A novel technique proposed for automatic control of small hydro power plants

Goyal, Himani; Bhatti, T. S.; Kothari, D.P.

doi:10.1504/ijgei.2005.007076

Cited by 12 publications

(7 citation statements)

References 7 publications

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“…The partial derivatives of torque ∂T/∂N and flow ∂q/∂N with respect to rotational speed, are usually considered to be negligible [5]. For deviations around rated speed and pressure head, the turbine coefficients are deduced by the differentiation of equations (1) and 2, [8].…”

Section: Linearized Turbine Modelmentioning

confidence: 99%

“…This in combination with more powerful computers and software allows the construction of virtual models and simulations of hydropower systems. Models and simulation of a plant can be used in various ways such as optimization of various components or sub-systems, off-line programming, test and verification or they may function as a learning platform to increase the knowledge and understanding of how the system works [1]. In 2014, G. Aggidis and A. Židonis [2], developed a fully automated approach for hydro turbine prototype testing manufactured by Gilbert Gilkes and Gordon Ltd.…”

Section: Introductionmentioning

confidence: 99%

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Francis Turbine Prototype Testing and Generation of Performance Curves

Shanab

El-Badawy

2017

Journal of Al-Azhar University Engineering Sector

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Hydroelectric power plant converts the hydraulic power in flowing water to mechanical energy. A key item of any hydro power plant is the governor. The control of the governor depends mainly on the performance curves of the turbine. Studies and measurements in the laboratory have given important information about the model and its characteristics and performance. This study concerns laboratory studies with focus on the characteristics of the Francis turbine model. The laboratory model considered in this study is a test rig set in the Fluid Mechanics laboratory at Mechanical Engineering Department manuf actured by Gilbert Gilkes and Gordon Ltd, representing a Francis turbine hydro power plant model. This manual test rig has been upgraded to control the measurements automatically. The variables measurement technology of the turbine are developed and implemented by using LabVIEW software interface. Performance test on the test rig of a Francis turbine has been carried out in the laboratory for various gate opening of the turbine. The numerical results for the test rig were implemented to get dedicated values of the six partial coefficients of the Francis Turbine test rig that used for control studies. These partial coefficients are compared with ideal model values.

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Section: Linearized Turbine Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Francis Turbine Prototype Testing and Generation of Performance Curves

Shanab

El-Badawy

2017

Journal of Al-Azhar University Engineering Sector

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“…Goyal et al [28] proposed a novel technique for automatic control of small hydro-power plants. In this paper, necessity for speed control, various functions of governors, types, speed regulation of micro-hydroelectric power plants, functional block diagrams of power generation and control systems, general models for speed-governing systems for hydro systems, conventional governors used, various block diagrams of a hydro turbine speed control system are discussed along with derivation of hydraulic turbine transfer function.…”

Section: Distributed Generation In Small Hydro-power Plantsmentioning

confidence: 99%

Analysis and evaluation of small hydropower plants: A bibliographical survey

Sachdev

Akella

Kumar

2015

Renewable and Sustainable Energy Reviews

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“…An alternative to conventional speed governors, is to use DC servomotor [17] for nozzle control in Pelton turbine. Besides, knowing a demand load pattern is possible to reduce a dump load size [18].…”

Section: Introductionmentioning

confidence: 99%

Combined Method of Flow-Reduced Dump Load for Frequency Control of an Autonomous Micro-Hydropower in AC Microgrids

et al. 2021

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Nowadays, microgrids (MGs) play a crucial role in modern power systems due to possibility of integrating renewable energies into grid-connected or islanded power systems. The Load Frequency Control (LFC) is an issue of paramount importance to ensure MGs reliable and safe operation. Specifically, in AC MGs, primary frequency control of each energy source can be guaranteed in order to integrate other energy sources. This paper proposes a micro-hydro frequency control scheme, combining the control of a reduced dump load and the nozzle flow control of Pelton turbines operating in autonomous regime. Some works have reported the integration of dump load and flow control methods, but they did not reduce the dump load value and adjust the nozzle flow linearly to the power value demanded by users, causing the inefficient use of water. Simulation results were obtained in Matlab®/Simulink® using models obtained from previous research and proven by means of experimental studies. The simulation of the proposed scheme shows that the frequency control in this plant is done in correspondence with the Cuban NC62-04 norm of power energy quality. In addition, it is possible to increase energy efficiency by reducing the value of the resistive dump load by up to 7.5% in a case study. The validation result shows a 60% reduction of overshoot and settling time of frequency temporal behavior of the autonomous micro-hydro.

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A novel technique proposed for automatic control of small hydro power plants

Cited by 12 publications

References 7 publications

Francis Turbine Prototype Testing and Generation of Performance Curves

Francis Turbine Prototype Testing and Generation of Performance Curves

Analysis and evaluation of small hydropower plants: A bibliographical survey

Combined Method of Flow-Reduced Dump Load for Frequency Control of an Autonomous Micro-Hydropower in AC Microgrids

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