Hybrid method for control of voltage regulation applied in micro hydro power station

Tischer, Celso Becker; Posser, Fabio C.; Scherer, Lucas Giuliani; Franchi, Claiton Moro; Camargo, Robinson Figueiredo de

doi:10.1109/iecon.2012.6388582

Cited by 6 publications

(5 citation statements)

References 19 publications

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“…Many different turbine models are used for the modeling of hydraulic turbines. In the literature, several models allowing for a comprehensive investigation of fluid mechanics have been studied and developed, such as linear and nonlinear models, nonlinear models with progressive wave theory, and nonlinear models with progressive wave theory and surge tank [2][3][4][5][6][7][8][9][10][11][12][13][14][20][21][22][23][24][25][26][27][28]. The motion of the water in the penstock, its inertia and compressibility when it hits the turbine blades, and the elastic structure of the penstock naturally cause excessive water fluctuations.…”

Section: Methodsmentioning

confidence: 99%

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A new approach to the development of a nonlinear model for micro-Pelton turbines

Özdemir¹,

Orhan²

2015

Turk J Elec Eng & Comp Sci

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Abstract:In this study, a new approach that is closer to the real turbine without abandoning the advantages of nonlinear modeling simplicity compromising the simplicity of the nonlinear model is proposed. The purpose of the study is to contribute to making theoretical studies of microhydroelectric power plants (MHPPs) more realistic. Studies on their control, especially frequency control, have increased with the expansion of grid-connected power plants. However, some problems have occurred when converting simulation studies of the frequency control to practical studies. The reasons for these problems are that the systems cannot be modeled completely. In this study, first, the nonlinear model equations of a Pelton turbine are primarily constituted. The efficiency curve of the turbine is then obtained experimentally and added to the nonlinear model. The simulation results are compared with the data obtained from the prototype MHPP with a Pelton turbine developed in the laboratory. Finally, it is seen that the proposed method is successful. Thus, with the help of the proposed method, theoretical studies that researchers do can be easily converted into practical applications.

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Section: Methodsmentioning

confidence: 99%

“…The general structures of large-scale HPPs and MHPPs are basically the same. Therefore, previous studies employed models of large-scale HPPs in the modeling of MHPPs [2][3][4][5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

A new approach to the development of a nonlinear model for micro-Pelton turbines

Özdemir¹,

Orhan²

2015

Turk J Elec Eng & Comp Sci

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“…In [14] these two methods were applied together in a hybrid system of voltage regulation. It was proposed the use of capacitor bank plus STATCOM in parallel with SEIG in a three-phase three-wire system.…”

Section: Introductionmentioning

confidence: 99%

“…This paper proposes the expansion of the topology presented in [14] for a three-phase four-wire system, which allows the connection of three-phase or even single-phase loads, with the advantages of the hybrid topology. To accomplish that the capacitor bank is connected in star way plus a four legs STATCOM, both connected in parallel to AC voltage bar.…”

Section: Introductionmentioning

confidence: 99%

Hybrid topology for voltage regulation applied in three-phase four-wire micro hydro power station

Scherer

Tischer

Posser

et al. 2013

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

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This paper deals with the development of a new hybrid topology for voltage regulation in micro hydro power station using selfexcited induction generation applied in three-phase four-wire systems. The proposed topology is a combination of a three-phase four legs static synchronous compensator (STATCOM) and capacitor banks connected in parallel to the AC voltage bar. It is considered a three wires generator with no accessible neutral point being the neutral terminal for the load created through the neutral terminal of the excitation capacitor and the controller, which provides the choice to connect the loads either star or delta configurations. A control algorithm and a project for the variable capacitors are proposed based on the specifications of the STATCOM. The proposed generating system is modeled and simulated in MATLAB. Simulation results and preliminary experimental results are presented to demonstrate the performance of the proposed new hybrid method for the voltage regulation of the self-excited induction generator as well as to demonstrate the capability of an isolated generating system for feeding three-phase balanced loads.

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“…This paper proposes a voltage and frequency regulation system for induction generator based systems. The voltage regulation considers the hybrid topology developed in [8], which employs SVC and DSTATCOM in association. The hybrid topology of the voltage regulation is represented through a simplified diagram shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Voltage and frequency regulation of induction generator based system applying proportional-resonant controller

Tischer

Scherer

Camargo

2015

2015 IEEE 13th Brazilian Power Electronics Conference and 1st Southern Power Electronics Conference (COBEP/SPEC)

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This paper deals with a system control for voltage and frequency regulation in stand-alone generation systems based on self-excited induction generators (SEIG). A three-wire hybrid topology composed by switchable capacitor banks and distribution static compensator (DSTATCOM) is considered. The DSTATCOM is controlled by proportional-resonantderivative (PRD) controllers in association to proportional-integral (PI) controllers in order to compensate the system reactive power, balance induction generator (IG) currents and compensate harmonic currents. An electronic load controller connected to the three-phase bus guarantee the frequency regulation by the control of active power. Experimental results are presented to demonstrate its performance.

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Hybrid method for control of voltage regulation applied in micro hydro power station

Cited by 6 publications

References 19 publications

A new approach to the development of a nonlinear model for micro-Pelton turbines

A new approach to the development of a nonlinear model for micro-Pelton turbines

Hybrid topology for voltage regulation applied in three-phase four-wire micro hydro power station

Voltage and frequency regulation of induction generator based system applying proportional-resonant controller

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