摘要
空冷机组给水系统设置液偶调速电动给水泵,机组常年低负荷运行时,液偶调速效率下降较大,机组运行的经济性较差。为降低机组实际运行时的能耗,对电动给水泵实行行星齿轮与变频调速改造方案分析,得出行星齿轮方案优于变频调速方案。
The feedwater system of air-cooled units are equipped with hydraulic coupling speed regulation motor driven feed water pumps.But hydraulic coupling speed regulation efficiency drops significantly during the low load operation all year round.This leads to the units economical deterioration.In order to reduce the energy consumption during the actual operation load of the units,two renovation schemes are analyzed,one scheme is to take the planetary gear speed regulation and the other is the frequency conversion speed regulation.It is concluded that the planetary gear scheme is superior to the frequency conversion speed regulation scheme.
作者
郑立国
韩泓池
ZHENG Li-guo;HAN Hong-chi(PowerChina Hebei Electric Power Design&Research Institute Co.,Ltd.,Shijiazhuang 050031,China)
出处
《电力勘测设计》
2020年第7期44-46,共3页
Electric Power Survey & Design
关键词
空冷机组
电动给水泵
液偶调速
行星齿轮
变频调速
air-cooled units
motor driven feed water pumps
hydraulic coupling speed regulation
planetary gear
frequency control
