摘要
以某600MW火电机组为例进行计算,定量分析了增加一级回热抽汽对发电标准煤耗率的影响。研究表明,不同位置加一级回热抽汽对机组经济性影响程度不同,当机组在100%THA、75%THA滑压和50%THA滑压工况运行时,新增一级回热抽汽均应加在低压缸第4级级前,此时机组经济性最好,发电标准煤耗率分别降低了0.69g/(k W·h)、0.67 g/(k W·h)和0.67g/(k W·h)。
Influence of adding a stage of regenerative extraction steam on standard coal consumption rate of power generation was analyzed quantitatively by a 600 MW thermal power unit which was taken as an example. The studies showed that economy of standard coal consumption rate of power generation was influenced differently on the different places the new extraction adder at, when the unit was operating at 100% THA, 75% THA and 50% THA, the economy of turbine-generator unit was the best when the extraction was added before the 4nd pressure-stage of low pressure cylinder of turbine, and the standard coal consumption rate of power generation was reduced by 0.69g/（kW. h）, 0.67g/（kW. h）, 0.67g/（kW.h） respectively.
出处
《电站系统工程》
2017年第4期52-54,共3页
Power System Engineering
关键词
火电机组
回热抽汽
经济性
thermal power units
regenerative extraction steam
economy
