Conference article

This work focuses on the hydraulic aspects of a Pump as Turbine (PAT) when subjected to different working conditions; including accidental situations. This will provide useful information for the choice of the most adequate solution and will ensure a correct design and safe operation of the installed equipments. This work is supported by experimental data obtained in a series of tests performed at the university’s laboratory and by calibrated computational modelling. The obtained data was used to perform a sensitivity analysis on the relation between discharge variation; runaway time and rotational speed and make inferences about the expected peak overpressure in an accidental situation. Based on the results; the hydropower system may be characterized by a relevant set of calculated parameters that are of extreme utility in the construction and calibration of a computational model capable of accurately predicting different scenarios and alternatives.

Dynamic effects; Reversible hydro; Safety solutions; Hydraulic transients