High-Order Modeling of Hydraulic Power Plant in Islanded Power Network

Nicolet, Christophe; Greiveldinger, Bob; Herou, J.-J.; Kawkabani, B.; Allenbach, P.; Simond, J.-J.; Avellan, François

doi:10.1109/tpwrs.2007.907348

Cited by 90 publications

(61 citation statements)

References 11 publications

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“…This modeling approach is also extended to all electrical components such as transmission lines, transformers, synchronous machines, etc. Finally, models of all those components are implemented in the EPFL software SIMSEN, developed for the simulation of the dynamic behavior of hydroelectric power plants [5].…”

Section: Modeling Of Hydraulic Power Plantmentioning

confidence: 99%

Influence of the Hydraulic System Layout on the Stability of a Mixed Islanded Power Network

Landry

Nicolet²,

Giacomini

et al. 2013

Advances in Hydroinformatics

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Section: Modeling Of Hydraulic Power Plantmentioning

confidence: 99%

Influence of the Hydraulic System Layout on the Stability of a Mixed Islanded Power Network

Landry

Nicolet²,

Giacomini

et al. 2013

Advances in Hydroinformatics

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“…Based on this approach, other hydraulic components models such as pipes, valves, surge tanks and turbines are presented in [7] or [8]. The modeling of the hydaulic system enables taking into account water hammer, mass oscillation, and turbine characteristics effects.…”

Section: Modelingmentioning

confidence: 99%

“…The maximum head is 315m. The turbines are modeled using the turbine characteristics Qll = Qll (Nll) and Tll = Tll(Nll) where Nll, Qll and Tll are respectively the speed, discharge and torque factors, see [7]. The excitation system has a standard PID voltage regulator.…”

Section: Modelingmentioning

confidence: 99%

Stability study of a mixed islanded power network

Padoan¹,

Nicolet²,

Kawkabani

et al. 2010

2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-La)

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Abstract-This paper presents the modeling, simulation and analysis of the dynamic behavior of a mixed power network of 2.78 GW including hydro, thermal and wind power plants. The modeling of each power plant is described. The set of parameters of the turbine speed governor of the hydroelectric power plant is determined with a specific identification procedure to achieve stable operation for different cases such as interconnected, isolated or islanded operation. The analysis of the stability of the entire mixed islanded power plant is investigated through time domain simulations for different sets of controllers parameters and for different disturbances (load rejection and turbulent wind speed profile).

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“…The most common hydraulic components have been implemented such as pump-turbine, penstock, surge tank, gallery, valve, reservoir, etc. In order to get a common set of differential equations for both electrical and hydraulic parts, hydraulic models are based on the electrical analogy [12]. Therefore, dynamic behavior of a hydroelectric system, is given by a set of n first order nonlinear ordinary differential equations of the following form:…”

Section: General State Space Equationmentioning

confidence: 99%

Influence of the Francis Turbine location under vortex rope excitation on the Hydraulic System Stability

Alligné¹,

Nicolet²,

Allenbach³

et al. 2009

International Journal of Fluid Machinery and Systems

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Hydroelectric power plants are known for their ability to cover variations of the consumption in electrical power networks. In order to follow this changing demand, hydraulic machines are subject to off-design operation. In that case, the swirling flow leaving the runner of a Francis turbine may act under given conditions as an excitation source for the whole hydraulic system. In high load operating conditions, vortex rope behaves as an internal energy source which leads to the self excitation of the system. The aim of this paper is to identify the influence of the full load excitation source location with respect to the eigenmodes shapes on the system stability. For this, a new eigenanalysis tool, based on eigenvalues and eigenvectors computation of the nonlinear set of differential equations in SIMSEN, has been developed. First the modal analysis method and linearization of the set of the nonlinear differential equations are fully described. Then, nonlinear hydro-acoustic models of hydraulic components based on electrical equivalent schemes are presented and linearized. Finally, a hydro-acoustic SIMSEN model of a simple hydraulic power plant, is used to apply the modal analysis and to show the influence of the turbine location on system stability. Through this case study, it brings out that modeling of the pipe viscoelastic damping is decisive to find out stability limits and unstable eigenfrequencies.

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High-Order Modeling of Hydraulic Power Plant in Islanded Power Network

Cited by 90 publications

References 11 publications

Influence of the Hydraulic System Layout on the Stability of a Mixed Islanded Power Network

Influence of the Hydraulic System Layout on the Stability of a Mixed Islanded Power Network

Stability study of a mixed islanded power network

Influence of the Francis Turbine location under vortex rope excitation on the Hydraulic System Stability

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