Transient stability of DFIG wind turbines at an external short‐circuit fault

Sun, Tao; Chen, Zhe; Blaabjerg, Frede

doi:10.1002/we.164

Cited by 146 publications

(61 citation statements)

References 11 publications

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“…The aerodynamic power captured by the wind is given by (1).Tip Speed Ratio(λ) and power co efficient (C P ) can be expressed as (2) , (3) , (4) [9][10][11][12][13].…”

Section: A Wind Turbine Modelmentioning

confidence: 99%

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A new control strategy for smoothing of wind farm output using short-term ahead wind speed prediction and Flywheel energy storage system

Islam

Hasanien

Al‐Durra

et al. 2012

2012 American Control Conference (ACC)

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Abstract-With the increased integration of wind energy into power networks it has become more important to have a reliable system for mitigating the fluctuations of output power supplied to the grid. This paper proposes a new control scheme to smooth the output power fluctuations of an aggregated wind firm using Flywheel energy storage system (FESS) and shortterm ahead prediction of wind speed. In the proposed system, the kinetic energy of the FEES is utilized to smooth the output power fluctuations of wind farm. In addition, the stored energy of FESS is utilized in most efficient way by correcting the power reference using prediction base control. This helps to reduce the overall system cost by keeping the size of the energy storage system at minimum. The effectiveness of the proposed control is verified by using PSCAD/EMTDC.

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“…The aerodynamic power captured by the wind is given by (1).Tip Speed Ratio(λ) and power co efficient (C P ) can be expressed as (2) , (3) , (4) [9][10][11][12][13].…”

Section: A Wind Turbine Modelmentioning

confidence: 99%

“…In FESS, a part of the stator output power is supplied to the rotor side converter where it is converted into DC power. This DC power is again converted into AC power and then supplied to the rotor [13]. DC-link relevant parameters are given in Table II.…”

Section: Configuration Of Fessmentioning

confidence: 99%

A new control strategy for smoothing of wind farm output using short-term ahead wind speed prediction and Flywheel energy storage system

Islam

Hasanien

Al‐Durra

et al. 2012

2012 American Control Conference (ACC)

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show abstract

“…However, a DFIG system inevitably faces the problems of overvoltage and overcurrent in extreme situations [3]. During a short-circuit fault, a very high current flows through both stator and rotor windings, and the terminal voltage of the DFIG becomes very low [4].…”

Section: Introductionmentioning

confidence: 99%

Transient stability enhancement of DC-connected DFIG and its converter system using fault protective device

Yan

Zhang

et al. 2017

J. Mod. Power Syst. Clean Energy

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Transient stability of doubly-fed induction generators (DFIGs) is a major concern in both AC and DC grids, and DFIGs must stay connected for a time during grid faults according to the power grid requirements. For this purpose, this work proposes an overcurrent and overvoltage protective device (OCV-PD) to ensure that DCbased DFIG system can stay connected and operate well during the faults. Compared with a series dynamic braking resistor (SDBR), two aspects are improved. First, a twolevel control strategy and DC inductor circuit are used to ensure that the OCV-PD can limit the current impulse to protect DFIG system during an overcurrent fault. Second, the OCV-PD can protect system from overvoltage fault which a SDBR cannot do. Simulation results verify its validity and feasibility, finding that for overcurrent protection the OCV-PD outperforms a SDBR with an average decreased index of 3.29%, and for overvoltage protection it achieves an average index of 1.02%.

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“…In recent years, lots of research efforts have been devoted to improving the performance of the steady-state and transient response of DFIG tidal turbines under symmetrical supply voltage [8][9][10]. In reality, however, asymmetrical faults happen much more frequently than symmetrical faults [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Doubly Fed Induction GeneratorTidal Current Turbines on Stability of a Distribution Grid under Unbalanced Voltage Conditions

Zhang

et al. 2017

Energies

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This paper analyses the effects of doubly fed induction generator (DFIG) tidal current turbines on a distribution grid under unbalanced voltage conditions of the grid. A dynamic model of an electrical power system under the unbalanced network is described in the paper, aiming to compare the system performance when connected with and without DFIG at the same location in a distribution grid. Extensive simulations of investigating the effect of DFIG tidal current turbine on stability of the distribution grid are performed, taking into account factors such as the power rating, the connection distance of the turbine and the grid voltage dip. The dynamic responses of the distribution system are examined, especially its ability to ride through fault events under unbalanced grid voltage conditions. The research has shown that DFIG tidal current turbines can provide a good damping performance and that modern DFIG tidal current power plants, equipped with power electronics and low-voltage ride-through capability, can stay connected to weak electrical grids even under the unbalanced voltage conditions, whilst not reducing system stability.

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Transient stability of DFIG wind turbines at an external short‐circuit fault

Cited by 146 publications

References 11 publications

A new control strategy for smoothing of wind farm output using short-term ahead wind speed prediction and Flywheel energy storage system

A new control strategy for smoothing of wind farm output using short-term ahead wind speed prediction and Flywheel energy storage system

Transient stability enhancement of DC-connected DFIG and its converter system using fault protective device

Effect of Doubly Fed Induction GeneratorTidal Current Turbines on Stability of a Distribution Grid under Unbalanced Voltage Conditions

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