给水泵变频控制系统  

Varible Frequency Control System of Feed Water Pump

作　　者：邬菲 

机构地区：[1]江西省电力试验研究院,南昌330006

出　　处：《自动化仪表》2004年第4期49-51,共3页Process Automation Instrumentation

摘　　要：采用PLC和变频器进行压力调节 ,将母管压力与给定压力的偏差经PID运算 ,通过可编程控制器调节变频器的输出 ,自动控制给水泵投入的台数和电机转速 ,实现闭环自动调节恒压供水。运行结果表明 ,该控制系统具有压力稳定。The pressure is regulated by using PLC and inverter, the deviation between pressure of header and setpoint is operated by PID algorithm, and the output of inverter is regulated by programmable controller, thus the number of feed water pumps in service and speed of the motors are controlled automatically to implement closed loop regulating constant pressure water supply. The result of operation shows that the control system features stable pressure, simple structure and reliable operation.

关 键 词：给水泵 可编程序控制器 变频调速 压力调节 PLC 异步电机 

分 类 号：TU991.62[建筑科学—市政工程] TM921.51[电气工程—电力电子与电力传动]