Generator system with gas turbine
AssigneeABB Research Ltd.
InventorsIsabel Alvarez Ortega, Narindra N. Puri, Marco Suter
Life of this patent
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Abstract
In a generator system having a gas turbine (1) and a generator (2), which is driven by the gas turbine (1), an electricity supply network (5) is supplied from an energy reservoir (6) when the output of the gas turbine (1) is inadequate in the case of a load change. In order to overcome the inertia of the gas turbine (1), energy is additionally supplied from the energy reservoir (6) to the generator (2) which, acting as a motor, accelerates the gas turbine (1) until it at least has the output demanded by the network.
Claims12
A method of supply energy with a generator system, the generator system having an energy reservoir and a generator driven by a gas turbine, the method comprising:
- supplying energy to the energy reservoir by the gas turbine when an output of the gas turbine is sufficient for an energy demand of the electricity supply network, and
- when a shortfall exists between the output of the gas turbine and the energy demand of the network, supplying the shortfall from the energy reservoir to the network and supplying energy from the energy reservoir energy to the generator to accelerate the gas turbine by operating the generator as a motor.
A generator system comprising;
- a gas turbine,
- a generator driven by the gas turbine, a rectifier,
- an inverter for connecting the generator to an electricity supply network, and
- an energy reservoir configured to supply energy to the electricity supply network and to accelerate the turbine when an output of the gas turbine is inadequate, the energy reservoir supplying energy to the generator and the generator operating as a motor to accelerate the gas turbine when the output of the gas turbine is inadequate for the electricity supply network.
Dependencies are inferred from the claim text.