【作者】 刘吉臻； 胡勇； 曾德良； 彭灿；

【Author】 HU Yong~(1,2),LIU Ji-zhen~1,ZENG De-liang~1,PENG Can~2 (1.tate Key Laboratory of Alternate Power System with Renewable Energy Source North China Electric Power University,Xi’an 710049,Beijing 102206;2.Control Theory and Control Engineering North China Electric Power University,Beijing 102206)

【机构】 新能源电力系统国家重点实验室华北电力大学； 控制与计算机工程学院华北电力大学；

【摘要】 随着电网负荷峰谷差逐年增大,我国大容量火电机组不得不参与到电网调峰中,致使机组偏离原设计工况运行。在网调给来的负荷指令下,主蒸汽压力该如何取值来确保机组的循环热效率最高。传统的压力优化方法中,并不能保证机组在定负荷下得到一个最优压力。本文结合汽轮机变工况计算、调节级变工况计算、热力系统矩阵方程等理论,提出一种顺序寻优迭代方法,可以很好的解决定负荷下压力的优化问题,并得出不同负荷下火电机组的最优压力运行值。更多还原

【Abstract】 As the large change of the grid load,the large capacity units of our country have to change the load in order to meet the gird need.When a thermal power plant receive a given load instruction from the grid,how to set a optimal steam pressure to maintain the high efficiency.In the past optimization methods,it is hard to maintain the given load when calculating the optimal pressure.In this article,in combination with the theory of variable condition of turbine,calculation of governing stage and the matrix equation of thermal system,a optimation method was put forwad and a optimal solution was got in a given load.更多还原