光热与200MW燃煤机组互补发电设计与热经济性分析  

Design and Heat Economic Analysis of a Typical 200MW Optic-thermal and Coal-fired Complementary Electric System

作　　者：孙士恩 高新勇 赵明德 何晓红 

机构地区：[1]华电电力科学研究院,杭州310030

出　　处：《汽轮机技术》2017年第2期93-96,共4页Turbine Technology

摘　　要：以某200MW燃煤发电机组为基础,进行光热与燃煤机组互补发电的技术改造设计。通过对比分析不同方案的热经济指标,得出在10MWe光热互补发电工程的建设规模上,进行光热取代第二级回热抽汽系统的设计改造,可以使改造项目获得最佳的效率。通过对设计方案的全年热力性能计算分析,得出在保证进汽量不变的情况下,全年平均可新增机组发电负荷6.22MW;光热互补发电系统煤耗相比原机组下降了5.36g/(k W·h),每年可节约4470t标煤,具有很好的经济与社会效益。In this paper, a technical rebuild design of complementary generation system is carried out by combining the optic-thermal with coal-fired unit, which is based on a 200MW coal-fired power generating unit. According to the contrast analysis of heat economy under different schemes, this paper concluded that the peak efficiency of a 10MW complementary generation system can be obtained by replacing the second stage extraction system with optic-thermal. By analyzing the fun- year thermal performance of the designing scheme, this study indicates that 6.22 MW generating loads can be added annually with a steady steam flow. What＇s more, the coal consumption reduces by 5.36g/（kW ~ h） compared with the primary unit and 44.7 billion tons of standard coal can be saved in a whole year. Thus the optic-thermal/coal-fired unit complementary generation system has obvious economic and social benefit.

关 键 词：光热 互补发电 燃煤机组 改造设计 热经济性 

分 类 号：TK39[动力工程及工程热物理—热能工程]