scholarly journals A H∞ Robust control strategy of hydro turbine speed governor with surge tank

2021 ◽  
Vol 70 (11&12) ◽  
pp. 193
Author(s):  
Fannie Kong ◽  
Yan LI
Keyword(s):  
System Control ◽  
Surge Tank ◽  
System Parameters ◽  
Hydro Turbine ◽  
Load Disturbance ◽  
Speed Governor ◽  
Power Load ◽  
Speed Governor System ◽  
Turbine Speed ◽  
First Time

According to hydraulic subsystem specialty of hydro turbine speed governor system, the hydro turbine governor system control model with surge tank for hydraulic structure: reservoir-tunnel-surge tank-penstock-generator is established for the first time. The H double loop hydro turbine speed governor system robust controller is designed considering the character of hydraulic and power load disturbance. The system parameters and power load disturbance simulation results demonstrate that the controller can effectively restrain impact of system parameters and power load disturbance, keep output speed stable, possess nice robust performance, compared to traditional PID controller, which has more excellent regulating ability of speed and rejection load disturbance performance.

Parameter Identification of Steam Turbine Speed Governor System

2011 ◽  
Author(s):  
Tao Yang ◽  
Lei Tang ◽  
Yanghai Li ◽  
Wei Gao ◽  
Kun Wang ◽  
...  
Keyword(s):  
Power System ◽  
Parameter Identification ◽  
Steam Turbine ◽  
Data Preprocessing ◽  
Practical Significance ◽  
Static Test ◽  
Nonlinear Part ◽  
Speed Governor ◽  
Speed Governor System ◽  
Turbine Speed

The dynamic characteristics of the steam turbine speed governor system is one of the major factor that influence the security of the power system. It has important practical significance for the security of the power system to establish the detailed dynamic model of the steam turbine speed governor system through parameter identification. This paper starts from the actual needs of the modeling of steam turbine speed governor system, several key issues such as field test of the speed control system, data preprocessing, parameter identification and simulation verification are researched, the solution of the key problems in the field static test and dynamic disturbance test is summarized, a variety of data preprocessing algorithms and parameter identification algorithms are achieved, and a new method for the simulation verification is proposed. On this basis, software based on MATLAB for the parameter identification of the steam turbine governor system is developed, which can perform the data preprocessing, parameter identification and simulation verification. The software offers a variety of parameter identification method to identify the linear and nonlinear part of the system model quickly and efficiently, and provides detailed qualitative and quantitative method for the evaluation of the simulation verification. The parameter identification results of steam turbine governor system of a power plant show that the software is user friendly and feature rich, and also show that it can complete parameter identification of steam turbine speed governor system intelligently and precisely.

scholarly journals Optimal Control Techniques in Applicable Values of Turbine Speed Governor Regulation

2015 ◽  
Vol 2 (8) ◽  
pp. 9-20
Author(s):  
Youssef A. Mobarak ◽  
Deraz S. A ◽  
M. El-Shahat Dessouki ◽  
Almazmomi R
Keyword(s):  
Optimal Control ◽  
Control Techniques ◽  
Speed Governor ◽  
Turbine Speed

A numerical algorithm based on scale-3 Haar wavelets for fractional advection dispersion equation

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sapna Pandit ◽  
R.C. Mittal
Keyword(s):  
Haar Wavelet ◽  
Haar Wavelets ◽  
System Control ◽  
Partial Differential ◽  
Content Type ◽  
Advection Dispersion ◽  
Novel Approach ◽  
Gauss Elimination ◽  
Time Variables ◽  
First Time

Purpose This paper aims to propose a novel approach based on uniform scale-3 Haar wavelets for unsteady state space fractional advection-dispersion partial differential equation which arises in complex network, fluid dynamics in porous media, biology, chemistry and biochemistry, electrode – electrolyte polarization, finance, system control, etc. Design/methodology/approach Scale-3 Haar wavelets are used to approximate the space and time variables. Scale-3 Haar wavelets converts the problems into linear system. After that Gauss elimination is used to find the wavelet coefficients. Findings A novel algorithm based on Haar wavelet for two-dimensional fractional partial differential equations is established. Error estimation has been derived by use of property of compactly supported orthonormality. The correctness and effectiveness of the theoretical arguments by numerical tests are confirmed. Originality/value Scale-3 Haar wavelets are used first time for these types of problems. Second, error analysis in new work in this direction.

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