350 MW超临界机组旋转隔板与热再管道抽汽供热的经济性分析及对比  

Analysis and Comparison on Economy of Extracting Steam Heat-supply with Rotating Board and from Hot Reheat Piping in a 350 MW Supercritical Unit

作　　者：黄新长 Huang Xinchang(Guoneng Nanjing Electric Power Test&Research Co.,Ltd.,Nanjing 210023,China)

机构地区：[1]国能南京电力试验研究有限公司,南京210023

出　　处：《发电设备》2023年第2期89-93,共5页Power Equipment

基　　金：国家能源集团科学技术研究院有限公司科技项目(DY2022Y01)。

摘　　要：为分析某350 MW超临界抽汽式供热机组在不同工况下的运行经济性,以实际运行数据为基础,建立热平衡计算方法,对机组采用旋转隔板抽汽供热和热再管道抽汽供热的经济性进行计算和对比。结果表明:旋转隔板的投运会降低实际运行过程的中压缸效率,在供热量不变的情况下,随着负荷的降低,旋转隔板抽汽供热和热再管道抽汽供热的收益都会增加,但增加的幅度不同。To analyze the operation economy of a 350 MW supercritical unit with extracting steam heat-supply under different conditions,a heat balance calculation method was established based on the actual operation data,and a calculation and comparison was conducted on the economy of the extracting steam heat-supply with rotating board and from hot reheat piping.Results show that,the efficiency the medium-pressure cylinder is reduced with the commissioning of the rotating board,and both of the benefit of above two heat-supply methods can be improved with different increase ranges under the same heat-supply condition.

关 键 词：超临界机组 旋转隔板 再热蒸汽 供热 经济性 

分 类 号：TM621.4[电气工程—电力系统及自动化]