Newton-Raphson Load-Flow Analysis in Complex form with UPFC

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2015 by IJETT Journal
Volume-27 Number-1
Year of Publication : 2015
Authors : S.K.Salma Sulthana, M.Naga Jyothi
DOI :  10.14445/22315381/IJETT-V27P206


S.K.Salma Sulthana, M.Naga Jyothi"Newton-Raphson Load-Flow Analysis in Complex form with UPFC", International Journal of Engineering Trends and Technology (IJETT), V27(1),33-39 September 2015. ISSN:2231-5381. published by seventh sense research group

The important implication of complex-variable Newton-Raphson load flow analysis is that reduction in memory access is achieved by the complex-variable Newton- Raphson method. This significant reduction in memory access achieved will lead to the advantage of substantial reduction in computing time which will increase the efficiency. In addition complex-variables offer a flexible and direct approach for modelling of UPFC. This paper develops a Newton-Raphson load flow analysis formulation which includes UPFC. A brief analysis on load flow calculation methods and UPFC is presented. Proposed system is simulated for IEEE 30 BUS system using Mi-Power software.


1) N. G. Hingorani, “Power Electronics in Electric Utilities: Role of Power Electronics in Future Power Systems”, Proceedings of the IEEE, Vol.76, NO. 4, pp 481-482, April 1988.
2) N. G. Hingorani, “Flexible AC transmission,” IEEE Spectra, vol. 30, no. 4, pp. 40–45, April 1993.
3) N.G.Hingorani and L.Gyugyi, “Understanding FACTS: concepts and technology of Flexible ac transmission systems”, IEEE Press, NY, 1999.
4) Hingorani, N.G., “High power electronics and flexible AC transmission system”, IEEE Power Eng. Reo, July 1988.
5) K.R.Padiyar, “FACTS Controllers in power transmission and distribution”, New Age International Publishers, 2007.
6) Abdul Haleem, Ravireddy Malgireddy, “Power Flow Control with Static Synchronous Series Compensator (SSSC)”, International Conference on Science and Engineering (ICSE), 2011, ISBN: 978- 981-08-7931.

Load flow analysis, Newton-Raphson method, complex functions and variables, FACTS devices.