نتایج جستجو برای: hydropower plant

تعداد نتایج: 398271  

2009
Maria Regina Gomes Zoby Jurandir Itizo Yanagihara

The aim of this work is to study the primary control system of a hydropower plant in isolated mode. The power plant is modeled by differential equations and results are compared to field data from an actual hydropower plant, presenting deviations lower than 1.0%. The study of primary control system is conducted in order to define useful sets of parameters for controllers. Four controllers are s...

2015
M. Mohsin Munir A. S. Shakir Noor M. Khan

Pakistan is facing serious shortfall of electricity for few decades. Small hydropower projects can alleviate the worsening situation. The sizing of a low head hydropower plant plays a vital role in establishing the feasibility of the project. The plant needs to be optimized for energy produced, efficiencies of the plant components, number of units and its financial/economic parameters. This pap...

Hamed Javaheri Fard Hamid Reza Najafi Hossein Eliasi

Hydropower plant and especially micro-hydropower plant is an available, reliable and economical energy source. Micro-hydropower plant is one of the most environment-friendly technology, use and development of which leads to reduction of energy consumption sporadically and worldwide. Along with the growth of these power plants, the issues related to the control of electrical parameters such ...

Hamed Javaheri Fard Hamid Reza Najafi Hossein Eliasi

Hydropower plant and especially micro-hydropower plant is an available, reliable and economical energy source. Micro-hydropower plant is one of the most environment-friendly technology, use and development of which leads to reduction of energy consumption sporadically and worldwide. Along with the growth of these power plants, the issues related to the control of electrical parameters such ...

Journal: :energy equipment and systems 0
hamed javaheri fard faculty of electrical and computer engineering, university of birjand, birjand, iran hamid reza najafi faculty of electrical and computer engineering, university of birjand, birjand, iran hossein eliasi faculty of electrical and computer engineering, university of birjand, birjand, iran

hydropower plant and especially micro-hydropower plant is an available, reliable and economical energy source. micro-hydropower plant is one of the most environment-friendly technology, use and development of which leads to reduction of energy consumption sporadically and worldwide. along with the growth of these power plants, the issues related to the control of electrical parameters such as l...

2008
Chengming WU

A modularization method has been proposed here for the full scope real-time simulation of a large-scale hydropower plant. In this method, the full scope dynamic simulation model can be decomposed into several subsystems that can be calculated independently in every time step, and each kind of subsystem model is developed to be a standard module. Using object-oriented modeling method for the sim...

2014
José Ignacio Sarasúa Paz Elías Guillermo Martínez-Lucas Juan Ignacio Pérez-Díaz José Román Wilhelmi José Ángel Sánchez

Run-of-river hydropower plants usually lack significant storage capacity; therefore, the more adequate control strategy would consist of keeping a constant water level at the intake pond in order to harness the maximum amount of energy from the river flow or to reduce the surface flooded in the head pond. In this paper, a standard PI control system of a run-of-river diversion hydropower plant w...

Journal: :European Journal of Operational Research 2008
Thor Bøckman Stein-Erik Fleten Erik Juliussen Håvard J. Langhammer Ingemar Revdal

This paper presents a method for assessing small hydropower projects that are subject to uncertain electricity prices. We present a real options-based method with continuous scaling, and we find that there is a unique price limit for initiating the project. If the current electricity price is below this limit it is never optimal to invest, but above this limit investment is made according to th...

2009
N. Milivojević D. Divac D. Vukosavić D. Vučković V. Milivojević

Due to complex relations present in hydropower markets, and having in mind the specific role of hydropower in common electricity generation and transmission grid systems, it is impossible to identify a unified approach to hydropower plant management. The ever-changing market behavior also presents a problem for unification of methodologies and all this imposes the interpretation of hydropower p...

2000
Bernhard Wehrli Klaus Jorde Christine Bratrich Armin Peter

The concept of green hydropower needs an evaluation procedure for the ecological upgrading of hydropower plants based on scientific criteria [1]. For the planning and evaluation of riverrestoration programs, concepts like “ecosystem integrity” or “river health” have been proposed and empirically tested. Computer programs have been developed, which allow the testing of alternative restoration co...

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