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为了优选设计水电站的主要参数,必须对若干方案的主要经济指标进行相互比较。在我国水能设计中现在广泛采用考虑时间因素的年费用最小作为动能经济比较的准则。除此之外,在个别情况下还有采用折算年计算支出法、效益费用比法等其他方法。作者建议对现行年费用法进行合理性简化,并举例加以说明。最后对各种计算方法之间的相互联系作了扼要的阐述。
In order to optimize the design of the main parameters of the hydropower station, the major economic indicators of several options must be compared with each other. In our country’s water energy design, the annual cost considering the time factor is now widely adopted as the criterion for economic comparison of kinetic energy. In addition, there are also other methods such as the calculation of expenditures for conversion year and benefit-cost ratio method under individual circumstances. The author proposes to rationalize the current annual fee method and give an example. Finally, it makes a brief exposition on the interrelationship between various calculation methods.