装机方案对发电项目经济性的影响

Affection on Economy of Generation Project by Installation Program

对贵州某地区新建2×1 000 MW超超临界燃煤机组(方案1)或2×600 MW超临界燃煤机组(方案2)进行投资估算,以电价、煤价和总投资作为敏感性因素对2种方案进行经济评价与比较。得出结论:电价为影响投资内部收益率最敏感因素;电价、煤价或总投资变化,则2种方案在经济上呈现的优势或劣势将发生变化,大容量、高参数机组经济性好只对于一定的煤价和电价而言;在现有煤价和标杆电价下,方案1的投资内部收益率优于方案2。

This paper proceeds investment estimation for two newly established installation including 2 ×1 000 MW ultra-su- percritical cola-fired unit（ program 1） and 2× 600 MW supercritical coal-fired unit（ program 2） in one Guizhou district and compares these two programs in economic evaluation by taking power price, coal price and total investment as sensitive fac- tors. It draws a conclusion that power price is the most sensitive factor to affect investment internal rate of return; these two programs may change advantages or disadvantages in economy while power price , coal price or the total investment chan- ges; good economy of unit with large capacity and high parameter is only for certain coal price and power price; under exist- ing coal price and power price benchmarking, the investment internal rate of return of program 1 is better than program 2.