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This paper presents a novel hierarchical Internet of Things (IoT)-based scheme for Microgrid-Enabled Intelligent Buildings to achieve energy digitalization and automation with a renewable energy self-consumption strategy. Firstly, a hierarchical structure of Microgrid-Enabled Intelligent Buildings is designed to establish a two-dimensional fusion layered architecture for the microgrid to interact with the composite loads of buildings. The building blocks and functions of each layer are defined specifically. Secondly, to achieve transparent information fusion and interactive cooperation between the supply-side and demand-side, a state transition mechanism driven by a combination of time and events is proposed to activate the real-time and mutual response of generation and loads dynamically. Thirdly, based on the above hierarchical fusion structure and data-driven state transition mechanism, a power balance control algorithm driven by a self-consumption strategy is further proposed to achieve the autonomous balance of supply and demand. Finally, the IoT Microgrid Laboratory at Aalborg University is introduced to show how to implement this novel hierarchical IoT-based scheme in a Microgrid-Enabled Intelligent Building, and the power consensus control method based on the state transition mechanism is verified to achieve a renewable energy self-consumption strategy.
Yanpeng Wu; Ying Wu; Josep M. Guerrero; Juan C. Vasquez; Emilio José Palacios-García; Yajuan Guan. IoT-enabled Microgrid for Intelligent Energy-aware Buildings: A Novel Hierarchical Self-consumption Scheme with Renewables. Electronics 2020, 9, 550 .
AMA StyleYanpeng Wu, Ying Wu, Josep M. Guerrero, Juan C. Vasquez, Emilio José Palacios-García, Yajuan Guan. IoT-enabled Microgrid for Intelligent Energy-aware Buildings: A Novel Hierarchical Self-consumption Scheme with Renewables. Electronics. 2020; 9 (4):550.
Chicago/Turabian StyleYanpeng Wu; Ying Wu; Josep M. Guerrero; Juan C. Vasquez; Emilio José Palacios-García; Yajuan Guan. 2020. "IoT-enabled Microgrid for Intelligent Energy-aware Buildings: A Novel Hierarchical Self-consumption Scheme with Renewables." Electronics 9, no. 4: 550.
To avoid transient jumps at the switching time between two operating modes in microgrids, this paper proposes a linear quadratic-based optimal bumpless controller with two degrees of freedom (DOF) to suppress the transient disturbance and realize seamless switching between mode-dependent controllers. By minimizing the transient performance criteria, which contains both the reference tracking error and the controller tracking error, this bumpless algorithm not only effectively forces the latent controller to track the active controller, but also guarantees the plant output track the reference as close as possible. For the different control objectives of the two modes, a current-based networked PI controller is proposed in islanded mode to achieve power sharing, as well as suppressing circulating current, and a power-based PI controller is designed in grid connected mode to supply required P and Q, as well as effectively synchronize f and v safely with the main grid. A microgrid test system with two operation modes was built in Matlab/Simulink. Several operating cases were executed to verity the feasibility and effectiveness of this optimal bumpless control strategy.
Ying Wu; Josep M. Guerrero; Juan C. Vasquez; Yanpeng Wu. Bumpless Optimal Control over Multi-Objective Microgrids with Mode-Dependent Controllers. Energies 2019, 12, 3619 .
AMA StyleYing Wu, Josep M. Guerrero, Juan C. Vasquez, Yanpeng Wu. Bumpless Optimal Control over Multi-Objective Microgrids with Mode-Dependent Controllers. Energies. 2019; 12 (19):3619.
Chicago/Turabian StyleYing Wu; Josep M. Guerrero; Juan C. Vasquez; Yanpeng Wu. 2019. "Bumpless Optimal Control over Multi-Objective Microgrids with Mode-Dependent Controllers." Energies 12, no. 19: 3619.