A weighted algorithm of fuzzy logic strategy on water level control of steam generator

2002 ◽  
Author(s):  
Xiangjie Liu ◽  
Tianyou Chai
Keyword(s):  
Fuzzy Logic ◽  
Water Level ◽  
Steam Generator ◽  
Level Control ◽  
Weighted Algorithm

Research on Fuzzy Control System of the Water Level for Steam Generator

2011 ◽  
Vol 383-390 ◽  
pp. 4184-4188
Author(s):  
Yong Sheng Zhang ◽  
Yun Yi Ma
Keyword(s):  
Fuzzy Logic ◽  
Control System ◽  
Fuzzy Control ◽  
Water Level ◽  
Steam Generator ◽  
Control Method ◽  
Effective Control ◽  
Level Control ◽  
Time Lagged

In order to improve the control quality of the water level for steam generator, a fuzzy level controller for steam generator is designed based on the fuzzy logic principle. The fuzzy logic toolbox and Simulink module of Matlab software are used for the modeling of the water level control system of steam generator. The operating condition of reducing load is calculated. Simulation result shows that the fuzzy control has such virtues as smaller overshoot, shorter regulating time and stronger robustness than the conventional three-element PID control. Fuzzy control is especially effective for nonlinear system like steam generator with multivariable, large time lagged and strong coupling. It is a very effective control method with widely application prospect.

Fuzzy Logic Controller Architecture for Water Level Control in Nuclear Power Plant Steam Generator (SG) Using ANFIS Training Method

2002 ◽  
Author(s):  
Naser Vosoughi ◽  
Zahra Naseri
Keyword(s):  
Fuzzy Logic ◽  
Power Plant ◽  
Water Level ◽  
Steam Generator ◽  
Nuclear Power ◽  
Fuzzy Logic Controller ◽  
Training Method ◽  
Input Output ◽  
Level Control ◽  
Single Output

Since suitable control of water level can greatly enhance the operation of a power station, a Fuzzy logic controller architecture is applied to show desired control of the water level in a Nuclear steam generator. With regard to the physics of the system, it is shown that two inputs, a single output and the least number of rules ( 9 rules ) are considered for a controller, and the ANFIS training method is employed to model functions in a controlled system. By using ANFIS training method, initial member functions will be trained and appropriate functions are generated to control water level inside the steam generators while using the stated rules. The proposed architecture can construct an input – output mapping based on both human knowledge (in from of Fuzzy if – then rules) and stipulated input – output data. In this paper with a simple test it has been shown that the architecture fuzzy logic controller has a reasonable response to one step input at a constant power. Through computer simulation, it is found that Fuzzy logic controller is suitable, especially for the water level deviation and abrupt steam flow disturbances that are typical in the existing power plant. /3/, /6/

scholarly journals STEAM GENERATOR WATER LEVEL CONTROL

1964 ◽  
Author(s):  
A. N. Nahavandi ◽  
A. Batenburg
Keyword(s):  
Water Level ◽  
Steam Generator ◽  
Level Control

Water Level Control of Steam Generator in Nuclear Power Plant Based on Intelligent MFAC-PID

2021 ◽  
Author(s):  
Yonglu Du ◽  
Haotian Li ◽  
Minrui Fei ◽  
Ling Wang ◽  
Pinggai Zhang ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Water Level ◽  
Steam Generator ◽  
Nuclear Power ◽  
Level Control

A study on water level control of PWR steam generator at low power and the self-tuning of its fuzzy controller

1995 ◽  
Vol 74 (1) ◽  
pp. 43-51 ◽  
Author(s):  
Nanju Na ◽  
Keechoon Kwon ◽  
Changshik Ham ◽  
Zeungnam Bien
Keyword(s):  
Low Power ◽  
Water Level ◽  
Steam Generator ◽  
Fuzzy Controller ◽  
The Self ◽  
Level Control ◽  
Self Tuning

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.

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