Improve the Power Quality of Wind Power Plant by Modifying the Theory of Instantaneous Active and Reactive Power

Öz

One of the most important issues in the clean energy topics is related to the clean electricity generation with desired quality. Low quality electricity causes increasing the losses, mis-operation of the protection relays, saturation of iron core transformer and etc. Hence, it seems necessary to supply electricity with acceptable quality satisfying related standards such as IEEE-519. Quality of the power generated by wind turbines should be investigated and in order to improve its performance, some strategies should be taken if needed. A wind turbine is connected to the grid through a converter. Traditional converters are fixed-speed and the advanced systems are variable-speed. The most important advantage of the advanced systems is related to the mitigated mechanical stress and increasing of the energy capacity. Rectifier and inverter are involved in the topology of variable-speed machines. In this paper, a mathematical model of this system i.e. variable speed machine which is defined in the rotating reference frame of rotor is presented. Rectifiers and inverters contains some power electronic elements which are the major causes of harmonic generation because of their nonlinear characteristics. Harmonics are the one of the most important phenomena decreasing the power quality. Therefore, it seems that mitigation of the harmonic will be necessary. Shunt active filter is used to reduce the current harmonics. This filter has three components namely identification, modulation and inverter. Some of the identification methods are sensitive with respect to the input voltage harmonics. So, an algorithm which shows the better performances, has been used in the identification part. Finally, performance of the mentioned filter has been proved through the simulation

Anahtar Kelimeler

• Wind turbine; theory of instantaneous active and reactive power; filter; harmonic

Kaynakça

1. American Wind Energy Association website. Available: www.awea.org
2. G. W. E. Council, "Global wind power continues expansion," Retrieved June, vol. 24, p. 2005, 2005.
3. E. Allan, N. Jenkins, F. Castro, Z. Saad-Saoud, J. Roman, M. Rodrifues, et al., "Large wind turbines and weak rural electricity systems," in Proceedings of the BWEA Conference, Stirling, 1994.
4. F. S. dos Reis, S. Islam, K. Tan, J. Ale, F. Adegas, and R. Tonkoski, "Harmonic mitigation in wind turbine energy conversion systems," in Power Electronics Specialists Conference, 2006. PESC'06. 37th IEEE, 2006, pp. 1-7.
5. J. Li, N. Samaan, and S. Williams, "Modeling of large wind farm systems for dynamic and harmonics analysis," in Transmission and Distribution Conference and Exposition, 2008. T&# x00026; D. IEEE/PES, 2008, pp. 1-7.
6. F. S. dos Reis, J. Ale, F. Adegas, R. Tonkoski, S. Slan, and K. Tan, "Active shunt filter for harmonic mitigation in wind turbines generators," in Power Electronics Specialists Conference, 2006. PESC'06. 37th IEEE, 2006, pp. 1-6.
7. V. F. Corasaniti, M. B. Barbieri, P. L. Arnera, and M. I. Valla, "Hybrid active filter for reactive and harmonics compensation in a distribution network," Industrial Electronics, IEEE Transactions on, vol. 56, pp. 670-677, 2009.
8. A. Hoseinpour and R. Ghazi, "Harmonic Reduction in Wind Turbine Generators Using a Shunt Active Filter," International Review on Modelling & Simulations, vol. 5, 2012.

9. S. Rahmani, N. Mendalek, and K. Al-Haddad, "Experimental design of a nonlinear control technique for three-phase shunt active power filter," Industrial Electronics, IEEE Transactions on, vol. 57, pp. 3364- 3375, 2010. [10]
10. A. Hoseinpour, S. M. Barakati, and R. Ghazi, "Harmonic reduction in wind turbine generators using a Shunt Active Filter based on the proposed modulation technique," International Journal of Electrical Power & Energy Systems, vol. 43, pp. 1401-1412, 2012. [11]
11. B. S. Borowy and Z. M. Salameh, "Dynamic response of a stand-alone wind energy conversion system with battery energy storage to a wind gust," Energy Conversion, IEEE Transactions on, vol. 12, pp. 73-78, 1997. [12]
12. B. Sedaghat, A. Jalilvand, and R. Noroozian, "Design of a multilevel control strategy for integration of stand-alone wind/diesel system," International Journal of Electrical Power & Energy Systems, vol. 35, pp. 123- 137, 2012. [13]
13. P. C. Krause, "Analysis of Electric Machinery. 1986," ed: McGraw-Hill, New York. [14]
14. W. Lynch, "Ni-Cd Battery Modeling, Evaluation and Applications in Electric Car," Doctoral Dissortation, University of Massachusetts Lowell, Lowell, MA, anticipated date of publication-June, 1996. [15]
15. D. N. M. Teimouri, S. H. Hoseini, "New Method for Calculation of Reference Currents of ALPC for Reactive Power Control, Harmonics Elimination and Load Balancing in Unbalanced Conditions," presented at the 18 Conference of Electrical Engineering, Iran, 2003.