基于LabVIEW的调速器运行模式优化研究  

Research on Optimization of Speed Governor Operation Mode Based on LabVIEW

作　　者：姚丽萍 杨建明[1] 凌晨 

机构地区：[1]东南大学能源与环境学院,江苏南京210096 [2]中国能源建设集团江苏省电力设计院有限公司,江苏南京211102

出　　处：《工业控制计算机》2021年第8期70-72,75,共4页Industrial Control Computer

摘　　要：超超临界一、二次再热机组采用双机回热系统可有效提高机组循环效率,但用非调整抽汽的回热汽轮机驱动给水泵,在机组低于额定负荷时有较大过剩出力,只有用发电机予以平衡才能保证回热系统正常运行。为协调变速给水泵与定速发电机转速不一致,采用基于伺服电机变频控制的行星齿轮差动调速器,建立了调速器传动数学模型,以1000MW超超临界机组为例,基于LabVIEW软件开发了回热抽汽给水泵汽轮机组仿真试验平台,研究了行星齿轮调速器的最优运行模式。Ultra-supercritical primary and secondary reheat units adopt dual-unit regenerative systems,which can effectively improve the cycle efficiency of the unit.However,when a non-adjusted extraction steam regenerative turbine is used to drive the feedwater pump,there will be a large excess output while the unit is below the rated load.Only by balancing the excess output with a generator can the regenerative system operate normally.To coordinate the inconsistency between the speed of the variable speed feed water pump and the fixed speed generator,a planetary gear differential governor based on the variable frequency control of the servo motor is used in this paper.The mathematical model of governor transmission is established.Taking 1000MW ultra-supercritical unit as an example,a simulation test platform for a regenerative extraction feedwater pump turbine unit is developed based on LabVIEW software,and the optimal operating mode of planetary gear governor is studied.

关 键 词：给水泵汽轮机 过剩出力 调速器 仿真试验 模式优化 

分 类 号：TM621[电气工程—电力系统及自动化]