4 achievement(s) found
The MOSARE project was developed by CAPSIM in response to the following needs:
- To have a tool available which can increase the technical expertise on new programmes,
- To study the impact of new technologies proposed by industrial companies,
- To produce expert reports on the fleet already in service.
Over the past few years, technological developments in power electronics have allowed locomotives to be powered via a new generation of converters. One consequence of the arrival of this new equipment has been the appearance of harmonic currents which circulate in electric railway lines at harmonic values which had not previously been present.
It is therefore necessary to be able to ascertain whether or not, in certain configurations, it was possible for these currents to create undesirable overvoltage incidents, leading to cuts in the power supply and possibly damaging equipment. [...]
As part of the development of a simulation platform intended for use by helicopter pilot crews, a representative model of the electrical power grid for the pilot and the other systems which can be simulated in real-time was required.
CAPSIM was asked by its customer to develop this real-time model of the helicopter's electrical power grid containing the generators, batteries, DC distribution system and the various power consumption units.
The "real-time" constraint led to the use of a sufficiently rapid discrete solver with fixed time step, the electrical equipment and the power grid being developed in the AMESim environment.
This, therefore, involved studying the physical and behavioural phenomena to be modelled and proposing an adequate power grid model which could be run in real-time. [...]
is a very large-scale international scientific project for demonstrating the scientific and technological feasibility of electricity production using energy from nuclear fusion and leading to its industrial and commercial production.
With this goal, a magnetic plasma confinement system called a tokamak has been constructed using superconducting coils. These coils are supplied on a 66 kV and 22 kV distribution grid via AC/DC thyristor converters (12 pulses). This grid is supplied by three 3-winding transformers, 400kV/66kV/22kV, allowing it to be connected to the RTD grid on a dedicated 400 kV line.
The power consumption of the coils fluctuates greatly during a plasma shot and, in particular, during its initiation and extinction. The impact of these power fluctuations on the grid needed to be estimated in order to validate adherence to the connection constraints of the ITER grid to the supplier distribution grid including limits for active power, reactive power and voltage levels of the various buses.
Hence, the requirement expressed by ITER was to obtain a tool which could simulate the voltage plan of the grid and the power flows throughout the duration of a plasma shot scenario. [...]
CAPSIM - Les Grandes Terres - 13650 MEYRARGUES - France
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