某660 MW纯凝机组抽汽供热改造的热经济性分析

Thermal Economic Analysis of Extraction Steam Heating Retrofit for 660 MW Condensing Unit

本文以某660MW凝汽式汽轮机组为研究对象,使用MATLAB工具和热平衡法对其抽汽供热改造方案进行了理论分析。同时,计算了压缸排汽抽汽供热工况、冷再热蒸汽抽汽供热工况、热再热蒸汽抽汽供热工况下机组的发电功率、热耗率、煤耗率等热经济性指标,并进行对比。

Taking a 660 MW condensing steam turbine unit as the research object,the authors used MATLAB tools and heat balance method to make a theoretical analysis of its steam extraction and heating transformation scheme.At the same time,the thermal economic indexes of the unit,such as the power generation,heat consumption rate and coal consumption rate,were calculated and compared under the conditions of the pressure cylinder exhaust steam extraction heating condition,the cold reheat steam extraction heating condition and the hot reheat steam extraction heating condition.