A spot price of electricity algorithm applied to lossy short‐term hydrothermal scheduling problem with limited energy supply thermal units

Abstract

SUMMARYA lossy electric power system including normal and limited energy supply thermal units and hydraulic units are considered in this paper. The total thermal cost for an operation period of the system is minimized under some possible electric, hydraulic, and fuel constraints. The minimization of the total thermal cost is achieved by determining active generations of all units in all subintervals by means of a spot price of electricity algorithm proposed by our research group. Application of the algorithm is demonstrated on a lossy electric power system that contains 16 buses, three normal thermal, two limited energy supply thermal and 4 hydraulic units (coupled). Obtained results are discussed in the example section of the paper.

Nonlinear optimization method for short‐term hydro scheduling considering head‐dependency

“…Hence, it is necessary to consider head-dependency on short-term hydro scheduling in order to obtain more realistic and feasible results. In a cascaded hydraulic configuration, where plants can be connected in both series and parallel [3], the release of an upstream plant contributes to the inflow of the next downstream plants, implying spatial-temporal coupling among reservoirs. Head-dependency coupled with the cascaded hydraulic configuration augments the problem complexity and dimension.…”