Distributed Voltage and Frequency Control of Islanded AC Microgrids

Ghazzali, Mohamed; Haloua, Mohamed

doi:10.1109/irsec.2018.8702969

Cited by 3 publications

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two main approaches were suggested for microgrids control: centralized and distributed control. Centralized control has been extensively used in literature for both AC and DC microgrids control [3][4][5][6][7][8][9][10][11][12][13] including secondary control [3][4][5] and power management [6][7][8] among others [9][10][11][12][13]. Distributed control is a modern control approach developed as a natural solution for the naturally distributed systems as a more reliable control strategy, since the control is geographically distributed along with the system.…”

Section: Introductionmentioning

confidence: 99%

Fixed-time observer-based distributed secondary voltage and frequency control of islanded AC microgrids

Ghazzali

Haloua

Giri

2020

IJECE

Self Cite

View full text Add to dashboard Cite

This paper deals with the problem of voltage and frequency control of distributed generators (DGs) in AC islanded microgrids. The main motivation of this work is to obviate the shortcomings of conventional centralized and distributed control of micro-grids by providing a better alternative control strategy with better control performance than state-of-the art approaches. A distributed secondary control protocol based on a novel fixed-time observer-based feedback control method is designed for fixed-time frequency and voltage reference tracking and disturbance rejection. Compared to the existing secondary microgrid controllers, the proposed control strategy ensures frequency and voltage reference tracking and disturbance rejection before the desired fixed-time despite the microgrid initial conditions, parameters uncertainties and the unknown disturbances. Also, the controllers design and tuning is simple, straightfor-ward and model-free.i.e, the knowledge of the microgrid parameters, topology, loads or transmission lines impedance are not needed in the design procedure. The use of distributed control approach enhances the reliability of the system by making the control system geographically distributed along with the power sources, by using the neighboring DGs informations instead of the DG’s local informations only and by cooperatively rejecting external disturbances and maintaining the frequency and the voltage at their reference values at any point of the microgrid. The efficiency of the proposed approach is verified by comparing its performance in reference tracking and its robustness to load power variations to some of the works in literature that addressed distributed secondary voltage and frequency control.

show abstract

Section: Introductionmentioning

confidence: 99%

Fixed-time observer-based distributed secondary voltage and frequency control of islanded AC microgrids

Ghazzali

Haloua

Giri

2020

IJECE

Self Cite

View full text Add to dashboard Cite

show abstract

A comprehensive review on control techniques for stability improvement in microgrids

Mehta

Basak

2021

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

In recent times, with the increase in the penetration of various renewable energy sources (RESs) into power systems, the complications related to the stability issues have increased. The main contribution of this paper is an in‐depth analysis of research in microgrid based on small‐signal, transient, and voltage stability. The small‐signal stability has been discussed based on uncertain load, limitation in power generation capacity, and nature of sluggish feedback observed in few microgrid systems. Instability caused by a transient phenomenon in microgrid has been thoroughly analyzed for losses in distributed energy resources (DERs), islanding and transition modes of operation, load shedding, and faults causing instability. The voltage fluctuations are duly considered in the perspective of load shedding, type of loads, power unbalancing, and different types of faults in microgrid systems. The existing controllers have been compared based on steady‐state error, response time, and robustness etc. The voltage, frequency, and active/reactive power control are analyzed based on centralized, decentralized, hierarchal/distributed control schemes aiming stabilization of microgrid systems. Finally, stability improvement features have been explored in detail, finding the implementation of microgrid stabilizers, energy storage devices, FACTS devices, load balancing, resource forecasting including the adaptive controller. Hence, the uniqueness of this paper can be considered as a state‐of‐the‐art review of the abovementioned stability components in the microgrid system which is not available in the published literature with a similar amount of vastness.

show abstract

Nonlinear Secondary Voltage Control of Islanded Microgrid via Distributed Consistency

Liu

Song

et al. 2020

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

Distributed Voltage and Frequency Control of Islanded AC Microgrids

Cited by 3 publications

References 11 publications

Fixed-time observer-based distributed secondary voltage and frequency control of islanded AC microgrids

Fixed-time observer-based distributed secondary voltage and frequency control of islanded AC microgrids

A comprehensive review on control techniques for stability improvement in microgrids

Nonlinear Secondary Voltage Control of Islanded Microgrid via Distributed Consistency

Contact Info

Product

Resources

About