Analysis model on the impact of capacity expansion of wind power on coal consumption thermal power

The intermittency features of wind power have adverse impacts on the coal consumption of thermal generators especially during the spinning reserve status and startup-and-shutdown process. A fixed wind power capacity integrated unit commitment model based on energy-saving dispatching principle is established in this paper, and then the functional relations between the expansion of grid-connected wind power capacity and the various relevant coal consumption indexes of the thermal generators are formed. The simulation results of GAMS shows that along with the expansion of grid-connected wind power, the duration of spinning reserve status and the frequency of startup-and-shutdown process both increases. This lowers the unit efficiency and then results in more coal consumption. © Sila Science. All rights reserved.