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All Journal INAJEEE (Indonesian Journal of Electrical and Electronics Engineering)
Muhammad Barkah
Universitas Negeri Surabaya
Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Optimization of Seal Steam Turbine Pressure Control on CCPP Boiler System Using Fuzzy-PID Auto-Tuning Method Muhammad Barkah; Bambang Suprianto; Unit Three Kartini
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Vol. 9 No. 1 (2026): Februari
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajeee.v9n1.p48-55

Abstract

This study optimizes the High-Pressure to Turbine Seal Steam Pressure Control Valve system in a Combined Cycle Power Plant to address nonlinear characteristics and fluctuating load dynamics. Conventional fixed-gain controllers structurally fail to manage these conditions effectively. We propose a hybrid Relay Feedback with Fuzzy-PID strategy, employing a quantitative simulation design validated with industrial data from the Muara Tawar CCPP. Using a First Order Plus Dead Time model, the method integrates Relay Feedback for initial parameter identification and Fuzzy Logic for real-time PID adjustment. Evaluated via MATLAB/Simulink across various scenarios, the hybrid approach yielded superior transient performance, outperforming metaheuristic benchmarks (Particle Swarm Optimization (PSO), Ant Colony Optimization (ACO)) in stabilizing the system. Crucially, validation against real operational data demonstrated that the proposed method eliminated oscillatory valve behavior, yielding a massive improvement in actuator energy efficiency and significantly reducing the Root Mean Square Error (RMSE). The novelty lies in integrating Relay Feedback autotuning with Fuzzy self-tuning PID, explicitly validated using real operational data. This practical approach provides robust control and extends actuator lifespan by mitigating mechanical wear.
Co-Authors Bambang Suprianto . Unit Three Kartini