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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Selective Compensation of Voltage Harmonics in a Grid-Connected Microgrid
TL;DR: In this article, a novel approach is proposed for selective compensation of main voltage harmonics in a grid-connected microgrid, where the compensation effort of each harmonic is shared considering the respective current harmonic supplied by the DGs.
Journal ArticleDOI
An adaptive droop-based control strategy for fuel cell-battery hybrid energy storage system to support primary frequency in stand-alone microgrids
TL;DR: Simulation results indicate that the proposed dynamic droop-based control strategy leads to a proper power sharing between FC and battery, forming a complementary hybrid energy storage system which has better primary frequency support than the battery in SAMGs.
Journal ArticleDOI
Power decoupling strategy based on ‘virtual negative resistor’ for inverters in low-voltage microgrids
TL;DR: In this paper, a virtual impedance composed of virtual negative resistor (VNR) and virtual inductor is employed to control the interfaced inverters in a lowvoltage microgrid.
Journal ArticleDOI
Distributed Secondary Control for Current Sharing and Voltage Restoration in DC Microgrid
TL;DR: A new distributed secondary control scheme is presented in this paper for both current sharing and voltage restoration in DC microgrid, with a key part of the presented scheme the integration of a new parameter ‘virtual voltage drop’ defined from droop gain and line resistance.
Journal ArticleDOI
Hierarchical Predictive Control of Microgrids in Islanded Operation
TL;DR: A hierarchical control architecture for the regulation of frequency and nodal voltages of a microgrid in islanded operation and the proposed algorithm, based on model predictive control, introduces the possibility to define different resource management strategies while taking into account the constraints of the available devices.
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.