A Joint Scheduling Strategy of CHP With Thermal Energy Storage and Wind Power to Reduce Sulfur and Nitrate Emission

Abstract

“Determining power by heat” is the main operation mode for combined heat and power (CHP) in “Three-North” regions in heating season, and high level of CHP output causes serious environmental pollution. Adding thermal storage to traditional CHP can break thermo-electric coupling constraint. In this paper, a joint scheduling model of CHP with thermal energy storage and wind power to reduce sulfur and nitrate emission is established, not only to reduce SO2 and NOx emissions, but also to take into account wind power accommodation ability. In the model factors, such as cost of fossil power generation units, operating cost of CHP, operating and maintenance cost of wind power, operating cost of desulfurization and denitrification units, SO2 and NOx emission charges, constraints of thermal balance and power balance, are synthetically considered. The proposed model is solved with CPLEX, and effectiveness of the model is verified by simulated example of IEEE 30-bus system.