporates a well-defined feedforward control mechanism into a gain-scheduling PI structure, enabling quick adjustments of the water spray control valve to prevent SST overshoots during sudden power fluctuations. A stability analysis is included, and the proposed strategy has been successfully simulated and implemented at two real combined cycle power plants in Iran, demonstrating its effectiveness in maintaining smooth temperature control and enhancing power output without adding complexity to the system.
Performance Analysis of Over Current Relay on 20 kV Distribution Network Feeders Using MATLAB Hasibuan, Arlina; Daud, Muhammad; Putri, Raihan
Journal of Power, Energy, and Control Vol. 2 No. 2 (2025)
Publisher : MSD Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62777/pec.v2i2.57

Abstract

Short circuit disturbances in electrical distribution systems can cause severe damage to equipment and compromise system stability if not properly addressed. To mitigate these impacts and maintain system reliability, protection devices such as overcurrent relays (OCR) are widely used to detect and automatically isolate overcurrent conditions. This study aims to analyze the magnitude of short circuit current and evaluate the performance of OCR in responding to faults in a 20 kV medium-voltage distribution network. The analysis was conducted using MATLAB Simulink, modeling the distribution system with parameters adjusted to actual system conditions. The simulation was carried out under two scenarios: normal operating conditions to ensure the OCR remains inactive when the current is within safe limits, and fault conditions to evaluate the accuracy and speed of the OCR response to overcurrent events. Simulation results show that the magnitude of the short circuit current decreases with the distance from the source, with values of 5,565.92 A at 5% of the feeder length, 1,367.25 A at 25%, 698.52 A at 50%, 468.87 A at 75%, and 352.83 A at 100%. Under normal conditions, the current waveform remains stable throughout the 0.2-second simulation period. In contrast, under fault conditions, a current surge exceeding the threshold occurs at 0.1 seconds, triggering the OCR. The relay responds promptly and accurately in accordance with the designed inverse-time characteristics, demonstrating its effectiveness and reliability in detecting and clearing short circuit faults in 20 kV distribution networks.
Voltage Surge Estimation in Inverter-Cable High-Impedance Load System Wilson, Benjamin Egyin; Armah, Ebenezer; Tsikata, Nutifafa
Journal of Power, Energy, and Control Vol. 2 No. 2 (2025)
Publisher : MSD Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62777/pec.v2i2.62

Abstract

This paper presents a theoretical analysis of inverter–cable–high-impedance load systems using transmission line theory. High-frequency inverters with short voltage rise times can induce severe voltage surges at the load terminal due to impedance mismatch and wave reflections. An analytical expression is derived to estimate the peak terminal voltage as a function of the inverter rise time and cable propagation delay. Simulation results obtained using MATLAB confirm that the peak voltage can surge up to twice the DC link value (300 V for a 150 V DC source) when the inverter rise time is less than three times the cable propagation delay. To mitigate this overvoltage, a dV/dt filter is designed for worst-case rise-time conditions (step input), enhancing surge suppression without requiring redesign across varying switching speeds. The proposed method offers a practical, cost-effective solution for long-cable applications in high-frequency inverter systems.
Security Constrained Optimal Power Flow on A 132 kV Line with Service Potential Transformer Substations: A Case Study of Juja-Rabai Line Kitheka, Joel Mwithui
Journal of Power, Energy, and Control Vol. 2 No. 2 (2025)
Publisher : MSD Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62777/pec.v2i2.66

Abstract

The frequent power outages in transmission lines have been associated with generation station expansion to meet growing power demand without corresponding transmission infrastructure development, leading to exceeded loadability limits and system outages. This paper utilized PowerWorld simulator and a modeled Juja-Rabai power network to analyze secure optimal power flow conditions of a 132 kV transmission line with installed Service Potential Transformer (SPT) substations that address power demand from scattered villages near high voltage lines. The study focused on economic load dispatch of three thermal power plants (Thika, Rabai, and Kipevu) supplying power via conventional and non-conventional substations. Security constrained economic load dispatch, optimal power flow, and security constrained optimal power flow were analyzed under both pre-contingency and post-contingency states, including forced contingency scenarios. The results revealed that generating stations successfully adjusted their economic dispatch to achieve secure and economical operation, eliminating line outage risks. The analysis demonstrated that up to nine SPT substations can be optimally terminated on a 132 kV line while maintaining voltage stability and system security. The SCOPF methodology effectively balanced economic optimization with security requirements, providing a robust framework for transmission system planning in developing countries and supporting the viability of SPT technology for rural electrification.
Control Strategy Assessment: PID and Fuzzy-PID for Compound DC Motor Systems Sam-Okyere, Yaw Amankrah; Osei-Kwame, Emmanuel; Issaka, Dienatu; Arkorful, Isaac Papa Kwesi
Journal of Power, Energy, and Control Vol. 2 No. 2 (2025)
Publisher : MSD Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62777/pec.v2i2.74

Abstract

Compound DC motors, prized for their high torque and speed in industrial applications, demand robust control under nonlinear conditions. This study advances the field of Adaptive Neuro-Fuzzy Interface (ANFIS) by comparing a Ziegler-Nichols-tuned Proportional-Integral-Derivative (PID) controller with a novel ANFIS-PID controller for a compound DC motor. Unlike prior work, the research focuses on the unique dynamics of compound motors for real-time applications. Using MATLAB Simulink simulations. Performance was assessed via overshoot, rise time, settling time, and steady-state error under no-load and full-load conditions. The PID controller yielded 11.789% overshoot, 1.140s rise time, and 2.251s settling time, while the ANFIS-PID achieved 6.989% overshoot, 0.951s rise time, and 1.962s settling time, with a 50% lower steady-state error. These results, validated across 10 runs (p < 0.05), highlight the ANFIS-PID’s superior adaptability to the motor’s series-shunt dynamics, offering a 40.7% overshoot reduction.

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