中国煤电机组改造升级效果分析与展望OA北大核心CSTPCD

The upgrading and transformation of coal-fired power plants serve as a pivotal means to enhance the cleanliness,efficiency,and flexibility of coal-fired power units,as well as to adapt to the shift towards a dual emphasis on foundational security and system regulation in coal-fired power generation.By analyzing the current status and effectiveness of coal-fired power unit upgrades in China,this study explores the major issues encountered during the upgrading process and proposes measures to promote such upgrades.It also offers a prospective view on the development of coal-fired power plant transformation.The research reveals that the energy-saving and carbon-reduction modifications in coal-fired power plants can reduce the average coal consumption for power supply under rated conditions by approximately 5 g/(kW·h).The flexibility enhancements enable the minimum output load of modified units to decrease from roughly 42%of the rated load to approximately 29%of the rated load.Additionally,the heating modifications increase the heat supply of modified units by approximately 56%.However,the upgrading process faces challenges such as the coordination of load rate and coal consumption for power supply,investment and returns,technology selection,and reliability.To address these issues,this study puts forward recommendations from the perspectives of operation,technology,and policy,providing valuable references for the orderly promotion of coal-fired power plant upgrades.