Based on the characteristics of the heating demand and power grid peak shaving demand of a certain supercritical 350 MW coal-fired power unit,this paper analyzes the heating capacity and economy of using different heating flexibility transformation technology routes.Compared with the hot water storage and electric boiler heating transformation schemes,this unit is more suitable for using the high and low bypass combined heating scheme of the steam turbine.After the transformation,the maximum heating capacity of the unit can be increased by 120 MW,and the deep peak shaving capacity can be increased by 66 MW,the investment payback period for renovation projects is about 1.5 years.This article can provide practical reference for the flexibility transformation of heating for similar units.
关键词
煤电机组/供热改造/灵活性/高低旁路
Key words
coal-fired power unit/heating renovation/flexibility/high and low bypass
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