Hybrid synchronous condenser and power generation unit

A method of operating a hybrid power generation unit and synchronous condenser, the method comprising:

• accelerating a generator to synchronize the generator with an electrical grid;
• varying an excitation voltage for the generator to vary the reactive power output of the generator;
• engaging a motor with a gear box to rotate the gear box;
• accelerating a combustion turbine to a firing speed in response to rotation of the gear box;
• firing the combustion turbine;
• accelerating the combustion turbine to the same speed as the generator;
• engaging a clutch between the combustion turbine and the generator such that the combustion turbine drives the generator;
• and
• outputting electrical power from the generator to the grid.

A hybrid power generation unit and synchronous condenser system connectable to a power grid, the unit comprising:

• a first shaft;
• a combustion turbine coupled to the first shaft and operable to provide rotational energy to the first shaft;
• a second shaft colinear with the first shaft;
• a generator coupled to the second shaft and electrically connectable to the power grid;
• a third shaft spaced apart from the first shaft and the second shaft;
• a motor connected to the third shaft and driven by a variable speed drive;
• a gear box positioned to selectively couple the first shaft and the third shaft for rotation;
• and
• a clutch positioned to selectively connect the first shaft and the second shaft.