Circulating Current Control Strategy Based on Equivalent Feeder for Parallel Inverters in Islanded Microgrid

Zhang, Mingrui; Song, Baihui; Wang, Jiaying

doi:10.1109/tpwrs.2018.2867588

Cited by 56 publications

(30 citation statements)

References 28 publications

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“…The methods present in the literature can be roughly classified into two categories, viz., those involving novel control strategies [3]- [15] and those involving novel optimisation routines [16]- [21]. The control strategies can be further grouped into one of the following three approaches; either adjusting the Q−V droop coefficients (n q ) [5], [7] or the nominal voltages (V n ) [4], [6], [12] or the virtual impedances (Z v ) [8], [11], [14]. Many of these control strategies, such as those employing distributed secondary controllers can achieve accurate reactive power sharing [11]- [13], [15], [22].…”

Section: Introductionmentioning

confidence: 99%

Optimal DG Allocation and Volt–Var Dispatch for a Droop-Based Microgrid

Gupta

Doolla

Chatterjee

et al. 2021

IEEE Trans. Smart Grid

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Section: Introductionmentioning

confidence: 99%

Optimal DG Allocation and Volt–Var Dispatch for a Droop-Based Microgrid

Gupta

Doolla

Chatterjee

et al. 2021

IEEE Trans. Smart Grid

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“…When multiple distributed PV stations are equivalent to a cluster in the system, the power distribution is also affected. Therefore, the node voltage and power flow should be considered while simplifying the distributed PV stations (Zhang et al, 2019). The load transfer and line impedance equivalence are implied on every node.…”

Section: The Feeder Equivalencementioning

confidence: 99%

Data-Driven Hybrid Equivalent Dynamic Modeling of Multiple Photovoltaic Power Stations Based on Ensemble Gated Recurrent Unit

Long

et al. 2020

Front. Energy Res.

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With the increasing penetration of the photovoltaic (PV) in the distributed grid network, the dynamic response analysis of the system becomes more and more complex and costs lots of computational time in the simulation. To cut down the computational resources while guaranteeing the accuracy, this paper proposes a data-driven hybrid equivalent model for the dynamic response process of the multiple PV power stations. The data-driven hybrid equivalent model contains the simple equivalent model and datadriven error correction model. In the equivalent model, the distributed PV power stations in the same branch are equivalent to one power station model based on the parameter equivalence and feeder equivalence. The data-driven error correction model tracks and corrects the difference of dynamic response between the equivalent model and precise model. The ensemble Gated Recurrent Unit (GRU) model based on the bagging ensemble structure utilizes the simple equivalent dynamic response as input to learn the dynamic response errors. The simulation results validate the super-performance of the proposed model both in the response speed and accuracy.

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“…The proper power sharing in an islanded microgrid can be achieved by changing the parameters and equations of the droop method. The output voltage phase is employed instead of frequency reported in literature [22] to improve the power sharing accuracy and to effectively reduce the circulating current. Chen et al [23] proposed PV − droop control; where V represents the time rate of change of the output voltage reference.…”

Section: Introductionmentioning

confidence: 99%