Water-level Control System for Solar Water Heating Engineering based on PLC

2019 ◽  
Author(s):  
Xiaoming Cui ◽  
Zhiwei Kou ◽  
Yanjun Qiao
Keyword(s):  
Control System ◽  
Water Level ◽  
Level Control ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
Level Control System

Set-Point Function Compensation-Based Control for Steam Generator Water Level

2017 ◽  
Author(s):  
Dan Guo ◽  
Hong Xia
Keyword(s):  
Control System ◽  
Water Level ◽  
Steam Generator ◽  
Transient Performance ◽  
Level Control ◽  
Point Function ◽  
Inverse Control ◽  
Set Point ◽  
Level Control System ◽  
Power Adjustment

Steam generator (SG) water level system is a highly complex nonlinear time-varying system. It is complicated at low power levels due to shrink and swell phenomena which must be considered for plant safety and availability. To improve the transient performance of the SG level subject to power adjustments, an innovative set-point function method is put forward in this paper. The set-point functions based on the inverse-control theory and the swell and shrink effect which generate a desirable reference input to the widespread cascade Proportional Integral Derivative (PID) controller of the level control system respectively. The set-point function can apply appropriate control to the feed-water flow rate duly depended on the pivotal time between the power adjustment decision and the real start time of adjustment. Finally, comparative simulation is carried out under the same condition of power adjustment. The simulation results demonstrate that the water level control system added set-point functions can restrain the disturbance and improve the transient performance effectively. The method added the Inverse Control-Based Set-Point (ICSP) function can achieve better control performances than the swell-based set-point (SBSP) function.

Computerized Water Level Control System for System Generator of Qinshan Nuclear Power Plant

1997 ◽  
Vol 30 (17) ◽  
pp. 155-160
Author(s):  
Wen-peng Lang ◽  
M. Tahir Khaleeq ◽  
David Guosen He ◽  
Weiqing Zhao
Keyword(s):  
Control System ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Water Level ◽  
Nuclear Power ◽  
Level Control ◽  
System Generator ◽  
Level Control System
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