Re-Dispatch Approach for Congestion Relief in Deregulated Power Systems

  ijett-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2013 by IJETT Journal
Volume-4 Issue-5
Year of Publication : 2013
Authors : Ch. Naga Raja Kumari , M. Anitha


Ch. Naga Raja Kumari , M. Anitha. "Re-Dispatch Approach for Congestion Relief in Deregulated Power Systems". International Journal of Engineering Trends and Technology (IJETT). V4(5):1776-1780 May 2013. ISSN:2231-5381. published by seventh sense research group.


In the competitive power market environment , congestion is an indicator for the need of transmission system reconfiguration by compensation devices or its expansion with new lines erection. Due to economic considerations, the short time solution like re - dispatch is also playing a key role in the present scenario. In some inevitable cases, moderating the congestion by load shedding is the only solution which is not good in practice. Hence this paper addresses a solution for congestion relief, i.e. r e - scheduling of generators if required simultaneously with load reduction . In re - schedule method, some of the generators are required to increase/decrease their actual market schedule which causes to increase/decrease transmission losses. Si multaneously, the increase in production cost so called congestion cost . The IEEE - 6 bus and IEEE 14 bus test system s are used to show the effectiveness of the proposed method .


[1] Ashwani Kumar, S.C. Srivastava, and S.N. Singh, “Congestion management in competitive power market: A bibliographical survey,” Electric Power Systems Research, vol. 76, pp. 153 – 164, July 2005.
[2] T. L i and S. M. Shahidehpour, “Strategic Bidding of Transmission Constrained GENCOs with Incomplete Information,” IEEE Trans. on Power Systems”, 20(1), 2005, 437 - 447.
[3] N.S. Rau, Transmission Loss and Congestion Cost Allocation: An Approach Based on Responsibili ty , IEEE Trans. Power Syst . 15(4), 2000, 1401 – 1409.
[4] B.K. Talukdar, A.K. Sinha, S. Mukhopadhyay, A. Bose, “A Computationally Simple Method For Cost - Efficient Generation Rescheduling and Load Shedding For Congestion Management”, Electric Power Energy Syst. 2 7(5) 2005, 379 – 388.
[5] E.N. Miguelej, L.R. Rodriguej, “A Practical Approach To Solve Power System Constraints with Application to the Spanish Electricity Market”, IEEE Trans. Power Syst., 19(4), 2004, 2029 – 2037.
[6] E. Bompard, P. Correia, G. Gross, M. Amelin, “C ongestion Ma nagement Schemes: A Comparative Analysis under A Uni fied Framework, IEEE Trans. Power Syst., 18(1), 2003, 346 – 352.
[7] Hadi Saadat, Power System Analysis, ( Tata McGraw - Hill Education, 2002)
[8] Allen J. Wood and Bruce F. Wollenberg , Power Generation, Operation, a nd Control ( J. Wiley & Sons, 1996 )
[9] Kennedy Mwanza , You Shi, “Congestion Management: Re - dispatch and Application of FACTS”, Master’s Thesis 2006, Chalmers University Of Technology, Sweden
[10] www.pserc.cor matpower /

Deregulated power system, Congestion relief, D ay - A head electricity mar ket, Re - dispatch , Load curtailment .