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中文摘要：
利用Aspen Plus建立了600Mw超临界汽轮机系统的模型，在此基础上构建了利用太阳能集热场生产蒸汽取代某一段高压加热器抽汽的协同燃煤发电模型，并模拟了4种不同负荷工况下机组的协同发电运行情况，分析了3种太阳能协同方案在变工况下的能耗情况及汽轮机通流量等参数的变化规律．结果表明：所构建的太阳能协同发电方案可在保证汽轮机蒸汽质量流量变化较小的情况下，显著降低600MW燃煤机组的发电煤耗率，3种协同发电方案均适合对在运火电机组进行改造，是实现火电机纽节能减排和太阳能稳定发电的有效途径之一．
英文摘要：
Based on the 600 MW supercritical steam turbine model set up on Aspen Plus platform, a model of solar-coal hybrid power generation system was established, which uses the steam from solar collector instead of extraction from high-pressure heater. Operation status of the solar-coal hybrid system was simula- ted under four different loading conditions, while the variation law of both the energy consumption and turbine steam flow was analyzed for three schemes of solar-coal hybrid systems under off-design working conditions. Results show that the proposed solar-coal power generation system can significantly reduce the coal-consumption rate of 600 MW coal-fired power unit without obvious changes of the turbine steam flow. All the three schemes are applicable for retrofit of coal-fired power units in operation, which can serve as an effective way not only for energy saving and emission reduction of coal-fired power units, but also for stable operation of solar power generation systems.
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