一种火电厂磨煤机出力优化算法研究  

Study on One Output Optimal Computation for Coal Mill in Thermal Power Plant

作　　者：何珏[1] 方源[2] 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072 [2]武汉大学自动化系,湖北武汉430072

出　　处：《广东电力》2013年第4期8-12,共5页Guangdong Electric Power

基　　金：国家自然科学基金资助项目(61170024);中国博士后科学基金资助项目(2011M501234)

摘　　要：针对超超临界机组频繁变负荷情况下磨煤机的出力变化问题,根据磨煤机特性约束条件,提出了一种结合改进的粒子群(particle swarm optimization,PSO)算法的磨煤机出力优化数学模型,解决PSO算法容易过早收敛和陷入局部最优的问题。计算机仿真结果显示,所得机启停组合方式基本能满足机组运行对磨煤机出力的要求,大大降低了磨煤机低出力情况下的运行能耗,提高了磨煤机的效率,降低厂用电电耗。Aiming at output change of the coal mill under the condition of frequent varying load of ultra supercritical unit and according to constraint condition of characteristic of the coal mill , this paper proposes a kind of output optimal mathemati- cal model combining with improved particle swarm optimization for the coal mill which may solve problems of premature convergence and partial optimization of PSO algorithm. The simulation result shows that this combination way of start-up and shut-down can fundamentally satisfy requirements for output of the coal mill, greatly reduce operational energy con- sumption with low output, promote efficiency of the coal mill and reduce auxiliary power consumption.

关 键 词：磨煤机 粒子群算法 快速启停 

分 类 号：TK223.25[动力工程及工程热物理—动力机械及工程] TP273.1[自动化与计算机技术—检测技术与自动化装置]