摘要
针对大亚湾核电站电动主给水泵调速系统在手动控制模式切换至自动控制模式时勺管动作不平稳的问题,结合该调速系统的功能、接口和供电要求,对控制方案进行了改进。由可编程逻辑控制器代替定位器,并将自动控制器中的勺管实际位置信号反馈至手动控制器;取消反转探测器,采用单探头测速;在原冗余供电的基础上加装不间断电源。新控制方案能解决手动控制模式切换至自动控制模式过程中泵转速变化过快的问题。
In allusion to unsteady action of scoop tube of speed regulating system of the motor-driven feed water pump in Daya Bay nuclear power plant when switching manual control mode to auto control mode for the speed regulating system,this paper introduces improvement of the control scheme combining requirements for functions,interfaces and power supply of the system.Programmable logic controller was taken to replace the locator and the signal of actual position of the scoop tube was fed back to the manual controller.Reversal detector was cancelled while single transducer was used for speed measuring,and uninterrupted power supply was installed on the basis of former redundant power supply.The new control scheme was able to solve problem of fast change of rotate speed of the pump in the process of switching manual control mode to auto control mode.
出处
《广东电力》
2015年第3期17-19,34,共4页
Guangdong Electric Power
关键词
电动主给水泵调速系统
液力耦合器
可编程逻辑控制器
自动模式
手动模式
speed regulating system of motor-driven feed water pump
fluid coupling
programmable logic controller
auto mode
manual mode
