Browsing by Author "ศตวรรษ เมืองชื่น"
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- Itemแบบจำลองการควบคุมเชิงทำนายของระบบจัดเก็บพลังงานเสมือนสำหรับการควบคุมแรงเฉื่อยเสมือนและการปรับความถี่ในไมโครกริด ภายใต้การโจมตีทางไซเบอร์(มหาวิทยาลัยพะเยา, 2024) ศตวรรษ เมืองชื่นThis dissertation proposes the applications of model predictive control (MPC) - based virtual energy storage system (VESS) for virtual inertia control and frequency regulation under denial - of - service (DoS) attacks. Firstly, an improved resilient MPC (IR - MPC) - based VESS is introduced for enhancing microgrid virtual inertia control under DoS attacks. IR - MPC comprises an attack detector, an autoregressive (AR) - based signal estimator, and an MPC - based VESS controller. An attack detector was used to detect DoS attacks. An AR - based signal estimator is then used to estimate the feedback data that are subjected to DoS attacks. Then, an enhanced resilient MPC (ER - MPC) is presented for controlling proton exchange membrane electrolyzes (PEMEL) to regulate frequency under severe DoS attacks. The proposed ER - MPC consists of (1) the combination of AR model - based prediction and hold signal methods which are used to reconstruct attacked signals during severe DoS attacks, and (2) an MPC - based computation of control signal for the PEMEL stack. The simulation results revealed that under a DoS attack, the proposed IR - MPC and ER - MPC can successfully improve the microgrid virtual inertia emulation and frequency regulation. Additionally, the proposed IR - MPC and ER - MPC have a performance effect over the compared techniques in terms of the reduction in rate of change of frequency (RoCoF) deviation and frequency deviation during normal situations, DoS attacks, and disconnection of wind turbine generation.