Multi-objective Differential Evolution Algorithm-based Optimization of Pump-free Startup Process of Million-kilowatt-level Ultra-supercritical Units
Aiming at addressing the large energy consumption and long startup duration in the circulating-pump-free star-tup process of the current ultra-supercritical million-kilowatt-level units,the present work made a preliminary attempt to introduce the multi-objective differential evolution algorithm into the optimization of the boiler's startup process.The main efforts entailed the establishment of objective function and constraint condition targeted at minimizing energy consumption and shortening startup time,and the solution of the optimization objective using multi-objective differential evolution algo-rithm.Through tentative application to the optimization of two 1000 MW ultra-supercritical units in the Yongzhou compa-ny,the proposed method was verified to be feasible and effective.