Integrating battery banks to wind farms for frequency support provision–capacity sizing and support algorithms

Research output: Contribution to journalReview article

7 Citations (Scopus)

Abstract

The high penetration levels of wind power will obligate wind farms to contribute to the mitigation of frequency drops. Comprehensive case studies are presented to investigate the different methods of frequency support provision by wind power. The implemented test system is composed of an offshore wind farm connected to an external grid through a point-to-point HVDC link. Three different frequency support methods are compared; droop de-loading, battery storage banks and a mix between the two methods. Moreover, two different methods of sensing the frequency drop, at the point of common coupling, by the wind farm are examined. The impact of the HVDC is highlighted, especially its role to transmit the power surge provided by the wind farm. A modified de-loading controller is developed and integrated to all the wind turbines, according to the executed case studies. Results show that the proposed frequency support solutions have almost similar impact on the natural frequency response at the point of common coupling. The HVDC link does not worsen the frequency response, and the fluctuations in voltage levels at onshore and offshore buses are very minor. DIGsILENT PowerFactory is integrated as a simulation environment.

Original languageEnglish
JournalJournal of Renewable and Sustainable Energy
Volume7
Issue number5
DOIs
Publication statusPublished - 26 Oct 2015
Externally publishedYes

Fingerprint

Wind power
Frequency response
Offshore wind farms
Wind turbines
Natural frequencies
Controllers
Electric potential

Cite this

@article{4dfc53cb2f4b4b08b8ad8551ce250984,
title = "Integrating battery banks to wind farms for frequency support provision–capacity sizing and support algorithms",
abstract = "The high penetration levels of wind power will obligate wind farms to contribute to the mitigation of frequency drops. Comprehensive case studies are presented to investigate the different methods of frequency support provision by wind power. The implemented test system is composed of an offshore wind farm connected to an external grid through a point-to-point HVDC link. Three different frequency support methods are compared; droop de-loading, battery storage banks and a mix between the two methods. Moreover, two different methods of sensing the frequency drop, at the point of common coupling, by the wind farm are examined. The impact of the HVDC is highlighted, especially its role to transmit the power surge provided by the wind farm. A modified de-loading controller is developed and integrated to all the wind turbines, according to the executed case studies. Results show that the proposed frequency support solutions have almost similar impact on the natural frequency response at the point of common coupling. The HVDC link does not worsen the frequency response, and the fluctuations in voltage levels at onshore and offshore buses are very minor. DIGsILENT PowerFactory is integrated as a simulation environment.",
keywords = "Ancillary services, Energy storage, HVDC, Power systems, Wind power",
author = "Ayman Attya",
year = "2015",
month = "10",
day = "26",
doi = "10.1063/1.4934804",
language = "English",
volume = "7",
journal = "Journal of Renewable and Sustainable Energy",
issn = "1941-7012",
publisher = "American Institute of Physics Publising LLC",
number = "5",

}

TY - JOUR

T1 - Integrating battery banks to wind farms for frequency support provision–capacity sizing and support algorithms

AU - Attya, Ayman

PY - 2015/10/26

Y1 - 2015/10/26

N2 - The high penetration levels of wind power will obligate wind farms to contribute to the mitigation of frequency drops. Comprehensive case studies are presented to investigate the different methods of frequency support provision by wind power. The implemented test system is composed of an offshore wind farm connected to an external grid through a point-to-point HVDC link. Three different frequency support methods are compared; droop de-loading, battery storage banks and a mix between the two methods. Moreover, two different methods of sensing the frequency drop, at the point of common coupling, by the wind farm are examined. The impact of the HVDC is highlighted, especially its role to transmit the power surge provided by the wind farm. A modified de-loading controller is developed and integrated to all the wind turbines, according to the executed case studies. Results show that the proposed frequency support solutions have almost similar impact on the natural frequency response at the point of common coupling. The HVDC link does not worsen the frequency response, and the fluctuations in voltage levels at onshore and offshore buses are very minor. DIGsILENT PowerFactory is integrated as a simulation environment.

AB - The high penetration levels of wind power will obligate wind farms to contribute to the mitigation of frequency drops. Comprehensive case studies are presented to investigate the different methods of frequency support provision by wind power. The implemented test system is composed of an offshore wind farm connected to an external grid through a point-to-point HVDC link. Three different frequency support methods are compared; droop de-loading, battery storage banks and a mix between the two methods. Moreover, two different methods of sensing the frequency drop, at the point of common coupling, by the wind farm are examined. The impact of the HVDC is highlighted, especially its role to transmit the power surge provided by the wind farm. A modified de-loading controller is developed and integrated to all the wind turbines, according to the executed case studies. Results show that the proposed frequency support solutions have almost similar impact on the natural frequency response at the point of common coupling. The HVDC link does not worsen the frequency response, and the fluctuations in voltage levels at onshore and offshore buses are very minor. DIGsILENT PowerFactory is integrated as a simulation environment.

KW - Ancillary services

KW - Energy storage

KW - HVDC

KW - Power systems

KW - Wind power

UR - http://www.scopus.com/inward/record.url?scp=85008889068&partnerID=8YFLogxK

U2 - 10.1063/1.4934804

DO - 10.1063/1.4934804

M3 - Review article

VL - 7

JO - Journal of Renewable and Sustainable Energy

JF - Journal of Renewable and Sustainable Energy

SN - 1941-7012

IS - 5

ER -