Modelling, Analysis and Control of DC-connected Wind Farms to Grid

Florin Iov, Poul Sørensen, Anca Daniela Hansen, Frede Blaabjerg

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Nowadays, there is an increasing trend to connect large MW wind farms to the transmission system. Requirements that focus on the influence of the farms on the grid stability and power quality, and on the control capabilities of wind farms have already been established. The main trends of modern wind turbines/farms are clearly the variable speed operation and a grid connection through a power electronic interface, especially using doubly-fed induction generators. Using power electronics the control capabilities of these wind turbines/farms are extended and thus the grid requirements are fulfilled.  However, the traditional squirrel-cage generators based wind turbines/wind farms directly connected to the grid have less control capabilities. These wind turbines/farms cannot regulate their production and contribute to power system stability. A DC transmission system for connection of the active stall wind farms to the grid can provide these features and also maximize the produced power especially at low wind speeds by using variable voltage/frequency for the wind farm. The focus in this paper is in studying the variable speed operation for the active stall wind farms using a voltage source converter based DC transmission system.
Original languageEnglish
JournalInternational Review of Electrical Engineering
Pages (from-to)10
Number of pages1
ISSN1827-6660
Publication statusPublished - 2006

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Farms
Wind turbines
Power electronics
Asynchronous generators
Electric potential
Power quality
System stability

Keywords

  • Wind power
  • Active stall wind farms
  • DC transmission system
  • Variable frequency operation

Cite this

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title = "Modelling, Analysis and Control of DC-connected Wind Farms to Grid",
abstract = "Nowadays, there is an increasing trend to connect large MW wind farms to the transmission system. Requirements that focus on the influence of the farms on the grid stability and power quality, and on the control capabilities of wind farms have already been established. The main trends of modern wind turbines/farms are clearly the variable speed operation and a grid connection through a power electronic interface, especially using doubly-fed induction generators. Using power electronics the control capabilities of these wind turbines/farms are extended and thus the grid requirements are fulfilled.  However, the traditional squirrel-cage generators based wind turbines/wind farms directly connected to the grid have less control capabilities. These wind turbines/farms cannot regulate their production and contribute to power system stability. A DC transmission system for connection of the active stall wind farms to the grid can provide these features and also maximize the produced power especially at low wind speeds by using variable voltage/frequency for the wind farm. The focus in this paper is in studying the variable speed operation for the active stall wind farms using a voltage source converter based DC transmission system.",
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author = "Florin Iov and Poul S{\o}rensen and Hansen, {Anca Daniela} and Frede Blaabjerg",
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Modelling, Analysis and Control of DC-connected Wind Farms to Grid. / Iov, Florin; Sørensen, Poul; Hansen, Anca Daniela; Blaabjerg, Frede.

In: International Review of Electrical Engineering, 2006, p. 10.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Modelling, Analysis and Control of DC-connected Wind Farms to Grid

AU - Iov, Florin

AU - Sørensen, Poul

AU - Hansen, Anca Daniela

AU - Blaabjerg, Frede

N1 - Issn: 1827-6679 (cd-rom)

PY - 2006

Y1 - 2006

N2 - Nowadays, there is an increasing trend to connect large MW wind farms to the transmission system. Requirements that focus on the influence of the farms on the grid stability and power quality, and on the control capabilities of wind farms have already been established. The main trends of modern wind turbines/farms are clearly the variable speed operation and a grid connection through a power electronic interface, especially using doubly-fed induction generators. Using power electronics the control capabilities of these wind turbines/farms are extended and thus the grid requirements are fulfilled.  However, the traditional squirrel-cage generators based wind turbines/wind farms directly connected to the grid have less control capabilities. These wind turbines/farms cannot regulate their production and contribute to power system stability. A DC transmission system for connection of the active stall wind farms to the grid can provide these features and also maximize the produced power especially at low wind speeds by using variable voltage/frequency for the wind farm. The focus in this paper is in studying the variable speed operation for the active stall wind farms using a voltage source converter based DC transmission system.

AB - Nowadays, there is an increasing trend to connect large MW wind farms to the transmission system. Requirements that focus on the influence of the farms on the grid stability and power quality, and on the control capabilities of wind farms have already been established. The main trends of modern wind turbines/farms are clearly the variable speed operation and a grid connection through a power electronic interface, especially using doubly-fed induction generators. Using power electronics the control capabilities of these wind turbines/farms are extended and thus the grid requirements are fulfilled.  However, the traditional squirrel-cage generators based wind turbines/wind farms directly connected to the grid have less control capabilities. These wind turbines/farms cannot regulate their production and contribute to power system stability. A DC transmission system for connection of the active stall wind farms to the grid can provide these features and also maximize the produced power especially at low wind speeds by using variable voltage/frequency for the wind farm. The focus in this paper is in studying the variable speed operation for the active stall wind farms using a voltage source converter based DC transmission system.

KW - Wind power

KW - Active stall wind farms

KW - DC transmission system

KW - Variable frequency operation

M3 - Journal article

SP - 10

JO - International Review of Electrical Engineering

JF - International Review of Electrical Engineering

SN - 1827-6660

ER -