Improvements to Hydraulic Machines During Grid Disconnections
AssigneeGE Renewable Technologies
InventorsQuentin Alloin, Theophane Foggia, Renaud Guillaume
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Abstract
Installation for converting hydraulic energy into electrical energy, provided with a fixed speed hydraulic machine comprising a pump-turbine (2) linked to a generator (20) by a shaft. The installation further comprises: an electrical torque actuator (34) to establish a circuit with the generator (20), electrical torque actuator connection means (35) for connecting the generator (20) the electrical torque actuator, and command means (29) for detecting a disconnection of the generator (20) from the grid, and for commanding the electrical torque actuator connection means (35) to connect the generator (20) to the electrical torque actuator (34).
Claims2
A method for limiting the rotational speed of a fixed speed hydraulic machine comprising a generator following a disconnection of the hydraulic machine from an electricity grid, the method comprising the steps of:
- a) detecting a disconnection of the generator (20) from the grid (30);
- and
- b) connecting the generator (20) to an electrical torque actuator (34) by switching electrical torque actuator connection means (35) to a conducting state.
2-12. (canceled)
Dependencies are inferred from the claim text.