Now a day wind power generation increased and largely incorporated in the grid. Through Medium voltage distribution line Wind farm (WF) connected to high voltage (HV) grid line represents wind energy conservation system. The wind farm connection at the point of common coupling (PCC) having problem due to system load change and varying wind speed cause power quality problem, PCC voltage variation and wind farm (WF) stability, is considered as WF connected to the weak grid. The quality related issue eliminated at generation or by using compensating method. The wind farm uses squirrel cage induction motor (SCIG) shows wind power conservation system. Stability concern of SCIG needs some alternative like compensating method. Custom Power Device (CUPS) technique useful compensating technique. This paper based on CUPS technique, unified power quality conditioner (UPQC). UPQC device controlled to regulate voltage and mitigate gird side voltage fluctuation caused by pulsating WF power generation and load change. The control strategy of UPQC is based on active and reactive power flow management in series and shunt converter and power exchange in DC-link.

1. M. P. Pa´lsson, K. Uhlen, J. O. G. Tande. "Large-scale Wind Power Inte- gration and Voltage Stability Limits in Regional Networks"; IEEE 2002. p. p. 762–769.
2. P. Ledesma, J. Usaola, J. L. Rodriguez "Transient stability of fixed speed wind farm" Renewable Energy 28, 2003 pp. 1341–1355.
3. R. C. Dugan, M. F. McGranahan, S. Santoso, H. W. Beaty "Electrical Power Systems Quality" 2nd Edition McGraw–Hill, 2002. ISBN 0-07- 138622-X.
4. P. Kundur "Power System Stability and Control" McGraw-Hill,1994. ISBN 0-07-035958-X.
5. N. G. Hingorani y L. Gyugyi. "Understanding FACTS". IEEE Press; 2000.
6. Z. Saad-Saoud, M. L. Lisboa, J. B. Ekanayake, N. Jenkins and G. Strbac "Application of STATCOM's to wind farms" IEEE Proc. Gen. Trans. Distrib. vol. 145, No. 5; Sept. 1998.

Pcc Upqc Scig Wind Farm (wf)