摘要
火电厂要节约一次能源的消耗,必须发展更高参数的大容量机组,超临界或者超超临界机组发电是取得发电更高热效率的最为现实的途径,而超超临界发电是一种前景更广阔的洁净煤发电技术。首先对外高桥电厂900MW机组作以简要的论述,包括对其蒸汽参数的选择加以横向对比,其次针对外高桥电厂启机阶段给水循环回路的特点建立控制模型,最后应用S imu link软件对建立模型进行数字仿真。仿真结果表明:疏水箱的最大允许流量、疏水箱压力以及汽水分离器的压力三参数是相辅相成,相互制约的;压力和流量等参数变化趋势也是合理的,对外高桥电厂机组启停有一定的指导意义。
Today＇ s power generation markets are characterized by rising energy consumption, volatile gas prices and stable coal prices. The ultra supereritical fossil power plant is an option for high-efficiency and low-emissions electricity generation. It is based on increased steam temperatures and pressures, beyond those traditionally employed for supereritical plants. This paper presents Wai Gao Qiao power plant simply on the ultra supercritical steam parameter and compared with different plants. In addition feed-water recirculation was simulated by Simulink software. Result showed that Max. Opening of control valves upstream feed-water tank and pressures in it and in leveling vessel mingled together. There were reasonable explanation for tendency of pressure and flow, respectively. Guided manipulation fairly and certainty.
出处
《汽轮机技术》
北大核心
2005年第6期421-422,480,共3页
Turbine Technology
关键词
超超临界
循环水
仿真
疏水箱
ultra supercritical
feed-water recirculation
simulation
feed-water tank
