Enhancing Frequency Stability of Weak Grids with Modified Distributed Virtual Inertia Method

Meysam Saeedian; Bahram Pournazarian; Bahman Eskandari; Mahdi  Shahparasti; Edris Pouresmaeil

doi:10.1109/PEDG48541.2020.9244475

Enhancing Frequency Stability of Weak Grids with Modified Distributed Virtual Inertia Method

Meysam Saeedian, Bahram Pournazarian, Bahman Eskandari, Mahdi Shahparasti, Edris Pouresmaeil^*

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

1 Citation (Scopus)

44 Downloads (Pure)

Abstract

In small–scale power systems, distributed virtual inertia (DVI)–based converters can effectively participate in primary frequency regulation. In this method, the synthetic inertia provision is fulfilled by discharging the preserved energy of dc–side capacitors employed in grid–interactive converters. Nevertheless, the eigenvalue analyses provided by small–signal state–space model of the converter reveal that the DVI function induces instability to the converter operating in weak grid connection. To address this issue aimed at improving grid frequency stability during frequency events, a new compensator is presented in this work. The compensator is designed so as eliminates the negative effect of DVI regulator on system stability. The effectiveness of proposed approach is illustrated by the time–domain simulations in MATLAB. The results show that the frequency rate of change following a frequency perturbation is enhanced by 40.38% compared with the scenario in which the synthetic inertia functionality is nullified.

Original language	English
Title of host publication	Proceedings of the 11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020
Publisher	IEEE
Pages	187-192
Number of pages	6
ISBN (Electronic)	978-1-7281-6990-3
DOIs	https://doi.org/10.1109/PEDG48541.2020.9244475
Publication status	Published - 2020
MoE publication type	A4 Article in a conference publication
Event	IEEE International Symposium on Power Electronics for Distributed Generation Systems - Virtual, Online Duration: 28 Sep 2020 → 1 Oct 2020 Conference number: 11

Publication series

Name	IEEE International Symposium on Power Electronics for Distributed Generation Systems
Publisher	IEEE
ISSN (Print)	2329-5759
ISSN (Electronic)	2329-5767

Conference

Conference	IEEE International Symposium on Power Electronics for Distributed Generation Systems
Abbreviated title	PEDG
City	Virtual, Online
Period	28/09/2020 → 01/10/2020
Other	Virtual conference

Keywords

Grid - following voltage source converter
VSC
Synthetic inertia
Frequency regulation
renewable energy source
RES

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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ELEC_Saeedian_etal_Enhancing-Frequency-Stability_PEDG2020_acceptedauthormanuscriptAccepted author manuscript, 3.28 MB

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Saeedian, M., Pournazarian, B., Eskandari, B., Shahparasti, M., & Pouresmaeil, E. (2020). Enhancing Frequency Stability of Weak Grids with Modified Distributed Virtual Inertia Method. In Proceedings of the 11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020 (pp. 187-192). [9244475] (IEEE International Symposium on Power Electronics for Distributed Generation Systems). IEEE. https://doi.org/10.1109/PEDG48541.2020.9244475

Saeedian, Meysam ; Pournazarian, Bahram ; Eskandari, Bahman et al. / Enhancing Frequency Stability of Weak Grids with Modified Distributed Virtual Inertia Method. Proceedings of the 11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020. IEEE, 2020. pp. 187-192 (IEEE International Symposium on Power Electronics for Distributed Generation Systems).

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title = "Enhancing Frequency Stability of Weak Grids with Modified Distributed Virtual Inertia Method",

abstract = "In small–scale power systems, distributed virtual inertia (DVI)–based converters can effectively participate in primary frequency regulation. In this method, the synthetic inertia provision is fulfilled by discharging the preserved energy of dc–side capacitors employed in grid–interactive converters. Nevertheless, the eigenvalue analyses provided by small–signal state–space model of the converter reveal that the DVI function induces instability to the converter operating in weak grid connection. To address this issue aimed at improving grid frequency stability during frequency events, a new compensator is presented in this work. The compensator is designed so as eliminates the negative effect of DVI regulator on system stability. The effectiveness of proposed approach is illustrated by the time–domain simulations in MATLAB. The results show that the frequency rate of change following a frequency perturbation is enhanced by 40.38% compared with the scenario in which the synthetic inertia functionality is nullified.",

keywords = "Grid - following voltage source converter, VSC, Synthetic inertia, Frequency regulation, renewable energy source, RES",

author = "Meysam Saeedian and Bahram Pournazarian and Bahman Eskandari and Mahdi Shahparasti and Edris Pouresmaeil",

year = "2020",

doi = "10.1109/PEDG48541.2020.9244475",

language = "English",

series = "IEEE International Symposium on Power Electronics for Distributed Generation Systems",

publisher = "IEEE",

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booktitle = "Proceedings of the 11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020",

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Saeedian, M, Pournazarian, B, Eskandari, B, Shahparasti, M & Pouresmaeil, E 2020, Enhancing Frequency Stability of Weak Grids with Modified Distributed Virtual Inertia Method. in Proceedings of the 11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020., 9244475, IEEE International Symposium on Power Electronics for Distributed Generation Systems, IEEE, pp. 187-192, IEEE International Symposium on Power Electronics for Distributed Generation Systems, Virtual, Online, 28/09/2020. https://doi.org/10.1109/PEDG48541.2020.9244475

Enhancing Frequency Stability of Weak Grids with Modified Distributed Virtual Inertia Method. / Saeedian, Meysam; Pournazarian, Bahram; Eskandari, Bahman et al.

Proceedings of the 11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020. IEEE, 2020. p. 187-192 9244475 (IEEE International Symposium on Power Electronics for Distributed Generation Systems).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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T1 - Enhancing Frequency Stability of Weak Grids with Modified Distributed Virtual Inertia Method

AU - Saeedian, Meysam

AU - Pournazarian, Bahram

AU - Eskandari, Bahman

AU - Shahparasti, Mahdi

AU - Pouresmaeil, Edris

N1 - Conference code: 11

PY - 2020

Y1 - 2020

N2 - In small–scale power systems, distributed virtual inertia (DVI)–based converters can effectively participate in primary frequency regulation. In this method, the synthetic inertia provision is fulfilled by discharging the preserved energy of dc–side capacitors employed in grid–interactive converters. Nevertheless, the eigenvalue analyses provided by small–signal state–space model of the converter reveal that the DVI function induces instability to the converter operating in weak grid connection. To address this issue aimed at improving grid frequency stability during frequency events, a new compensator is presented in this work. The compensator is designed so as eliminates the negative effect of DVI regulator on system stability. The effectiveness of proposed approach is illustrated by the time–domain simulations in MATLAB. The results show that the frequency rate of change following a frequency perturbation is enhanced by 40.38% compared with the scenario in which the synthetic inertia functionality is nullified.

AB - In small–scale power systems, distributed virtual inertia (DVI)–based converters can effectively participate in primary frequency regulation. In this method, the synthetic inertia provision is fulfilled by discharging the preserved energy of dc–side capacitors employed in grid–interactive converters. Nevertheless, the eigenvalue analyses provided by small–signal state–space model of the converter reveal that the DVI function induces instability to the converter operating in weak grid connection. To address this issue aimed at improving grid frequency stability during frequency events, a new compensator is presented in this work. The compensator is designed so as eliminates the negative effect of DVI regulator on system stability. The effectiveness of proposed approach is illustrated by the time–domain simulations in MATLAB. The results show that the frequency rate of change following a frequency perturbation is enhanced by 40.38% compared with the scenario in which the synthetic inertia functionality is nullified.

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BT - Proceedings of the 11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020

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Saeedian M, Pournazarian B, Eskandari B, Shahparasti M, Pouresmaeil E. Enhancing Frequency Stability of Weak Grids with Modified Distributed Virtual Inertia Method. In Proceedings of the 11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020. IEEE. 2020. p. 187-192. 9244475. (IEEE International Symposium on Power Electronics for Distributed Generation Systems). doi: 10.1109/PEDG48541.2020.9244475

Enhancing Frequency Stability of Weak Grids with Modified Distributed Virtual Inertia Method

Abstract

Publication series

Conference

Keywords

UN SDGs

Access to Document

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