Decentralized Control for Parallel Operation of Distributed Generation Inverters in Microgrids Using Resistive Output Impedance

Guerrero, Josep M.; Berbel, Néstor; Matas, J.; Vicuña, Luis García de; Miret, Jaume

doi:10.1109/iecon.2006.347859

Cited by 67 publications

(47 citation statements)

References 21 publications

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“…Un esquema general para el control por pendiente P-f se muestra a continuación: Los coeficientes del control por pendiente y los filtros determinan la dinámica y estabilidad del inversor [14]. Si el valor de se incrementa, se logra el reparto de potencia (power sharing), pero la regulación se degrada [13].…”

Section: Figura 2 Control Por Pendiente P-funclassified

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Mejoras de la Regulación de Frecuencia Utilizando el Aumento de Inercia de Microrredes Interconectadas

Tovar

Nava

Rivera

2017

revuin

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Este artículo puede compartirse bajo la licencia CC BY-ND 4.0 y debe referenciarse usando el siguiente formato: V. Toro, S. Rivera, E. MojicaNava, "Mejoras de la regulación de frecuencia utilizando el aumento de inercia de microrredes interconectadas", UIS Ingenierías, vol. 16, no. RESUMENEl control por pendiente garantiza la regulación de frecuencia y el reparto de potencia activa entre los inversores de una microrred aislada, sin embargo, introduce desviaciones respecto a la frecuencia de referencia. Cuando un generador adicional basado en inversores se conecta a una microrred, se reduce la desviación en frecuencia y se aumenta la capacidad de potencia de todo el sistema; de igual modo, la interconexión entre microrredes en modo isla tiene el mismo efecto. El control por pendiente ha mostrado ser efectivo en microrredes basadas en inversores, sin embargo, cuando uno o más generadores sincrónicos se conectan directamente a la microrred, cambian las condiciones de dicho control. Para analizar que ocurre cuando se interconectan microrredes en modo isla se analizan los casos cuando ambas microrredes constan únicamente de inversores, y cuando una microrred o ambas tienen al menos un generador sincrónico. De esta manera, los resultados de simulación presentados demuestran las mejoras de la regulación de frecuencia utilizando el aumento de inercia de microrredes interconectadas.PALABRAS CLAVE: Microrred, Control por pendiente, Frecuencia, Interconexión, Generador sincrónico, Regulación. ABSTRACTDroop control guarantees frequency regulation and power sharing among the inverters in an isdated microgrid, however, frequency deviations are introduced with respect to reference values. When an aditional distributed generator based on inverters is connected to the microgrid, such deviations are reduced and the power capacity of the system is improved; same way happens when microgrids are interconnected. Droop control has shown to be effective in inverter based microgrids, however, when one or more synchronous generators are directly connected to the microgrid the conditions of the controller change. To analaize what happen when islanded microgrids are interconected different cases are considered: first when both microgrid are based only in inverters, and other case in which one microgrid has at least one synchronous generator. In this way, the simulation results show the regulation frequency improvements using the inertia increase of networked microgrids.

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Section: Figura 2 Control Por Pendiente P-funclassified

“…La acción del control por pendiente está limitada por la máxima desviación en frecuencia y voltaje. Los coeficientes del control por pendiente y pueden ser escogidos según ( [14]). …”

Section: Figura 2 Control Por Pendiente P-funclassified

Mejoras de la Regulación de Frecuencia Utilizando el Aumento de Inercia de Microrredes Interconectadas

Tovar

Nava

Rivera

2017

revuin

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“…It employs an internal model voltage controller to reduce voltage disturbances but the stability of the DC link voltage is not addressed. A design of virtual inductance and resistance is presented in [8] and [9] to reduce the inrush current during mode transitions. Local phase locked loop (PLL) and virtual inductor [10], frequency/phase synchronization method [11], adaptive droop coefficients control [12], and master/slave communicationbased control strategy [13], [14] are all proposed for smooth mode transition.…”

Section: Introductionmentioning

confidence: 99%

Control Strategy for Uninterrupted Microgrid Mode Transfer During Unintentional Islanding Scenarios

Issa

Khateb

Abusara

et al. 2018

IEEE Trans. Ind. Electron.

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Abstract-This paper presents a microgrid control strategy to unify the control topology for energy storage systems (ESS) and renewable energy sources (RES) inverters in an AC microgrid and to protect the microgrid reliability from unintentional islanding instability using control loops which use the DC link voltage as a feedback. This bounds the DC link voltage and provides reliable operation in the microgrid. Simulation validates the proposed control strategy, and experiment results extol the concept.

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“…The inversion of droop control is categorized as the third type [19,20]. Traditional droop control contains an active power channel (P-f ) and a reactive power channel (Q-V), which exists strong coupling between the power outputs in the microgrid.…”

Section: Introductionmentioning

confidence: 99%

Power Decoupling Method Based on the Diagonal Compensating Matrix for VSG-Controlled Parallel Inverters in the Microgrid

Zhou

2017

Energies

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Abstract:The thought of the virtual synchronous generator (VSG) for controlling the grid-connected inverters and providing virtual inertia to the microgrid is emerging as a wide extension of the droop control, power coupling that always exists in the low-voltage microgrid, which may deteriorate the dynamic response and the stability of the system. In this paper, the principle of VSG control is introduced first. As an important issue of VSG control, the mechanism of the power coupling in the low-voltage microgrid is analyzed and the small-signal equivalent model of the power transmission loop is established. Subsequently, a power decoupling method based on the diagonal compensating matrix for VSG is proposed, which can realize the power decoupling with no impact on the original control channel. Meanwhile, the feasibility analysis of the decoupling method and the improved approach for reactive power sharing are also discussed. Simulation results verify the effectiveness of the decoupling strategy for VSGs.

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Decentralized Control for Parallel Operation of Distributed Generation Inverters in Microgrids Using Resistive Output Impedance

Cited by 67 publications

References 21 publications

Mejoras de la Regulación de Frecuencia Utilizando el Aumento de Inercia de Microrredes Interconectadas

Mejoras de la Regulación de Frecuencia Utilizando el Aumento de Inercia de Microrredes Interconectadas

Control Strategy for Uninterrupted Microgrid Mode Transfer During Unintentional Islanding Scenarios

Power Decoupling Method Based on the Diagonal Compensating Matrix for VSG-Controlled Parallel Inverters in the Microgrid

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