摘要
燃煤发电机组负荷率、环境温度和燃用煤种是影响供电煤耗的3个主要外部因素。讨论了负荷率对不同类型机组供电煤耗的影响,机组类型从125MW的超高压机组到目前最为先进的1000MW超超临界机组,给出了供电煤耗随负荷的变化曲线。研究发现,机组供电煤耗随负荷的变化特性主要由汽轮机热耗率和厂用电率决定;在相同负荷率下,负荷曲线对供电煤耗也有一定影响。
The three main factors affecting net coal consumption rate in fossil power plant are generator load, environment temperature and fired coal characteristics. The affects of generator load on coal consumption rate are discussed for the kinds of generator unit varying from 125 MW ultra-high-pressure units to 1000MW ultra-supercritical units, the curves of coal consumption rate with generator load are offered, which are mostly depended on turbine efficiency and electric power consumed by the unit, the power unit time load profiles also work on coal consumption rate.
出处
《电站系统工程》
北大核心
2008年第4期47-49,共3页
Power System Engineering
关键词
燃煤发电厂
锅炉
汽轮机
效率
供电煤耗
fossil power plant
boiler
turbine
efficiency
coal consumption rate of power supply
