High-Speed Real-Time Dynamic Economic Load Dispatch

A large amount of renewable energy penetration may cause a serious problem in load dispatch in the future power system, where the amount of controllable generators will decrease while disturbances increase. Therefore, a new economic load dispatch (ELD) method is required in order to make the best use of the ramp-rate capability of existing generators to cope with the disturbances caused by loads as well as by renewable energy generations. This paper proposes a new dynamic ELD method to meet the general requirements for real-time use in a future power system, where load following capability is critically limited. The method is also satisfactory from an economical point of view, and is suitable for high-speed online application due to fast and steady computation time. The proposed method has been successfully tested on several systems supplying a typical morning to noon demand profile.

[1]  J.-P. Chiou,et al.  A variable scaling hybrid differential evolution for solving large-scale power dispatch problems , 2009 .

[2]  F. N. Lee,et al.  Price-based ramp-rate model for dynamic dispatch and unit commitment , 1994 .

[3]  P. K. Chattopadhyay,et al.  Evolutionary programming techniques for economic load dispatch , 2003, IEEE Trans. Evol. Comput..

[4]  M. Shahidehpour,et al.  Dynamic Ramping in Unit Commitment , 2007, IEEE Transactions on Power Systems.

[5]  N. Yorino,et al.  Feasible operation region for dynamic economic load dispatch , 2010, TENCON 2010 - 2010 IEEE Region 10 Conference.

[6]  W. Grady,et al.  A Practical Approach to Unit Commitment, Economic Dispatch and Savings Allocation for Multiple-Area Pool Operation with Import/Export Constraints , 1980, IEEE Transactions on Power Apparatus and Systems.

[7]  A. Y. Abdelaziz,et al.  A hybrid HNN-QP approach for dynamic economic dispatch problem , 2008 .

[8]  C. B. Somuah,et al.  Application of linear programming redispatch technique to dynamic generation allocation , 1990 .

[9]  H. B. Gooi,et al.  Dynamic Economic Dispatch: Feasible and Optimal Solutions , 2001, IEEE Power Engineering Review.

[10]  W. Wood.  Spinning Reserve Constrained Static and Dynamic Economic Dispatch , 1982, IEEE Transactions on Power Apparatus and Systems.

[11]  Dale Ross,et al.  Dynamic Economic Dispatch of Generation , 1980, IEEE Transactions on Power Apparatus and Systems.

[12]  P. Rastgoufard,et al.  Dynamic economic dispatch using the extended security constrained economic dispatch algorithm , 1997 .

[13]  C.D. Vournas,et al.  Unit Commitment by an Enhanced Simulated Annealing Algorithm , 2006, 2006 IEEE PES Power Systems Conference and Exposition.

[14]  A. Bagchi,et al.  Economic dispatch with network and ramping constraints via interior point methods , 1998 .

[15]  C.-l. Chen,et al.  Simulated annealing-based optimal wind-thermal coordination scheduling , 2007 .

[16]  Naoto Yorino,et al.  Dynamic Economic Dispatch with Generator's Feasible Operation Region , 2010, 2010 Asia-Pacific Power and Energy Engineering Conference.