Nonlinear Steam Valve Adaptive Controller Design for the Power Systems

Jiang, Nan; Chen, Xiangyong; Liu, Ting; Liu, Bin; Jing, Yuanwei

doi:10.4236/ica.2011.21004

Cited by 15 publications

(14 citation statements)

References 5 publications

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“…Due to the influences of the controller equation (11), the closed-loop system under the new coordinates (e 1 , e 2 , e 3 ) iṡ e 1 = −c 1 e 1 + e 2 , e 2 = −e 1 − c 2 e 2 − ke 3 sin(x 1 + 0 ) +̃x 2 ,…”

Section: The Design Of Adaptive Backstepping Controllermentioning

confidence: 99%

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An improved adaptive backstepping approach on static var compensator controller of nonlinear power systems

Quan

Cai

et al. 2018

Adaptive Control & Signal

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The transient stability problem of a single-machine infinite-bus system with static var compensator is solved in this paper, where the static var compensator controller is designed by an improved backstepping method combining error compensation, adaptive backstepping control, and sliding mode variable structure control. Crucially, the error compensation term, which chooses in the step of virtual control by the adaptive backstepping method, is introduced to ensure that the system states are bounded, maintaining the nonlinearity of the power systems while also improving the speed of parameter identification. Meanwhile, the Lyapunov function is constituted step by step to achieve stability of the subsystem. In addition, a parameter updating law and a nonlinear control law are explicitly given to asymptotically stabilize the closed-loop system. Finally, a simulation is used to illustrate the effectiveness and the practicality of the proposed control approach. KEYWORDSadaptive backstepping, error compensation, single-machine infinite-bus system, sliding mode variable structure control, static var compensator 700

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Section: The Design Of Adaptive Backstepping Controllermentioning

confidence: 99%

“…Under the influences of the control input (11), the closed-loop error system (12) is asymptotically stable.…”

Section: The Design Of Adaptive Backstepping Controllermentioning

confidence: 99%

An improved adaptive backstepping approach on static var compensator controller of nonlinear power systems

Quan

Cai

et al. 2018

Adaptive Control & Signal

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“…Detailed modeling of each component and a suitable control strategy for large disturbances in power systems is presented in [6]. In [7,8], the nonlinear adaptive controllers and parameter updating laws for a single-machine-infinite-bus system with damping coefficient uncertainties in the turbine steam valve control are proposed. In this paper, the backstepping method combined with minimax theory is used to design the nonlinear disturbance attenuation controller for nonlinear power systems.…”

Section: Intrudctionmentioning

confidence: 99%

A comparison and simulation study of larger disturbance attenuation controllers for power system transient stability

Liu

Jiang

Jing

2012

2012 24th Chinese Control and Decision Conference (CCDC)

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This paper investigates and applies a novel large disturbance attenuation method to two kinds of nonlinear power system models. The proposed method is devised by linking the backstepping technique and minimax optimal control theory. The power system models are considered as subjecting to the influences of certain transient disturbances, such as mechanical power fluctuation and short circuit fault. Applicability of the scheme is illustrated via simulation; meanwhile, the control performances of the two models are analyzed and compared. The simulation results reveal that the proposed controller is strong robust and insensitive to the internal and external disturbances.

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“…The nonlinear robust controller designed by adaptive backstepping was discussed in [3]. Although the internal and external disturbances of the system were considered, disturbance was just binding scaling, and the bound properties of the control variable were not considered.…”

Section: Introductionmentioning

confidence: 99%

Coordinated Switching Control of the Excitation and Steam Valve System Based on State and Input Constraints

Jiang

Liu

et al. 2015

Mathematical Problems in Engineering

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A single unit infinite system of the excitation and steam valve control was proposed based on Barrier Lyapunov theory of restrictive log type. The input amplitude constraint of the steam valve control was considered, and the coordinated nonlinear backstepping controller was designed by switching mechanism. At the same time, the generator rotor effect was considered to be an external unknown large disturbance on the output system, and the conservativeness of the simple estimates for the upper and lower bounds and scaling disturbance was reduced by Minimax. The Minimax method also ensured that the output of the controller and the power angle were within the prescribed range and inhibited the system output effect of disturbance as much as possible. Finally, simulation results of the generator disturbance of mechanical power in the single unit infinite system show that the control scheme effectively improves the transient stability of the dynamic processes of power systems.

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Nonlinear Steam Valve Adaptive Controller Design for the Power Systems

Cited by 15 publications

References 5 publications

An improved adaptive backstepping approach on static var compensator controller of nonlinear power systems

An improved adaptive backstepping approach on static var compensator controller of nonlinear power systems

A comparison and simulation study of larger disturbance attenuation controllers for power system transient stability

Coordinated Switching Control of the Excitation and Steam Valve System Based on State and Input Constraints

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