Distributed Voltage Unbalance Compensation in Islanded Microgrids by Using a Dynamic Consensus Algorithm

Meng, Lexuan; Zhao, Xin; Tang, Fen; Savaghebi, Mehdi; Dragičević, Tomislav; Vasquez, Juan C.; Guerrero, Josep M.

doi:10.1109/tpel.2015.2408367

Cited by 179 publications

(140 citation statements)

References 37 publications

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“…In the secondary control, a state observer is constructed with the distributed consensus algorithm [13] [19], which are used to obtain global average value. Figure 4 …”

Section: Figure 4 State Observer and Compensation Valuementioning

confidence: 99%

Networked Hierarchical Control Strategy for Voltage and Frequency in an Islanded Microgrid Considering Time Delay

Wu¹,

Lei²,

Hao³

2017

IJCA

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“…In the secondary control, a state observer is constructed with the distributed consensus algorithm [13] [19], which are used to obtain global average value. Figure 4 …”

Section: Figure 4 State Observer and Compensation Valuementioning

confidence: 99%

Networked Hierarchical Control Strategy for Voltage and Frequency in an Islanded Microgrid Considering Time Delay

Wu¹,

Lei²,

Hao³

2017

IJCA

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“…In this paper, a modified version [13][14] of the above mentioned algorithm, namely dynamic consensus algorithm, is applied to obtain a convergence in environment with dynamically changing variables. This algorithm can be expressed as:…”

Section: Dynamic Consensus Algorithmmentioning

confidence: 99%

Distributed low voltage ride-through operation of power converters in grid-connected microgrids under voltage sags

Zhao

Meng

Dragičević

et al. 2015

IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society

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Abstract-With the increasing penetration of renewable energy, microgrids (MGs) have gained a great attention over the past decade. However, a sudden cut out of the MGs due to grid fault may lead to adverse effects to the grid. As a consequence, reactive power injection provided by MGs is preferred since it can make the MG a contributor in smooth ride through the faults. In this paper, a reactive power support strategy using droop controlled converters is proposed to aid MG riding through three phase symmetrical voltage sags. In such a case, the MGs should inject reactive power to the grid to boost the voltage in all phases at AC common bus. However, since the line admittances from each converter to point of common coupling (PCC) are not identical, the injected reactive power may not be equally shared. In order to achieve low voltage ride through (LVRT) capability along with a good power sharing accuracy, a hierarchical control strategy is proposed in this paper. Droop control and virtual impedance is applied in primary control loop while secondary control loop is based on dynamic consensus algorithm (DCA). Experiments are conducted to verify the effectiveness of the proposed control strategy.

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“…The operation of three-phase two-level converter in unbalanced condition is researched in [7]. However, the operation of three-level rectifier has not been paid attention.…”

Section: Introductionmentioning

confidence: 99%

Control the Three-level Rectifier Under Unbalanced Grid Conditions

Zhao¹

2018

dteees

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Abstract. This paper proposes a novel control method for Three-level rectifier under unbalanced grid conditions. An average model is established to analyze the influence of the unbalanced factor. It can be seen that the unbalanced factor will generate the negative-sequence current. The negative-sequence current can be suppressed by a proportional integral resonant (PIR) controller. Additionally, the unbalance of neutral-point (NP) voltage will generate in the three-level rectifier. Therefore, this paper proposes a space vector modulation for balancing the NP voltage. The simulation results confirm the performance and effectiveness.

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Distributed Voltage Unbalance Compensation in Islanded Microgrids by Using a Dynamic Consensus Algorithm

Cited by 179 publications

References 37 publications

Networked Hierarchical Control Strategy for Voltage and Frequency in an Islanded Microgrid Considering Time Delay

Networked Hierarchical Control Strategy for Voltage and Frequency in an Islanded Microgrid Considering Time Delay

Distributed low voltage ride-through operation of power converters in grid-connected microgrids under voltage sags

Control the Three-level Rectifier Under Unbalanced Grid Conditions

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