热力发电2017，Vol.46Issue(8)：23-29,7.DOI:10.3969/j.issn.1002-3364.2017.08.023
超超临界二次再热机组热经济性及技术经济性分析
Thermoeconomic and techno-economic analysis on an ultra-supercritical unit with double-reheat cycle
摘要
Abstract
An ultra-supercritical 1000 MW double-reheat power plant is taken as an example to establish the thermal economic model and techno economic model. The effects of the load, main steam parameters and reheat steam parameters on thermal economy of the double-reheat unit are examined. Moreover, the influences of the operating hours, unit efficiency and fuel price on the cost of power generation are studied. The results show that, the thermal efficiency variation of the double-reheat unit caused by load change is larger than that of a single reheat unit. The effects of the main steam parameters on the thermal economy are negligible. Where as the reheat steam parameter considerably influences the thermal economy. In addition, the cost of power generation increases with the decreasing operation hours and unit efficiency. Furthermore, the cost of power generation for double-reheat unit is higher than that of a single reheat unit when the operating hours reduces under the condition of low efficiency. It means that the technology economy of double-reheat unit has a great advantage under condition with high flue prices.关键词
二次再热/超超临界/主蒸汽参数/再热蒸汽温度/热效率/煤耗/发电成本Key words
double-reheat/ultra-supercritical/main steam parameter/reheat steam temperature/thermal efficiency/coal consumption/cost of power generation分类
能源科技引用本文复制引用
刁美玲,唐春丽,朱信,邓磊,车得福..超超临界二次再热机组热经济性及技术经济性分析[J].热力发电,2017,46(8):23-29,7.基金项目
国家重点研发计划项目(2017YFB0602102) National Key Research and Development Program (2017YFB0602102) （2017YFB0602102）
