Piecewise Model and Parameter Obtainment of Governor Actuator in Turbine
Joint Authors
Zhao, Jie
Wang, Li
Liu, Dichen
Wang, Jun
Source
Journal of Applied Mathematics
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-05
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The governor actuators in some heat-engine plants have nonlinear valves.
This nonlinearity of valves may lead to the inaccuracy of the opening and closing time constants calculated based on the whole segment fully open and fully close experimental test curves of the valve.
An improved mathematical model of the turbine governor actuator is proposed to reflect the nonlinearity of the valve, in which the main and auxiliary piecewise opening and closing time constants instead of the fixed oil motive opening and closing time constants are adopted to describe the characteristics of the actuator.
The main opening and closing time constants are obtained from the linear segments of the whole fully open and close curves.
The parameters of proportional integral derivative (PID) controller are identified based on the small disturbance experimental tests of the valve.
Then the auxiliary opening and closing time constants and the piecewise opening and closing valve points are determined by the fully open/close experimental tests.
Several testing functions are selected to compare genetic algorithm and particle swarm optimization algorithm (GA-PSO) with other basic intelligence algorithms.
The effectiveness of the piecewise linear model and its parameters are validated by practical power plant case studies.
American Psychological Association (APA)
Zhao, Jie& Wang, Li& Liu, Dichen& Wang, Jun. 2015. Piecewise Model and Parameter Obtainment of Governor Actuator in Turbine. Journal of Applied Mathematics،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1067121
Modern Language Association (MLA)
Zhao, Jie…[et al.]. Piecewise Model and Parameter Obtainment of Governor Actuator in Turbine. Journal of Applied Mathematics No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1067121
American Medical Association (AMA)
Zhao, Jie& Wang, Li& Liu, Dichen& Wang, Jun. Piecewise Model and Parameter Obtainment of Governor Actuator in Turbine. Journal of Applied Mathematics. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1067121
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1067121