摘要
为了充分利用机组性能计算的结果,提出了经济性闭环控制的协调控制系统设计方法。该方法根据汽轮机变工况热力计算原理,在主蒸汽压力设定值发生改变时,对其影响的效率、因素如节流损失、汽轮机调节级内效率和给水泵耗功的变化情况进行了分析、计算。并在主蒸汽变化的±0.5 MPa范围内,寻找整体效率最高的点,作为该工况下的最佳压力设定值。将经济性分析指标引入协调系统闭环控制中,有效地利用了机组的经济性指标的计算结果,并提高了系统的经济性控制。最后对1台实际机组上进行了计算分析,验证了其可行性。
In order to make the most use of the results of economical performance, a new design of coordinated control system for boiler -turbine unit based on economic closed-loop control is given. This method considers the influence of throttle loss, the efficiency of regulation stage of turbine and the work of feed water pump, The optimum main stem pressure set point is obtained through computing the max value of total efficiency when the main steam pressure is changed by ± 0.5 MPa. Case studies with a practical 660 MW power plant indicate that the proposed method is effective and suitable for on-line application in power system.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2008年第4期57-61,共5页
Journal of North China Electric Power University：Natural Science Edition
基金
华北电力大学校内博士基金(200812009)
关键词
经济性
闭环控制
协调控制
economical performance
closed-loop control
coordinated control
