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Distributed, fixed‐time, and bounded control for secondary voltage and frequency restoration in islanded microgrids
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Distributed, fixed‐time, and bounded control for secondary voltage and frequency restoration in islanded microgrids
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Journal Article
Distributed, fixed‐time, and bounded control for secondary voltage and frequency restoration in islanded microgrids
2019
Overview
Microgrid (MG) technology evolves as a promising solution to deal with the intermittent renewable generations and frequently changing load demand. This paper proposes a fully distributed and bounded secondary control algorithm with flexible convergence time for voltage and frequency restoration. It also enables accurate active power sharing for an islanded MG, compared with the well‐known consensus‐based distributed control approach. The proposed control scheme achieves accelerated fixed‐time convergence. The upper bound on the convergence is established by using the Lyapunov stability theory. The bounded, distributed control approach restores the voltage and frequency in fixed‐time while sharing the active power precisely. Further, the proposed controller is adaptive to the communication topology change and supports the plug and play feature of MG. Extensive simulations have been pursued using MATLAB/SimPowerSyetem toolbox considering frequent load perturbation and communication topology change. The obtained results are analysed to verify the performance of the proposed control algorithm. It is observed that the proposed bounded input controller converges faster than the conventional method.
Publisher
The Institution of Engineering and Technology,John Wiley & Sons, Inc,Wiley
Subject
/ B0260 Optimisation techniques
/ B8120J Distribution networks
/ B8120K Distributed power generation
/ C1310 Control system analysis and synthesis methods
/ C1320 Stability in control theory
/ C1340B Multivariable control systems
/ C1340E Self‐adjusting control systems
/ C3340H Control of electric power systems
/ communication topology change
/ Design
/ distributed control approach
/ distributed power generation
/ fully distributed bounded secondary control algorithm
/ intermittent renewable generations
/ Topology
/ Voltage
