Stability studies of a mixed islanded power network with varspeed units using simplified models of the converters

Pannatier, Y.; Kawkabani, B.; Sari, Gokhan; Simond, J.-J.

doi:10.1109/ecce.2010.5617977

Cited by 8 publications

(8 citation statements)

References 9 publications

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“…These ones are due to the oscillation The modeling of the oscillating coordinates in Fig 2 (5) or (6) the stator and ation of the set fined by P mec0 , ns of the rotor.…”

Section: A Eigenvalues Analysis Methods Base Variables Applied On An mentioning

confidence: 99%

“…Variable speed pump-turbine units can significantly increase the stability of electrical power networks, and thus overcome this problem [1]- [5]. The study, modeling and analysis of the dynamic behavior of variable speed pump-turbine units have been presented and published in several papers in the last decade [6]- [15].…”

Section: K 12mentioning

confidence: 99%

“…The machine is initially operating at P méc =0. 5 [pu] while the external torque is reduced from 0.5 [pu] to 0 [pu] at t=0.5[s]. The rotational speed is then left to evolve freely to its equilibrium point, as illustrated in Fig.…”

Section: Induction Machine Modelmentioning

confidence: 99%

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Eigenvalues analysis applied to the stability study of a variable speed pump turbine unit

Han

Kawkabani

Simond

2012

2012 XXth International Conference on Electrical Machines

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Abstract-This paper presents an eigenvalues analysis method for an induction machine model based on phase variables a,b,c. This approach is validated by comparison with a d,q approach and applied to a variable speed pump-turbine unit using a simplified model of the converters. The proposed approach permits the study and analysis of the interaction between mechanical, electric and regulation parts of the system. The study, modeling and analysis of the dynamic behavior of variable speed pump-turbine units have been presented and published in several papers in the last decade [6]- [15]. The aim of this study is to develop an analytical approach based on the eigenvalues analysis method in order to facilitate the study of the interactions between the hydraulic, electric and regulation parts of a variable speed pump-turbine unit, and to identify the origin of eventual instabilities. IndexA similar method has been applied efficiently to a complete hydroelectric production site with a synchronous generator by using a, b, c phase variables instead of d-q components [16].The advantage of the extension of the eigenvalue analysis method to a, b, c phase variables instead of d-q components is mainly the possibility of the application of this method to any symmetrical or asymmetrical mode of operation of the machine without specific additional developments. Moreover, most of developed software packages dedicated to the numerical simulation of power systems [17]

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“…These ones are due to the oscillation The modeling of the oscillating coordinates in Fig 2 (5) or (6) the stator and ation of the set fined by P mec0 , ns of the rotor.…”

Section: A Eigenvalues Analysis Methods Base Variables Applied On An mentioning

confidence: 99%

Section: K 12mentioning

confidence: 99%

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Eigenvalues analysis applied to the stability study of a variable speed pump turbine unit

Han

Kawkabani

Simond

2012

2012 XXth International Conference on Electrical Machines

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“…Several studies addressing the modeling and analysis of variable speed pump-turbine units have been presented, either on the hydraulic part or on the electrical part [1]- [11].…”

Section: Introductionmentioning

confidence: 99%

Start-up of a varspeed group in pump mode, practical implementations and tests

Maendly

Hodder

Kawkabani

2016

2016 XXII International Conference on Electrical Machines (ICEM)

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--The present paper addresses the practical implementation in a test bench of different control strategies for the start-up of a varspeed group in pump mode. In varspeed groups using a double-fed induction machine supplied by back to back voltage source inverters (VSI), the possibility exists of using the rotor side VSI to start up the group. The current paper focuses on the start-up strategy and its implementation in a test bench of 3.3 kVA. After presenting the hardware composing the test bench, two different start-up strategies are detailed, which are the field oriented control and critical torque. Those two strategies are then implemented in practice, tested, measured and compared.Index Terms -varspeed group, start-up, variable speed drives, control systems, double-fed induction machine, AC-DC power converters, field oriented control.

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“…Due to the high volatility of wind power, electrical power networks particularly islanded ones, with high level of wind power penetration, may be subject to instabilities. Variable speed pump-turbine units can significantly increase the stability of electrical power networks, and thus overcome this problem [1]- [5]. Several variable speed power stations are planned in Europe for the next coming years.…”

mentioning

confidence: 99%

Optimization of the start-up time of a variable speed pump-turbine unit in pumping mode

Pannatier¹,

Kawkabani

Nicolet³

et al. 2012

2012 XXth International Conference on Electrical Machines

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Stability studies of a mixed islanded power network with varspeed units using simplified models of the converters

Cited by 8 publications

References 9 publications

Eigenvalues analysis applied to the stability study of a variable speed pump turbine unit

Eigenvalues analysis applied to the stability study of a variable speed pump turbine unit

Start-up of a varspeed group in pump mode, practical implementations and tests

Optimization of the start-up time of a variable speed pump-turbine unit in pumping mode

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