Coordinated Rotor Speed and Pitch Angle Control of Wind Turbines for Accurate and Efficient Frequency Response

This paper presents a wind turbine (WT) control strategy to deliver frequency response (FR) that is similar to conventional synchronous generators, i.e., to deliver accurate and efficient FR. This is achieved by the coordination of WT's rotor speed control (RSC) and pitch angle control (PAC), w...

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Vydané v:IEEE transactions on power systems Ročník 37; číslo 5; s. 3566 - 3576
Hlavní autori: Tu, Ganggang, Li, Yanjun, Xiang, Ji
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: New York IEEE 01.09.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Predmet:
Control theory
coordinated control
Coordination
deloading control
Frequency control
Frequency response
Maximum power tracking
Picture archiving and communication systems
Pitch (inclination)
pitch angle control
Real-time systems
Rotor speed
rotor speed control
Rotors
Speed control
Velocity control
Wind power
Wind power generation
Wind speed
Wind turbine
Wind turbines
ISSN:0885-8950, 1558-0679
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Shrnutí:This paper presents a wind turbine (WT) control strategy to deliver frequency response (FR) that is similar to conventional synchronous generators, i.e., to deliver accurate and efficient FR. This is achieved by the coordination of WT's rotor speed control (RSC) and pitch angle control (PAC), wherein the RSC is the summation of the proposed deloading power point tracking curves and FR signal; the PAC is kept as adjusting its control law according to the WT rotor speed. Through the above coordination, the strategy pre-reserves a portion of wind power and releasing it during underfrequency events. Compared with existing methods, the strategy has two significant advantages: 1) it does not need the switching of WT controls according to the real-time wind speed (WS), nor the identification of the boundaries among high, medium and low WSs according to the required reserved power, ultimately reducing the complexity of applying the strategy to practice; 2) its active power response during FR period is independent of the deviated rotor speed and is equal to the FR signal, ultimately enabling the WT to provide accurate and efficient FR. The simulations focusing on the grid frequency side demonstrated the advantages of the strategy over existing methods.
Bibliografia:ObjectType-Article-1
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ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2021.3136822