摘要
Abstract
Led by the goal of"double carbon",China is building a new type of power system with new energy as the main body,but the fluctuation and intermittency of new energy brings the problem of balance of power supply and demand in different time periods.Clean and efficient coal power as the"ballast stone"of energy transformation,project economics is crucial,coal power host as the largest part of the project investment,but also the most sensitive factors of project economics,coal power host selection not only affects the project cost,but also affects the safety and economic operation of the operating period.Therefore,this paper from the construction investment(cost),carbon emissions and coal consumption and other aspects of coal power host selection for comprehensive benefit analysis,to three actual engineering cases as an example of host selection reasonableness analysis,the results show that:when the coal power three host price difference up to 18,000,000 yuan,coal power host selection of critical use of a small number of 4,500 hours,the critical standard coal price of 750 yuan/t,high-efficiency primary and secondary reheat The comprehensive benefits of the programme are basically equal;if better than the above conditions,the secondary reheat unit has better economic,environmental and social benefits.关键词
一次再热/二次再热/主机选型/综合效益Key words
primary reheat/secondary reheat/mainframe selection/combined benefits分类
能源科技
