【摘要】 大型机组FCB(快速甩负荷带厂用电运行)试验工况下,凝汽器水位剧烈变化会威胁到机组的安全。针对这一问题,以某1 000MW机组75%负荷FCB试验和50%负荷FCB试验数据为依据,基于MATLAB/Simulink仿真平台建立了凝汽器仿真模型,仿真分析了凝汽器在FCB工况时水位变化特性。在此基础上,对100%负荷FCB工况下凝汽器水位进行了预测,通过之后的FCB试验验证了预测结果。更多还原

【Abstract】 The unit condenser water level changes dramatically under FCB( Fast Cut Back) condition,threatening the safety of the condenser. To solve this problem,the changing mechanism of the condenser level is simulated with MATLAB /Simulink of a 1 000 MW ultra supercritical unit based on the experiment data of 75% FCB test and 50% FCB test. The condenser water level under the condition of 100% FCB test is forecasted and proved to be right with the experiment data.更多还原