【摘要】 文章对600 MW级亚临界机组节能提效升级改造技术进行了深入研究,通过采取汽轮机通流改造、凝汽器双背压改造、循环水泵的改造以及辅助系统的改造等技术措施,降低供电标煤耗,提高经济效益。对亚临界机组未来在电网中的定位进行了研究,结果表明,亚临界机组具备深度调峰至约40%额定负荷的能力,且在大型火电机组中具有相对较好的调峰经济性,未来亚临界机组将在充分的节能提效改造的基础上,在电网中逐步参加深度调峰,增强电网的灵活性和适应性。更多还原

【Abstract】 The efficiency improvement technology for 600 MW subcritical unit is studied. Through flow retrofit for steam turbine, double back pressure retrofit for condenser, circulating water pump retrofit and other retrofits for auxiliary systems are adopted. Lower standard coal consumption and higher economic benefits are achieved. And future development situation for in-service subcritical units is also studied. Subcritical units have the ability of depth peak-load regulation to 40% rated load. They have higher economic efficiency as compared to other fossil fired units.They will participate into depth peak-load regulation in order to make the network to be more flexible and adaptive after efficiency improvement retrofit are carried out.更多还原