Dynamic Response of a Hydroelectric Plant

Oldenburger, Rufus; Donelson, John

doi:10.1109/aieepas.1962.4501341

Cited by 40 publications

(20 citation statements)

References 1 publication

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“…According to [8], the head changes between section I and section II, section II and section III in Fig.1 can be expressed as following, respectively:…”

Section: Hydraulic Systemmentioning

confidence: 99%

“…According to [8], the coefficient of the second item on the right hand side of (4) is rewritten as following:…”

Section: Remarkmentioning

confidence: 99%

“…The dynamic of the penstock with elastic water hammer is calculated using the classical equations derived by Oldenburger [8]. However, such method increases the number of the differential equations, thus becomes more complex.…”

mentioning

confidence: 99%

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Nonlinear hydro turbine model having a surge tank

Zeng

Guo

Zhang

et al. 2013

Mathematical and Computer Modelling of Dynamical Systems

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This paper models a hydro turbine based on the dynamic description of the hydraulic system having a surge tank and elastic water hammer. The dynamic of the hydraulic system is transformed from transfer function form into the differential equation model in relative value. This model is then combined with the motion equation of the main servomotor to form the nonlinear model of the hydro turbine, in which the power of the hydro turbine is calculated using algebraic equation. A new control model is thus proposed in which the dynamic of the surge tank is taken as an additional input of control items. As such, the complex hydraulic system is decomposed into a classical one penstock and one machine model with an additional input control. Therefore, the order of the system is descended. As a result, the feasibility of the system is largely improved. The simulated results show that the additional input of the surge tank is effective and the proposed method is realizable.

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“…According to [8], the head changes between section I and section II, section II and section III in Fig.1 can be expressed as following, respectively:…”

Section: Hydraulic Systemmentioning

confidence: 99%

“…According to [8], the coefficient of the second item on the right hand side of (4) is rewritten as following:…”

Section: Remarkmentioning

confidence: 99%

See 1 more Smart Citation

Nonlinear hydro turbine model having a surge tank

Zeng

Guo

Zhang

et al. 2013

Mathematical and Computer Modelling of Dynamical Systems

View full text Add to dashboard Cite

show abstract

“…The averaged no-load flow and P t =0 are then added into the original data to compose new data group. The turbine power expression is obtained by using new data and polynomial of degree 3 …”

Section: Computation Of the Characteristic Parametersmentioning

confidence: 99%

“…In previous studies, there are two main model classes: one is the linearized model based on the transfer function of the hydraulic dynamic and another is the differential equation model with rigid water hammer. From the expression of the hydro turbine power output, the power model of the hydro turbine can be classified as linear model and nonlinear model [3,4,5,6]. Recently, several new methods and theory are developed to investigate the hydraulic dynamic and the turbine power output.…”

Section: Introductionmentioning

confidence: 99%

Reconstruction of the complete characteristics of the hydro turbine based on inner energy loss

et al. 2016

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Abstract:The power output characteristics of the hydro turbine is one of the core contents for transient calculation of the hydro turbine generating sets (HTGS). In particular, the hydro turbine operates far beyond the given parameters region during the load rejection transient. As such, obtaining the complete characteristics of the hydro turbine becomes one of the key issues in calculating the transient process. In this study, methods for calculating the energy losses are proposed by analyzing the general characteristics of the inner energy losses within the hydro turbine. Characteristic parameters in the hydro turbine power model are calculated from the synthetical characteristics of the model hydro turbine. The transient power model of the hydro turbine has been established and applied to calculate and reconstruct the complete characteristics of the hydro turbine. Furthermore, the relationship curve between the mechanical friction loss power and the rotation speed under different head can be established by combing the runaway curve with the proposed turbine power model. This relationship is applied to construct the complete characteristics of the mechanical friction loss. Combining the proposed two complete characteristics, the power model of the hydro turbine is suitable for simulation with a wide range of fluctuations as well as the load rejection transient. Details of the computational procedures are presented and demonstrated using a case study..

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A review on electromechanical equipment applicable to small hydropower plants

Mishra

Singal

Khatod

2012

Int. J. Energy Res.

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SUMMARY Small hydropower (SHP) projects are considered by the developers as these provide renewable source of energy and are environment friendly. The basic cost components of SHP scheme are broadly classified as civil works and electromechanical equipment. The most important components under the electromechanical equipment are turbine and generator. In the present paper, an attempt has been made to review the different types of technological models and transfer function developed to evaluate the performance of the electromechanical equipment of SHP projects. A review on the different types of control strategies developed by earlier investigators has also been presented. The present review attempts to cover the different types of design and analysis made on different types of turbines, generator and control equipment of SHP. Copyright © 2012 John Wiley & Sons, Ltd.

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Dynamic Response of a Hydroelectric Plant

Cited by 40 publications

References 1 publication

Nonlinear hydro turbine model having a surge tank

Nonlinear hydro turbine model having a surge tank

Reconstruction of the complete characteristics of the hydro turbine based on inner energy loss

A review on electromechanical equipment applicable to small hydropower plants

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