3 achievement(s) found

Incident analysis and dynamic study on an industrial grid

The industrial site studied was constructed in the 1950s and has been subject to many changes. The electricity distribution grid on the site contains several autonomous sources (turbine generators), distributed at various points on the HVA and HVB grids. The function of these generators is to supply the priority units in the event of a power grid problem (internal or external to the site).
The site was recently subject to two major incidents in less than six months on the main HVA distribution grid, incidents which resulted in the loss of supply to the priority units and the start-up of the autonomous sources supplying power to these units. Following these incidents, the operator undertook a campaign to modernize the excitation regulation for the turbine generators.
This involved allowing the customer to understand the dynamic behaviour of its autonomous sources in the event of a transient event on the grid. The initial objective was to analyze and validate the causes of the incident. The second objective was to analyze the influence of modifications made to the excitation regulation and to detect the operating limits to impose on the autonomous sources after modification. [...]

Expertise of a Diesel-Generator supplied network

Following the commissioning of the all electric ship’s power station, a phenomenon active power “pumping” (of several MW) between 2 diesel generators has been observed. This phenomenon is characterised by active power transfer in both ways from one diesel generator to another; and is likely to cause a malfunction of the control system as well as an accelerated deterioration of the diesel generators themselves. The network operator wishes to identify the causes of this issue and to solve this problem. [...]

Expertise regarding diesel generator fed complex systems

Soon after the commissioning of a 3MVA diesel generator on a site, degradations and tears were noticed in the mechanical coupling between the diesel engine and the alternator. The expert checking on the mechanical coupling did not show any fault on the deteriorations.
The network manager therefore requested CAPSIM to do a diagnostic based on numerical simulations. [...]