Hybrid power generation facility and method of controlling same

The hybrid power generation facility according to claim wherein the steam turbine includes a high-pressure turbine configured to pass steam supplied from the boiler and to return the steam passing through the high-pressure turbine returns to the boiler, an intermediate-pressure turbine connected to the high-pressure turbine and configured to pass steam supplied from the boiler, and a low-pressure turbine connected to the intermediate-pressure turbine and configured to pass the steam passing through the intermediate-pressure turbine, and

• wherein the hybrid power generation facility further comprises a water supply device configured to heat water with steam extracted from the boiler and return the heated water to the boiler.

A method of controlling a hybrid power generation facility including a gas turbine including a compressor configured to compress air introduced from an outside, a combustor configured to mix the compressed air with fuel and to combust the air and fuel mixture, and a turbine configured to produce power with first combustion gas discharged from the combustor, a GT (gas turbine) generator configured to generate electric power using a driving force generated by the gas turbine, a boiler including a combustion chamber and configured to mix the first combustion gas supplied from the turbine of the gas turbine with air and fuel supplied from the outside, a steam turbine through which steam generated in the combustion chamber passes, a ST (steam turbine) generator configured to generate electric power using a driving force generated by the steam turbine, and an energy storage system configured to be discharged based on an increase rate of power demand of a grid and a maximum increase rate of power supply from the GT generator and the ST generator, the method comprising:

• increasing, by the ST generator, the power supply to the grid if the power demand of the grid increases and the maximum increase rate of the power supply from the ST generator exceeds the increase rate of the power demand of the grid.

A method of controlling a hybrid power generation facility including a gas turbine including a compressor configured to compress air introduced from an outside, a combustor configured to mix the compressed air with fuel and to combust the air and fuel mixture, and a turbine configured to produce power with first combustion gas discharged from the combustor, a GT (gas turbine) generator configured to generate electric power using a driving force generated by the gas turbine, a boiler including a combustion chamber and configured to mix the first combustion gas supplied from the turbine of the gas turbine with air and fuel supplied from the outside, a steam turbine through which steam generated in the combustion chamber passes, a ST (steam turbine) generator configured to generate electric power using a driving force generated by the steam turbine, and an energy storage system configured to be charged based on a decrease rate of power demand of a grid and a maximum decrease rate of power supply from the GT generator and the ST generator, the method comprising:

• decreasing, by the ST generator, the power supply to the grid if the power demand of the grid decreases and the maximum decrease rate of the power supply from the ST generator exceeds the decrease rate of the power demand of the grid.