# Estimation-based Consensus Approach for Decentralized Frequency Control of AC Microgrids

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

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

### Abstract

In this paper, a decentralized frequency control of ac microgrid (MG) governed by $P-\omega$ droop characteristics is presented. This approach is realized by applying an active power estimation to eliminate the required communication infrastructure in the secondary control layer. The proposed decentralized frequency control is achieved by employing the unique feature of the frequency as a global variable in autonomous ac MGs. By utilizing a consensus protocol, the proposed method restores the MG frequency to the nominal value while maintaining accurate power sharing of the droop mechanism. The consensus protocol is an estimation-based approach and does not require communication infrastructure. Experimental results verified accurate power-sharing and the frequency restoration to the nominal value without any communication requirement.
Original language English Proceedings of 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe) 6 Italy IEEE Press Sep 2019 978-1-7281-2361-5 978-9-0758-1531-3 https://doi.org/10.23919/EPE.2019.8914758 Published - Sep 2019 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe) - Genova, ItalyDuration: 3 Sep 2019 → 5 Sep 2019

### Conference

Conference 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe) Italy Genova 03/09/2019 → 05/09/2019

Communication
Restoration

### Keywords

• Microgrids
• Secondary frequency control
• Decentralized control
• Communication-free secondary control
• Consensus protocol

### Cite this

Khayat, Y., Heydari, R., Naderi, M., Dragicevic, T., Shafiee, Q., Fathi, M., ... Blaabjerg, F. (2019). Estimation-based Consensus Approach for Decentralized Frequency Control of AC Microgrids. In Proceedings of 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe) Italy: IEEE Press. https://doi.org/10.23919/EPE.2019.8914758
Khayat, Yousef ; Heydari, Rasool ; Naderi, Mobin ; Dragicevic, Tomislav ; Shafiee, Qobad ; Fathi, Mohammad ; Bevrani , Hassan ; Blaabjerg, Frede. / Estimation-based Consensus Approach for Decentralized Frequency Control of AC Microgrids. Proceedings of 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe). Italy : IEEE Press, 2019.
@inproceedings{11abca852c924c92b4999a77464d9463,
title = "Estimation-based Consensus Approach for Decentralized Frequency Control of AC Microgrids",
abstract = "In this paper, a decentralized frequency control of ac microgrid (MG) governed by $P-\omega$ droop characteristics is presented. This approach is realized by applying an active power estimation to eliminate the required communication infrastructure in the secondary control layer. The proposed decentralized frequency control is achieved by employing the unique feature of the frequency as a global variable in autonomous ac MGs. By utilizing a consensus protocol, the proposed method restores the MG frequency to the nominal value while maintaining accurate power sharing of the droop mechanism. The consensus protocol is an estimation-based approach and does not require communication infrastructure. Experimental results verified accurate power-sharing and the frequency restoration to the nominal value without any communication requirement.",
keywords = "Microgrids, Secondary frequency control, Decentralized control, Communication-free secondary control, Consensus protocol",
author = "Yousef Khayat and Rasool Heydari and Mobin Naderi and Tomislav Dragicevic and Qobad Shafiee and Mohammad Fathi and Hassan Bevrani and Frede Blaabjerg",
year = "2019",
month = "9",
doi = "10.23919/EPE.2019.8914758",
language = "English",
isbn = "978-1-7281-2361-5",
booktitle = "Proceedings of 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe)",
publisher = "IEEE Press",

}

Khayat, Y, Heydari, R, Naderi, M, Dragicevic, T, Shafiee, Q, Fathi, M, Bevrani , H & Blaabjerg, F 2019, Estimation-based Consensus Approach for Decentralized Frequency Control of AC Microgrids. in Proceedings of 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe). IEEE Press, Italy, 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe), Genova, Italy, 03/09/2019. https://doi.org/10.23919/EPE.2019.8914758

Estimation-based Consensus Approach for Decentralized Frequency Control of AC Microgrids. / Khayat, Yousef; Heydari, Rasool; Naderi, Mobin; Dragicevic, Tomislav; Shafiee, Qobad; Fathi, Mohammad; Bevrani , Hassan ; Blaabjerg, Frede.

Proceedings of 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe). Italy : IEEE Press, 2019.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

TY - GEN

T1 - Estimation-based Consensus Approach for Decentralized Frequency Control of AC Microgrids

AU - Khayat, Yousef

AU - Heydari, Rasool

AU - Dragicevic, Tomislav

AU - Bevrani , Hassan

AU - Blaabjerg, Frede

PY - 2019/9

Y1 - 2019/9

N2 - In this paper, a decentralized frequency control of ac microgrid (MG) governed by $P-\omega$ droop characteristics is presented. This approach is realized by applying an active power estimation to eliminate the required communication infrastructure in the secondary control layer. The proposed decentralized frequency control is achieved by employing the unique feature of the frequency as a global variable in autonomous ac MGs. By utilizing a consensus protocol, the proposed method restores the MG frequency to the nominal value while maintaining accurate power sharing of the droop mechanism. The consensus protocol is an estimation-based approach and does not require communication infrastructure. Experimental results verified accurate power-sharing and the frequency restoration to the nominal value without any communication requirement.

AB - In this paper, a decentralized frequency control of ac microgrid (MG) governed by $P-\omega$ droop characteristics is presented. This approach is realized by applying an active power estimation to eliminate the required communication infrastructure in the secondary control layer. The proposed decentralized frequency control is achieved by employing the unique feature of the frequency as a global variable in autonomous ac MGs. By utilizing a consensus protocol, the proposed method restores the MG frequency to the nominal value while maintaining accurate power sharing of the droop mechanism. The consensus protocol is an estimation-based approach and does not require communication infrastructure. Experimental results verified accurate power-sharing and the frequency restoration to the nominal value without any communication requirement.

KW - Microgrids

KW - Secondary frequency control

KW - Decentralized control

KW - Communication-free secondary control

KW - Consensus protocol

U2 - 10.23919/EPE.2019.8914758

DO - 10.23919/EPE.2019.8914758

M3 - Article in proceeding

SN - 978-1-7281-2361-5

BT - Proceedings of 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe)

PB - IEEE Press

CY - Italy

ER -

Khayat Y, Heydari R, Naderi M, Dragicevic T, Shafiee Q, Fathi M et al. Estimation-based Consensus Approach for Decentralized Frequency Control of AC Microgrids. In Proceedings of 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe). Italy: IEEE Press. 2019 https://doi.org/10.23919/EPE.2019.8914758