Publication

A New tool for the simulation of dynamic behaviour of hydroelectric power plants

François Avellan, Jean-Jacques Simond, Alain Sapin
2001
Conference Papers

Abstract

An analytical approach allowing modelling transient phenomena in pipes, valves, surge tank and Francis turbines based on impedance method is developed. These models are introduced in a software called “SIMSEN”, which simulates the behaviour of complex applications in electrical machines and power networks. This program is based on a modular structure, which enables the numerical simulation in transient modes of systems exhibiting arbitrary topologies. The numerical simulation for transient phenomena in hydropower plants with “SIMSEN” has the benefit of an algorithm that generates and solves automatically the main set of differential equations. This algorithm solves simultaneously the electrical, hydraulic and regulation equations assuring the interaction between the three parts of the systems. Three cases are investigated demonstrating the capability of these models to reproduce the “wave propagation”, the ”mass oscillations” and the transient behaviour of Francis turbine.

Official source

https://infoscience.epfl.ch/entities/publication/9291713e-66a4-4dd5-8606-b6c96b2c1fda

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François Avellan, Jean-Jacques Simond, Alain Sapin
2001
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/9291713e-66a4-4dd5-8606-b6c96b2c1fda

About this result

Related concepts (32)

Simulation

A simulation is the imitation of the operation of a real-world process or system over time. Simulations require the use of models; the model represents the key characteristics or behaviors of the selected system or process, whereas the simulation represents the evolution of the model over time. Often, computers are used to execute the simulation. Simulation is used in many contexts, such as simulation of technology for performance tuning or optimizing, safety engineering, testing, training, education, and video games.

Computer simulation

Computer simulation is the process of mathematical modelling, performed on a computer, which is designed to predict the behaviour of, or the outcome of, a real-world or physical system. The reliability of some mathematical models can be determined by comparing their results to the real-world outcomes they aim to predict. Computer simulations have become a useful tool for the mathematical modeling of many natural systems in physics (computational physics), astrophysics, climatology, chemistry, biology and manufacturing, as well as human systems in economics, psychology, social science, health care and engineering.

Water turbine

A water turbine is a rotary machine that converts kinetic energy and potential energy of water into mechanical work. Water turbines were developed in the 19th century and were widely used for industrial power prior to electrical grids. Now, they are mostly used for electric power generation. Water turbines are mostly found in dams to generate electric power from water potential energy. Water wheels have been used for hundreds of years for industrial power. Their main shortcoming is size, which limits the flow rate and head that can be harnessed.

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