INTERNATIONAL JOURNAL OF LATEST TECHNOLOGY IN ENGINEERING,
MANAGEMENT & APPLIED SCIENCE (IJLTEMAS)
ISSN 2278-2540 | DOI: 10.51583/IJLTEMAS | Volume XIV, Issue X, October 2025
The proposed RL-based adaptive damping controller achieved a 65% reduction in settling time and a 50% improvement in
damping ratio compared to conventional approaches. TABLE II. presents the performance comparison between conventional
Power System Stabilizer (PSS), Proportional-Integral (PI) controller, and the proposed Reinforcement Learning (RL)-based
adaptive controller. Fig. 3. comparing Conventional PSS, PI Controller, and RL-Based Adaptive Control for damping low-
frequency oscillations. Metrics include Damping Ratio, Settling Time, and Peak Overshoot. RL-Based Adaptive Control achieves
the highest damping ratio, lowest settling time, and lowest overshoot, indicating superior stability performance. Additionally,
frequency deviation was minimized, indicating improved dynamic response and system stability. The results clearly indicate that
integrating machine learning with adaptive control significantly enhances the system’s ability to detect and mitigate low-
frequency oscillations. The LSTM model provides superior prediction accuracy, allowing the RL-based controller to take pre-
emptive damping actions. The adaptive nature of the controller ensures continuous tuning of control parameters in response to
real-time grid dynamics, eliminating the limitations of static gain controllers. Furthermore, the framework demonstrated high
scalability and robustness when applied to larger IEEE test systems. Even under varying load and renewable generation
conditions, the model maintained stable damping performance without additional retraining, highlighting its adaptability.
Computational efficiency tests confirmed that the proposed system operates within real-time constraints, with an average
processing latency of less than 50 ms per data window, ensuring suitability for wide-area control deployment.
V. Conclusion
This paper presented a machine learning-assisted framework for the monitoring and damping control of low-frequency
oscillations in power systems, integrating real-time data acquisition, signal processing, predictive modeling, and adaptive control.
The proposed approach effectively leverages LSTM networks for accurate oscillation detection and prediction, while a
reinforcement learning-based adaptive controller dynamically optimizes damping performance under varying operating
conditions. Simulation studies on standard IEEE test systems demonstrated significant improvements in key performance metrics,
including damping ratio, settling time, peak overshoot, and frequency deviation, compared to conventional PSS and PI
controllers. The results highlight the framework’s ability to provide real-time, scalable, and robust oscillation mitigation, ensuring
enhanced system stability even in highly dynamic and uncertain grid environments. Overall, the study confirms that the
integration of machine learning with adaptive control offers a promising and practical solution for next-generation smart grids,
enabling resilient, self-regulating, and intelligent power system operation.
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