Optimal dynamic dispatch in short-term hydrothermal generation systems

This paper presents a nonlinear optimal model, which is solved by successive linear programming, for determining a feasible generation in the hydro generation system and the total MW generation of the thermal units. An efficient dynamic economic dispatch (DED) based on a look-ahead technique is introduced in the thermal generation system. Generation dispatch of the thermal units and the system marginal price are determined by DED. The minimal cost flow model of the hydro generation system is then formulated and solved by an out of kilter algorithm (OKA). Finally, the iterative algorithm between the generation dispatch in the thermal generation system and the feasible generation in the hydro generation system is proposed. This iterative process continues until an identical solution is obtained in two successive iterations. The performance of the proposed method is demonstrated and the results are presented