Impact of Reactive Power in Power Evacuation from Wind Turbines

Ashish Ranjan, S. Prabhakar Karthikeyan, Ankur Ahuja, K. Palanisamy, I. Jacob Raglend, D. P. Kothari

chool of Electrical Sciences, Vellore Institute of Technology, Vellore, India.
Christian College of Engineering and Technology, Ottanchatiram, Dindugal District. India.
School of Electrical Sciences, Vellore Institute of Technology, Vellore, India.
Vellore Institute of Technology University, Vellore, India.

DOI: 10.4236/jemaa.2009.11004                

Abstract

Application of Distributed Generation (DG) to supply the demands of a diverse customer base plays a vital role in the renewable energy environment. Various DG technologies are being integrated into power systems to provide alterna-tives to energy sources and to improve reliability of the system. Power Evacuation from these remotely located DG’s remains a major concern for the power utilities these days. The main cause of concern regarding evacuation is con-sumption of reactive power for excitation by Induction Generators (IG) used in wind power production which affects the power system in variety of ways. This paper deals with the issues related to reactive power consumption by Induc-tion generators during power evacuation. Induction generator based wind turbine model using MATLAB/SIMULINK is simulated and its impact on the grid is observed. The simulated results are analyzed and validated with the real time results for the system considered. A wind farm is also modeled and simulations are carried out to study the various im-pacts it has on the grid & nearby wind turbines during Islanding and system event especially on 3-Phase to ground fault.

Keywords

Distributed Generation (DG), Grid, Wind Turbines, Induction Generator, Islanding, Power Evacuation, Point of Common Connection 3 Phase to Ground Fault

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	S. Santoso and H. T. Le, “Fundamental time-domain wind turbine models for wind power studies,” Renewable Energy 32, pp. 2436-2452, 2007.
[2]	K. C. Divya and P. S. N. Rao, “Models for wind turbine generating systems and their application in load flow studies,” Electric Power Systems Research 76, pp. 844-856, 2006.
[3]	C. Diduch, J. Yin, and L. C. Chang, “Recent developments in islanding detection for distributed power generation,” Large Engineering Systems Conference, pp. 124-128, 2004.
[4]	S. I. Jang and K. H. Kim, “An islanding detection method for distributed generations using voltage unbalance and to-tal harmonic distortion of current,” IEEE Transactions on Power Delivery, Vol. 19, No. 2, April 2004.
[5]	IEEE Standard 15477M, “Standard for interconnecting distributed resources with electric power systems,” June 2003.
[6]	N. Farhan, A. Rajesh, and V Y. Mohammad, “Uninten-tional islanding and comparison of prevention tech-niques,” Proceedings of 37th Annual North American Conference, pp. 90-96, 2005.
[7]	R. A. Walling and N. W. Miller, “Distributed generation islanding-implications on power system dynamic per-formance,” Proceedings of the IEEE/PES, Summer Power Meeting, Chicago, July 2002.
[8]	S. Panda and N. P. Padhy, “Investigating the impact of wind speed on active and reactive power penetration to the distribution network,” International Journal of Electri-cal Systems Science and Engineering, Vol. 1, No. 1, ISSN 1307-8917, 2008.