Model based active power control of a wind turbine

Mirzaei, Mahmood; Soltani, Mohsen; Poulsen, Niels Kjølstad; Niemann, Hans Henrik

doi:10.1109/acc.2014.6859055

Cited by 32 publications

(25 citation statements)

References 8 publications

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“…Another strategy to down regulate a wind turbine is to change both the rotational speed and the generated power set points. It is shown that the latter makes a smooth transition from the partial load to the full load region [10]. Results for a third strategy which keeps the benefits of the former strategy and provides a smoother transition between the full load and the partial load is also given.…”

Section: Introductionmentioning

confidence: 98%

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Turbine Control strategies for wind farm power optimization

Mirzaei

Göçmen

Giebel

et al. 2015

2015 American Control Conference (ACC)

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In recent decades there has been increasing interest in green energies, of which wind energy is the most important one. In order to improve the competitiveness of the wind power plants, there are ongoing researches to decrease cost per energy unit and increase the efficiency of wind turbines and wind farms. One way of achieving these goals is to optimize the power generated by a wind farm. One optimization method is to choose appropriate operating points for the individual wind turbines in the farm. We have made three models of a wind farm based on three difference control strategies. Basically, the control strategies determine the steady state operating points of the wind turbines. Except the control strategies of the individual wind turbines, the wind farm models are similar. Each model consists of a row of 5MW reference wind turbines. In the models we are able to optimize the generated power by changing the power reference of the individual wind turbines. We use the optimization setup to compare power production of the wind farm models. This paper shows that for the most frequent wind velocities (below and around the rated values), the generated powers of the wind farms are different. This means that choosing an appropriate control strategy for the individual wind turbines will result in an increased power production of the wind farm.

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Section: Introductionmentioning

confidence: 98%

“…Results for a third strategy which keeps the benefits of the former strategy and provides a smoother transition between the full load and the partial load is also given. An analysis of the dynamic loads and actuator activities for the three strategies is given in [10].…”

Section: Introductionmentioning

confidence: 99%

Turbine Control strategies for wind farm power optimization

Mirzaei

Göçmen

Giebel

et al. 2015

2015 American Control Conference (ACC)

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“…turbine down-regulation is used to increase the total power production for the entire wind farm by curtailing upwind turbine. The total power production can be achieved when the loss of power from down-regulating upstream wind turbines is smaller than the gain in power from the downwind turbines [3]. On the other hand, turbine down-regulation is carried out to reduce loads on the turbine during abnormal conditions (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…The author suggests that the down-regulation strategy design should avoid stalling and non-monotonic behaviour. Three down-regulation strategies were described and compared in [3]. Those are maximum rotor speed, constant rotor speed and constant tip speed ratio (TSR) respectively.…”

Section: Introductionmentioning

confidence: 99%

Comparison of loads for wind turbine down-regulation strategies

Zhu

Soltani

et al. 2017

2017 11th Asian Control Conference (ASCC)

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Abstract-For wind farm active power setpoint tracking, both farm level and turbine level down-regulation strategies should to be optimized considering turbine health condition. Several down-regulation strategies are chosen to analyse the wind turbine load performance according to different wind speed and power reference. In this paper we suggest appropriate down-regulation strategy to control wind turbine for active power reference tracking. we compare four different down-regulation strategies, namely Const-Ω, Const-λ , Max-Ω and Min-C t and discuss the loads on main components and downstream wind speed by presenting analysis of several wind scenarios and simulation in full-range operation.

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“…The other method is to modify the set points of both the output power and the rotational speed. For more details on the control strategies please see (Mirzaei et al, 2014). Both of these methods are implemented in the nonlinear model of the wind turbines.…”

Section: The Pi Controller For Down-regulated Turbinesmentioning

confidence: 99%

Estimation of the Possible Power of a Wind Farm

Mirzaei

Göçmen

Giebel

et al. 2014

IFAC Proceedings Volumes

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It seems possible to increase competitiveness of wind power plants by offering grid services (also called ancillary services) and enter the wind power plants into the ancillary market. One of the ancillary services is called reserve power, the differential capacity between the generated power and the available power in the farm. The total amount of energy that a wind farm can potentially generate is called possible power. It is very important for a wind farm owner to have a relatively accurate estimate of the possible power of the wind farm in order to be able to trade the reserve power. In this paper the possible power calculated based on the estimated effective wind speed of a down regulated wind farm (the industry standard) is compared against the calculated possible power based on the algorithm presented in the paper. The latter takes into account the effect of the wakes of down regulated turbines and therefore gives a more accurate measure of the possible power. It is shown that for an interval of wind speeds the difference between these two can increase the uncertainty in the estimate of the possible power of the down regulated wind farm.

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Model based active power control of a wind turbine

Cited by 32 publications

References 8 publications

Turbine Control strategies for wind farm power optimization

Turbine Control strategies for wind farm power optimization

Comparison of loads for wind turbine down-regulation strategies

Estimation of the Possible Power of a Wind Farm

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