Analysis and Optimization of Droop Controller for Microgrid System Based on Small-Signal Dynamic Model

Yu, Kai; Ai, Qian; Wang, Shiyi; Ni, Jianmo; Lv, Tianguang

doi:10.1109/tsg.2015.2501316

Cited by 187 publications

(145 citation statements)

References 22 publications

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“…Although the microgrid stabilities with linear loads are extensively studied over the past period [95,[130][131][132], the determination of stability margins for DG units and synchronous generators with non-linear loads, such as induction motors, constant power loads and electrical vehicles are not studied thoroughly.…”

Section: Future Workmentioning

confidence: 99%

Overview of AC Microgrid Controls with Inverter-Interfaced Generations

et al. 2017

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Distributed generation (DG) is one of the key components of the emerging microgrid concept that enables renewable energy integration in a distribution network. In DG unit operation, inverters play a vital role in interfacing energy sources with the grid utility. An effective interfacing can successfully be accomplished by operating inverters with effective control techniques. This paper reviews and categorises different control methods (voltage and primary) for improving microgrid power quality, stability and power sharing approaches. In addition, the specific characteristics of microgrids are summarised to distinguish from distribution network control. Moreover, various control approaches including inner-loop controls and primary controls are compared according to their relative advantages and disadvantages. Finally, future research trends for microgrid control are discussed pointing out the research opportunities. This review paper will be a good basis for researchers working in microgrids and for industry to implement the ongoing research improvement in real systems.

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Section: Future Workmentioning

confidence: 99%

Overview of AC Microgrid Controls with Inverter-Interfaced Generations

et al. 2017

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“…Small signal model for voltage control are given as in Equations (19)- (22), obtained by perturbing respective dynamical equations around quiescent point at which stability analysis is required [37,38].…”

Section: Zero Level Converter Control Modelmentioning

confidence: 99%

A Virtual Micro-Islanding-Based Control Paradigm for Renewable Microgrids

et al. 2018

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Improvements in control of renewable energy-based microgrids are a growing area of interest. A hierarchical control structure is popularly implemented to regulate key parameters such as power sharing between generation sources, system frequency and node voltages. A distributed control infrastructure is realized by means of a communication network that spans the micro-distribution grid. Measured and estimated values, as well as corrective signals are transmitted across this network to effect required system regulation. However, intermittent latencies and failures of component communication links may result in power imbalances between generation sources, deviations in node voltages and system frequency. This paper proposes a hierarchical control structure to regulate the operation of an islanded AC microgrid experiencing communication link failures. The proposed strategy aims to virtually sub-divide the microgrid into controllable "islands". Thereafter, active power sharing, frequency and voltage restoration is achieved by competing converter systems through multi-agent consensus. The effectiveness of the proposed methodology has been verified through stability analyses using system wide mathematical small signal models and case study simulations in MATLAB, Simpower systems.

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“…In [68], optimization based on genetic algorithm (GA) was proposed to improve the stability and easily switching the operation of different modes in a microgrid. The dynamic performance of optimization objective function can be obtained as…”

Section: Optimization Techniques In Microgridmentioning

confidence: 99%

A Review on Impacts of Power Quality, Control and Optimization Strategies of Integration of Renewable Energy Based Microgrid Operation

Praiselin¹,

Edward²

2018

IJISA

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Abstract-Due to the global demand for energy saving and reduction of greenhouse gas emissions, utilization of renewable energy sources have increased in electricity networks. The negative aspects of this technology are very complex and not well known which affect reliability and robustness of the grids. Microgrids based on renewable energy sources have gained significant popularity, due to the major benefits it has to offer for solving the increasing energy demand. Harmonic distortion in microgrids caused by the non-linear loads is an essential topic of study necessary for the better understanding of power quality impacts in microgrids. The various control techniques utilized to curtail the power quality impacts on micro grids are reviewed in this paper. Also, Optimization based control techniques utilized for power quality improvement in microgrids is discussed in this review.

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Analysis and Optimization of Droop Controller for Microgrid System Based on Small-Signal Dynamic Model

Cited by 187 publications

References 22 publications

Overview of AC Microgrid Controls with Inverter-Interfaced Generations

Overview of AC Microgrid Controls with Inverter-Interfaced Generations

A Virtual Micro-Islanding-Based Control Paradigm for Renewable Microgrids

A Review on Impacts of Power Quality, Control and Optimization Strategies of Integration of Renewable Energy Based Microgrid Operation

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