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Friday, 18 August 2017

Offshore Wind Farm Power Control Using HVdc Link Control de puissance d’un parc éolien en mer utilisant la liaison CCHT


ABSTRACT:
KEYWORDS:
4.       PQ-bus

SOFTWARE: MATLAB/SIMULINK

BLOCK DIAGRAM:



Fig. 1. Proposed configuration of wind turbines connection.


EXPECTED SIMULATION RESULTS:




Fig. 2. (a) Wind speed variations (m/s). (b) Turbine rotational speed (rad/s).
(c) Turbine efficiency.




Fig. 3. HVdc link voltage.



Fig. 4. Wind farm output power.
CONCLUSION:
In this paper, the configuration and control methods have been proposed for the offshore wind turbines, connected to the onshore grid. This method is capable to control and smooth the wind farm output power, injected to the onshore grid. The proposed system can mitigate the fluctuations of wind farm output power, even during wind speed variations. In other words, the wind farm can operate such as a PQ-bus. Moreover, two strategies (fixed power and MPPT) have been analyzed and compared with each other. Finally, the proposed method is compared with other similar works to smooth the output power of the wind farm. The main result is that the proposed method can smooth the output power better than the TSR, PAC, and OTC methods. But it is a bit weaker than the KEC method in power smoothing issue. Moreover, using this method, the wind farm is able to cooperate in frequency control of the onshore grid by controlling the desired active power, to improve the power system operation, which is the future work of the authors.
REFERENCES:
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[5] M. Kesraoui, N. Korichi, and A. Belkadi, “Maximum power point tracker of wind energy conversion system,” Renew. Energy, vol. 4, no. 10, pp. 2655–2662, 2011.