Improvement of Transient Stability Margin in RES Based Power Systems Using STATCOM
Renewable energy sources (RES), one of the most prominent energy sources, are also gaining significant popularity around the globe. RES based energy systems designed with asynchronous generators with constant speed yield a very cost effective solution for power generation and nowadays are generally used to represent the renewable energy sources in power systems. These asynchronous generators used to consume reactive VARs. For the compensation of these consumable reactive VARs, shunt condensers can be inserted in the system, but these devices usually display very poor results during the transient behaviour of the system. Therefore, powerful and continuous reactive power controllers, such as Flexible Alternating Current Transmission Systems (FACTS), are necessary in these cases. In the present paper, the increment in the stability margin of power systems during the transient turbulences with integrated RES generation using the Static VAR Compensator (STATCOM) is investigated. The RES generators considered are the squirrel cage induction generators (SCIG). Simulation studies are carried out on the IEEE-9 bus design system. Studied results prove that the SCIG with STATCOM device significantly enhances the performance of the designed power network during transient disturbances.
Aekcrmann, T. et al. (2001). Distributed generation: A definition. Electrical Power Systems Research, 57:
195–204.
Ahilan, T., Mohammed, K.P. and S. Arumugham (2009). A critical review of global wind power generation. American Journal of Applied Science, 6: 204–213.
Al-Majed, S.I. and T. Fujigaki (2010). Wind power generation: An overview. Proceedings of the International Symposium Modern Electric Power Systems (MEPS), IEEE Xplore Press, Wroclaw, Poland, Sept. 20–22, 2010.
Amiri, M. and M. Sheikholeslami (2014). International Conf. on Inno. Eng. Technologies (ICIET, 2014), Bangkok, Thailand.
Amroune, M., Bourzami, A. and T. Bouktir (2012). 3rd Int. Conf. on Sc. and Tech. of A. Con. & Comp Engg, Monastir, Tunisia.
Gandhar, S., Ohri, J. and M. Singh (2014). 6th IEEE Int. Conf. on P. Elec., NIT Kurukshetra, India.
Grünbaum, Rolf (2010). FACTS for Grid Integration of Wind Power. Innovative Smart grid technologies conference Europe, IEEEPES. 11-13 Oct, 2010.
Kundur, P. (1994). Po. Sys. St. and Cont. New York: McGraw-Hill.
Milano, F. (2010). Power System Modelling and Scripting. London: Springer.
Qi, L., Langston, J. and M. Steurer (2008). Applying a STATCOM for Stability Improvement to an existing wind farm with fixed speed induction generators. In: Power System Society General Meeting—Conversion and Delivery of Electrical Energy in the 21st Century. Center for Adv. Power Syst., Florida State Univ. 20-24 July.
Tasneem, Z. and M.R.I. Sheikh (2014). 10th Int. Conf. on Mech. Eng., ICME 2013. Rajshahi, Bangladesh.
The Global Wind Energy Council (GWEC) (2017). Global Wind Report: Annual Market Update on 25 April 2017, Delhi.