Decentralized Frequency Control of AC Microgrids: an Estimation-Based Consensus Approach

Yousef Khayat; Rasool Heydari; Mobin Naderi; Tomislav Dragicevic; Qobad Shafiee; Mohammad Fathi; Hassan  Bevrani; Frede Blaabjerg

doi:10.1109/JESTPE.2020.2980675

Decentralized Frequency Control of AC Microgrids: an Estimation-Based Consensus Approach

Yousef Khayat, Rasool Heydari, Mobin Naderi, Tomislav Dragicevic, Qobad Shafiee, Mohammad Fathi, Hassan Bevrani , Frede Blaabjerg

Research output: Contribution to journal › Journal article › Research › peer-review

16 Citations (Scopus)

Abstract

In this article, a decentralized secondary control (SC) based on the active power estimation (APE) is presented. This achievement is realized by employing the unique feature of frequency as a global variable in autonomous ac microgrids (MGs). The APE is merely based on the droop coefficient of P-ω characteristics. The decentralized SC, utilizing a consensus protocol, restores the MG frequency to the nominal value while maintaining accurate power sharing of the droop mechanism. The consensus protocol is estimation-based and does not require communication infrastructure. In addition to the proposition of stability analysis method, experimental results with four distributed generation units (DGUs) also verify the effectiveness of the proposed SC structure.

Original language	English
Journal	I E E E Journal of Emerging and Selected Topics in Power Electronics
Volume	9
Issue number	5
Pages (from-to)	5183-5191
Number of pages	9
ISSN	2168-6777
DOIs	https://doi.org/10.1109/JESTPE.2020.2980675
Publication status	Published - Oct 2021

Keywords

Active power estimation (APE)
Communication free control
Consensus protocol
Frequency regulation
Microgrid (MG)
Secondary control (SC)

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10.1109/JESTPE.2020.2980675

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title = "Decentralized Frequency Control of AC Microgrids: an Estimation-Based Consensus Approach",

abstract = "In this article, a decentralized secondary control (SC) based on the active power estimation (APE) is presented. This achievement is realized by employing the unique feature of frequency as a global variable in autonomous ac microgrids (MGs). The APE is merely based on the droop coefficient of P-ω characteristics. The decentralized SC, utilizing a consensus protocol, restores the MG frequency to the nominal value while maintaining accurate power sharing of the droop mechanism. The consensus protocol is estimation-based and does not require communication infrastructure. In addition to the proposition of stability analysis method, experimental results with four distributed generation units (DGUs) also verify the effectiveness of the proposed SC structure.",

keywords = "Active power estimation (APE), Communication free control, Consensus protocol, Frequency regulation, Microgrid (MG), Secondary control (SC)",

author = "Yousef Khayat and Rasool Heydari and Mobin Naderi and Tomislav Dragicevic and Qobad Shafiee and Mohammad Fathi and Hassan Bevrani and Frede Blaabjerg",

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language = "English",

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T1 - Decentralized Frequency Control of AC Microgrids

T2 - an Estimation-Based Consensus Approach

AU - Khayat, Yousef

AU - Heydari, Rasool

AU - Naderi, Mobin

AU - Dragicevic, Tomislav

AU - Shafiee, Qobad

AU - Fathi, Mohammad

AU - Bevrani , Hassan

AU - Blaabjerg, Frede

PY - 2021/10

Y1 - 2021/10

N2 - In this article, a decentralized secondary control (SC) based on the active power estimation (APE) is presented. This achievement is realized by employing the unique feature of frequency as a global variable in autonomous ac microgrids (MGs). The APE is merely based on the droop coefficient of P-ω characteristics. The decentralized SC, utilizing a consensus protocol, restores the MG frequency to the nominal value while maintaining accurate power sharing of the droop mechanism. The consensus protocol is estimation-based and does not require communication infrastructure. In addition to the proposition of stability analysis method, experimental results with four distributed generation units (DGUs) also verify the effectiveness of the proposed SC structure.

AB - In this article, a decentralized secondary control (SC) based on the active power estimation (APE) is presented. This achievement is realized by employing the unique feature of frequency as a global variable in autonomous ac microgrids (MGs). The APE is merely based on the droop coefficient of P-ω characteristics. The decentralized SC, utilizing a consensus protocol, restores the MG frequency to the nominal value while maintaining accurate power sharing of the droop mechanism. The consensus protocol is estimation-based and does not require communication infrastructure. In addition to the proposition of stability analysis method, experimental results with four distributed generation units (DGUs) also verify the effectiveness of the proposed SC structure.

KW - Active power estimation (APE)

KW - Communication free control

KW - Consensus protocol

KW - Frequency regulation

KW - Microgrid (MG)

KW - Secondary control (SC)

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DO - 10.1109/JESTPE.2020.2980675

M3 - Journal article

SN - 2168-6777

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SP - 5183

EP - 5191

JO - I E E E Journal of Emerging and Selected Topics in Power Electronics

JF - I E E E Journal of Emerging and Selected Topics in Power Electronics

IS - 5

ER -

Decentralized Frequency Control of AC Microgrids: an Estimation-Based Consensus Approach

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Keywords

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