300MW机组给水泵变频改造后控制策略优化  

Optimization on control strategy of feedwater pump for a 300MW unit after frequency transformation

作　　者：李军红[1] 吕平 冯江涛[1] 刘锁清[3] 丁建海 

机构地区：[1]山西大学自动化系,山西太原030013 [2]内蒙古乌斯太热电厂,内蒙古乌海750336 [3]山西大学动力系,山西太原030013 [4]晋能电力集团有限公司嘉节燃气热电分公司,山西太原030032

出　　处：《热力发电》2015年第10期119-123,共5页Thermal Power Generation

摘　　要：为了提高机组运行经济性,将内蒙古乌斯太热电厂1号300MW机组给水系统3台勺管调速电动给水泵中的2台改为一拖二变频调速给水泵,并对给水系统控制逻辑进行了优化,增加了变频控制功能,设置了给水泵故障状态下备用启动允许功能。应用结果表明,给水系统改造后不仅降低了耗电量,而且提高了机组运行经济性和安全性。In order to improve the economic efficiency of unit 1 in Wusitai Thermal Power Plant in Inner Mongolia,technical transformation on the feedwater system was carried out.Two of three scoop tube speed-regulating electricicty-driven feedwater pumps were changed into one-to-two frequency variable speed-regulating feedwater pumps.Moreover,the feedwater control logic was optimized,the frequency con-version control function was added,and a fault situation backup start permit function was set up.The appli-cation results show that,after the transformation,the electricity consumption of the feedwater system de-creased and the unit operation safety was also improved.

关 键 词：300 MW机组 给水泵 变频调速 给水流量 控制 

分 类 号：TK323[动力工程及工程热物理—热能工程]