Renewable energy emulation concepts for microgrids

Prieto‐Araujo, Eduardo; Olivella‐Rosell, Pol; Cheah-Mañé, Marc; Villafáfila‐Robles, Roberto; Gomis‐Bellmunt, Oriol

doi:10.1016/j.rser.2015.04.101

Cited by 27 publications

(18 citation statements)

References 74 publications

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“…This scale may represent the average daily level of the energy consumption, or the hourly power kW requirement for the household or rural village. From a rural African reference load profile perspective, one can correlate this requirement with government regulations, with IEA local load estimates, or alternatively to conduct a load synthesis analysis to determine the integrated scaled village load profile amplitudes (IEA, 2014, Prieto-Araujo et al, 2015.…”

Section: Rural African Village Electricity Use Profile Pattern: Scopingmentioning

confidence: 99%

Scoping exercise to determine load profile archetype reference shapes for solar co-generation models in isolated off-grid rural African villages

Prinsloo

2016

J. energy South. Afr.

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Section: Rural African Village Electricity Use Profile Pattern: Scopingmentioning

confidence: 99%

Scoping exercise to determine load profile archetype reference shapes for solar co-generation models in isolated off-grid rural African villages

Prinsloo

2016

J. energy South. Afr.

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“…The relationship between the SOC at instant t and the SOC at instant t − 1 is shown in Equation (26). The SOC is between 0 and 1 p.u.…”

Section: Constraintsmentioning

confidence: 99%

“…An emulated microgrid was used for the experiments. As described in [26], an emulator consists of a platform able to convert software processed variables into real magnitudes. Accordingly, real equipment can be tested by its interconnection to the emulator platform.…”

Section: Platform Descriptionmentioning

confidence: 99%

Optimal Operation of Isolated Microgrids Considering Frequency Constraints

et al. 2019

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Isolated microgrids must be able to perform autonomous operation without external grid support. This leads to a challenge when non-dispatchable generators are installed because power imbalances can produce frequency excursions compromising the system operation. This paper addresses the optimal operation of PV–battery–diesel-based microgrids taking into account the frequency constraints. Particularly, a new stochastic optimization method to maximize the PV generation while ensuring the grid frequency limits is proposed. The optimization problem was formulated including a minimum frequency constraint, which was obtained from a dynamic study considering maximum load and photovoltaic power variations. Once the optimization problem was formulated, three complete days were simulated to verify the proper behavior. Finally, the system was validated in a laboratory-scaled microgrid.

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“…In order to regulate the voltage and frequency of a microgrid, a fuzzy secondary controller, based on a virtual synchronous generator is proposed for an interfaced converter in [20]. By emulating synchronous machines for the power grid stability issues, the control of HVDC transmission in [21][22][23][24] were discussed so that the used rectifier emulates the features of a synchronous motor (SM), and the applied converter mimics an SG in its control structure.…”

Section: Introductionmentioning

confidence: 99%

Virtual Inertia and Mechanical Power-Based Control Strategy to Provide Stable Grid Operation under High Renewables Penetration

et al. 2019

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This paper presents a virtual inertia and mechanical power-based control strategy to provide a stable operation of the power grid under high penetration of renewable energy sources (RESs). The proposed control technique is based on a new active and reactive power-based dynamic model with the permanent magnet synchronous generator (PMSG) swing equation, in which all PMSG features i.e., inertia and mechanical power are embedded within the controller as the main contribution of this paper. To present an accurate analysis of the virtual PMSG-based parameters, the desired zero dynamics of the grid angular frequency are considered to evaluate the effects of virtual mechanical power (VMP) on the active and reactive power sharing, as well as the investigation of virtual inertia variations for the grid angular frequency responses. Moreover, by considering various active power errors and virtual inertia, the impacts of active power error on reactive power in the proposed control technique, are precisely assessed. Simulation results are employed in Matlab/Simulink software to verify the stabilizing abilities of the proposed control technique.

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Renewable energy emulation concepts for microgrids

Cited by 27 publications

References 74 publications

Scoping exercise to determine load profile archetype reference shapes for solar co-generation models in isolated off-grid rural African villages

Scoping exercise to determine load profile archetype reference shapes for solar co-generation models in isolated off-grid rural African villages

Optimal Operation of Isolated Microgrids Considering Frequency Constraints

Virtual Inertia and Mechanical Power-Based Control Strategy to Provide Stable Grid Operation under High Renewables Penetration

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