变频调速在火电厂低压加热器疏水水位控制系统中的应用  

Application of Frequency Control of Speed in Drain Water Level Control System of Low Pressure Heater in Thermal Power Plant

作　　者：刘星桥[1] 

机构地区：[1]江苏理工大学电气系,江苏镇江212013

出　　处：《中国电力》1999年第9期66-68,共3页Electric Power

摘　　要：介绍利用变频器对火电厂低压加热器疏水泵系统进行改造方案，包括系统主电路、可编程序控制器接口资源分配及软件流程等，对改造后的系统特点、经济效益进行分析，指出该改造方案降低了煤耗、节省了电能，并可在１２５ 、２００ 、３００ Ｍ Ｗ 发电机组低压加热器上推广应用。This paper introduces the retrofit scheme of drain pump system of low pressure heater in thermal power plant using frequency changer,including main electric circuit of system,interface resources distribution of programmable controller and software flow chart etc.,analyzes the system features and economic benefit after retrofit,indicates that this retrofit scheme results in reduction of coal consumption and electric energy saving,may be applied and disseminated in low pressure heaters of 125,200,300 MW generating units.

关 键 词：低压加热器 疏水泵 变频调速 水位控制 火电厂 

分 类 号：TM621.3[电气工程—电力系统及自动化]