Journal ArticleDOI
Hierarchical control of droop-controlled DC and AC microgrids — a general approach towards standardization
Josep M. Guerrero,Juan C. Vasquez,Jose Matas,L.G. de Vicuna,Miguel Castilla +4 more
- Vol. 58, Iss: 1, pp 158-172
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TLDR
The hierarchical control derived from ISA-95 and electrical dispatching standards to endow smartness and flexibility to MGs is presented and results are provided to show the feasibility of the proposed approach.Abstract:
DC and AC Microgrids are key elements to integrate renewable and distributed energy resources as well as distributed energy storage systems. In the last years, efforts toward the standardization of these Microgrids have been made. In this sense, this paper present the hierarchical control derived from ISA-95 and electrical dispatching standards to endow smartness and flexibility to microgrids. The hierarchical control proposed consist of three levels: i) the primary control is based on the droop method, including an output impedance virtual loop; ii) the secondary control allows restoring the deviations produced by the primary control; and iii) the tertiary control manage the power flow between the microgrid and the external electrical distribution system. Results from a hierarchical-controlled microgrid are provided to show the feasibility of the proposed approach.read more
Citations
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Journal ArticleDOI
Containment and Consensus-Based Distributed Coordination Control to Achieve Bounded Voltage and Precise Reactive Power Sharing in Islanded AC Microgrids
Renke Han,Lexuan Meng,Giancarlo Ferrari-Trecate,Ernane Antônio Alves Coelho,Juan C. Vasquez,Josep M. Guerrero +5 more
TL;DR: In this article, a distributed approach to achieve both bounded voltage and accurate reactive power sharing regulation in ac microgrid is presented, where a containment and consensus-based distributed coordination controller is proposed, by which the bus voltage magnitudes can be bounded within a reasonable range, instead of only controlling average voltage value.
Journal ArticleDOI
Distributed Consensus Based Supply–Demand Balance Algorithm for Economic Dispatch Problem in a Smart Grid With Switching Graph
Zhenquan Yang,Ji Xiang,Yanjun Li +2 more
TL;DR: A distributed consensus algorithm for economic dispatch in a smart grid, which aims at minimizing the total generation cost, which overcomes the defect that the trajectories of traditional consensus based algorithms are not feasible solutions before convergence.
Journal ArticleDOI
Voltage Stabilization in Microgrids via Quadratic Droop Control
TL;DR: This work proposes a novel droop-like inverter controller which is quadratic in the local voltage magnitude, and establishes the existence of a critical inductive load for the network, which depends only on the network topology, admittances, and controller gains.
Journal ArticleDOI
Artificial neural networks in microgrids: A review
TL;DR: Attention is brought to the promising applicability of artificial neural networks applied to the control of microgrid distributed generation sources, as well as in scheduling, power sharing, supervisory control and optimization.
Journal ArticleDOI
Voltage-Based Control of a Smart Transformer in a Microgrid
TL;DR: This paper addresses the issue of controlling the power transfer through the point of common coupling (PCC) by introducing the concept of a smart transformer (ST) at the PCC, which controls the active power exchange between a microgrid and the utility grid dependent on the state of both networks and other information communicated to the ST.
References
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Book
Power System Stability and Control
TL;DR: In this article, the authors present a model for the power system stability problem in modern power systems based on Synchronous Machine Theory and Modelling, and a model representation of the synchronous machine representation in stability studies.
Journal ArticleDOI
The path of the smart grid
TL;DR: The electrical power industry is undergoing rapid change as discussed by the authors, and the major drivers that will determine the speed at which such transformations will occur will be the rising cost of energy, the mass electrification of everyday life, and climate change.
Journal ArticleDOI
Defining control strategies for MicroGrids islanded operation
TL;DR: In this article, the feasibility of control strategies to be adopted for the operation of a microgrid when it becomes isolated is evaluated and the need of storage devices and load shedding strategies is evaluated.
Journal ArticleDOI
Control of parallel connected inverters in stand-alone AC supply systems
TL;DR: In this article, a control scheme for parallel-connected inverters in a standalone AC supply system is presented, which uses feedback of only those variables that can be measured locally at the inverter and does not need communication of control signals between the inverters.
Journal ArticleDOI
Output impedance design of parallel-connected UPS inverters with wireless load-sharing control
TL;DR: This paper deals with the design of the output impedance of uninterruptible power system (UPS) inverters with parallel-connection capability, and proposes novel control loops to achieve both stable output impedance and proper power balance.