Contribution to a dynamic wind turbine model validation from a wind farm islanding experiment

Pedersen, J.K.; Helgelsen-Pedersen, K.O.; Poulsen, Niels Kjølstad; Akhmatov, Vladislav; Nielsen, Arne Hejde

doi:10.1016/s0378-7796(02)00144-x

Cited by 11 publications

(5 citation statements)

References 7 publications

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“…The simplified model of the WT with DFIG is shown in (10). When the signal of pitch angle β is used as a measurement, the parameters in θ 1 can be estimated.…”

Section: Parameter Estimation Proceduresmentioning

confidence: 99%

“…Normally, disturbances in the power grid, such as voltage dips or short-circuit faults, are applied, and power measurements are used to validate models of wind turbines [4][5][6][7][8][9]. In [10], an experiment to estimate the mechanical parameters of WTs was performed by islanding the wind farm. In [11][12][13], a short-circuit fault was used to estimate the inertia of a WT based on measurements of frequency trajectories, and in [14], the parameters of an induction generator were identified based on the change in system frequency.…”

Section: Introductionmentioning

confidence: 99%

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Online Estimation of the Mechanical Parameters of a Wind Turbine with Doubly Fed Induction Generator by Utilizing Turbulence Excitations

et al. 2022

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In this paper, a new method using wind turbulence excitation is proposed to estimate the parameters of the mechanical system (drivetrain and pitch angle controller) in a Doubly Fed Induction Generator (DFIG) Wind Turbine (WT). Firstly, simulations were carried out for a DFIG WT under turbulence excitations. The spectral contents of the responses imply that the transients of the electrical system (generator and converter), which are much faster than those of the mechanical system, can be neglected when estimating the mechanical parameters. Based on this, a simplified model related to the mechanical system of the DFIG WT was derived by applying the model reduction technique. Secondly, the parameter sensitivity of Power Spectral Density (PSD) was used to quantify the impacts of individual parameters on the dynamics of the mechanical system, and the influential parameters were selected on the basis of the sensitivity results. Finally, a weighted least-squares optimization problem, which is suitable for a system with close oscillation modes, was formulated for parameter estimation. The estimation results based on two different types of optimization methods were compared, and their estimation accuracies validate the effectiveness of the proposed method.

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“…The simplified model of the WT with DFIG is shown in (10). When the signal of pitch angle β is used as a measurement, the parameters in θ 1 can be estimated.…”

Section: Parameter Estimation Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Online Estimation of the Mechanical Parameters of a Wind Turbine with Doubly Fed Induction Generator by Utilizing Turbulence Excitations

et al. 2022

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“…The frequencies obtained were 2·8 and 10·5 Hz, which are similar to those obtained with full representation of the rotor dynamics (Figure 3(b)). An experimentally determined frequency for a large FSIG (600 kW) of oscillation of the rotor structure of 1·7 Hz is given in Pedersen et al 16 From this example, it can be noticed that the effective flexibility of the blade, K 1 , is 0·4 times smaller than the flexibility of the shaft, K 2 , i.e. the blade flexibility is much more important than that of the shaft.…”

Section: Example: 300 Kw Fsig Wind Turbinementioning

confidence: 99%

Influence of rotor structural dynamics representations on the electrical transient performance of FSIG and DFIG wind turbines

Ramtharan

Jenkins²,

Anaya‐Lara³

et al. 2007

Wind Energy

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An assessment of the impact that the representation of rotor structural dynamics has on the electrical transient performance of fixed-speed induction generators (FSIGs) and doubly fed induction generators (DFIGs) wind turbines is presented. A three-mass model that takes into account not only the shaft flexibility but also the blade flexibility in the structural dynamics is developed and used to derive an effective two-mass model of the drive train dynamics, which represents the dominant natural frequency of vibration of the rotor structure. For the purposes of this investigation, the dynamic performance of both FSIG and DFIG wind turbines is evaluated during electrical transients such as a three-phase fault in the network. The studies are conducted in the software code Bladed, where a detailed representation of the structural dynamics is used to derive the three-mass model and the effective two-mass model. Simulation results which illustrate how these representations of the rotor dynamics affect the response of the wind turbine during the fault are presented and discussed

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“…To simulate the dynamic performance of wind turbine generators (WTGs) and study their effects on power system operation, it is important to develop accurate mathematical models of WTGs [1]. Recently, many researches were carried out on parameter estimation or model validation of WTGs by utilising disturbances on power grid, such as voltage dips or short‐circuit faults, whereas the wind speed was assumed to keep constant because wind speed variations are much slower than the dynamics of the WTG caused by the grid faults [2–7]. In [8], the ramp wind speed was used as excitations to estimate the WTG parameters.…”

Section: Introductionmentioning

confidence: 99%

“…Such measurements are typically collected from tests (e.g. a wind farm islanding experiment [3]) or through faults on the power system [14, 15]. In [16–18], the inertia of WTGs was estimated based on measurements of frequency trajectories after a short‐circuit fault.…”

Section: Introductionmentioning

confidence: 99%

Parameter estimation of drive system in a fixed‐speed wind turbine by utilising turbulence excitations

Pan

et al. 2013

IET Generation, Transmission & Distribution

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Contribution to a dynamic wind turbine model validation from a wind farm islanding experiment

Cited by 11 publications

References 7 publications

Online Estimation of the Mechanical Parameters of a Wind Turbine with Doubly Fed Induction Generator by Utilizing Turbulence Excitations

Online Estimation of the Mechanical Parameters of a Wind Turbine with Doubly Fed Induction Generator by Utilizing Turbulence Excitations

Influence of rotor structural dynamics representations on the electrical transient performance of FSIG and DFIG wind turbines

Parameter estimation of drive system in a fixed‐speed wind turbine by utilising turbulence excitations

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