ArticleScientific reports2026
Resilient frequency stabilization of renewable-penetrated microgrids via deep learning and machine learning.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The intrinsic variability of wind generation necessitates accurate wind speed forecasting to minimize active power imbalance between supply and demand and thereby enhance frequency stability in microgrids (MGs). In this context, this paper investigates wind speed prediction at four geographically distinct sites using Support Vector Regression (SVR) and Deep Neural Networks (DNN) and analyses their impact on microgrid (MG) frequency regulation. The predicted wind data are incorporated as disturbances in a MG system comprising Wind Turbine generator (WTG), Diesel Engine Generator (DEG), Aqua-Electrolyser (AE), Fuel Cell (FC), Battery Energy Storage System (BESS), Flywheel Energy Storage System (FESS), and Ultra Capacitor (UC) units. To mitigate frequency deviations caused by load variations and wind power uncertainty, a PID controller optimized using a hybrid Particle Swarm Optimization (PSO) and Grey Wolf Optimization (GWO) algorithm is proposed. The forecasting analysis indicates that the SVR model outperforms the DNN model, reducing prediction errors by up to 52.94% in MAE, 44.59% in MAPE, 83.54% in MSE, and 59.55% in RMSE. Simulation results further demonstrate that the hybrid PSO-GWO tuned PID controller significantly improves dynamic performance compared with PSO-PID and GWO-PID controllers. For the SVR-based prediction case, the proposed controller reduces maximum overshoot (Mp) by 50%, settling time (Ts) by 16.13%, and integral square error (ISE) by 77.78% compared with PSO, while achieving 33.33%, 10.86%, and 50% improvements over GWO, respectively. Similarly, for the DNN-based case, the hybrid controller achieves further improvements of 92.5% in Mp, 21.21% in Ts, and 57.14% in ISE compared with PSO. The proposed approach is validated through time- and frequency-domain analyses and real-time implementation using the OPAL-RT Hardware-in-the-Loop (HIL) platform, confirming its effectiveness in enhancing the stability and reliability of renewable-integrated MGs.
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