Demand response scheduling in SCUC problem for solar integrated thermal system using firefly algorithm

The strategies involved in scheduling generators and reliability management of power system is changing rapidly due to restructuring of power system. This paper critically reviews the reliability impacts of solar integrated thermal power plants and DR management. DR refers to the actions taken by the Independent system operator (ISO) to respond to a shortage of supply for a short duration of time, thereby maintaining the system reliability by scheduling spinning reserves. This paper presents a Binary real coded firefly (BRCFF) algorithm for solving Security constrained unit commitment (SCUC) problem for the hybrid power system incorporating reliability constraints. The Loss of load probability (LOLP) is the reliability index used for evaluating the system reliability level. The evaluation of the reliability index includes both unavailability of thermal generator units and unavailability of Solar cell generators (SCG). The proposed methodology is tested and validated on an IEEE RTS 24 bus system.