1000MW燃煤机组的热经济学优化

Thermoeconomic Optimization of a 1000 MW Coal-Fired Unit

为了降低燃煤电厂的能量费用和非能费用,提高效率降低成本,本文以1000 MW燃煤机组为研究对象,在热经济学理论的基础上,以系统单位热经济学成本作为目标函数,用Matlab计算工具对系统进行优化。计算结果表明,需要增加或改进设备的技术性能来提高其(?)效率,进而可降低电能生产的成本;并发现锅炉当前的(?)效率接近最优状态;而汽轮机组的情况稍差,可以通过技术改进来提高其效率。

In order to decrease the operation cost in power plants,a 1000 MW coal-fired power plant is studied as the research objective,and an evaluation model about unit thermoeconomic cost is built based on the thermoeconomic theory.By using the Matlab calculation tool,the thermoeconomic optimization of the energy system about the plant is presented.The results show that it is necessary to update the correlated equipment to increase its exergetic efficiency in the design of the entry unit.Moreover,the exergetic efficiency of the boiler is close to the optimum value,as for the steam turbine,its efficiency can be increased with the technical improvement.